OpenCircuits - User contributions [en]

Oscilloscope

2009-12-17T15:44:32Z

Cov: /* Non-Free Software */

An '''oscilloscope''' (often abbreviated '''o'scope''' or '''scope''') displays signal voltages as a 2-D graph, usually as voltage (vertical axis) as a function of time (horizontal axis).

The ''probe'' of a o'scope is held against, or is clipped to, the metal wire carrying the signal of interest.

A '''dual-trace''' o'scope has 2 probes, so 2 different signals can be seen -- so not only the shape of the signal can be seen, but also the exact time from events on one signal to events on the other signal.

= Techniques =

Sometimes one wants to look at a 8-bit data bus -- typically one uses a "logic analyzer" to look at lots of time-aligned digital signals.
For a given number of signals to look at, oscilloscopes (which show the true analog waveform) are much more expensive than logic analyzers (which only show if a digital waveform is hi or low, above or below the logic threshold).
Many people buy both a (dual-trace) o'scope and a 16-trace logic analyzer, which together have a total cost less than one true 8-trace o'scope.

''... more techniques ...''

= Open Source Oscilloscopes =

Of course, you have to already have a working o'scope in order to build and test another o'scope, making this the same sort of chicken-and-egg problem as the [[Projects#RepRap | RepRap]] project, the [http://en.wikipedia.org/wiki/GNU_Compiler_Collection GCC project], and other projects David Cary finds interesting.

=PC Oscilloscopes=

==Open Hardware for PC Oscilloscopes==
===Bitscope===
* $550 BS100U: 2 analog inputs + 8 digital inputs, optically isolated, from BitScope Designs (MetaChip Pty. Ltd.) [http://bitscope.com/]; [http://www.endolith.com/wordpress/2008/06/17/bitscope/ review by Endolith]

===MultiAnalyser===
Some people on the PIClist have been discussing designing an open-source oscilloscope.

* I think initial discussions occured on the [http://www.piclist.com/techref/postbot.asp?by=thread&id=%5BEE%5D+scope+project+anyone%3F&tgt=browse "[EE] scope project anyone?"] thread [http://www.piclist.com/techref/postbot.asp?by=time&id=piclist\2004\09\17\111014a.txt] at PIClist.
* Later discussion moved to the [http://tech.groups.yahoo.com/group/MultiAnalyser/ "MultiAnalyser" group at Yahoo]

==Closed, COTS Hardware for PC Oscilloscopes==
* For low frequencies, pretty much any external sound card with a line input will work. External card line inputs generally have a range around 0-1 V whereas onboard microphone inputs only have up to about 50 mV, which just isn't enough sensitivity. The [http://vtluug.org/wiki/Lab-in-a-Box Virginia Tech Lab-in-a-Box] recommends the Behringer UCA202. To use a sound card oscilloscope on a regular basis, a circuit with variable attenuation is recommended (i.e. 1x and 10x). Compensation for the hardware and software gain can be done as part of the attenuator circuit or in software.

==PC Oscilloscope Software==

===Free Software===

* [http://sourceforge.net/projects/xoscope/ Sourceforge: xoscope] is a digital oscilloscope for Linux that uses input from a sound card or EsounD and/or a ProbeScope/osziFOX and will soon support Bitscope hardware. The sound card device is hard-coded but instructions for modifying it are on the [http://vtluug.org/wiki/Lab-in-a-Box#Software VTLUUG wiki].

* [http://www.baudline.com/source_code.html Baudline GPL version] is a signal analyzer designed for scientific visualization, using input from recorded data files or from a sound card. For Linux / Solaris. The source code is expensive and it is intended for qualified corporate or institutional buyers.

* [http://tomeko.net/miniscope_v3/ Miniscope v3] is a digital oscilloscope for Windows. It connects to device using external dll. Available libraries to connect with sound card, Microchip MCHPUSB Generic HID Demo and custom AT91SAM7S64 hardware.

===Non-Free Software===
* [http://www.baudline.com/what_is_baudline.html Baudline gratis download] (dual licensed, see Free Software entry).
* [http://www.zelscope.com/ Zelscope] Converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter. Windows trialware.
* [http://www.bitscope.com/software/dso/ BitScope DSO] is a digital oscilloscope logic analyzer for Linux and Windows. It works with BitScope hardware and is distributed as freeware.
* [http://www.zeitnitz.de/Christian/scope_en Zeitnitz Souncard Scope] and function generator. For Windows but runs under Wine.

=Non-PC Oscilloscope Projects=
* [http://www.circuitcellar.com/archives/viewable/Zhang205/index.html "Handheld Multifunction Scope"] by Jingxi Zhang & Yang Zhang, 2007. "dual-channel oscilloscope supports 250 ksps for each channel". ... also: ohmmeter, capacitance meter, and inductance meter ... pulse generator ... small speaker and OLED output. All functions work stand-alone with OLED display, but it can also be to a host PC with the USB port to display waveforms on the PC display.
* [http://www.dansworkshop.com/electricity-and-electronics/homebuilt-oscilloscope.htm Dan's Workshop: Notes on converting that old compact tv set or computer monitor into an oscilloscope.]
* [http://www.intio.or.jp/jf10zl/tvosc.htm "TV Oscilloscope Adaptor"] "This ... adapter ... changes a TV to a Oscilloscope."
* Some people are discussing the possibility of somehow converting the (open-source) [[uWatch]] into a o'scope: [http://www.calcwatch.com/forum/viewtopic.php?id=139 WBL: watch based laboratory]

=Uncategorized=
* K3PTO http://www.qsl.net/k3pto/ 8 bit
* [http://massmind.org/techref/scenix/sxoscope/index.htm Massmind: "SX based O’Scope"] by Alberto Geraci of BTX Sistemas
* [http://www.semifluid.com/?p=9 "PIC12F675 Oscilloscope"]
* [http://zedomax.com/blog/2006/12/28/diy-hack-make-your-own-oscilloscope/ "DIY HACK - Make your own Oscilloscope"]
* [http://www.geocities.com/SiliconValley/Lakes/7156/articl3.htm "Solid State Oscilloscope"] by George Katz 1987 -- an extremely simple and small circuit that drives a 10 x 10 LED array. (Would it make sense to adapt the [[PointLess LED Array]] to be more like this?)

Epanorama has many links related to o'scopes and o'scope accessories [http://www.epanorama.net/links/measuring.html#oscilloscope].

=Oscilloscope Design Discussions=
*[http://www.edaboard.com/ftopic41841-30.html Digital oscilloscope Project] edaboard.com

== some low-cost oscilloscopes ==

some low-cost oscilloscopes, in no particular order.
''... it would be nice to mention # of analog input channels, # of digital input channels, whether it can be used under Linux, does it have output channels ... price should (?) include 2 analog probes, ... is it open hardware? ... anything else?''

* price name comments
* $150 (?) VELLEMAN HPS10 Hand Held Oscilloscope 10MHz sampling rate, LCD: 128x64 pixels [http://www.kitsusa.net/phpstore/html/VELLEMAN-HPS10-Hand-Held-Oscilloscope-989.html]
* $349.95 VT DSO-2815H,1x150MHz or 2x75MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $299.95 VT DSO-2810H,1x100MHz or 2x50MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $250 VT DSO-2810F,2x100MHz, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
*$150 Poscope basic 2 from PoLabs [http://poscope.com/ PoLabs], 2 analog channels, 16/8 digital channels, PC USB oscilloscope, spectrum analyzer, chart recorder, pattern generator, logic analyzer, PWM/ square generator
* $420 PicoScope 2202 from [http://picotech.com/ Pico Technology]([http://www.picotech.com/picoscope-2202.html ])([http://www.interwld.com/pico/pico-3000.htm ])([http://www.pc-oscilloscopes.com/3000.htm])
* $200 Hantek DSO-2090 USB PC Oscilloscope [http://www.beigly.com/catalog/hantek-dso2090-oscilloscope-p-96.html]
* $380.00 DSO2250 100MHz PC-SCOPE 250MS/s [http://world-educational-services.net/cart/index.php?main_page=product_info&cPath=56&products_id=134&zenid=68c155f8ccc626c8d316e8417b32dc5d]
* CAN 219.99 Syscomp Electronic Design DSO-101 [http://syscompdesign.com/] (Syscomp supports the "[https://sourceforge.net/projects/oip The Open Instrumentation Project]" [http://syscompdesign.com/oip.htm])
* EUR 427 ETC s.r.o. M520 Oscilloscope [http://etcsk.com/]
* $222 ANT8 : 8 Channel Logic Analyzer (EasySync)[http://easysync-ltd.com/]
* $200 PS40M10 : Swordfish Hand-Held Instrument (1 channel) USB (EasySync)
* $220 DS1M12 : Stingray Multi-Function Instrument (2 channel) USB (EasySync)
* under $600 : [[Jameco]] has some actual stand-alone oscilloscopes for under $600. So does www.tequipment.com - see Rigol 'scopes from China - good quality - also on eBay.
* under $200 : Carl's Electronics has some stand-alone and PC-hosted (parallel port?) oscilloscopes for under $200.[http://www.electronickits.com/gold/gold.htm]
* $170 HobbyLab USB oscilloscope [http://hobbylab.us/USBOscilloscope/Home.htm]
* $500 DS1022C : 2 Channel, 25 MHz Rigol Technologies Inc.[http://rigolna.com/]
* $999 CS320A Cleverscope [http://cleverscope.com/] (has a discussion forum[http://cleverscope.com/forum/])
* $167 DrDAQ "data logger" (parallel port) from Pico Technology [http://www.drdaq.com/]
* $970 NI USB-5132 : USB digitizer from National Instruments [http://sine.ni.com/nips/cds/view/p/lang/en/nid/203719]
* $139 Parallax USB Oscilloscope 2 analog inputs + trigger; 1 MS/s [http://parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/txtSearch/28014/List/1/ProductID/46/Default.aspx?SortField=ProductName%2cProductName]
* $170 PC USB Oscilloscope DiSco (HobbyLab, LLC). 2 analog inputs ( 200 KHz ) + 16 digital inputs (or 8 digital inputs + 8 digital outputs). [http://hobbylab.us/]
* $150 ST16B 10 MHz stand-alone oscilloscope, 2 analog inputs [http://www.electronickits.com/gold/gold.htm]
* $190 VEPCS100 ( PCS100 ) - PC Based Oscilloscope; 1 analog input ( 12 MHz ); optically isolated from PC [http://www.electronickits.com/gold/gold.htm]
* $950 DSO-8502 USB Oscilloscope, 2 analog inputs (250MSa/s) + external trigger; 1 digital output (trigger out); buffer: 512K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $799 DSO-8202 USB Oscilloscope, 2 analog inputs (200MSa/s) + external trigger; 1 digital output (trigger out); buffer: 128K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $108 LabJack U3 USB data acquisition and control device, 16 analog inputs ( 12 bit, 2.5 KSa/s at 12 bit resolution, 50 KSa/s at 8 bit resolution), buffer: 984 samples, 2 analog outputs, digital outputs [http://www.labjack.com/labjack_u3.php]
* $249 S2X100 USB Oscillloscope, 2 analog inputs (100Ms/s) with 8 bit resolution, buffer: 64K samples [http://www.dynoninstruments.com/products_s2x100.php?gclid=CNzyz_625pgCFQIyxwodgwSvMA]
* $495 ELAB-080 [http://www.dynoninstruments.com/products_elab080.php]
* $745 USBee AX-Plus, 2 analog inputs (Max 16 MS/s ?) and 8 digital inputs [http://www.usbee.com/ax.html]
* $90 DSO nano, 1 analog input (1 Ms/s) with 12 bit resolution; buffer: 4096 Point; waveform storage on SD card [http://www.seeedstudio.com/depot/micro-digital-storage-oscilloscopedso-nano-p-512.html]; [http://www.justblair.co.uk/seeed-studio-dso-nano-pocket-digital-storage-oscilloscope-review.html review by Justblair]

''FIXME: [http://measurementcomputing.com/cbicatalog/directory.asp?dept_id=403 Measurement Computing] has some wireless and USB analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.dataq.com/ DATAQ Instruments, Inc.] has some USB and Ethernet analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.designnotes.com/ DesignNotes.com, Inc.] has some USB and handheld LCD o'scopes from [http://www.velleman.be/ Velleman]: [http://www.vellemanusa.com/us/enu/product/list/?id=347914 Velleman oscilloscopes] -- add to the above list.''

''FIXME: [http://www.linkinstruments.com/oscilloscope.htm Link Instruments Inc.] has several USB o'scopes and "USB MSO" ("mixed signal o'scope"). Are they already listed above?''

EasySync[http://easysync-ltd.com/] is a distributor of RockyLogic's ANT8/etc products.

Test Equipment Solutions Today, Inc.[http://testsolu.com/] is a distributor of Rigol's DVM and oscilloscope products.

When you [http://search.ebay.com/search/search.dll?satitle=oscilloscope search eBay for oscilloscope], you might find some good deals.

= Further Reading =

* other [[hardware tool | good equipment to buy when getting started]]

= External Links =

* [http://www.embedded.com/columns/breakpoint/160902529?printable=true "Scoping out palm-sized USB oscilloscopes"] by Jack Ganssle 2005, Embedded Systems Design. A review of 3 USB oscilloscopes -- reader comments at the end mention a few more USB o'scopes. ''(FIXME: make sure all the scopes mentioned are included on the above list)''
* Keith has made a list of [http://www.techtravels.org/amiga/amigablog/?p=167 "PC USB logic analyzers that cost under $1000."][http://www.techtravels.org/tech/logicanalyzer.html], some of which can be used as an o'scope. ''Should I use the same $1000 price cut-off for the above list? Or perhaps double or halve it?''
* Brooke Clarke has posted a list of [http://prc68.com/I/PCO.html "PC based Oscilloscopes"]
* [http://en.wikipedia.org/wiki/Oscilloscope Wikipedia: oscilloscope]
* Other discussions of [http://forums.reprap.org/read.php?13,5086 "Cheap digital storage oscilloscope"]
* [http://www.ganssle.com/microscopes.htm The Ganssle Group reviews Inexpensive USB Scopes and Logic Analyzers]
* [http://massmind.org/techref/tools.htm Massmind: Tools] lists a few sources for a variety of tools used in electronics: o'scopes, logic analyzers, meters, waveform generators, etc.
* [http://ask.slashdot.org/askslashdot/04/02/28/0041233.shtml Slashdot: "Cheap PC Oscilloscopes - Any Recommendations?"]
* [http://slashdot.org/askslashdot/01/12/07/191220.shtml Slashdot: "Building a Cheap Oscilloscope Using Your PC?"]
* [http://www.epanorama.net/links/measuring.html#pcmeasuring ePanorama.net: "Using PC as a measurement instrument"] ''(FIXME: anything we should add to the above list?)''

----
[[Category:Techniques]][[Category:Test Equipment]]

User talk:DavidCary

2009-12-14T21:10:02Z

Cov: /* Baudline Free Software */

== from russ_hensel Jan 21 09 ==

I have been thinking about how to get more traffic at open circuits. So far:

*Post links to it on forums, these are usually on topic for the forum, not just ads.
*Started a sub wiki for SourceBoost C ( much of which is just a collection of stuff I was doing here anyway ) If this seems to commercial, let me know and we can see if there is a better way to do it. I think it fits the site well however.
*When I link to sites now I often send an email letting them know and inviting them to contribute, not too much has come of this yet, but more time will tell.

*Should we consider adding the site to some web rings? If we think this is a good idea what process should we use to discuss and keep the process under control.

Russ

== from joshua w. ==
The pceeg project has become a alpha release now. I now have eagle cad files schematics and boards for all three boards.
I have the pcb from sparkfun in my hand.
I will be ordering parts for the microcontroler printed circuit board this weekend to test it out.
Take a look at it it has changed a lot.
I look forward to your comments I would like help on this project.

== from russ hensel ==

I am making a page just for the spam topic [[How Should We Deal With Spam]] and will move all the discussion here to their if you do not object. Then will link in a few other places as well. Ok.

''That sounds great. I've just finished moving all the spam-related discussion on this "User talk:DavidCary" page to the [[spam]] page, but I'm sure there are other similar discussions scattered all over the place. I hope we will be able to reap the advantages of [http://www.communitywiki.org/ConsolidateInformation consolidate information]. --[[User:DavidCary|DavidCary]] 12:33, 9 April 2008 (PDT)''

== question about russ_hensel_test ==

from my talk page:

russ_hensel_test as with a few other pages that should be linked to only from my personal page were indeed tests, some should have already
been deleted. At the time I had no idea how to move them. I will try to leave less trash behind.

Russ

No worries.
It's easy enough to fix.

I just wanted to check in and see what the scoop was before plunging in and deleting a page that *looks* redundant, but perhaps is merely in the middle of some complex transformation.
--[[User:DavidCary|DavidCary]] 21:29, 14 February 2008 (PST)

== Take a look at..... ==
[[russ_hensel_test]]

take a look at a page I am working on for PIC projects ( all external )
It clearly has a ways to go, but then I am planning to link it in somewhere public.

The page is supposed to have a fairly clean look for browsing, and some structure for searching.

I am still struggling with getting the formatting down right.
Is there a test for what is open that we should be applying?

Let me know your thoughts.

russ_hensel

: Looking good. Thank you. The "Editing help" link (just below the "Summary" bar that shows up after you start editing a page) *ought* to have tips on formatting. Maybe next month :-).
: I made a few minor tweaks that I *thought* made it look better -- hit that "undo" button if I've only messed things up.
: For [[open hardware]], I'm using the consensus definition at [http://en.wikipedia.org/wiki/open_source_hardware Wikipedia:open source hardware]. If they've posted the schematics and firmware online, and indicated that anyone can use the design information -- perhaps released under GPL, Creative Commons, or public domain -- then it's open hardware.

== Armus board ==
Hi!
Very glad at least one guy did show some enthousiasm about the project!
Currently, as the project was left (and will probably stay....):
Hardware is all good. The board with gerbers can be sent to most major Fab House and you will receive a functionnal design. Proto1 was tested and around 5 glitches have been found and corrected for Proto2, wich was never tested but should be 100% functionnal.

The Firmware of the 4 DSPics is symetrical, and is "complete". It interface to Servos and DCs. The input encoder, if I recall, is not done, but the code is there and all C, so it should be easy to just copy-paste a snippet from somewhere else into the project.
The Firmware for the multi-IO PIC18 is complete, and you will be able to play with all IO.
The Drivers to communicate to the PIC and DSPIC from the kernel is done and documented.
Ah, yeah, we have drivers for Ethernet/CAN/Sound.
We also have a complete compiled kernel ready to load onto the board with various "demonstration" mode.

Most of the work left is polishing here and there, as the firmware/driver part was done is haste. Most of the things work 100%, and will need no touch, but some functions (like the Quadrature encoders) are plain missing.

The part where more work is to be done is on the Integrated Devellopment Environment (IDE). Shure, you can use KDevellopp, Eclipse, or any cross compiler out there. You could even download some dev.boards' software and load it onto ARMUS and compile natively from there. We had in mind (read the article) to creat a simple and easy IDE for 1st year undergrads, so maybe it's not necessary for you :P

If you want the =WHOLE= project CVS for you to enjoy, I have it and could send it to you trough FTP or any other way you prefer. I guess I could also just mail a DVD. It weights around 700MB, and there is ton of french comment and files (as the team, in Quebec, was native french) but I could translate any part you feel is critical for specific applications.

If you want to work on this "on your own", most of the board is based on atmel's AT91RM9200EK and AT91RM9200DK . Their demonstration Kernels should run as-is with the same procedure as Atmel's.

Just to say: what do you plan to use the board for?
Thanks for your interest!
-Jerome Marchand

'''Wow.'''
This is too cool to stick on a shelf a let it gather dust.
I want to see projects like this "ratchet forward".
I want to allow people to build off last year's work rather than starting all over again from scratch -- so in a few years we can finish amazingly cool projects that are far too complicated for one team to finish in a year.

I think this [[ARMUS Embedded Linux Board]] might be perfect for a CNC machine.
The LinuxCNC software runs on Linux, so it ought to run on this Linux board.
And the DSPics should be able to drive the power transistors that run the motors on the CNC machine, and track the position of the routing head.

And not just a single CNC machine -- a series of open-source CNC machine designs. Designs that anyone can build, improve, and then share those improvements with the next builder.

Yes, please do send me the project files.
These are all "public domain" or "[http://creativecommons.org/ creative commons]" or "open source", with no warranty, right?

Do you think that perhaps http://SourceForge.net/ or [http://en.wikipedia.org/wiki/GNU_Savannah GNU Savannah] might be a more appropriate place to host this software than Opencircuits?

Alas, I am embarrassed to admit that I barely speak 5 words of the lingua franca, the French language.

--[[User:DavidCary|DavidCary]] 19:16, 3 November 2007 (PDT)

== Programmable Chip EEG ==
Why don't you help finish my programmable chip eeg project and then use what you learned and the results to then create your own project. Programmers like to reuse working modulas instead of reinventing the wheel.

The pceeg has gone through a major revision streamlining its design and I am working on the father board a digital computing board for the project. I will be cleaning up the page.

''Thank you. I hope the [[Programmable Chip EEG]] project becomes wildly successful. --[[User:DavidCary|DavidCary]] 10:01, 19 July 2007 (PDT)''

I am getting to be in the alpha release check it all out at the sourceforge page and the open circuits wiki.

==a talk through Wiki Howto==
Hi DavidCary
 Thank you very much you create this wiki to let us to share electronic projects.
 I want to merge the "[[RS232 Dev Board]]" and "[[RS232 RS485 USB Converter Board]]", so want to discuss to the author, Tkb, of "RS232 Dev Board". However, i cannot find out the talk page like i talk to you by this way. Can you point me how to do it?
 thanks
 [[User:Yan|yan]]

''If you have a question or comment specifically about the "RS232 Dev Board", please leave a comment on the [[RS232 Dev Board]] page or its "discussion" page.''
''You can click on "[[User talk:Tkb]]" to leave a note on Tkb's user talk page.''
''Since there are more people watching the "RS232 Dev Board" page than Tkb's page, you'll probably get a quicker response if you post to the "RS232 Dev Board" page than to Tkb's page.''
''--[[User:DavidCary|DavidCary]] 20:00, 29 December 2006 (PST)''

[[User:Chazegh|Chazegh]] created this "Open Circuits wiki".
I am flattered that you think I had something to do with it.
But since Chazegh seems to be too busy to spend much time here,
it's up to you and I (and whoever else we can recruit) to create content here.
--[[User:DavidCary|DavidCary]] 21:08, 29 December 2006 (PST)

5.7.2007 Joe Silva:
Hi David, great site!
...

----

Aloha David,
Roger here, I'm still puzzeled as to how to create a new article. I uploaded an image file for the 723 regulator (my article subject). This went into an "Image File page" automatically, OK. I added it to the Voltage Regulators section of Components/Integrated Circuits, OK. But I couldn't figure out how to make a document like there is for LT1528 OO. I put the info I have into the discussion page for the image, but that is only a temporary solution.

How does one create a new article page that isn't a "talk" page for something else? Beside the info on the IC, I have a couple of documents that are in-depth on using the device. These should be near each other as well as near the info document above. How would I go about setting up a "723" sub-chapter of "Integrated Circuits"? I guess that's as clear as I can make the question.

I would also like to suggest a modification to the linkage. I'm reading the synopsis on the LT1528, I want to find oout more, so I click on the image, but instead of taking me to an in-depth article, it takes me to the image file page. There I have to look at the Links to find the article (which is only identified as LT1528). I'd like to be taken to the article instead of the image. Take me to the image only if there is no article. Of course this may be more difficult to make happen--I don't know how the site is structured. My web programming is very basic. Still, I think this makes sense from a user's POV.

Thanks in Advance,
[[User:RogerAF|RAF]] 17:26, 22 May 2007 (PDT)

Aloha, Roger.
You're doing great.

I agree that it would be nice if clicking on the picture of the LT1528 took you directly to the article about the LT1528.
I don't know how to fix it.

Do you see the "Help" link in the navigation bar on the left side of every page?
I think the page it brings up needs a few more tips.
But I want to keep it short and simple.
If I explained every detail, it would become a bloated 100-page document that nobody would read.

There are already far too many bloated 100-page documents about electronics.

I hope that you, dear reader, and other volunteers will make Open Circuits into a place where people can learn to do amazing things.
A place that avoids forcing people to learn 100 irrelevant details before learning the one thing they need to know before they get back to building their robot (or whatever).
A place that never makes people throw away good ideas, because we never confuse people into believing that it would be far more complicated and expensive to build than it really is.

p.s.:
Picking the name of a page is a bit of an art.
Since we want to refer to a page a lot, that's easier when the name is very short.
People new to wiki always pick names that are too long, or have too many capital letters.
Fortunately, it's very simple to rename pages.
You rename pages by clicking on the incorrectly-named "Move this page" button.
(I don't know how to fix that, either).
--[[User:DavidCary|DavidCary]] 10:15, 23 May 2007 (PDT)

=== making links ===

Speaking of linkage, making links is one of the most important parts of this wiki.

Whenever you find one article mentioning some other article, you can click on that word to get more detail.

If that word is not already clickable (underlined and colored), please make it clickable.
To make a word clickable, hit the "edit" button at the top of the page.
Then add double brackets <nowiki>"[["</nowiki> and <nowiki>"]]"</nowiki> around that word.
(Some people recommend only making the first mention of that word clickable).

The cheatsheet ( http://en.wikipedia.org/wiki/Wikipedia:Cheatsheet ) calls this an "internal link".

Here's the trick: you can add those brackets to any word, making it into a link.
Some of those links will go to pages that don't exist yet.

What happens when you click on one of those links to a page that doesn't exist yet?

I'm not going to tell you what happens.
Go find out for yourself.
You can practice in the [[meta:Sandbox]].

--[[User:DavidCary|DavidCary]] 10:15, 23 May 2007 (PDT)

----
Aloha David,
Roger again; I want to thank you for the info and hints. I'm catching on. I got my component description linked to the caption under the image on the Components/Voltage Regulators page. And I created a "New Article" which I then "moved" to the title of my article. And my article has a link to the description and that has a link to the article, so I'm getting the hang of it. I have several schematics and PC artwork images to upload and link to my article, plus a second article I want to publish (I didn't write it, but I've been unable to find it on the internet--I have a xeroxed copy from 1986 or so and that is the only existing one as far as I know). That article also has several images that go along with it. I wondered about the feasability of uploading a .pdf file (I made one of it) to this site. Would that work? Should I even try? I don't want to screw anything up, but wouldn't that be a lovely thing if we could upload .pdf files? Just a thought.

Again, Thanks very much, I've made some progress.

[[User:RogerAF|RAF]] 19:48, 23 May 2007 (PDT)

Aloha, Roger.
You are welcome.
Have you tried creating a link to an article that doesn't exist yet, just to see what happens when you click on that link? For example, the [[switching regulator]] page that I'm going to start in a few days.

I don't know about this article that you didn't write.
If the original author wants people to post it widely, and doesn't mind us editing it, then great, let's post it (and give correct attribution).
But some writers go a little crazy when they see that someone random stranger has copied their stuff and posted it to the internet.
(That's why there's that "DO NOT SUBMIT COPYRIGHTED WORK WITHOUT PERMISSION!" note at the bottom of each Edit page).

I wouldn't mind you posting a .pdf file (that you wrote) temporarily.
It's better than nothing.
But I would expect someone to eventually convert it to text-and-images.
That makes it much easier for the next person to improve the it.

Thank you again for adding useful information to Open Circuits.
I hope you won't mind people "improving" the things you post here.

--[[User:DavidCary|DavidCary]] 21:26, 23 May 2007 (PDT)

Aloha David,
Sorry for the delay, I had a loonng job and then our cable modem failed. At least they swapped us a new one free (hooray RoadRunner). But I want to explain the article: "The Many-Talented 723" by Glenn Prescott. I came across this as a xerox copy sometime around 1985. It was evidently published in a magazine for radio enthusiasts--there are some ads on the last page for radio gear. But the name of the magazine isn't on any of the pages. I Googled for the article and got no returns. I think it is a very good article as far as describing the IC and how to use it. It helped me when I was a beginner, so I want to share it. However, I don't want anyone to get into trouble over it. I just did another search on Google and all the returns refer to my mention of it here on Open Circuits. Like I said, this is a copy that I have, no clue as to the magazine that published it, no copyright date, no nothin'. But I will leave it to your judgement if it is a risk. I still have my own article to get uploaded along with images. I will concentrate on getting mine done before doing anything with the copied article.

[[User:RogerAF|RAF]] 20:27, 26 May 2007 (PDT)

Unless the author has given permission to publish it, I think a better idea would be to write your own article, citing the one you're talking about further details. Ideas are not copyright, but the expression of them (i.e. the text of the article) is, or so I understand. [[User:Autarch|Autarch]] 10:22, 13 June 2007 (PDT)

== spammers ==

moved to [[spam]]

== OpenCircuits Guideline ==

Here is a rewritten guidline as per your request. It may need some polishing:

''... moved to [[We love volunteers]] ...''

[[User_talk:Freqmax]]

Start the page [[Guideline]] ..?

''I think that's great. We might want a "guideline" page someday, but for now I'm going to stick it over into "[[We love volunteers]]".'' --[[User:DavidCary|DavidCary]] 00:44, 3 August 2007 (PDT)

== Delete object ==

[http://www.opencircuits.com/index.php?title=Image:Geda_pcb_print_layout.png&action=delete&oldimage=20070731124511%21Geda_pcb_print_layout.png&wpEditToken=f5d80d0b9e925f6a32d06cabf08f986b%5C Can you delete this?] [[User:Freqmax|Freqmax]] 05:50, 31 July 2007 (PDT)

: I see that [[:Image:Geda_pcb_print_layout.png]] is currently in use on page [[GEDA Quickstart]]. Why would I want to delete an image that is currently in use? --[[User:DavidCary|DavidCary]] 13:01, 11 September 2008 (PDT)

== Spam ==

moved to [[spam]]

== Thanks ==

David, you left a comment on my dead blog way back in Jan about this and other Open Circuit wikis. Thanks!!!

I will see what I can contribute and learn here. --[[User:SamRose|SamRose]] 06:53, 9 May 2008 (PDT)

== Basic Circuits Page ==

I'd like to add some RF circuits to the Basic Circuits page. It seems to me pointful to break each entry out into it's own page. Is it alright if I do this? --[[User:Wackyvorlon|Wackyvorlon]] 15:01, 19 May 2008 (PDT)

Sure, go ahead and add RF circuits anywhere.
This is a wiki -- if we later decide to re-organize RF circuits elsewhere, that's easy enough to do.
--[[User:DavidCary|DavidCary]] 19:48, 20 May 2008 (PDT)

== Supporting More Image Type ==

Currently open circuit supports png, gif, jpg, jpeg formats. Is it possible to support svg as well? --[[User:Tcwden|Tcwden]] 04:51, 23 February 2009 (UTC)

: I see that the Mediawiki software we use can support SVG with a bit of setup. http://www.mediawiki.org/wiki/SVG . --[[User:DavidCary|DavidCary]] 05:15, 23 February 2009 (UTC)

Thank you. I think SVG is useful graphics format for our discussion because, being in vector format, it is more convenient to edit and resize if needed.--[[User:Tcwden|Tcwden]] 01:40, 25 February 2009 (UTC)

== Baudline Free Software ==

On the Open Circuits [[oscilloscope]] page,
I don't understand why you took "baudline" out of the "open source" section.
Anyone can buy the source code with a "GPL source code license" at
http://www.baudline.com/source_code.html
.
You have read what our [[Main Page]] says about "Selling Free Software", right?
GPL is open source, right?
--[[User:DavidCary|DavidCary]] 03:16, 26 October 2009 (UTC)

Sorry, I only read the license for the free download. Come to think of it, however, "The source code is expensive and it is intended for qualified corporate or institutional buyers" seems like a big deterrent to any hobbyist getting their hands on the source any time soon. While the software is technically GPL, it seems almost pointless to list it as such. I'm probably not going to modify it more than I've done though (listed it twice).

[[User:Cov|Cov]] 20:36, 26 October 2009 (UTC)

: I personally am more interested in the the "open-source freedom vs closed source" distinction than in the "zero money download vs pay money to download" distinction.
: Alas, as [http://www.gnu.org/philosophy/free-software-for-freedom.html Richard M. Stallman pointed out], there seems to be confusion around the word "free".

: Yes, "source code is expensive" is a big deterrent to hobbyists.
: Perhaps putting things in the technically correct category is "pointless". But if so, why bother using a category if it's not useful to our readers?
: The "PC Oscilloscopes" category looks even less useful, since (currently) it appears that every o'scope on entire the [[oscilloscope]] page seems to be in that category. (Is that just a formatting glitch?)
: Would different categories -- or no categories at all -- be more useful to our readers? --[[User:DavidCary|DavidCary]] 16:17, 7 November 2009 (UTC)

:: * I too care more about libre than gratis.
:: * I don't think I really put my finger on why it seemed wrongly categorized before but to me it's confusing to link to a piece of software's homepage, where the only downloadable version is non-free and say it is free software without reservation. The way it is now clears that up I think.
:: * Oops, I must have not been paying attention to the level of <code>=heading=</code> that was being used. Fixed the category mix-up.

:: [[User:Cov|Cov]] 21:10, 14 December 2009 (UTC)

Oscilloscope

2009-12-14T21:00:50Z

Cov: /* external links */

An '''oscilloscope''' (often abbreviated '''o'scope''' or '''scope''') displays signal voltages as a 2-D graph, usually as voltage (vertical axis) as a function of time (horizontal axis).

The ''probe'' of a o'scope is held against, or is clipped to, the metal wire carrying the signal of interest.

A '''dual-trace''' o'scope has 2 probes, so 2 different signals can be seen -- so not only the shape of the signal can be seen, but also the exact time from events on one signal to events on the other signal.

= Techniques =

Sometimes one wants to look at a 8-bit data bus -- typically one uses a "logic analyzer" to look at lots of time-aligned digital signals.
For a given number of signals to look at, oscilloscopes (which show the true analog waveform) are much more expensive than logic analyzers (which only show if a digital waveform is hi or low, above or below the logic threshold).
Many people buy both a (dual-trace) o'scope and a 16-trace logic analyzer, which together have a total cost less than one true 8-trace o'scope.

''... more techniques ...''

= Open Source Oscilloscopes =

Of course, you have to already have a working o'scope in order to build and test another o'scope, making this the same sort of chicken-and-egg problem as the [[Projects#RepRap | RepRap]] project, the [http://en.wikipedia.org/wiki/GNU_Compiler_Collection GCC project], and other projects David Cary finds interesting.

=PC Oscilloscopes=

==Open Hardware for PC Oscilloscopes==
===Bitscope===
* $550 BS100U: 2 analog inputs + 8 digital inputs, optically isolated, from BitScope Designs (MetaChip Pty. Ltd.) [http://bitscope.com/]; [http://www.endolith.com/wordpress/2008/06/17/bitscope/ review by Endolith]

===MultiAnalyser===
Some people on the PIClist have been discussing designing an open-source oscilloscope.

* I think initial discussions occured on the [http://www.piclist.com/techref/postbot.asp?by=thread&id=%5BEE%5D+scope+project+anyone%3F&tgt=browse "[EE] scope project anyone?"] thread [http://www.piclist.com/techref/postbot.asp?by=time&id=piclist\2004\09\17\111014a.txt] at PIClist.
* Later discussion moved to the [http://tech.groups.yahoo.com/group/MultiAnalyser/ "MultiAnalyser" group at Yahoo]

==Closed, COTS Hardware for PC Oscilloscopes==
* For low frequencies, pretty much any external sound card with a line input will work. External card line inputs generally have a range around 0-1 V whereas onboard microphone inputs only have up to about 50 mV, which just isn't enough sensitivity. The [http://vtluug.org/wiki/Lab-in-a-Box Virginia Tech Lab-in-a-Box] recommends the Behringer UCA202. To use a sound card oscilloscope on a regular basis, a circuit with variable attenuation is recommended (i.e. 1x and 10x). Compensation for the hardware and software gain can be done as part of the attenuator circuit or in software.

==PC Oscilloscope Software==

===Free Software===

* [http://sourceforge.net/projects/xoscope/ Sourceforge: xoscope] is a digital oscilloscope for Linux that uses input from a sound card or EsounD and/or a ProbeScope/osziFOX and will soon support Bitscope hardware. The sound card device is hard-coded but instructions for modifying it are on the [http://vtluug.org/wiki/Lab-in-a-Box#Software VTLUUG wiki].

* [http://www.baudline.com/source_code.html Baudline GPL version] is a signal analyzer designed for scientific visualization, using input from recorded data files or from a sound card. For Linux / Solaris. The source code is expensive and it is intended for qualified corporate or institutional buyers.

* [http://tomeko.net/miniscope_v3/ Miniscope v3] is a digital oscilloscope for Windows. It connects to device using external dll. Available libraries to connect with sound card, Microchip MCHPUSB Generic HID Demo and custom AT91SAM7S64 hardware.

===Non-Free Software===
* [http://www.baudline.com/what_is_baudline.html Baudline gratis download] (dual licensed, see Free Software entry).
* [http://www.zelscope.com/ Zelscope] Converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter. Windows trialware.
* [http://www.bitscope.com/software/dso/ BitScope DSO] is a digital oscilloscope logic analyzer for Linux and Windows. It works with BitScope hardware and is distributed as freeware.
* [http://www.zeitnitz.de/Christian/scope_en Zeitnitz Souncard Scope] and function generator. For Windows.

=Non-PC Oscilloscope Projects=
* [http://www.circuitcellar.com/archives/viewable/Zhang205/index.html "Handheld Multifunction Scope"] by Jingxi Zhang & Yang Zhang, 2007. "dual-channel oscilloscope supports 250 ksps for each channel". ... also: ohmmeter, capacitance meter, and inductance meter ... pulse generator ... small speaker and OLED output. All functions work stand-alone with OLED display, but it can also be to a host PC with the USB port to display waveforms on the PC display.
* [http://www.dansworkshop.com/electricity-and-electronics/homebuilt-oscilloscope.htm Dan's Workshop: Notes on converting that old compact tv set or computer monitor into an oscilloscope.]
* [http://www.intio.or.jp/jf10zl/tvosc.htm "TV Oscilloscope Adaptor"] "This ... adapter ... changes a TV to a Oscilloscope."
* Some people are discussing the possibility of somehow converting the (open-source) [[uWatch]] into a o'scope: [http://www.calcwatch.com/forum/viewtopic.php?id=139 WBL: watch based laboratory]

=Uncategorized=
* K3PTO http://www.qsl.net/k3pto/ 8 bit
* [http://massmind.org/techref/scenix/sxoscope/index.htm Massmind: "SX based O’Scope"] by Alberto Geraci of BTX Sistemas
* [http://www.semifluid.com/?p=9 "PIC12F675 Oscilloscope"]
* [http://zedomax.com/blog/2006/12/28/diy-hack-make-your-own-oscilloscope/ "DIY HACK - Make your own Oscilloscope"]
* [http://www.geocities.com/SiliconValley/Lakes/7156/articl3.htm "Solid State Oscilloscope"] by George Katz 1987 -- an extremely simple and small circuit that drives a 10 x 10 LED array. (Would it make sense to adapt the [[PointLess LED Array]] to be more like this?)

Epanorama has many links related to o'scopes and o'scope accessories [http://www.epanorama.net/links/measuring.html#oscilloscope].

=Oscilloscope Design Discussions=
*[http://www.edaboard.com/ftopic41841-30.html Digital oscilloscope Project] edaboard.com

== some low-cost oscilloscopes ==

some low-cost oscilloscopes, in no particular order.
''... it would be nice to mention # of analog input channels, # of digital input channels, whether it can be used under Linux, does it have output channels ... price should (?) include 2 analog probes, ... is it open hardware? ... anything else?''

* price name comments
* $150 (?) VELLEMAN HPS10 Hand Held Oscilloscope 10MHz sampling rate, LCD: 128x64 pixels [http://www.kitsusa.net/phpstore/html/VELLEMAN-HPS10-Hand-Held-Oscilloscope-989.html]
* $349.95 VT DSO-2815H,1x150MHz or 2x75MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $299.95 VT DSO-2810H,1x100MHz or 2x50MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $250 VT DSO-2810F,2x100MHz, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
*$150 Poscope basic 2 from PoLabs [http://poscope.com/ PoLabs], 2 analog channels, 16/8 digital channels, PC USB oscilloscope, spectrum analyzer, chart recorder, pattern generator, logic analyzer, PWM/ square generator
* $420 PicoScope 2202 from [http://picotech.com/ Pico Technology]([http://www.picotech.com/picoscope-2202.html ])([http://www.interwld.com/pico/pico-3000.htm ])([http://www.pc-oscilloscopes.com/3000.htm])
* $200 Hantek DSO-2090 USB PC Oscilloscope [http://www.beigly.com/catalog/hantek-dso2090-oscilloscope-p-96.html]
* $380.00 DSO2250 100MHz PC-SCOPE 250MS/s [http://world-educational-services.net/cart/index.php?main_page=product_info&cPath=56&products_id=134&zenid=68c155f8ccc626c8d316e8417b32dc5d]
* CAN 219.99 Syscomp Electronic Design DSO-101 [http://syscompdesign.com/] (Syscomp supports the "[https://sourceforge.net/projects/oip The Open Instrumentation Project]" [http://syscompdesign.com/oip.htm])
* EUR 427 ETC s.r.o. M520 Oscilloscope [http://etcsk.com/]
* $222 ANT8 : 8 Channel Logic Analyzer (EasySync)[http://easysync-ltd.com/]
* $200 PS40M10 : Swordfish Hand-Held Instrument (1 channel) USB (EasySync)
* $220 DS1M12 : Stingray Multi-Function Instrument (2 channel) USB (EasySync)
* under $600 : [[Jameco]] has some actual stand-alone oscilloscopes for under $600. So does www.tequipment.com - see Rigol 'scopes from China - good quality - also on eBay.
* under $200 : Carl's Electronics has some stand-alone and PC-hosted (parallel port?) oscilloscopes for under $200.[http://www.electronickits.com/gold/gold.htm]
* $170 HobbyLab USB oscilloscope [http://hobbylab.us/USBOscilloscope/Home.htm]
* $500 DS1022C : 2 Channel, 25 MHz Rigol Technologies Inc.[http://rigolna.com/]
* $999 CS320A Cleverscope [http://cleverscope.com/] (has a discussion forum[http://cleverscope.com/forum/])
* $167 DrDAQ "data logger" (parallel port) from Pico Technology [http://www.drdaq.com/]
* $970 NI USB-5132 : USB digitizer from National Instruments [http://sine.ni.com/nips/cds/view/p/lang/en/nid/203719]
* $139 Parallax USB Oscilloscope 2 analog inputs + trigger; 1 MS/s [http://parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/txtSearch/28014/List/1/ProductID/46/Default.aspx?SortField=ProductName%2cProductName]
* $170 PC USB Oscilloscope DiSco (HobbyLab, LLC). 2 analog inputs ( 200 KHz ) + 16 digital inputs (or 8 digital inputs + 8 digital outputs). [http://hobbylab.us/]
* $150 ST16B 10 MHz stand-alone oscilloscope, 2 analog inputs [http://www.electronickits.com/gold/gold.htm]
* $190 VEPCS100 ( PCS100 ) - PC Based Oscilloscope; 1 analog input ( 12 MHz ); optically isolated from PC [http://www.electronickits.com/gold/gold.htm]
* $950 DSO-8502 USB Oscilloscope, 2 analog inputs (250MSa/s) + external trigger; 1 digital output (trigger out); buffer: 512K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $799 DSO-8202 USB Oscilloscope, 2 analog inputs (200MSa/s) + external trigger; 1 digital output (trigger out); buffer: 128K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $108 LabJack U3 USB data acquisition and control device, 16 analog inputs ( 12 bit, 2.5 KSa/s at 12 bit resolution, 50 KSa/s at 8 bit resolution), buffer: 984 samples, 2 analog outputs, digital outputs [http://www.labjack.com/labjack_u3.php]
* $249 S2X100 USB Oscillloscope, 2 analog inputs (100Ms/s) with 8 bit resolution, buffer: 64K samples [http://www.dynoninstruments.com/products_s2x100.php?gclid=CNzyz_625pgCFQIyxwodgwSvMA]
* $495 ELAB-080 [http://www.dynoninstruments.com/products_elab080.php]
* $745 USBee AX-Plus, 2 analog inputs (Max 16 MS/s ?) and 8 digital inputs [http://www.usbee.com/ax.html]
* $90 DSO nano, 1 analog input (1 Ms/s) with 12 bit resolution; buffer: 4096 Point; waveform storage on SD card [http://www.seeedstudio.com/depot/micro-digital-storage-oscilloscopedso-nano-p-512.html]; [http://www.justblair.co.uk/seeed-studio-dso-nano-pocket-digital-storage-oscilloscope-review.html review by Justblair]

''FIXME: [http://measurementcomputing.com/cbicatalog/directory.asp?dept_id=403 Measurement Computing] has some wireless and USB analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.dataq.com/ DATAQ Instruments, Inc.] has some USB and Ethernet analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.designnotes.com/ DesignNotes.com, Inc.] has some USB and handheld LCD o'scopes from [http://www.velleman.be/ Velleman]: [http://www.vellemanusa.com/us/enu/product/list/?id=347914 Velleman oscilloscopes] -- add to the above list.''

''FIXME: [http://www.linkinstruments.com/oscilloscope.htm Link Instruments Inc.] has several USB o'scopes and "USB MSO" ("mixed signal o'scope"). Are they already listed above?''

EasySync[http://easysync-ltd.com/] is a distributor of RockyLogic's ANT8/etc products.

Test Equipment Solutions Today, Inc.[http://testsolu.com/] is a distributor of Rigol's DVM and oscilloscope products.

When you [http://search.ebay.com/search/search.dll?satitle=oscilloscope search eBay for oscilloscope], you might find some good deals.

= Further Reading =

* other [[hardware tool | good equipment to buy when getting started]]

= External Links =

* [http://www.embedded.com/columns/breakpoint/160902529?printable=true "Scoping out palm-sized USB oscilloscopes"] by Jack Ganssle 2005, Embedded Systems Design. A review of 3 USB oscilloscopes -- reader comments at the end mention a few more USB o'scopes. ''(FIXME: make sure all the scopes mentioned are included on the above list)''
* Keith has made a list of [http://www.techtravels.org/amiga/amigablog/?p=167 "PC USB logic analyzers that cost under $1000."][http://www.techtravels.org/tech/logicanalyzer.html], some of which can be used as an o'scope. ''Should I use the same $1000 price cut-off for the above list? Or perhaps double or halve it?''
* Brooke Clarke has posted a list of [http://prc68.com/I/PCO.html "PC based Oscilloscopes"]
* [http://en.wikipedia.org/wiki/Oscilloscope Wikipedia: oscilloscope]
* Other discussions of [http://forums.reprap.org/read.php?13,5086 "Cheap digital storage oscilloscope"]
* [http://www.ganssle.com/microscopes.htm The Ganssle Group reviews Inexpensive USB Scopes and Logic Analyzers]
* [http://massmind.org/techref/tools.htm Massmind: Tools] lists a few sources for a variety of tools used in electronics: o'scopes, logic analyzers, meters, waveform generators, etc.
* [http://ask.slashdot.org/askslashdot/04/02/28/0041233.shtml Slashdot: "Cheap PC Oscilloscopes - Any Recommendations?"]
* [http://slashdot.org/askslashdot/01/12/07/191220.shtml Slashdot: "Building a Cheap Oscilloscope Using Your PC?"]
* [http://www.epanorama.net/links/measuring.html#pcmeasuring ePanorama.net: "Using PC as a measurement instrument"] ''(FIXME: anything we should add to the above list?)''

----
[[Category:Techniques]][[Category:Test Equipment]]

Oscilloscope

2009-12-14T21:00:26Z

Cov: /* further reading */

An '''oscilloscope''' (often abbreviated '''o'scope''' or '''scope''') displays signal voltages as a 2-D graph, usually as voltage (vertical axis) as a function of time (horizontal axis).

The ''probe'' of a o'scope is held against, or is clipped to, the metal wire carrying the signal of interest.

A '''dual-trace''' o'scope has 2 probes, so 2 different signals can be seen -- so not only the shape of the signal can be seen, but also the exact time from events on one signal to events on the other signal.

= Techniques =

Sometimes one wants to look at a 8-bit data bus -- typically one uses a "logic analyzer" to look at lots of time-aligned digital signals.
For a given number of signals to look at, oscilloscopes (which show the true analog waveform) are much more expensive than logic analyzers (which only show if a digital waveform is hi or low, above or below the logic threshold).
Many people buy both a (dual-trace) o'scope and a 16-trace logic analyzer, which together have a total cost less than one true 8-trace o'scope.

''... more techniques ...''

= Open Source Oscilloscopes =

Of course, you have to already have a working o'scope in order to build and test another o'scope, making this the same sort of chicken-and-egg problem as the [[Projects#RepRap | RepRap]] project, the [http://en.wikipedia.org/wiki/GNU_Compiler_Collection GCC project], and other projects David Cary finds interesting.

=PC Oscilloscopes=

==Open Hardware for PC Oscilloscopes==
===Bitscope===
* $550 BS100U: 2 analog inputs + 8 digital inputs, optically isolated, from BitScope Designs (MetaChip Pty. Ltd.) [http://bitscope.com/]; [http://www.endolith.com/wordpress/2008/06/17/bitscope/ review by Endolith]

===MultiAnalyser===
Some people on the PIClist have been discussing designing an open-source oscilloscope.

* I think initial discussions occured on the [http://www.piclist.com/techref/postbot.asp?by=thread&id=%5BEE%5D+scope+project+anyone%3F&tgt=browse "[EE] scope project anyone?"] thread [http://www.piclist.com/techref/postbot.asp?by=time&id=piclist\2004\09\17\111014a.txt] at PIClist.
* Later discussion moved to the [http://tech.groups.yahoo.com/group/MultiAnalyser/ "MultiAnalyser" group at Yahoo]

==Closed, COTS Hardware for PC Oscilloscopes==
* For low frequencies, pretty much any external sound card with a line input will work. External card line inputs generally have a range around 0-1 V whereas onboard microphone inputs only have up to about 50 mV, which just isn't enough sensitivity. The [http://vtluug.org/wiki/Lab-in-a-Box Virginia Tech Lab-in-a-Box] recommends the Behringer UCA202. To use a sound card oscilloscope on a regular basis, a circuit with variable attenuation is recommended (i.e. 1x and 10x). Compensation for the hardware and software gain can be done as part of the attenuator circuit or in software.

==PC Oscilloscope Software==

===Free Software===

* [http://sourceforge.net/projects/xoscope/ Sourceforge: xoscope] is a digital oscilloscope for Linux that uses input from a sound card or EsounD and/or a ProbeScope/osziFOX and will soon support Bitscope hardware. The sound card device is hard-coded but instructions for modifying it are on the [http://vtluug.org/wiki/Lab-in-a-Box#Software VTLUUG wiki].

* [http://www.baudline.com/source_code.html Baudline GPL version] is a signal analyzer designed for scientific visualization, using input from recorded data files or from a sound card. For Linux / Solaris. The source code is expensive and it is intended for qualified corporate or institutional buyers.

* [http://tomeko.net/miniscope_v3/ Miniscope v3] is a digital oscilloscope for Windows. It connects to device using external dll. Available libraries to connect with sound card, Microchip MCHPUSB Generic HID Demo and custom AT91SAM7S64 hardware.

===Non-Free Software===
* [http://www.baudline.com/what_is_baudline.html Baudline gratis download] (dual licensed, see Free Software entry).
* [http://www.zelscope.com/ Zelscope] Converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter. Windows trialware.
* [http://www.bitscope.com/software/dso/ BitScope DSO] is a digital oscilloscope logic analyzer for Linux and Windows. It works with BitScope hardware and is distributed as freeware.
* [http://www.zeitnitz.de/Christian/scope_en Zeitnitz Souncard Scope] and function generator. For Windows.

=Non-PC Oscilloscope Projects=
* [http://www.circuitcellar.com/archives/viewable/Zhang205/index.html "Handheld Multifunction Scope"] by Jingxi Zhang & Yang Zhang, 2007. "dual-channel oscilloscope supports 250 ksps for each channel". ... also: ohmmeter, capacitance meter, and inductance meter ... pulse generator ... small speaker and OLED output. All functions work stand-alone with OLED display, but it can also be to a host PC with the USB port to display waveforms on the PC display.
* [http://www.dansworkshop.com/electricity-and-electronics/homebuilt-oscilloscope.htm Dan's Workshop: Notes on converting that old compact tv set or computer monitor into an oscilloscope.]
* [http://www.intio.or.jp/jf10zl/tvosc.htm "TV Oscilloscope Adaptor"] "This ... adapter ... changes a TV to a Oscilloscope."
* Some people are discussing the possibility of somehow converting the (open-source) [[uWatch]] into a o'scope: [http://www.calcwatch.com/forum/viewtopic.php?id=139 WBL: watch based laboratory]

=Uncategorized=
* K3PTO http://www.qsl.net/k3pto/ 8 bit
* [http://massmind.org/techref/scenix/sxoscope/index.htm Massmind: "SX based O’Scope"] by Alberto Geraci of BTX Sistemas
* [http://www.semifluid.com/?p=9 "PIC12F675 Oscilloscope"]
* [http://zedomax.com/blog/2006/12/28/diy-hack-make-your-own-oscilloscope/ "DIY HACK - Make your own Oscilloscope"]
* [http://www.geocities.com/SiliconValley/Lakes/7156/articl3.htm "Solid State Oscilloscope"] by George Katz 1987 -- an extremely simple and small circuit that drives a 10 x 10 LED array. (Would it make sense to adapt the [[PointLess LED Array]] to be more like this?)

Epanorama has many links related to o'scopes and o'scope accessories [http://www.epanorama.net/links/measuring.html#oscilloscope].

=Oscilloscope Design Discussions=
*[http://www.edaboard.com/ftopic41841-30.html Digital oscilloscope Project] edaboard.com

== some low-cost oscilloscopes ==

some low-cost oscilloscopes, in no particular order.
''... it would be nice to mention # of analog input channels, # of digital input channels, whether it can be used under Linux, does it have output channels ... price should (?) include 2 analog probes, ... is it open hardware? ... anything else?''

* price name comments
* $150 (?) VELLEMAN HPS10 Hand Held Oscilloscope 10MHz sampling rate, LCD: 128x64 pixels [http://www.kitsusa.net/phpstore/html/VELLEMAN-HPS10-Hand-Held-Oscilloscope-989.html]
* $349.95 VT DSO-2815H,1x150MHz or 2x75MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $299.95 VT DSO-2810H,1x100MHz or 2x50MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $250 VT DSO-2810F,2x100MHz, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
*$150 Poscope basic 2 from PoLabs [http://poscope.com/ PoLabs], 2 analog channels, 16/8 digital channels, PC USB oscilloscope, spectrum analyzer, chart recorder, pattern generator, logic analyzer, PWM/ square generator
* $420 PicoScope 2202 from [http://picotech.com/ Pico Technology]([http://www.picotech.com/picoscope-2202.html ])([http://www.interwld.com/pico/pico-3000.htm ])([http://www.pc-oscilloscopes.com/3000.htm])
* $200 Hantek DSO-2090 USB PC Oscilloscope [http://www.beigly.com/catalog/hantek-dso2090-oscilloscope-p-96.html]
* $380.00 DSO2250 100MHz PC-SCOPE 250MS/s [http://world-educational-services.net/cart/index.php?main_page=product_info&cPath=56&products_id=134&zenid=68c155f8ccc626c8d316e8417b32dc5d]
* CAN 219.99 Syscomp Electronic Design DSO-101 [http://syscompdesign.com/] (Syscomp supports the "[https://sourceforge.net/projects/oip The Open Instrumentation Project]" [http://syscompdesign.com/oip.htm])
* EUR 427 ETC s.r.o. M520 Oscilloscope [http://etcsk.com/]
* $222 ANT8 : 8 Channel Logic Analyzer (EasySync)[http://easysync-ltd.com/]
* $200 PS40M10 : Swordfish Hand-Held Instrument (1 channel) USB (EasySync)
* $220 DS1M12 : Stingray Multi-Function Instrument (2 channel) USB (EasySync)
* under $600 : [[Jameco]] has some actual stand-alone oscilloscopes for under $600. So does www.tequipment.com - see Rigol 'scopes from China - good quality - also on eBay.
* under $200 : Carl's Electronics has some stand-alone and PC-hosted (parallel port?) oscilloscopes for under $200.[http://www.electronickits.com/gold/gold.htm]
* $170 HobbyLab USB oscilloscope [http://hobbylab.us/USBOscilloscope/Home.htm]
* $500 DS1022C : 2 Channel, 25 MHz Rigol Technologies Inc.[http://rigolna.com/]
* $999 CS320A Cleverscope [http://cleverscope.com/] (has a discussion forum[http://cleverscope.com/forum/])
* $167 DrDAQ "data logger" (parallel port) from Pico Technology [http://www.drdaq.com/]
* $970 NI USB-5132 : USB digitizer from National Instruments [http://sine.ni.com/nips/cds/view/p/lang/en/nid/203719]
* $139 Parallax USB Oscilloscope 2 analog inputs + trigger; 1 MS/s [http://parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/txtSearch/28014/List/1/ProductID/46/Default.aspx?SortField=ProductName%2cProductName]
* $170 PC USB Oscilloscope DiSco (HobbyLab, LLC). 2 analog inputs ( 200 KHz ) + 16 digital inputs (or 8 digital inputs + 8 digital outputs). [http://hobbylab.us/]
* $150 ST16B 10 MHz stand-alone oscilloscope, 2 analog inputs [http://www.electronickits.com/gold/gold.htm]
* $190 VEPCS100 ( PCS100 ) - PC Based Oscilloscope; 1 analog input ( 12 MHz ); optically isolated from PC [http://www.electronickits.com/gold/gold.htm]
* $950 DSO-8502 USB Oscilloscope, 2 analog inputs (250MSa/s) + external trigger; 1 digital output (trigger out); buffer: 512K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $799 DSO-8202 USB Oscilloscope, 2 analog inputs (200MSa/s) + external trigger; 1 digital output (trigger out); buffer: 128K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $108 LabJack U3 USB data acquisition and control device, 16 analog inputs ( 12 bit, 2.5 KSa/s at 12 bit resolution, 50 KSa/s at 8 bit resolution), buffer: 984 samples, 2 analog outputs, digital outputs [http://www.labjack.com/labjack_u3.php]
* $249 S2X100 USB Oscillloscope, 2 analog inputs (100Ms/s) with 8 bit resolution, buffer: 64K samples [http://www.dynoninstruments.com/products_s2x100.php?gclid=CNzyz_625pgCFQIyxwodgwSvMA]
* $495 ELAB-080 [http://www.dynoninstruments.com/products_elab080.php]
* $745 USBee AX-Plus, 2 analog inputs (Max 16 MS/s ?) and 8 digital inputs [http://www.usbee.com/ax.html]
* $90 DSO nano, 1 analog input (1 Ms/s) with 12 bit resolution; buffer: 4096 Point; waveform storage on SD card [http://www.seeedstudio.com/depot/micro-digital-storage-oscilloscopedso-nano-p-512.html]; [http://www.justblair.co.uk/seeed-studio-dso-nano-pocket-digital-storage-oscilloscope-review.html review by Justblair]

''FIXME: [http://measurementcomputing.com/cbicatalog/directory.asp?dept_id=403 Measurement Computing] has some wireless and USB analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.dataq.com/ DATAQ Instruments, Inc.] has some USB and Ethernet analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.designnotes.com/ DesignNotes.com, Inc.] has some USB and handheld LCD o'scopes from [http://www.velleman.be/ Velleman]: [http://www.vellemanusa.com/us/enu/product/list/?id=347914 Velleman oscilloscopes] -- add to the above list.''

''FIXME: [http://www.linkinstruments.com/oscilloscope.htm Link Instruments Inc.] has several USB o'scopes and "USB MSO" ("mixed signal o'scope"). Are they already listed above?''

EasySync[http://easysync-ltd.com/] is a distributor of RockyLogic's ANT8/etc products.

Test Equipment Solutions Today, Inc.[http://testsolu.com/] is a distributor of Rigol's DVM and oscilloscope products.

When you [http://search.ebay.com/search/search.dll?satitle=oscilloscope search eBay for oscilloscope], you might find some good deals.

= Further Reading =

* other [[hardware tool | good equipment to buy when getting started]]

= external links =

* [http://www.embedded.com/columns/breakpoint/160902529?printable=true "Scoping out palm-sized USB oscilloscopes"] by Jack Ganssle 2005, Embedded Systems Design. A review of 3 USB oscilloscopes -- reader comments at the end mention a few more USB o'scopes. ''(FIXME: make sure all the scopes mentioned are included on the above list)''
* Keith has made a list of [http://www.techtravels.org/amiga/amigablog/?p=167 "PC USB logic analyzers that cost under $1000."][http://www.techtravels.org/tech/logicanalyzer.html], some of which can be used as an o'scope. ''Should I use the same $1000 price cut-off for the above list? Or perhaps double or halve it?''
* Brooke Clarke has posted a list of [http://prc68.com/I/PCO.html "PC based Oscilloscopes"]
* [http://en.wikipedia.org/wiki/Oscilloscope Wikipedia: oscilloscope]
* Other discussions of [http://forums.reprap.org/read.php?13,5086 "Cheap digital storage oscilloscope"]
* [http://www.ganssle.com/microscopes.htm The Ganssle Group reviews Inexpensive USB Scopes and Logic Analyzers]
* [http://massmind.org/techref/tools.htm Massmind: Tools] lists a few sources for a variety of tools used in electronics: o'scopes, logic analyzers, meters, waveform generators, etc.
* [http://ask.slashdot.org/askslashdot/04/02/28/0041233.shtml Slashdot: "Cheap PC Oscilloscopes - Any Recommendations?"]
* [http://slashdot.org/askslashdot/01/12/07/191220.shtml Slashdot: "Building a Cheap Oscilloscope Using Your PC?"]
* [http://www.epanorama.net/links/measuring.html#pcmeasuring ePanorama.net: "Using PC as a measurement instrument"] ''(FIXME: anything we should add to the above list?)''

----
[[Category:Techniques]][[Category:Test Equipment]]

Oscilloscope

2009-12-14T20:59:55Z

Cov:

An '''oscilloscope''' (often abbreviated '''o'scope''' or '''scope''') displays signal voltages as a 2-D graph, usually as voltage (vertical axis) as a function of time (horizontal axis).

The ''probe'' of a o'scope is held against, or is clipped to, the metal wire carrying the signal of interest.

A '''dual-trace''' o'scope has 2 probes, so 2 different signals can be seen -- so not only the shape of the signal can be seen, but also the exact time from events on one signal to events on the other signal.

= Techniques =

Sometimes one wants to look at a 8-bit data bus -- typically one uses a "logic analyzer" to look at lots of time-aligned digital signals.
For a given number of signals to look at, oscilloscopes (which show the true analog waveform) are much more expensive than logic analyzers (which only show if a digital waveform is hi or low, above or below the logic threshold).
Many people buy both a (dual-trace) o'scope and a 16-trace logic analyzer, which together have a total cost less than one true 8-trace o'scope.

''... more techniques ...''

= Open Source Oscilloscopes =

Of course, you have to already have a working o'scope in order to build and test another o'scope, making this the same sort of chicken-and-egg problem as the [[Projects#RepRap | RepRap]] project, the [http://en.wikipedia.org/wiki/GNU_Compiler_Collection GCC project], and other projects David Cary finds interesting.

=PC Oscilloscopes=

==Open Hardware for PC Oscilloscopes==
===Bitscope===
* $550 BS100U: 2 analog inputs + 8 digital inputs, optically isolated, from BitScope Designs (MetaChip Pty. Ltd.) [http://bitscope.com/]; [http://www.endolith.com/wordpress/2008/06/17/bitscope/ review by Endolith]

===MultiAnalyser===
Some people on the PIClist have been discussing designing an open-source oscilloscope.

* I think initial discussions occured on the [http://www.piclist.com/techref/postbot.asp?by=thread&id=%5BEE%5D+scope+project+anyone%3F&tgt=browse "[EE] scope project anyone?"] thread [http://www.piclist.com/techref/postbot.asp?by=time&id=piclist\2004\09\17\111014a.txt] at PIClist.
* Later discussion moved to the [http://tech.groups.yahoo.com/group/MultiAnalyser/ "MultiAnalyser" group at Yahoo]

==Closed, COTS Hardware for PC Oscilloscopes==
* For low frequencies, pretty much any external sound card with a line input will work. External card line inputs generally have a range around 0-1 V whereas onboard microphone inputs only have up to about 50 mV, which just isn't enough sensitivity. The [http://vtluug.org/wiki/Lab-in-a-Box Virginia Tech Lab-in-a-Box] recommends the Behringer UCA202. To use a sound card oscilloscope on a regular basis, a circuit with variable attenuation is recommended (i.e. 1x and 10x). Compensation for the hardware and software gain can be done as part of the attenuator circuit or in software.

==PC Oscilloscope Software==

===Free Software===

* [http://sourceforge.net/projects/xoscope/ Sourceforge: xoscope] is a digital oscilloscope for Linux that uses input from a sound card or EsounD and/or a ProbeScope/osziFOX and will soon support Bitscope hardware. The sound card device is hard-coded but instructions for modifying it are on the [http://vtluug.org/wiki/Lab-in-a-Box#Software VTLUUG wiki].

* [http://www.baudline.com/source_code.html Baudline GPL version] is a signal analyzer designed for scientific visualization, using input from recorded data files or from a sound card. For Linux / Solaris. The source code is expensive and it is intended for qualified corporate or institutional buyers.

* [http://tomeko.net/miniscope_v3/ Miniscope v3] is a digital oscilloscope for Windows. It connects to device using external dll. Available libraries to connect with sound card, Microchip MCHPUSB Generic HID Demo and custom AT91SAM7S64 hardware.

===Non-Free Software===
* [http://www.baudline.com/what_is_baudline.html Baudline gratis download] (dual licensed, see Free Software entry).
* [http://www.zelscope.com/ Zelscope] Converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter. Windows trialware.
* [http://www.bitscope.com/software/dso/ BitScope DSO] is a digital oscilloscope logic analyzer for Linux and Windows. It works with BitScope hardware and is distributed as freeware.
* [http://www.zeitnitz.de/Christian/scope_en Zeitnitz Souncard Scope] and function generator. For Windows.

=Non-PC Oscilloscope Projects=
* [http://www.circuitcellar.com/archives/viewable/Zhang205/index.html "Handheld Multifunction Scope"] by Jingxi Zhang & Yang Zhang, 2007. "dual-channel oscilloscope supports 250 ksps for each channel". ... also: ohmmeter, capacitance meter, and inductance meter ... pulse generator ... small speaker and OLED output. All functions work stand-alone with OLED display, but it can also be to a host PC with the USB port to display waveforms on the PC display.
* [http://www.dansworkshop.com/electricity-and-electronics/homebuilt-oscilloscope.htm Dan's Workshop: Notes on converting that old compact tv set or computer monitor into an oscilloscope.]
* [http://www.intio.or.jp/jf10zl/tvosc.htm "TV Oscilloscope Adaptor"] "This ... adapter ... changes a TV to a Oscilloscope."
* Some people are discussing the possibility of somehow converting the (open-source) [[uWatch]] into a o'scope: [http://www.calcwatch.com/forum/viewtopic.php?id=139 WBL: watch based laboratory]

=Uncategorized=
* K3PTO http://www.qsl.net/k3pto/ 8 bit
* [http://massmind.org/techref/scenix/sxoscope/index.htm Massmind: "SX based O’Scope"] by Alberto Geraci of BTX Sistemas
* [http://www.semifluid.com/?p=9 "PIC12F675 Oscilloscope"]
* [http://zedomax.com/blog/2006/12/28/diy-hack-make-your-own-oscilloscope/ "DIY HACK - Make your own Oscilloscope"]
* [http://www.geocities.com/SiliconValley/Lakes/7156/articl3.htm "Solid State Oscilloscope"] by George Katz 1987 -- an extremely simple and small circuit that drives a 10 x 10 LED array. (Would it make sense to adapt the [[PointLess LED Array]] to be more like this?)

Epanorama has many links related to o'scopes and o'scope accessories [http://www.epanorama.net/links/measuring.html#oscilloscope].

=Oscilloscope Design Discussions=
*[http://www.edaboard.com/ftopic41841-30.html Digital oscilloscope Project] edaboard.com

== some low-cost oscilloscopes ==

some low-cost oscilloscopes, in no particular order.
''... it would be nice to mention # of analog input channels, # of digital input channels, whether it can be used under Linux, does it have output channels ... price should (?) include 2 analog probes, ... is it open hardware? ... anything else?''

* price name comments
* $150 (?) VELLEMAN HPS10 Hand Held Oscilloscope 10MHz sampling rate, LCD: 128x64 pixels [http://www.kitsusa.net/phpstore/html/VELLEMAN-HPS10-Hand-Held-Oscilloscope-989.html]
* $349.95 VT DSO-2815H,1x150MHz or 2x75MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $299.95 VT DSO-2810H,1x100MHz or 2x50MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $250 VT DSO-2810F,2x100MHz, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
*$150 Poscope basic 2 from PoLabs [http://poscope.com/ PoLabs], 2 analog channels, 16/8 digital channels, PC USB oscilloscope, spectrum analyzer, chart recorder, pattern generator, logic analyzer, PWM/ square generator
* $420 PicoScope 2202 from [http://picotech.com/ Pico Technology]([http://www.picotech.com/picoscope-2202.html ])([http://www.interwld.com/pico/pico-3000.htm ])([http://www.pc-oscilloscopes.com/3000.htm])
* $200 Hantek DSO-2090 USB PC Oscilloscope [http://www.beigly.com/catalog/hantek-dso2090-oscilloscope-p-96.html]
* $380.00 DSO2250 100MHz PC-SCOPE 250MS/s [http://world-educational-services.net/cart/index.php?main_page=product_info&cPath=56&products_id=134&zenid=68c155f8ccc626c8d316e8417b32dc5d]
* CAN 219.99 Syscomp Electronic Design DSO-101 [http://syscompdesign.com/] (Syscomp supports the "[https://sourceforge.net/projects/oip The Open Instrumentation Project]" [http://syscompdesign.com/oip.htm])
* EUR 427 ETC s.r.o. M520 Oscilloscope [http://etcsk.com/]
* $222 ANT8 : 8 Channel Logic Analyzer (EasySync)[http://easysync-ltd.com/]
* $200 PS40M10 : Swordfish Hand-Held Instrument (1 channel) USB (EasySync)
* $220 DS1M12 : Stingray Multi-Function Instrument (2 channel) USB (EasySync)
* under $600 : [[Jameco]] has some actual stand-alone oscilloscopes for under $600. So does www.tequipment.com - see Rigol 'scopes from China - good quality - also on eBay.
* under $200 : Carl's Electronics has some stand-alone and PC-hosted (parallel port?) oscilloscopes for under $200.[http://www.electronickits.com/gold/gold.htm]
* $170 HobbyLab USB oscilloscope [http://hobbylab.us/USBOscilloscope/Home.htm]
* $500 DS1022C : 2 Channel, 25 MHz Rigol Technologies Inc.[http://rigolna.com/]
* $999 CS320A Cleverscope [http://cleverscope.com/] (has a discussion forum[http://cleverscope.com/forum/])
* $167 DrDAQ "data logger" (parallel port) from Pico Technology [http://www.drdaq.com/]
* $970 NI USB-5132 : USB digitizer from National Instruments [http://sine.ni.com/nips/cds/view/p/lang/en/nid/203719]
* $139 Parallax USB Oscilloscope 2 analog inputs + trigger; 1 MS/s [http://parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/txtSearch/28014/List/1/ProductID/46/Default.aspx?SortField=ProductName%2cProductName]
* $170 PC USB Oscilloscope DiSco (HobbyLab, LLC). 2 analog inputs ( 200 KHz ) + 16 digital inputs (or 8 digital inputs + 8 digital outputs). [http://hobbylab.us/]
* $150 ST16B 10 MHz stand-alone oscilloscope, 2 analog inputs [http://www.electronickits.com/gold/gold.htm]
* $190 VEPCS100 ( PCS100 ) - PC Based Oscilloscope; 1 analog input ( 12 MHz ); optically isolated from PC [http://www.electronickits.com/gold/gold.htm]
* $950 DSO-8502 USB Oscilloscope, 2 analog inputs (250MSa/s) + external trigger; 1 digital output (trigger out); buffer: 512K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $799 DSO-8202 USB Oscilloscope, 2 analog inputs (200MSa/s) + external trigger; 1 digital output (trigger out); buffer: 128K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $108 LabJack U3 USB data acquisition and control device, 16 analog inputs ( 12 bit, 2.5 KSa/s at 12 bit resolution, 50 KSa/s at 8 bit resolution), buffer: 984 samples, 2 analog outputs, digital outputs [http://www.labjack.com/labjack_u3.php]
* $249 S2X100 USB Oscillloscope, 2 analog inputs (100Ms/s) with 8 bit resolution, buffer: 64K samples [http://www.dynoninstruments.com/products_s2x100.php?gclid=CNzyz_625pgCFQIyxwodgwSvMA]
* $495 ELAB-080 [http://www.dynoninstruments.com/products_elab080.php]
* $745 USBee AX-Plus, 2 analog inputs (Max 16 MS/s ?) and 8 digital inputs [http://www.usbee.com/ax.html]
* $90 DSO nano, 1 analog input (1 Ms/s) with 12 bit resolution; buffer: 4096 Point; waveform storage on SD card [http://www.seeedstudio.com/depot/micro-digital-storage-oscilloscopedso-nano-p-512.html]; [http://www.justblair.co.uk/seeed-studio-dso-nano-pocket-digital-storage-oscilloscope-review.html review by Justblair]

''FIXME: [http://measurementcomputing.com/cbicatalog/directory.asp?dept_id=403 Measurement Computing] has some wireless and USB analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.dataq.com/ DATAQ Instruments, Inc.] has some USB and Ethernet analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.designnotes.com/ DesignNotes.com, Inc.] has some USB and handheld LCD o'scopes from [http://www.velleman.be/ Velleman]: [http://www.vellemanusa.com/us/enu/product/list/?id=347914 Velleman oscilloscopes] -- add to the above list.''

''FIXME: [http://www.linkinstruments.com/oscilloscope.htm Link Instruments Inc.] has several USB o'scopes and "USB MSO" ("mixed signal o'scope"). Are they already listed above?''

EasySync[http://easysync-ltd.com/] is a distributor of RockyLogic's ANT8/etc products.

Test Equipment Solutions Today, Inc.[http://testsolu.com/] is a distributor of Rigol's DVM and oscilloscope products.

When you [http://search.ebay.com/search/search.dll?satitle=oscilloscope search eBay for oscilloscope], you might find some good deals.

= further reading =

* other [[hardware tool | good equipment to buy when getting started]]

= external links =

* [http://www.embedded.com/columns/breakpoint/160902529?printable=true "Scoping out palm-sized USB oscilloscopes"] by Jack Ganssle 2005, Embedded Systems Design. A review of 3 USB oscilloscopes -- reader comments at the end mention a few more USB o'scopes. ''(FIXME: make sure all the scopes mentioned are included on the above list)''
* Keith has made a list of [http://www.techtravels.org/amiga/amigablog/?p=167 "PC USB logic analyzers that cost under $1000."][http://www.techtravels.org/tech/logicanalyzer.html], some of which can be used as an o'scope. ''Should I use the same $1000 price cut-off for the above list? Or perhaps double or halve it?''
* Brooke Clarke has posted a list of [http://prc68.com/I/PCO.html "PC based Oscilloscopes"]
* [http://en.wikipedia.org/wiki/Oscilloscope Wikipedia: oscilloscope]
* Other discussions of [http://forums.reprap.org/read.php?13,5086 "Cheap digital storage oscilloscope"]
* [http://www.ganssle.com/microscopes.htm The Ganssle Group reviews Inexpensive USB Scopes and Logic Analyzers]
* [http://massmind.org/techref/tools.htm Massmind: Tools] lists a few sources for a variety of tools used in electronics: o'scopes, logic analyzers, meters, waveform generators, etc.
* [http://ask.slashdot.org/askslashdot/04/02/28/0041233.shtml Slashdot: "Cheap PC Oscilloscopes - Any Recommendations?"]
* [http://slashdot.org/askslashdot/01/12/07/191220.shtml Slashdot: "Building a Cheap Oscilloscope Using Your PC?"]
* [http://www.epanorama.net/links/measuring.html#pcmeasuring ePanorama.net: "Using PC as a measurement instrument"] ''(FIXME: anything we should add to the above list?)''

----
[[Category:Techniques]][[Category:Test Equipment]]

Oscilloscope

2009-12-14T20:58:18Z

Cov: /* Free Software */

An '''oscilloscope''' (often abbreviated '''o'scope''' or '''scope''') displays signal voltages as a 2-D graph, usually as voltage (vertical axis) as a function of time (horizontal axis).

The ''probe'' of a o'scope is held against, or is clipped to, the metal wire carrying the signal of interest.

A '''dual-trace''' o'scope has 2 probes, so 2 different signals can be seen -- so not only the shape of the signal can be seen, but also the exact time from events on one signal to events on the other signal.

= Techniques =

Sometimes one wants to look at a 8-bit data bus -- typically one uses a "logic analyzer" to look at lots of time-aligned digital signals.
For a given number of signals to look at, oscilloscopes (which show the true analog waveform) are much more expensive than logic analyzers (which only show if a digital waveform is hi or low, above or below the logic threshold).
Many people buy both a (dual-trace) o'scope and a 16-trace logic analyzer, which together have a total cost less than one true 8-trace o'scope.

''... more techniques ...''

= Open Source Oscilloscopes =

Of course, you have to already have a working o'scope in order to build and test another o'scope, making this the same sort of chicken-and-egg problem as the [[Projects#RepRap | RepRap]] project, the [http://en.wikipedia.org/wiki/GNU_Compiler_Collection GCC project], and other projects David Cary finds interesting.

=PC Oscilloscopes=

==Open Hardware for PC Oscilloscopes==
===Bitscope===
* $550 BS100U: 2 analog inputs + 8 digital inputs, optically isolated, from BitScope Designs (MetaChip Pty. Ltd.) [http://bitscope.com/]; [http://www.endolith.com/wordpress/2008/06/17/bitscope/ review by Endolith]

===MultiAnalyser===
Some people on the PIClist have been discussing designing an open-source oscilloscope.

* I think initial discussions occured on the [http://www.piclist.com/techref/postbot.asp?by=thread&id=%5BEE%5D+scope+project+anyone%3F&tgt=browse "[EE] scope project anyone?"] thread [http://www.piclist.com/techref/postbot.asp?by=time&id=piclist\2004\09\17\111014a.txt] at PIClist.
* Later discussion moved to the [http://tech.groups.yahoo.com/group/MultiAnalyser/ "MultiAnalyser" group at Yahoo]

==Closed, COTS Hardware for PC Oscilloscopes==
* For low frequencies, pretty much any external sound card with a line input will work. External card line inputs generally have a range around 0-1 V whereas onboard microphone inputs only have up to about 50 mV, which just isn't enough sensitivity. The [http://vtluug.org/wiki/Lab-in-a-Box Virginia Tech Lab-in-a-Box] recommends the Behringer UCA202. To use a sound card oscilloscope on a regular basis, a circuit with variable attenuation is recommended (i.e. 1x and 10x). Compensation for the hardware and software gain can be done as part of the attenuator circuit or in software.

==PC Oscilloscope Software==

===Free Software===

* [http://sourceforge.net/projects/xoscope/ Sourceforge: xoscope] is a digital oscilloscope for Linux that uses input from a sound card or EsounD and/or a ProbeScope/osziFOX and will soon support Bitscope hardware. The sound card device is hard-coded but instructions for modifying it are on the [http://vtluug.org/wiki/Lab-in-a-Box#Software VTLUUG wiki].

* [http://www.baudline.com/source_code.html Baudline GPL version] is a signal analyzer designed for scientific visualization, using input from recorded data files or from a sound card. For Linux / Solaris. The source code is expensive and it is intended for qualified corporate or institutional buyers.

* [http://tomeko.net/miniscope_v3/ Miniscope v3] is a digital oscilloscope for Windows. It connects to device using external dll. Available libraries to connect with sound card, Microchip MCHPUSB Generic HID Demo and custom AT91SAM7S64 hardware.

===Non-Free Software===
* [http://www.baudline.com/what_is_baudline.html Baudline gratis download] (dual licensed, see Free Software entry).
* [http://www.zelscope.com/ Zelscope] Converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter. Windows trialware.
* [http://www.bitscope.com/software/dso/ BitScope DSO] is a digital oscilloscope logic analyzer for Linux and Windows. It works with BitScope hardware and is distributed as freeware.
* [http://www.zeitnitz.de/Christian/scope_en Zeitnitz Souncard Scope] and function generator. For Windows.

==Non-PC Oscilloscope Projects==
* [http://www.circuitcellar.com/archives/viewable/Zhang205/index.html "Handheld Multifunction Scope"] by Jingxi Zhang & Yang Zhang, 2007. "dual-channel oscilloscope supports 250 ksps for each channel". ... also: ohmmeter, capacitance meter, and inductance meter ... pulse generator ... small speaker and OLED output. All functions work stand-alone with OLED display, but it can also be to a host PC with the USB port to display waveforms on the PC display.
* [http://www.dansworkshop.com/electricity-and-electronics/homebuilt-oscilloscope.htm Dan's Workshop: Notes on converting that old compact tv set or computer monitor into an oscilloscope.]
* [http://www.intio.or.jp/jf10zl/tvosc.htm "TV Oscilloscope Adaptor"] "This ... adapter ... changes a TV to a Oscilloscope."
* Some people are discussing the possibility of somehow converting the (open-source) [[uWatch]] into a o'scope: [http://www.calcwatch.com/forum/viewtopic.php?id=139 WBL: watch based laboratory]

==Uncategorized==
* K3PTO http://www.qsl.net/k3pto/ 8 bit
* [http://massmind.org/techref/scenix/sxoscope/index.htm Massmind: "SX based O’Scope"] by Alberto Geraci of BTX Sistemas
* [http://www.semifluid.com/?p=9 "PIC12F675 Oscilloscope"]
* [http://zedomax.com/blog/2006/12/28/diy-hack-make-your-own-oscilloscope/ "DIY HACK - Make your own Oscilloscope"]
* [http://www.geocities.com/SiliconValley/Lakes/7156/articl3.htm "Solid State Oscilloscope"] by George Katz 1987 -- an extremely simple and small circuit that drives a 10 x 10 LED array. (Would it make sense to adapt the [[PointLess LED Array]] to be more like this?)

Epanorama has many links related to o'scopes and o'scope accessories [http://www.epanorama.net/links/measuring.html#oscilloscope].

==Oscilloscope Design Discussions==
*[http://www.edaboard.com/ftopic41841-30.html Digital oscilloscope Project] edaboard.com

== some low-cost oscilloscopes ==

some low-cost oscilloscopes, in no particular order.
''... it would be nice to mention # of analog input channels, # of digital input channels, whether it can be used under Linux, does it have output channels ... price should (?) include 2 analog probes, ... is it open hardware? ... anything else?''

* price name comments
* $150 (?) VELLEMAN HPS10 Hand Held Oscilloscope 10MHz sampling rate, LCD: 128x64 pixels [http://www.kitsusa.net/phpstore/html/VELLEMAN-HPS10-Hand-Held-Oscilloscope-989.html]
* $349.95 VT DSO-2815H,1x150MHz or 2x75MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $299.95 VT DSO-2810H,1x100MHz or 2x50MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $250 VT DSO-2810F,2x100MHz, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
*$150 Poscope basic 2 from PoLabs [http://poscope.com/ PoLabs], 2 analog channels, 16/8 digital channels, PC USB oscilloscope, spectrum analyzer, chart recorder, pattern generator, logic analyzer, PWM/ square generator
* $420 PicoScope 2202 from [http://picotech.com/ Pico Technology]([http://www.picotech.com/picoscope-2202.html ])([http://www.interwld.com/pico/pico-3000.htm ])([http://www.pc-oscilloscopes.com/3000.htm])
* $200 Hantek DSO-2090 USB PC Oscilloscope [http://www.beigly.com/catalog/hantek-dso2090-oscilloscope-p-96.html]
* $380.00 DSO2250 100MHz PC-SCOPE 250MS/s [http://world-educational-services.net/cart/index.php?main_page=product_info&cPath=56&products_id=134&zenid=68c155f8ccc626c8d316e8417b32dc5d]
* CAN 219.99 Syscomp Electronic Design DSO-101 [http://syscompdesign.com/] (Syscomp supports the "[https://sourceforge.net/projects/oip The Open Instrumentation Project]" [http://syscompdesign.com/oip.htm])
* EUR 427 ETC s.r.o. M520 Oscilloscope [http://etcsk.com/]
* $222 ANT8 : 8 Channel Logic Analyzer (EasySync)[http://easysync-ltd.com/]
* $200 PS40M10 : Swordfish Hand-Held Instrument (1 channel) USB (EasySync)
* $220 DS1M12 : Stingray Multi-Function Instrument (2 channel) USB (EasySync)
* under $600 : [[Jameco]] has some actual stand-alone oscilloscopes for under $600. So does www.tequipment.com - see Rigol 'scopes from China - good quality - also on eBay.
* under $200 : Carl's Electronics has some stand-alone and PC-hosted (parallel port?) oscilloscopes for under $200.[http://www.electronickits.com/gold/gold.htm]
* $170 HobbyLab USB oscilloscope [http://hobbylab.us/USBOscilloscope/Home.htm]
* $500 DS1022C : 2 Channel, 25 MHz Rigol Technologies Inc.[http://rigolna.com/]
* $999 CS320A Cleverscope [http://cleverscope.com/] (has a discussion forum[http://cleverscope.com/forum/])
* $167 DrDAQ "data logger" (parallel port) from Pico Technology [http://www.drdaq.com/]
* $970 NI USB-5132 : USB digitizer from National Instruments [http://sine.ni.com/nips/cds/view/p/lang/en/nid/203719]
* $139 Parallax USB Oscilloscope 2 analog inputs + trigger; 1 MS/s [http://parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/txtSearch/28014/List/1/ProductID/46/Default.aspx?SortField=ProductName%2cProductName]
* $170 PC USB Oscilloscope DiSco (HobbyLab, LLC). 2 analog inputs ( 200 KHz ) + 16 digital inputs (or 8 digital inputs + 8 digital outputs). [http://hobbylab.us/]
* $150 ST16B 10 MHz stand-alone oscilloscope, 2 analog inputs [http://www.electronickits.com/gold/gold.htm]
* $190 VEPCS100 ( PCS100 ) - PC Based Oscilloscope; 1 analog input ( 12 MHz ); optically isolated from PC [http://www.electronickits.com/gold/gold.htm]
* $950 DSO-8502 USB Oscilloscope, 2 analog inputs (250MSa/s) + external trigger; 1 digital output (trigger out); buffer: 512K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $799 DSO-8202 USB Oscilloscope, 2 analog inputs (200MSa/s) + external trigger; 1 digital output (trigger out); buffer: 128K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $108 LabJack U3 USB data acquisition and control device, 16 analog inputs ( 12 bit, 2.5 KSa/s at 12 bit resolution, 50 KSa/s at 8 bit resolution), buffer: 984 samples, 2 analog outputs, digital outputs [http://www.labjack.com/labjack_u3.php]
* $249 S2X100 USB Oscillloscope, 2 analog inputs (100Ms/s) with 8 bit resolution, buffer: 64K samples [http://www.dynoninstruments.com/products_s2x100.php?gclid=CNzyz_625pgCFQIyxwodgwSvMA]
* $495 ELAB-080 [http://www.dynoninstruments.com/products_elab080.php]
* $745 USBee AX-Plus, 2 analog inputs (Max 16 MS/s ?) and 8 digital inputs [http://www.usbee.com/ax.html]
* $90 DSO nano, 1 analog input (1 Ms/s) with 12 bit resolution; buffer: 4096 Point; waveform storage on SD card [http://www.seeedstudio.com/depot/micro-digital-storage-oscilloscopedso-nano-p-512.html]; [http://www.justblair.co.uk/seeed-studio-dso-nano-pocket-digital-storage-oscilloscope-review.html review by Justblair]

''FIXME: [http://measurementcomputing.com/cbicatalog/directory.asp?dept_id=403 Measurement Computing] has some wireless and USB analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.dataq.com/ DATAQ Instruments, Inc.] has some USB and Ethernet analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.designnotes.com/ DesignNotes.com, Inc.] has some USB and handheld LCD o'scopes from [http://www.velleman.be/ Velleman]: [http://www.vellemanusa.com/us/enu/product/list/?id=347914 Velleman oscilloscopes] -- add to the above list.''

''FIXME: [http://www.linkinstruments.com/oscilloscope.htm Link Instruments Inc.] has several USB o'scopes and "USB MSO" ("mixed signal o'scope"). Are they already listed above?''

EasySync[http://easysync-ltd.com/] is a distributor of RockyLogic's ANT8/etc products.

Test Equipment Solutions Today, Inc.[http://testsolu.com/] is a distributor of Rigol's DVM and oscilloscope products.

When you [http://search.ebay.com/search/search.dll?satitle=oscilloscope search eBay for oscilloscope], you might find some good deals.

== further reading ==

* other [[hardware tool | good equipment to buy when getting started]]

== external links ==

* [http://www.embedded.com/columns/breakpoint/160902529?printable=true "Scoping out palm-sized USB oscilloscopes"] by Jack Ganssle 2005, Embedded Systems Design. A review of 3 USB oscilloscopes -- reader comments at the end mention a few more USB o'scopes. ''(FIXME: make sure all the scopes mentioned are included on the above list)''
* Keith has made a list of [http://www.techtravels.org/amiga/amigablog/?p=167 "PC USB logic analyzers that cost under $1000."][http://www.techtravels.org/tech/logicanalyzer.html], some of which can be used as an o'scope. ''Should I use the same $1000 price cut-off for the above list? Or perhaps double or halve it?''
* Brooke Clarke has posted a list of [http://prc68.com/I/PCO.html "PC based Oscilloscopes"]
* [http://en.wikipedia.org/wiki/Oscilloscope Wikipedia: oscilloscope]
* Other discussions of [http://forums.reprap.org/read.php?13,5086 "Cheap digital storage oscilloscope"]
* [http://www.ganssle.com/microscopes.htm The Ganssle Group reviews Inexpensive USB Scopes and Logic Analyzers]
* [http://massmind.org/techref/tools.htm Massmind: Tools] lists a few sources for a variety of tools used in electronics: o'scopes, logic analyzers, meters, waveform generators, etc.
* [http://ask.slashdot.org/askslashdot/04/02/28/0041233.shtml Slashdot: "Cheap PC Oscilloscopes - Any Recommendations?"]
* [http://slashdot.org/askslashdot/01/12/07/191220.shtml Slashdot: "Building a Cheap Oscilloscope Using Your PC?"]
* [http://www.epanorama.net/links/measuring.html#pcmeasuring ePanorama.net: "Using PC as a measurement instrument"] ''(FIXME: anything we should add to the above list?)''

----
[[Category:Techniques]][[Category:Test Equipment]]

Oscilloscope

2009-12-14T20:46:40Z

Cov: /* Closed, COTS Hardware for PC Oscilloscopes */

An '''oscilloscope''' (often abbreviated '''o'scope''' or '''scope''') displays signal voltages as a 2-D graph, usually as voltage (vertical axis) as a function of time (horizontal axis).

The ''probe'' of a o'scope is held against, or is clipped to, the metal wire carrying the signal of interest.

A '''dual-trace''' o'scope has 2 probes, so 2 different signals can be seen -- so not only the shape of the signal can be seen, but also the exact time from events on one signal to events on the other signal.

= Techniques =

Sometimes one wants to look at a 8-bit data bus -- typically one uses a "logic analyzer" to look at lots of time-aligned digital signals.
For a given number of signals to look at, oscilloscopes (which show the true analog waveform) are much more expensive than logic analyzers (which only show if a digital waveform is hi or low, above or below the logic threshold).
Many people buy both a (dual-trace) o'scope and a 16-trace logic analyzer, which together have a total cost less than one true 8-trace o'scope.

''... more techniques ...''

= Open Source Oscilloscopes =

Of course, you have to already have a working o'scope in order to build and test another o'scope, making this the same sort of chicken-and-egg problem as the [[Projects#RepRap | RepRap]] project, the [http://en.wikipedia.org/wiki/GNU_Compiler_Collection GCC project], and other projects David Cary finds interesting.

=PC Oscilloscopes=

==Open Hardware for PC Oscilloscopes==
===Bitscope===
* $550 BS100U: 2 analog inputs + 8 digital inputs, optically isolated, from BitScope Designs (MetaChip Pty. Ltd.) [http://bitscope.com/]; [http://www.endolith.com/wordpress/2008/06/17/bitscope/ review by Endolith]

===MultiAnalyser===
Some people on the PIClist have been discussing designing an open-source oscilloscope.

* I think initial discussions occured on the [http://www.piclist.com/techref/postbot.asp?by=thread&id=%5BEE%5D+scope+project+anyone%3F&tgt=browse "[EE] scope project anyone?"] thread [http://www.piclist.com/techref/postbot.asp?by=time&id=piclist\2004\09\17\111014a.txt] at PIClist.
* Later discussion moved to the [http://tech.groups.yahoo.com/group/MultiAnalyser/ "MultiAnalyser" group at Yahoo]

==Closed, COTS Hardware for PC Oscilloscopes==
* For low frequencies, pretty much any external sound card with a line input will work. External card line inputs generally have a range around 0-1 V whereas onboard microphone inputs only have up to about 50 mV, which just isn't enough sensitivity. The [http://vtluug.org/wiki/Lab-in-a-Box Virginia Tech Lab-in-a-Box] recommends the Behringer UCA202. To use a sound card oscilloscope on a regular basis, a circuit with variable attenuation is recommended (i.e. 1x and 10x). Compensation for the hardware and software gain can be done as part of the attenuator circuit or in software.

==PC Oscilloscope Software==

===Free Software===

* [http://sourceforge.net/projects/xoscope/ Sourceforge: xoscope] is a digital oscilloscope for Linux that uses input from a sound card or EsounD and/or a ProbeScope/osziFOX and will soon support Bitscope hardware.

* [http://www.baudline.com/source_code.html Baudline GPL version] is a signal analyzer designed for scientific visualization, using input from recorded data files or from a sound card. For Linux / Solaris. The source code is expensive and it is intended for qualified corporate or institutional buyers.

* [http://tomeko.net/miniscope_v3/ Miniscope v3] is a digital oscilloscope for Windows. It connects to device using external dll. Available libraries to connect with sound card, Microchip MCHPUSB Generic HID Demo and custom AT91SAM7S64 hardware.

===Non-Free Software===
* [http://www.baudline.com/what_is_baudline.html Baudline gratis download] (dual licensed, see Free Software entry).
* [http://www.zelscope.com/ Zelscope] Converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter. Windows trialware.
* [http://www.bitscope.com/software/dso/ BitScope DSO] is a digital oscilloscope logic analyzer for Linux and Windows. It works with BitScope hardware and is distributed as freeware.
* [http://www.zeitnitz.de/Christian/scope_en Zeitnitz Souncard Scope] and function generator. For Windows.

==Non-PC Oscilloscope Projects==
* [http://www.circuitcellar.com/archives/viewable/Zhang205/index.html "Handheld Multifunction Scope"] by Jingxi Zhang & Yang Zhang, 2007. "dual-channel oscilloscope supports 250 ksps for each channel". ... also: ohmmeter, capacitance meter, and inductance meter ... pulse generator ... small speaker and OLED output. All functions work stand-alone with OLED display, but it can also be to a host PC with the USB port to display waveforms on the PC display.
* [http://www.dansworkshop.com/electricity-and-electronics/homebuilt-oscilloscope.htm Dan's Workshop: Notes on converting that old compact tv set or computer monitor into an oscilloscope.]
* [http://www.intio.or.jp/jf10zl/tvosc.htm "TV Oscilloscope Adaptor"] "This ... adapter ... changes a TV to a Oscilloscope."
* Some people are discussing the possibility of somehow converting the (open-source) [[uWatch]] into a o'scope: [http://www.calcwatch.com/forum/viewtopic.php?id=139 WBL: watch based laboratory]

==Uncategorized==
* K3PTO http://www.qsl.net/k3pto/ 8 bit
* [http://massmind.org/techref/scenix/sxoscope/index.htm Massmind: "SX based O’Scope"] by Alberto Geraci of BTX Sistemas
* [http://www.semifluid.com/?p=9 "PIC12F675 Oscilloscope"]
* [http://zedomax.com/blog/2006/12/28/diy-hack-make-your-own-oscilloscope/ "DIY HACK - Make your own Oscilloscope"]
* [http://www.geocities.com/SiliconValley/Lakes/7156/articl3.htm "Solid State Oscilloscope"] by George Katz 1987 -- an extremely simple and small circuit that drives a 10 x 10 LED array. (Would it make sense to adapt the [[PointLess LED Array]] to be more like this?)

Epanorama has many links related to o'scopes and o'scope accessories [http://www.epanorama.net/links/measuring.html#oscilloscope].

==Oscilloscope Design Discussions==
*[http://www.edaboard.com/ftopic41841-30.html Digital oscilloscope Project] edaboard.com

== some low-cost oscilloscopes ==

some low-cost oscilloscopes, in no particular order.
''... it would be nice to mention # of analog input channels, # of digital input channels, whether it can be used under Linux, does it have output channels ... price should (?) include 2 analog probes, ... is it open hardware? ... anything else?''

* price name comments
* $150 (?) VELLEMAN HPS10 Hand Held Oscilloscope 10MHz sampling rate, LCD: 128x64 pixels [http://www.kitsusa.net/phpstore/html/VELLEMAN-HPS10-Hand-Held-Oscilloscope-989.html]
* $349.95 VT DSO-2815H,1x150MHz or 2x75MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $299.95 VT DSO-2810H,1x100MHz or 2x50MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $250 VT DSO-2810F,2x100MHz, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
*$150 Poscope basic 2 from PoLabs [http://poscope.com/ PoLabs], 2 analog channels, 16/8 digital channels, PC USB oscilloscope, spectrum analyzer, chart recorder, pattern generator, logic analyzer, PWM/ square generator
* $420 PicoScope 2202 from [http://picotech.com/ Pico Technology]([http://www.picotech.com/picoscope-2202.html ])([http://www.interwld.com/pico/pico-3000.htm ])([http://www.pc-oscilloscopes.com/3000.htm])
* $200 Hantek DSO-2090 USB PC Oscilloscope [http://www.beigly.com/catalog/hantek-dso2090-oscilloscope-p-96.html]
* $380.00 DSO2250 100MHz PC-SCOPE 250MS/s [http://world-educational-services.net/cart/index.php?main_page=product_info&cPath=56&products_id=134&zenid=68c155f8ccc626c8d316e8417b32dc5d]
* CAN 219.99 Syscomp Electronic Design DSO-101 [http://syscompdesign.com/] (Syscomp supports the "[https://sourceforge.net/projects/oip The Open Instrumentation Project]" [http://syscompdesign.com/oip.htm])
* EUR 427 ETC s.r.o. M520 Oscilloscope [http://etcsk.com/]
* $222 ANT8 : 8 Channel Logic Analyzer (EasySync)[http://easysync-ltd.com/]
* $200 PS40M10 : Swordfish Hand-Held Instrument (1 channel) USB (EasySync)
* $220 DS1M12 : Stingray Multi-Function Instrument (2 channel) USB (EasySync)
* under $600 : [[Jameco]] has some actual stand-alone oscilloscopes for under $600. So does www.tequipment.com - see Rigol 'scopes from China - good quality - also on eBay.
* under $200 : Carl's Electronics has some stand-alone and PC-hosted (parallel port?) oscilloscopes for under $200.[http://www.electronickits.com/gold/gold.htm]
* $170 HobbyLab USB oscilloscope [http://hobbylab.us/USBOscilloscope/Home.htm]
* $500 DS1022C : 2 Channel, 25 MHz Rigol Technologies Inc.[http://rigolna.com/]
* $999 CS320A Cleverscope [http://cleverscope.com/] (has a discussion forum[http://cleverscope.com/forum/])
* $167 DrDAQ "data logger" (parallel port) from Pico Technology [http://www.drdaq.com/]
* $970 NI USB-5132 : USB digitizer from National Instruments [http://sine.ni.com/nips/cds/view/p/lang/en/nid/203719]
* $139 Parallax USB Oscilloscope 2 analog inputs + trigger; 1 MS/s [http://parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/txtSearch/28014/List/1/ProductID/46/Default.aspx?SortField=ProductName%2cProductName]
* $170 PC USB Oscilloscope DiSco (HobbyLab, LLC). 2 analog inputs ( 200 KHz ) + 16 digital inputs (or 8 digital inputs + 8 digital outputs). [http://hobbylab.us/]
* $150 ST16B 10 MHz stand-alone oscilloscope, 2 analog inputs [http://www.electronickits.com/gold/gold.htm]
* $190 VEPCS100 ( PCS100 ) - PC Based Oscilloscope; 1 analog input ( 12 MHz ); optically isolated from PC [http://www.electronickits.com/gold/gold.htm]
* $950 DSO-8502 USB Oscilloscope, 2 analog inputs (250MSa/s) + external trigger; 1 digital output (trigger out); buffer: 512K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $799 DSO-8202 USB Oscilloscope, 2 analog inputs (200MSa/s) + external trigger; 1 digital output (trigger out); buffer: 128K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $108 LabJack U3 USB data acquisition and control device, 16 analog inputs ( 12 bit, 2.5 KSa/s at 12 bit resolution, 50 KSa/s at 8 bit resolution), buffer: 984 samples, 2 analog outputs, digital outputs [http://www.labjack.com/labjack_u3.php]
* $249 S2X100 USB Oscillloscope, 2 analog inputs (100Ms/s) with 8 bit resolution, buffer: 64K samples [http://www.dynoninstruments.com/products_s2x100.php?gclid=CNzyz_625pgCFQIyxwodgwSvMA]
* $495 ELAB-080 [http://www.dynoninstruments.com/products_elab080.php]
* $745 USBee AX-Plus, 2 analog inputs (Max 16 MS/s ?) and 8 digital inputs [http://www.usbee.com/ax.html]
* $90 DSO nano, 1 analog input (1 Ms/s) with 12 bit resolution; buffer: 4096 Point; waveform storage on SD card [http://www.seeedstudio.com/depot/micro-digital-storage-oscilloscopedso-nano-p-512.html]; [http://www.justblair.co.uk/seeed-studio-dso-nano-pocket-digital-storage-oscilloscope-review.html review by Justblair]

''FIXME: [http://measurementcomputing.com/cbicatalog/directory.asp?dept_id=403 Measurement Computing] has some wireless and USB analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.dataq.com/ DATAQ Instruments, Inc.] has some USB and Ethernet analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.designnotes.com/ DesignNotes.com, Inc.] has some USB and handheld LCD o'scopes from [http://www.velleman.be/ Velleman]: [http://www.vellemanusa.com/us/enu/product/list/?id=347914 Velleman oscilloscopes] -- add to the above list.''

''FIXME: [http://www.linkinstruments.com/oscilloscope.htm Link Instruments Inc.] has several USB o'scopes and "USB MSO" ("mixed signal o'scope"). Are they already listed above?''

EasySync[http://easysync-ltd.com/] is a distributor of RockyLogic's ANT8/etc products.

Test Equipment Solutions Today, Inc.[http://testsolu.com/] is a distributor of Rigol's DVM and oscilloscope products.

When you [http://search.ebay.com/search/search.dll?satitle=oscilloscope search eBay for oscilloscope], you might find some good deals.

== further reading ==

* other [[hardware tool | good equipment to buy when getting started]]

== external links ==

* [http://www.embedded.com/columns/breakpoint/160902529?printable=true "Scoping out palm-sized USB oscilloscopes"] by Jack Ganssle 2005, Embedded Systems Design. A review of 3 USB oscilloscopes -- reader comments at the end mention a few more USB o'scopes. ''(FIXME: make sure all the scopes mentioned are included on the above list)''
* Keith has made a list of [http://www.techtravels.org/amiga/amigablog/?p=167 "PC USB logic analyzers that cost under $1000."][http://www.techtravels.org/tech/logicanalyzer.html], some of which can be used as an o'scope. ''Should I use the same $1000 price cut-off for the above list? Or perhaps double or halve it?''
* Brooke Clarke has posted a list of [http://prc68.com/I/PCO.html "PC based Oscilloscopes"]
* [http://en.wikipedia.org/wiki/Oscilloscope Wikipedia: oscilloscope]
* Other discussions of [http://forums.reprap.org/read.php?13,5086 "Cheap digital storage oscilloscope"]
* [http://www.ganssle.com/microscopes.htm The Ganssle Group reviews Inexpensive USB Scopes and Logic Analyzers]
* [http://massmind.org/techref/tools.htm Massmind: Tools] lists a few sources for a variety of tools used in electronics: o'scopes, logic analyzers, meters, waveform generators, etc.
* [http://ask.slashdot.org/askslashdot/04/02/28/0041233.shtml Slashdot: "Cheap PC Oscilloscopes - Any Recommendations?"]
* [http://slashdot.org/askslashdot/01/12/07/191220.shtml Slashdot: "Building a Cheap Oscilloscope Using Your PC?"]
* [http://www.epanorama.net/links/measuring.html#pcmeasuring ePanorama.net: "Using PC as a measurement instrument"] ''(FIXME: anything we should add to the above list?)''

----
[[Category:Techniques]][[Category:Test Equipment]]

Oscilloscope

2009-10-26T20:41:16Z

Cov: /* Non-Free Software */

An '''oscilloscope''' (often abbreviated '''o'scope''' or '''scope''') displays signal voltages as a 2-D graph, usually as voltage (vertical axis) as a function of time (horizontal axis).

The ''probe'' of a o'scope is held against, or is clipped to, the metal wire carrying the signal of interest.

A '''dual-trace''' o'scope has 2 probes, so 2 different signals can be seen -- so not only the shape of the signal can be seen, but also the exact time from events on one signal to events on the other signal.

= Techniques =

Sometimes one wants to look at a 8-bit data bus -- typically one uses a "logic analyzer" to look at lots of time-aligned digital signals.
For a given number of signals to look at, oscilloscopes (which show the true analog waveform) are much more expensive than logic analyzers (which only show if a digital waveform is hi or low, above or below the logic threshold).
Many people buy both a (dual-trace) o'scope and a 16-trace logic analyzer, which together have a total cost less than one true 8-trace o'scope.

''... more techniques ...''

= Open Source Oscilloscopes =

Of course, you have to already have a working o'scope in order to build and test another o'scope, making this the same sort of chicken-and-egg problem as the [[Projects#RepRap | RepRap]] project, the [http://en.wikipedia.org/wiki/GNU_Compiler_Collection GCC project], and other projects David Cary finds interesting.

=PC Oscilloscopes=

==Open Hardware for PC Oscilloscopes==
===Bitscope===
* $550 BS100U: 2 analog inputs + 8 digital inputs, optically isolated, from BitScope Designs (MetaChip Pty. Ltd.) [http://bitscope.com/]

===MultiAnalyser===
Some people on the PIClist have been discussing designing an open-source oscilloscope.

* I think initial discussions occured on the [http://www.piclist.com/techref/postbot.asp?by=thread&id=%5BEE%5D+scope+project+anyone%3F&tgt=browse "[EE] scope project anyone?"] thread [http://www.piclist.com/techref/postbot.asp?by=time&id=piclist\2004\09\17\111014a.txt] at PIClist.
* Later discussion moved to the [http://tech.groups.yahoo.com/group/MultiAnalyser/ "MultiAnalyser" group at Yahoo]

==Closed, COTS Hardware for PC Oscilloscopes==
* For low frequencies, pretty much any sound card with a line (not microphone) input. Line inputs generally have a range around 0-1 V whereas microphone inputs only have up to about 50 mV, which just isn't enough.

==PC Oscilloscope Software==

===Free Software===

* [http://sourceforge.net/projects/xoscope/ Sourceforge: xoscope] is a digital oscilloscope for Linux that uses input from a sound card or EsounD and/or a ProbeScope/osziFOX and will soon support Bitscope hardware.

* [http://www.baudline.com/source_code.html Baudline GPL version] is a signal analyzer designed for scientific visualization, using input from recorded data files or from a sound card. For Linux / Solaris. The source code is expensive and it is intended for qualified corporate or institutional buyers.

===Non-Free Software===
* [http://www.baudline.com/what_is_baudline.html Baudline gratis download] (dual licensed, see Free Software entry).
* [http://www.zelscope.com/ Zelscope] Converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter. Windows trialware.
* [http://www.bitscope.com/software/dso/ BitScope DSO] is a digital oscilloscope logic analyzer for Linux and Windows. It works with BitScope hardware and is distributed as freeware.
* [http://www.zeitnitz.de/Christian/scope_en Zeitnitz Souncard Scope] and function generator. For Windows.

==Non-PC Oscilloscope Projects==
* [http://www.circuitcellar.com/archives/viewable/Zhang205/index.html "Handheld Multifunction Scope"] by Jingxi Zhang & Yang Zhang, 2007. "dual-channel oscilloscope supports 250 ksps for each channel". ... also: ohmmeter, capacitance meter, and inductance meter ... pulse generator ... small speaker and OLED output. All functions work stand-alone with OLED display, but it can also be to a host PC with the USB port to display waveforms on the PC display.
* [http://www.dansworkshop.com/electricity-and-electronics/homebuilt-oscilloscope.htm Dan's Workshop: Notes on converting that old compact tv set or computer monitor into an oscilloscope.]
* [http://www.intio.or.jp/jf10zl/tvosc.htm "TV Oscilloscope Adaptor"] "This ... adapter ... changes a TV to a Oscilloscope."

==Uncategorized==
* K3PTO http://www.qsl.net/k3pto/ 8 bit
* [http://massmind.org/techref/scenix/sxoscope/index.htm Massmind: "SX based O’Scope"] by Alberto Geraci of BTX Sistemas
* [http://www.semifluid.com/?p=9 "PIC12F675 Oscilloscope"]
* [http://zedomax.com/blog/2006/12/28/diy-hack-make-your-own-oscilloscope/ "DIY HACK - Make your own Oscilloscope"]
* [http://www.geocities.com/SiliconValley/Lakes/7156/articl3.htm "Solid State Oscilloscope"] by George Katz 1987 -- an extremely simple and small circuit that drives a 10 x 10 LED array. (Would it make sense to adapt the [[PointLess LED Array]] to be more like this?)

Epanorama has many links related to o'scopes and o'scope accessories [http://www.epanorama.net/links/measuring.html#oscilloscope].

==Oscilloscope Design Discussions==
*[http://www.edaboard.com/ftopic41841-30.html Digital oscilloscope Project] edaboard.com

== some low-cost oscilloscopes ==

some low-cost oscilloscopes, in no particular order.
''... it would be nice to mention # of analog input channels, # of digital input channels, whether it can be used under Linux, does it have output channels ... price should (?) include 2 analog probes, ... is it open hardware? ... anything else?''

* price name comments
* $349.95 VT DSO-2815H,1x150MHz or 2x75MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $299.95 VT DSO-2810H,1x100MHz or 2x50MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $250 VT DSO-2810F,2x100MHz, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
*$150 Poscope basic 2 from PoLabs [http://poscope.com/ PoLabs], 2 analog channels, 16/8 digital channels, PC USB oscilloscope, spectrum analyzer, chart recorder, pattern generator, logic analyzer, PWM/ square generator
* $420 PicoScope 2202 from [http://picotech.com/ Pico Technology]([http://www.picotech.com/picoscope-2202.html ])([http://www.interwld.com/pico/pico-3000.htm ])([http://www.pc-oscilloscopes.com/3000.htm])
* $200 Hantek DSO-2090 USB PC Oscilloscope [http://www.beigly.com/catalog/hantek-dso2090-oscilloscope-p-96.html]
* $380.00 DSO2250 100MHz PC-SCOPE 250MS/s [http://world-educational-services.net/cart/index.php?main_page=product_info&cPath=56&products_id=134&zenid=68c155f8ccc626c8d316e8417b32dc5d]
* CAN 219.99 Syscomp Electronic Design DSO-101 [http://syscompdesign.com/] (Syscomp supports the "[https://sourceforge.net/projects/oip The Open Instrumentation Project]" [http://syscompdesign.com/oip.htm])
* EUR 427 ETC s.r.o. M520 Oscilloscope [http://etcsk.com/]
* $222 ANT8 : 8 Channel Logic Analyzer (EasySync)[http://easysync-ltd.com/]
* $200 PS40M10 : Swordfish Hand-Held Instrument (1 channel) USB (EasySync)
* $220 DS1M12 : Stingray Multi-Function Instrument (2 channel) USB (EasySync)
* under $600 : [[Jameco]] has some actual stand-alone oscilloscopes for under $600. So does www.tequipment.com - see Rigol 'scopes from China - good quality - also on eBay.
* under $200 : Carl's Electronics has some stand-alone and PC-hosted (parallel port?) oscilloscopes for under $200.[http://www.electronickits.com/gold/gold.htm]
* $170 HobbyLab USB oscilloscope [http://hobbylab.us/USBOscilloscope/Home.htm]
* $500 DS1022C : 2 Channel, 25 MHz Rigol Technologies Inc.[http://rigolna.com/]
* $999 CS320A Cleverscope [http://cleverscope.com/] (has a discussion forum[http://cleverscope.com/forum/])
* $167 DrDAQ "data logger" (parallel port) from Pico Technology [http://www.drdaq.com/]
* $970 NI USB-5132 : USB digitizer from National Instruments [http://sine.ni.com/nips/cds/view/p/lang/en/nid/203719]
* $139 Parallax USB Oscilloscope 2 analog inputs + trigger; 1 MS/s [http://parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/txtSearch/28014/List/1/ProductID/46/Default.aspx?SortField=ProductName%2cProductName]
* $170 PC USB Oscilloscope DiSco (HobbyLab, LLC). 2 analog inputs ( 200 KHz ) + 16 digital inputs (or 8 digital inputs + 8 digital outputs). [http://hobbylab.us/]
* $150 ST16B 10 MHz stand-alone oscilloscope, 2 analog inputs [http://www.electronickits.com/gold/gold.htm]
* $190 VEPCS100 ( PCS100 ) - PC Based Oscilloscope; 1 analog input ( 12 MHz ); optically isolated from PC [http://www.electronickits.com/gold/gold.htm]
* $950 DSO-8502 USB Oscilloscope, 2 analog inputs (250MSa/s) + external trigger; 1 digital output (trigger out); buffer: 512K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $799 DSO-8202 USB Oscilloscope, 2 analog inputs (200MSa/s) + external trigger; 1 digital output (trigger out); buffer: 128K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $108 LabJack U3 USB data acquisition and control device, 16 analog inputs ( 12 bit, 2.5 KSa/s at 12 bit resolution, 50 KSa/s at 8 bit resolution), buffer: 984 samples, 2 analog outputs, digital outputs [http://www.labjack.com/labjack_u3.php]
* $249 S2X100 USB Oscillloscope, 2 analog inputs (100Ms/s) with 8 bit resolution, buffer: 64K samples [http://www.dynoninstruments.com/products_s2x100.php?gclid=CNzyz_625pgCFQIyxwodgwSvMA]
* $495 ELAB-080 [http://www.dynoninstruments.com/products_elab080.php]
* $745 USBee AX-Plus, 2 analog inputs (Max 16 MS/s ?) and 8 digital inputs [http://www.usbee.com/ax.html]

''FIXME: [http://measurementcomputing.com/cbicatalog/directory.asp?dept_id=403 Measurement Computing] has some wireless and USB analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.dataq.com/ DATAQ Instruments, Inc.] has some USB and Ethernet analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.designnotes.com/ DesignNotes.com, Inc.] has some USB and handheld LCD o'scopes from [http://www.velleman.be/ Velleman]: [http://www.vellemanusa.com/us/enu/product/list/?id=347914 Velleman oscilloscopes] -- add to the above list.''

''FIXME: [http://www.linkinstruments.com/oscilloscope.htm Link Instruments Inc.] has several USB o'scopes and "USB MSO" ("mixed signal o'scope"). Are they already listed above?''

EasySync[http://easysync-ltd.com/] is a distributor of RockyLogic's ANT8/etc products.

Test Equipment Solutions Today, Inc.[http://testsolu.com/] is a distributor of Rigol's DVM and oscilloscope products.

When you [http://search.ebay.com/search/search.dll?satitle=oscilloscope search eBay for oscilloscope], you might find some good deals.

== further reading ==

* other [[hardware tool | good equipment to buy when getting started]]

== external links ==

* [http://www.embedded.com/columns/breakpoint/160902529?printable=true "Scoping out palm-sized USB oscilloscopes"] by Jack Ganssle 2005, Embedded Systems Design. A review of 3 USB oscilloscopes -- reader comments at the end mention a few more USB o'scopes. ''(FIXME: make sure all the scopes mentioned are included on the above list)''
* Keith has made a list of [http://www.techtravels.org/amiga/amigablog/?p=167 "PC USB logic analyzers that cost under $1000."][http://www.techtravels.org/tech/logicanalyzer.html], some of which can be used as an o'scope. ''Should I use the same $1000 price cut-off for the above list? Or perhaps double or halve it?''
* Brooke Clarke has posted a list of [http://prc68.com/I/PCO.html "PC based Oscilloscopes"]
* [http://en.wikipedia.org/wiki/Oscilloscope Wikipedia: oscilloscope]
* Other discussions of [http://forums.reprap.org/read.php?13,5086 "Cheap digital storage oscilloscope"]
* [http://www.ganssle.com/microscopes.htm The Ganssle Group reviews Inexpensive USB Scopes and Logic Analyzers]
* [http://massmind.org/techref/tools.htm Massmind: Tools] lists a few sources for a variety of tools used in electronics: o'scopes, logic analyzers, meters, waveform generators, etc.
* [http://ask.slashdot.org/askslashdot/04/02/28/0041233.shtml Slashdot: "Cheap PC Oscilloscopes - Any Recommendations?"]
* [http://slashdot.org/askslashdot/01/12/07/191220.shtml Slashdot: "Building a Cheap Oscilloscope Using Your PC?"]
* [http://www.epanorama.net/links/measuring.html#pcmeasuring ePanorama.net: "Using PC as a measurement instrument"] ''(FIXME: anything we should add to the above list?)''

----
[[Category:Techniques]][[Category:Test Equipment]]

Oscilloscope

2009-10-26T20:39:05Z

Cov: /* Free Software */

An '''oscilloscope''' (often abbreviated '''o'scope''' or '''scope''') displays signal voltages as a 2-D graph, usually as voltage (vertical axis) as a function of time (horizontal axis).

The ''probe'' of a o'scope is held against, or is clipped to, the metal wire carrying the signal of interest.

A '''dual-trace''' o'scope has 2 probes, so 2 different signals can be seen -- so not only the shape of the signal can be seen, but also the exact time from events on one signal to events on the other signal.

= Techniques =

Sometimes one wants to look at a 8-bit data bus -- typically one uses a "logic analyzer" to look at lots of time-aligned digital signals.
For a given number of signals to look at, oscilloscopes (which show the true analog waveform) are much more expensive than logic analyzers (which only show if a digital waveform is hi or low, above or below the logic threshold).
Many people buy both a (dual-trace) o'scope and a 16-trace logic analyzer, which together have a total cost less than one true 8-trace o'scope.

''... more techniques ...''

= Open Source Oscilloscopes =

Of course, you have to already have a working o'scope in order to build and test another o'scope, making this the same sort of chicken-and-egg problem as the [[Projects#RepRap | RepRap]] project, the [http://en.wikipedia.org/wiki/GNU_Compiler_Collection GCC project], and other projects David Cary finds interesting.

=PC Oscilloscopes=

==Open Hardware for PC Oscilloscopes==
===Bitscope===
* $550 BS100U: 2 analog inputs + 8 digital inputs, optically isolated, from BitScope Designs (MetaChip Pty. Ltd.) [http://bitscope.com/]

===MultiAnalyser===
Some people on the PIClist have been discussing designing an open-source oscilloscope.

* I think initial discussions occured on the [http://www.piclist.com/techref/postbot.asp?by=thread&id=%5BEE%5D+scope+project+anyone%3F&tgt=browse "[EE] scope project anyone?"] thread [http://www.piclist.com/techref/postbot.asp?by=time&id=piclist\2004\09\17\111014a.txt] at PIClist.
* Later discussion moved to the [http://tech.groups.yahoo.com/group/MultiAnalyser/ "MultiAnalyser" group at Yahoo]

==Closed, COTS Hardware for PC Oscilloscopes==
* For low frequencies, pretty much any sound card with a line (not microphone) input. Line inputs generally have a range around 0-1 V whereas microphone inputs only have up to about 50 mV, which just isn't enough.

==PC Oscilloscope Software==

===Free Software===

* [http://sourceforge.net/projects/xoscope/ Sourceforge: xoscope] is a digital oscilloscope for Linux that uses input from a sound card or EsounD and/or a ProbeScope/osziFOX and will soon support Bitscope hardware.

* [http://www.baudline.com/source_code.html Baudline GPL version] is a signal analyzer designed for scientific visualization, using input from recorded data files or from a sound card. For Linux / Solaris. The source code is expensive and it is intended for qualified corporate or institutional buyers.

===Non-Free Software===
* [http://www.baudline.com/what_is_baudline.html Baudline gratis download] (dual licensed, see Free Software entry).
* [http://www.zelscope.com/ Zelscope] Converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter. Windows trialware.
* [http://www.bitscope.com/software/dso/ BitScope DSO] is a digital oscilloscope logic analyzer for Linux and Windows. It works with BitScope hardware and is distributed as freeware.

==Non-PC Oscilloscope Projects==
* [http://www.circuitcellar.com/archives/viewable/Zhang205/index.html "Handheld Multifunction Scope"] by Jingxi Zhang & Yang Zhang, 2007. "dual-channel oscilloscope supports 250 ksps for each channel". ... also: ohmmeter, capacitance meter, and inductance meter ... pulse generator ... small speaker and OLED output. All functions work stand-alone with OLED display, but it can also be to a host PC with the USB port to display waveforms on the PC display.
* [http://www.dansworkshop.com/electricity-and-electronics/homebuilt-oscilloscope.htm Dan's Workshop: Notes on converting that old compact tv set or computer monitor into an oscilloscope.]
* [http://www.intio.or.jp/jf10zl/tvosc.htm "TV Oscilloscope Adaptor"] "This ... adapter ... changes a TV to a Oscilloscope."

==Uncategorized==
* K3PTO http://www.qsl.net/k3pto/ 8 bit
* [http://massmind.org/techref/scenix/sxoscope/index.htm Massmind: "SX based O’Scope"] by Alberto Geraci of BTX Sistemas
* [http://www.semifluid.com/?p=9 "PIC12F675 Oscilloscope"]
* [http://zedomax.com/blog/2006/12/28/diy-hack-make-your-own-oscilloscope/ "DIY HACK - Make your own Oscilloscope"]
* [http://www.geocities.com/SiliconValley/Lakes/7156/articl3.htm "Solid State Oscilloscope"] by George Katz 1987 -- an extremely simple and small circuit that drives a 10 x 10 LED array. (Would it make sense to adapt the [[PointLess LED Array]] to be more like this?)

Epanorama has many links related to o'scopes and o'scope accessories [http://www.epanorama.net/links/measuring.html#oscilloscope].

==Oscilloscope Design Discussions==
*[http://www.edaboard.com/ftopic41841-30.html Digital oscilloscope Project] edaboard.com

== some low-cost oscilloscopes ==

some low-cost oscilloscopes, in no particular order.
''... it would be nice to mention # of analog input channels, # of digital input channels, whether it can be used under Linux, does it have output channels ... price should (?) include 2 analog probes, ... is it open hardware? ... anything else?''

* price name comments
* $349.95 VT DSO-2815H,1x150MHz or 2x75MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $299.95 VT DSO-2810H,1x100MHz or 2x50MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $250 VT DSO-2810F,2x100MHz, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
*$150 Poscope basic 2 from PoLabs [http://poscope.com/ PoLabs], 2 analog channels, 16/8 digital channels, PC USB oscilloscope, spectrum analyzer, chart recorder, pattern generator, logic analyzer, PWM/ square generator
* $420 PicoScope 2202 from [http://picotech.com/ Pico Technology]([http://www.picotech.com/picoscope-2202.html ])([http://www.interwld.com/pico/pico-3000.htm ])([http://www.pc-oscilloscopes.com/3000.htm])
* $200 Hantek DSO-2090 USB PC Oscilloscope [http://www.beigly.com/catalog/hantek-dso2090-oscilloscope-p-96.html]
* $380.00 DSO2250 100MHz PC-SCOPE 250MS/s [http://world-educational-services.net/cart/index.php?main_page=product_info&cPath=56&products_id=134&zenid=68c155f8ccc626c8d316e8417b32dc5d]
* CAN 219.99 Syscomp Electronic Design DSO-101 [http://syscompdesign.com/] (Syscomp supports the "[https://sourceforge.net/projects/oip The Open Instrumentation Project]" [http://syscompdesign.com/oip.htm])
* EUR 427 ETC s.r.o. M520 Oscilloscope [http://etcsk.com/]
* $222 ANT8 : 8 Channel Logic Analyzer (EasySync)[http://easysync-ltd.com/]
* $200 PS40M10 : Swordfish Hand-Held Instrument (1 channel) USB (EasySync)
* $220 DS1M12 : Stingray Multi-Function Instrument (2 channel) USB (EasySync)
* under $600 : [[Jameco]] has some actual stand-alone oscilloscopes for under $600. So does www.tequipment.com - see Rigol 'scopes from China - good quality - also on eBay.
* under $200 : Carl's Electronics has some stand-alone and PC-hosted (parallel port?) oscilloscopes for under $200.[http://www.electronickits.com/gold/gold.htm]
* $170 HobbyLab USB oscilloscope [http://hobbylab.us/USBOscilloscope/Home.htm]
* $500 DS1022C : 2 Channel, 25 MHz Rigol Technologies Inc.[http://rigolna.com/]
* $999 CS320A Cleverscope [http://cleverscope.com/] (has a discussion forum[http://cleverscope.com/forum/])
* $167 DrDAQ "data logger" (parallel port) from Pico Technology [http://www.drdaq.com/]
* $970 NI USB-5132 : USB digitizer from National Instruments [http://sine.ni.com/nips/cds/view/p/lang/en/nid/203719]
* $139 Parallax USB Oscilloscope 2 analog inputs + trigger; 1 MS/s [http://parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/txtSearch/28014/List/1/ProductID/46/Default.aspx?SortField=ProductName%2cProductName]
* $170 PC USB Oscilloscope DiSco (HobbyLab, LLC). 2 analog inputs ( 200 KHz ) + 16 digital inputs (or 8 digital inputs + 8 digital outputs). [http://hobbylab.us/]
* $150 ST16B 10 MHz stand-alone oscilloscope, 2 analog inputs [http://www.electronickits.com/gold/gold.htm]
* $190 VEPCS100 ( PCS100 ) - PC Based Oscilloscope; 1 analog input ( 12 MHz ); optically isolated from PC [http://www.electronickits.com/gold/gold.htm]
* $950 DSO-8502 USB Oscilloscope, 2 analog inputs (250MSa/s) + external trigger; 1 digital output (trigger out); buffer: 512K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $799 DSO-8202 USB Oscilloscope, 2 analog inputs (200MSa/s) + external trigger; 1 digital output (trigger out); buffer: 128K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $108 LabJack U3 USB data acquisition and control device, 16 analog inputs ( 12 bit, 2.5 KSa/s at 12 bit resolution, 50 KSa/s at 8 bit resolution), buffer: 984 samples, 2 analog outputs, digital outputs [http://www.labjack.com/labjack_u3.php]
* $249 S2X100 USB Oscillloscope, 2 analog inputs (100Ms/s) with 8 bit resolution, buffer: 64K samples [http://www.dynoninstruments.com/products_s2x100.php?gclid=CNzyz_625pgCFQIyxwodgwSvMA]
* $495 ELAB-080 [http://www.dynoninstruments.com/products_elab080.php]
* $745 USBee AX-Plus, 2 analog inputs (Max 16 MS/s ?) and 8 digital inputs [http://www.usbee.com/ax.html]

''FIXME: [http://measurementcomputing.com/cbicatalog/directory.asp?dept_id=403 Measurement Computing] has some wireless and USB analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.dataq.com/ DATAQ Instruments, Inc.] has some USB and Ethernet analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.designnotes.com/ DesignNotes.com, Inc.] has some USB and handheld LCD o'scopes from [http://www.velleman.be/ Velleman]: [http://www.vellemanusa.com/us/enu/product/list/?id=347914 Velleman oscilloscopes] -- add to the above list.''

''FIXME: [http://www.linkinstruments.com/oscilloscope.htm Link Instruments Inc.] has several USB o'scopes and "USB MSO" ("mixed signal o'scope"). Are they already listed above?''

EasySync[http://easysync-ltd.com/] is a distributor of RockyLogic's ANT8/etc products.

Test Equipment Solutions Today, Inc.[http://testsolu.com/] is a distributor of Rigol's DVM and oscilloscope products.

When you [http://search.ebay.com/search/search.dll?satitle=oscilloscope search eBay for oscilloscope], you might find some good deals.

== further reading ==

* other [[hardware tool | good equipment to buy when getting started]]

== external links ==

* [http://www.embedded.com/columns/breakpoint/160902529?printable=true "Scoping out palm-sized USB oscilloscopes"] by Jack Ganssle 2005, Embedded Systems Design. A review of 3 USB oscilloscopes -- reader comments at the end mention a few more USB o'scopes. ''(FIXME: make sure all the scopes mentioned are included on the above list)''
* Keith has made a list of [http://www.techtravels.org/amiga/amigablog/?p=167 "PC USB logic analyzers that cost under $1000."][http://www.techtravels.org/tech/logicanalyzer.html], some of which can be used as an o'scope. ''Should I use the same $1000 price cut-off for the above list? Or perhaps double or halve it?''
* Brooke Clarke has posted a list of [http://prc68.com/I/PCO.html "PC based Oscilloscopes"]
* [http://en.wikipedia.org/wiki/Oscilloscope Wikipedia: oscilloscope]
* Other discussions of [http://forums.reprap.org/read.php?13,5086 "Cheap digital storage oscilloscope"]
* [http://www.ganssle.com/microscopes.htm The Ganssle Group reviews Inexpensive USB Scopes and Logic Analyzers]
* [http://massmind.org/techref/tools.htm Massmind: Tools] lists a few sources for a variety of tools used in electronics: o'scopes, logic analyzers, meters, waveform generators, etc.
* [http://ask.slashdot.org/askslashdot/04/02/28/0041233.shtml Slashdot: "Cheap PC Oscilloscopes - Any Recommendations?"]
* [http://slashdot.org/askslashdot/01/12/07/191220.shtml Slashdot: "Building a Cheap Oscilloscope Using Your PC?"]
* [http://www.epanorama.net/links/measuring.html#pcmeasuring ePanorama.net: "Using PC as a measurement instrument"] ''(FIXME: anything we should add to the above list?)''

----
[[Category:Techniques]][[Category:Test Equipment]]

User talk:DavidCary

2009-10-26T20:36:49Z

Cov: /* Baudline Free Software */

== from russ_hensel Jan 21 09 ==

I have been thinking about how to get more traffic at open circuits. So far:

*Post links to it on forums, these are usually on topic for the forum, not just ads.
*Started a sub wiki for SourceBoost C ( much of which is just a collection of stuff I was doing here anyway ) If this seems to commercial, let me know and we can see if there is a better way to do it. I think it fits the site well however.
*When I link to sites now I often send an email letting them know and inviting them to contribute, not too much has come of this yet, but more time will tell.

*Should we consider adding the site to some web rings? If we think this is a good idea what process should we use to discuss and keep the process under control.

Russ

== from joshua w. ==
The pceeg project has become a alpha release now. I now have eagle cad files schematics and boards for all three boards.
I have the pcb from sparkfun in my hand.
I will be ordering parts for the microcontroler printed circuit board this weekend to test it out.
Take a look at it it has changed a lot.
I look forward to your comments I would like help on this project.

== from russ hensel ==

I am making a page just for the spam topic [[How Should We Deal With Spam]] and will move all the discussion here to their if you do not object. Then will link in a few other places as well. Ok.

''That sounds great. I've just finished moving all the spam-related discussion on this "User talk:DavidCary" page to the [[spam]] page, but I'm sure there are other similar discussions scattered all over the place. I hope we will be able to reap the advantages of [http://www.communitywiki.org/ConsolidateInformation consolidate information]. --[[User:DavidCary|DavidCary]] 12:33, 9 April 2008 (PDT)''

== question about russ_hensel_test ==

from my talk page:

russ_hensel_test as with a few other pages that should be linked to only from my personal page were indeed tests, some should have already
been deleted. At the time I had no idea how to move them. I will try to leave less trash behind.

Russ

No worries.
It's easy enough to fix.

I just wanted to check in and see what the scoop was before plunging in and deleting a page that *looks* redundant, but perhaps is merely in the middle of some complex transformation.
--[[User:DavidCary|DavidCary]] 21:29, 14 February 2008 (PST)

== Take a look at..... ==
[[russ_hensel_test]]

take a look at a page I am working on for PIC projects ( all external )
It clearly has a ways to go, but then I am planning to link it in somewhere public.

The page is supposed to have a fairly clean look for browsing, and some structure for searching.

I am still struggling with getting the formatting down right.
Is there a test for what is open that we should be applying?

Let me know your thoughts.

russ_hensel

: Looking good. Thank you. The "Editing help" link (just below the "Summary" bar that shows up after you start editing a page) *ought* to have tips on formatting. Maybe next month :-).
: I made a few minor tweaks that I *thought* made it look better -- hit that "undo" button if I've only messed things up.
: For [[open hardware]], I'm using the consensus definition at [http://en.wikipedia.org/wiki/open_source_hardware Wikipedia:open source hardware]. If they've posted the schematics and firmware online, and indicated that anyone can use the design information -- perhaps released under GPL, Creative Commons, or public domain -- then it's open hardware.

== Armus board ==
Hi!
Very glad at least one guy did show some enthousiasm about the project!
Currently, as the project was left (and will probably stay....):
Hardware is all good. The board with gerbers can be sent to most major Fab House and you will receive a functionnal design. Proto1 was tested and around 5 glitches have been found and corrected for Proto2, wich was never tested but should be 100% functionnal.

The Firmware of the 4 DSPics is symetrical, and is "complete". It interface to Servos and DCs. The input encoder, if I recall, is not done, but the code is there and all C, so it should be easy to just copy-paste a snippet from somewhere else into the project.
The Firmware for the multi-IO PIC18 is complete, and you will be able to play with all IO.
The Drivers to communicate to the PIC and DSPIC from the kernel is done and documented.
Ah, yeah, we have drivers for Ethernet/CAN/Sound.
We also have a complete compiled kernel ready to load onto the board with various "demonstration" mode.

Most of the work left is polishing here and there, as the firmware/driver part was done is haste. Most of the things work 100%, and will need no touch, but some functions (like the Quadrature encoders) are plain missing.

The part where more work is to be done is on the Integrated Devellopment Environment (IDE). Shure, you can use KDevellopp, Eclipse, or any cross compiler out there. You could even download some dev.boards' software and load it onto ARMUS and compile natively from there. We had in mind (read the article) to creat a simple and easy IDE for 1st year undergrads, so maybe it's not necessary for you :P

If you want the =WHOLE= project CVS for you to enjoy, I have it and could send it to you trough FTP or any other way you prefer. I guess I could also just mail a DVD. It weights around 700MB, and there is ton of french comment and files (as the team, in Quebec, was native french) but I could translate any part you feel is critical for specific applications.

If you want to work on this "on your own", most of the board is based on atmel's AT91RM9200EK and AT91RM9200DK . Their demonstration Kernels should run as-is with the same procedure as Atmel's.

Just to say: what do you plan to use the board for?
Thanks for your interest!
-Jerome Marchand

'''Wow.'''
This is too cool to stick on a shelf a let it gather dust.
I want to see projects like this "ratchet forward".
I want to allow people to build off last year's work rather than starting all over again from scratch -- so in a few years we can finish amazingly cool projects that are far too complicated for one team to finish in a year.

I think this [[ARMUS Embedded Linux Board]] might be perfect for a CNC machine.
The LinuxCNC software runs on Linux, so it ought to run on this Linux board.
And the DSPics should be able to drive the power transistors that run the motors on the CNC machine, and track the position of the routing head.

And not just a single CNC machine -- a series of open-source CNC machine designs. Designs that anyone can build, improve, and then share those improvements with the next builder.

Yes, please do send me the project files.
These are all "public domain" or "[http://creativecommons.org/ creative commons]" or "open source", with no warranty, right?

Do you think that perhaps http://SourceForge.net/ or [http://en.wikipedia.org/wiki/GNU_Savannah GNU Savannah] might be a more appropriate place to host this software than Opencircuits?

Alas, I am embarrassed to admit that I barely speak 5 words of the lingua franca, the French language.

--[[User:DavidCary|DavidCary]] 19:16, 3 November 2007 (PDT)

== Programmable Chip EEG ==
Why don't you help finish my programmable chip eeg project and then use what you learned and the results to then create your own project. Programmers like to reuse working modulas instead of reinventing the wheel.

The pceeg has gone through a major revision streamlining its design and I am working on the father board a digital computing board for the project. I will be cleaning up the page.

''Thank you. I hope the [[Programmable Chip EEG]] project becomes wildly successful. --[[User:DavidCary|DavidCary]] 10:01, 19 July 2007 (PDT)''

I am getting to be in the alpha release check it all out at the sourceforge page and the open circuits wiki.

==a talk through Wiki Howto==
Hi DavidCary
 Thank you very much you create this wiki to let us to share electronic projects.
 I want to merge the "[[RS232 Dev Board]]" and "[[RS232 RS485 USB Converter Board]]", so want to discuss to the author, Tkb, of "RS232 Dev Board". However, i cannot find out the talk page like i talk to you by this way. Can you point me how to do it?
 thanks
 [[User:Yan|yan]]

''If you have a question or comment specifically about the "RS232 Dev Board", please leave a comment on the [[RS232 Dev Board]] page or its "discussion" page.''
''You can click on "[[User talk:Tkb]]" to leave a note on Tkb's user talk page.''
''Since there are more people watching the "RS232 Dev Board" page than Tkb's page, you'll probably get a quicker response if you post to the "RS232 Dev Board" page than to Tkb's page.''
''--[[User:DavidCary|DavidCary]] 20:00, 29 December 2006 (PST)''

[[User:Chazegh|Chazegh]] created this "Open Circuits wiki".
I am flattered that you think I had something to do with it.
But since Chazegh seems to be too busy to spend much time here,
it's up to you and I (and whoever else we can recruit) to create content here.
--[[User:DavidCary|DavidCary]] 21:08, 29 December 2006 (PST)

5.7.2007 Joe Silva:
Hi David, great site!
...

----

Aloha David,
Roger here, I'm still puzzeled as to how to create a new article. I uploaded an image file for the 723 regulator (my article subject). This went into an "Image File page" automatically, OK. I added it to the Voltage Regulators section of Components/Integrated Circuits, OK. But I couldn't figure out how to make a document like there is for LT1528 OO. I put the info I have into the discussion page for the image, but that is only a temporary solution.

How does one create a new article page that isn't a "talk" page for something else? Beside the info on the IC, I have a couple of documents that are in-depth on using the device. These should be near each other as well as near the info document above. How would I go about setting up a "723" sub-chapter of "Integrated Circuits"? I guess that's as clear as I can make the question.

I would also like to suggest a modification to the linkage. I'm reading the synopsis on the LT1528, I want to find oout more, so I click on the image, but instead of taking me to an in-depth article, it takes me to the image file page. There I have to look at the Links to find the article (which is only identified as LT1528). I'd like to be taken to the article instead of the image. Take me to the image only if there is no article. Of course this may be more difficult to make happen--I don't know how the site is structured. My web programming is very basic. Still, I think this makes sense from a user's POV.

Thanks in Advance,
[[User:RogerAF|RAF]] 17:26, 22 May 2007 (PDT)

Aloha, Roger.
You're doing great.

I agree that it would be nice if clicking on the picture of the LT1528 took you directly to the article about the LT1528.
I don't know how to fix it.

Do you see the "Help" link in the navigation bar on the left side of every page?
I think the page it brings up needs a few more tips.
But I want to keep it short and simple.
If I explained every detail, it would become a bloated 100-page document that nobody would read.

There are already far too many bloated 100-page documents about electronics.

I hope that you, dear reader, and other volunteers will make Open Circuits into a place where people can learn to do amazing things.
A place that avoids forcing people to learn 100 irrelevant details before learning the one thing they need to know before they get back to building their robot (or whatever).
A place that never makes people throw away good ideas, because we never confuse people into believing that it would be far more complicated and expensive to build than it really is.

p.s.:
Picking the name of a page is a bit of an art.
Since we want to refer to a page a lot, that's easier when the name is very short.
People new to wiki always pick names that are too long, or have too many capital letters.
Fortunately, it's very simple to rename pages.
You rename pages by clicking on the incorrectly-named "Move this page" button.
(I don't know how to fix that, either).
--[[User:DavidCary|DavidCary]] 10:15, 23 May 2007 (PDT)

=== making links ===

Speaking of linkage, making links is one of the most important parts of this wiki.

Whenever you find one article mentioning some other article, you can click on that word to get more detail.

If that word is not already clickable (underlined and colored), please make it clickable.
To make a word clickable, hit the "edit" button at the top of the page.
Then add double brackets <nowiki>"[["</nowiki> and <nowiki>"]]"</nowiki> around that word.
(Some people recommend only making the first mention of that word clickable).

The cheatsheet ( http://en.wikipedia.org/wiki/Wikipedia:Cheatsheet ) calls this an "internal link".

Here's the trick: you can add those brackets to any word, making it into a link.
Some of those links will go to pages that don't exist yet.

What happens when you click on one of those links to a page that doesn't exist yet?

I'm not going to tell you what happens.
Go find out for yourself.
You can practice in the [[meta:Sandbox]].

--[[User:DavidCary|DavidCary]] 10:15, 23 May 2007 (PDT)

----
Aloha David,
Roger again; I want to thank you for the info and hints. I'm catching on. I got my component description linked to the caption under the image on the Components/Voltage Regulators page. And I created a "New Article" which I then "moved" to the title of my article. And my article has a link to the description and that has a link to the article, so I'm getting the hang of it. I have several schematics and PC artwork images to upload and link to my article, plus a second article I want to publish (I didn't write it, but I've been unable to find it on the internet--I have a xeroxed copy from 1986 or so and that is the only existing one as far as I know). That article also has several images that go along with it. I wondered about the feasability of uploading a .pdf file (I made one of it) to this site. Would that work? Should I even try? I don't want to screw anything up, but wouldn't that be a lovely thing if we could upload .pdf files? Just a thought.

Again, Thanks very much, I've made some progress.

[[User:RogerAF|RAF]] 19:48, 23 May 2007 (PDT)

Aloha, Roger.
You are welcome.
Have you tried creating a link to an article that doesn't exist yet, just to see what happens when you click on that link? For example, the [[switching regulator]] page that I'm going to start in a few days.

I don't know about this article that you didn't write.
If the original author wants people to post it widely, and doesn't mind us editing it, then great, let's post it (and give correct attribution).
But some writers go a little crazy when they see that someone random stranger has copied their stuff and posted it to the internet.
(That's why there's that "DO NOT SUBMIT COPYRIGHTED WORK WITHOUT PERMISSION!" note at the bottom of each Edit page).

I wouldn't mind you posting a .pdf file (that you wrote) temporarily.
It's better than nothing.
But I would expect someone to eventually convert it to text-and-images.
That makes it much easier for the next person to improve the it.

Thank you again for adding useful information to Open Circuits.
I hope you won't mind people "improving" the things you post here.

--[[User:DavidCary|DavidCary]] 21:26, 23 May 2007 (PDT)

Aloha David,
Sorry for the delay, I had a loonng job and then our cable modem failed. At least they swapped us a new one free (hooray RoadRunner). But I want to explain the article: "The Many-Talented 723" by Glenn Prescott. I came across this as a xerox copy sometime around 1985. It was evidently published in a magazine for radio enthusiasts--there are some ads on the last page for radio gear. But the name of the magazine isn't on any of the pages. I Googled for the article and got no returns. I think it is a very good article as far as describing the IC and how to use it. It helped me when I was a beginner, so I want to share it. However, I don't want anyone to get into trouble over it. I just did another search on Google and all the returns refer to my mention of it here on Open Circuits. Like I said, this is a copy that I have, no clue as to the magazine that published it, no copyright date, no nothin'. But I will leave it to your judgement if it is a risk. I still have my own article to get uploaded along with images. I will concentrate on getting mine done before doing anything with the copied article.

[[User:RogerAF|RAF]] 20:27, 26 May 2007 (PDT)

Unless the author has given permission to publish it, I think a better idea would be to write your own article, citing the one you're talking about further details. Ideas are not copyright, but the expression of them (i.e. the text of the article) is, or so I understand. [[User:Autarch|Autarch]] 10:22, 13 June 2007 (PDT)

== spammers ==

moved to [[spam]]

== OpenCircuits Guideline ==

Here is a rewritten guidline as per your request. It may need some polishing:

''... moved to [[We love volunteers]] ...''

[[User_talk:Freqmax]]

Start the page [[Guideline]] ..?

''I think that's great. We might want a "guideline" page someday, but for now I'm going to stick it over into "[[We love volunteers]]".'' --[[User:DavidCary|DavidCary]] 00:44, 3 August 2007 (PDT)

== Delete object ==

[http://www.opencircuits.com/index.php?title=Image:Geda_pcb_print_layout.png&action=delete&oldimage=20070731124511%21Geda_pcb_print_layout.png&wpEditToken=f5d80d0b9e925f6a32d06cabf08f986b%5C Can you delete this?] [[User:Freqmax|Freqmax]] 05:50, 31 July 2007 (PDT)

: I see that [[:Image:Geda_pcb_print_layout.png]] is currently in use on page [[GEDA Quickstart]]. Why would I want to delete an image that is currently in use? --[[User:DavidCary|DavidCary]] 13:01, 11 September 2008 (PDT)

== Spam ==

moved to [[spam]]

== Thanks ==

David, you left a comment on my dead blog way back in Jan about this and other Open Circuit wikis. Thanks!!!

I will see what I can contribute and learn here. --[[User:SamRose|SamRose]] 06:53, 9 May 2008 (PDT)

== Basic Circuits Page ==

I'd like to add some RF circuits to the Basic Circuits page. It seems to me pointful to break each entry out into it's own page. Is it alright if I do this? --[[User:Wackyvorlon|Wackyvorlon]] 15:01, 19 May 2008 (PDT)

Sure, go ahead and add RF circuits anywhere.
This is a wiki -- if we later decide to re-organize RF circuits elsewhere, that's easy enough to do.
--[[User:DavidCary|DavidCary]] 19:48, 20 May 2008 (PDT)

== Supporting More Image Type ==

Currently open circuit supports png, gif, jpg, jpeg formats. Is it possible to support svg as well? --[[User:Tcwden|Tcwden]] 04:51, 23 February 2009 (UTC)

: I see that the Mediawiki software we use can support SVG with a bit of setup. http://www.mediawiki.org/wiki/SVG . --[[User:DavidCary|DavidCary]] 05:15, 23 February 2009 (UTC)

Thank you. I think SVG is useful graphics format for our discussion because, being in vector format, it is more convenient to edit and resize if needed.--[[User:Tcwden|Tcwden]] 01:40, 25 February 2009 (UTC)

== Baudline Free Software ==

On the Open Circuits oscilloscope page, I don't understand why you took "baudline" out of the "open source" section. Anyone can buy the source code with a "GPL source code license" at http://www.baudline.com/source_code.html . You have read what our Main Page says about "Selling Free Software", right? GPL is open source, right? --DavidCary 03:16, 26 October 2009 (UTC)

Sorry, I only read the license for the free download. Come to think of it, however, "The source code is expensive and it is intended for qualified corporate or institutional buyers" seems like a big deterrent to any hobbyist getting their hands on the source any time soon. While the software is technically GPL, it seems almost pointless to list it as such. I'm probably not going to modify it more than I've done though (listed it twice).

[[User:Cov|Cov]] 20:36, 26 October 2009 (UTC)

Oscilloscope

2009-10-26T20:31:19Z

Cov: /* Non-Free Software */

An '''oscilloscope''' (often abbreviated '''o'scope''' or '''scope''') displays signal voltages as a 2-D graph, usually as voltage (vertical axis) as a function of time (horizontal axis).

The ''probe'' of a o'scope is held against, or is clipped to, the metal wire carrying the signal of interest.

A '''dual-trace''' o'scope has 2 probes, so 2 different signals can be seen -- so not only the shape of the signal can be seen, but also the exact time from events on one signal to events on the other signal.

= Techniques =

Sometimes one wants to look at a 8-bit data bus -- typically one uses a "logic analyzer" to look at lots of time-aligned digital signals.
For a given number of signals to look at, oscilloscopes (which show the true analog waveform) are much more expensive than logic analyzers (which only show if a digital waveform is hi or low, above or below the logic threshold).
Many people buy both a (dual-trace) o'scope and a 16-trace logic analyzer, which together have a total cost less than one true 8-trace o'scope.

''... more techniques ...''

= Open Source Oscilloscopes =

Of course, you have to already have a working o'scope in order to build and test another o'scope, making this the same sort of chicken-and-egg problem as the [[Projects#RepRap | RepRap]] project, the [http://en.wikipedia.org/wiki/GNU_Compiler_Collection GCC project], and other projects David Cary finds interesting.

=PC Oscilloscopes=

==Open Hardware for PC Oscilloscopes==
===Bitscope===
* $550 BS100U: 2 analog inputs + 8 digital inputs, optically isolated, from BitScope Designs (MetaChip Pty. Ltd.) [http://bitscope.com/]

===MultiAnalyser===
Some people on the PIClist have been discussing designing an open-source oscilloscope.

* I think initial discussions occured on the [http://www.piclist.com/techref/postbot.asp?by=thread&id=%5BEE%5D+scope+project+anyone%3F&tgt=browse "[EE] scope project anyone?"] thread [http://www.piclist.com/techref/postbot.asp?by=time&id=piclist\2004\09\17\111014a.txt] at PIClist.
* Later discussion moved to the [http://tech.groups.yahoo.com/group/MultiAnalyser/ "MultiAnalyser" group at Yahoo]

==Closed, COTS Hardware for PC Oscilloscopes==
* For low frequencies, pretty much any sound card with a line (not microphone) input. Line inputs generally have a range around 0-1 V whereas microphone inputs only have up to about 50 mV, which just isn't enough.

==PC Oscilloscope Software==

===Free Software===

* [http://sourceforge.net/projects/xoscope/ Sourceforge: xoscope] is a digital oscilloscope for Linux that uses input from a sound card or EsounD and/or a ProbeScope/osziFOX and will soon support Bitscope hardware.

===Non-Free Software===
* [http://www.baudline.com/what_is_baudline.html Baudline gratis download] (dual licensed, see Free Software entry).
* [http://www.zelscope.com/ Zelscope] Converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter. Windows trialware.
* [http://www.bitscope.com/software/dso/ BitScope DSO] is a digital oscilloscope logic analyzer for Linux and Windows. It works with BitScope hardware and is distributed as freeware.

==Non-PC Oscilloscope Projects==
* [http://www.circuitcellar.com/archives/viewable/Zhang205/index.html "Handheld Multifunction Scope"] by Jingxi Zhang & Yang Zhang, 2007. "dual-channel oscilloscope supports 250 ksps for each channel". ... also: ohmmeter, capacitance meter, and inductance meter ... pulse generator ... small speaker and OLED output. All functions work stand-alone with OLED display, but it can also be to a host PC with the USB port to display waveforms on the PC display.
* [http://www.dansworkshop.com/electricity-and-electronics/homebuilt-oscilloscope.htm Dan's Workshop: Notes on converting that old compact tv set or computer monitor into an oscilloscope.]
* [http://www.intio.or.jp/jf10zl/tvosc.htm "TV Oscilloscope Adaptor"] "This ... adapter ... changes a TV to a Oscilloscope."

==Uncategorized==
* K3PTO http://www.qsl.net/k3pto/ 8 bit
* [http://massmind.org/techref/scenix/sxoscope/index.htm Massmind: "SX based O’Scope"] by Alberto Geraci of BTX Sistemas
* [http://www.semifluid.com/?p=9 "PIC12F675 Oscilloscope"]
* [http://zedomax.com/blog/2006/12/28/diy-hack-make-your-own-oscilloscope/ "DIY HACK - Make your own Oscilloscope"]
* [http://www.geocities.com/SiliconValley/Lakes/7156/articl3.htm "Solid State Oscilloscope"] by George Katz 1987 -- an extremely simple and small circuit that drives a 10 x 10 LED array. (Would it make sense to adapt the [[PointLess LED Array]] to be more like this?)

Epanorama has many links related to o'scopes and o'scope accessories [http://www.epanorama.net/links/measuring.html#oscilloscope].

==Oscilloscope Design Discussions==
*[http://www.edaboard.com/ftopic41841-30.html Digital oscilloscope Project] edaboard.com

== some low-cost oscilloscopes ==

some low-cost oscilloscopes, in no particular order.
''... it would be nice to mention # of analog input channels, # of digital input channels, whether it can be used under Linux, does it have output channels ... price should (?) include 2 analog probes, ... is it open hardware? ... anything else?''

* price name comments
* $349.95 VT DSO-2815H,1x150MHz or 2x75MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $299.95 VT DSO-2810H,1x100MHz or 2x50MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $250 VT DSO-2810F,2x100MHz, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
*$150 Poscope basic 2 from PoLabs [http://poscope.com/ PoLabs], 2 analog channels, 16/8 digital channels, PC USB oscilloscope, spectrum analyzer, chart recorder, pattern generator, logic analyzer, PWM/ square generator
* $420 PicoScope 2202 from [http://picotech.com/ Pico Technology]([http://www.picotech.com/picoscope-2202.html ])([http://www.interwld.com/pico/pico-3000.htm ])([http://www.pc-oscilloscopes.com/3000.htm])
* $200 Hantek DSO-2090 USB PC Oscilloscope [http://www.beigly.com/catalog/hantek-dso2090-oscilloscope-p-96.html]
* $380.00 DSO2250 100MHz PC-SCOPE 250MS/s [http://world-educational-services.net/cart/index.php?main_page=product_info&cPath=56&products_id=134&zenid=68c155f8ccc626c8d316e8417b32dc5d]
* CAN 219.99 Syscomp Electronic Design DSO-101 [http://syscompdesign.com/] (Syscomp supports the "[https://sourceforge.net/projects/oip The Open Instrumentation Project]" [http://syscompdesign.com/oip.htm])
* EUR 427 ETC s.r.o. M520 Oscilloscope [http://etcsk.com/]
* $222 ANT8 : 8 Channel Logic Analyzer (EasySync)[http://easysync-ltd.com/]
* $200 PS40M10 : Swordfish Hand-Held Instrument (1 channel) USB (EasySync)
* $220 DS1M12 : Stingray Multi-Function Instrument (2 channel) USB (EasySync)
* under $600 : [[Jameco]] has some actual stand-alone oscilloscopes for under $600. So does www.tequipment.com - see Rigol 'scopes from China - good quality - also on eBay.
* under $200 : Carl's Electronics has some stand-alone and PC-hosted (parallel port?) oscilloscopes for under $200.[http://www.electronickits.com/gold/gold.htm]
* $170 HobbyLab USB oscilloscope [http://hobbylab.us/USBOscilloscope/Home.htm]
* $500 DS1022C : 2 Channel, 25 MHz Rigol Technologies Inc.[http://rigolna.com/]
* $999 CS320A Cleverscope [http://cleverscope.com/] (has a discussion forum[http://cleverscope.com/forum/])
* $167 DrDAQ "data logger" (parallel port) from Pico Technology [http://www.drdaq.com/]
* $970 NI USB-5132 : USB digitizer from National Instruments [http://sine.ni.com/nips/cds/view/p/lang/en/nid/203719]
* $139 Parallax USB Oscilloscope 2 analog inputs + trigger; 1 MS/s [http://parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/txtSearch/28014/List/1/ProductID/46/Default.aspx?SortField=ProductName%2cProductName]
* $170 PC USB Oscilloscope DiSco (HobbyLab, LLC). 2 analog inputs ( 200 KHz ) + 16 digital inputs (or 8 digital inputs + 8 digital outputs). [http://hobbylab.us/]
* $150 ST16B 10 MHz stand-alone oscilloscope, 2 analog inputs [http://www.electronickits.com/gold/gold.htm]
* $190 VEPCS100 ( PCS100 ) - PC Based Oscilloscope; 1 analog input ( 12 MHz ); optically isolated from PC [http://www.electronickits.com/gold/gold.htm]
* $950 DSO-8502 USB Oscilloscope, 2 analog inputs (250MSa/s) + external trigger; 1 digital output (trigger out); buffer: 512K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $799 DSO-8202 USB Oscilloscope, 2 analog inputs (200MSa/s) + external trigger; 1 digital output (trigger out); buffer: 128K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $108 LabJack U3 USB data acquisition and control device, 16 analog inputs ( 12 bit, 2.5 KSa/s at 12 bit resolution, 50 KSa/s at 8 bit resolution), buffer: 984 samples, 2 analog outputs, digital outputs [http://www.labjack.com/labjack_u3.php]
* $249 S2X100 USB Oscillloscope, 2 analog inputs (100Ms/s) with 8 bit resolution, buffer: 64K samples [http://www.dynoninstruments.com/products_s2x100.php?gclid=CNzyz_625pgCFQIyxwodgwSvMA]
* $495 ELAB-080 [http://www.dynoninstruments.com/products_elab080.php]
* $745 USBee AX-Plus, 2 analog inputs (Max 16 MS/s ?) and 8 digital inputs [http://www.usbee.com/ax.html]

''FIXME: [http://measurementcomputing.com/cbicatalog/directory.asp?dept_id=403 Measurement Computing] has some wireless and USB analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.dataq.com/ DATAQ Instruments, Inc.] has some USB and Ethernet analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.designnotes.com/ DesignNotes.com, Inc.] has some USB and handheld LCD o'scopes from [http://www.velleman.be/ Velleman]: [http://www.vellemanusa.com/us/enu/product/list/?id=347914 Velleman oscilloscopes] -- add to the above list.''

''FIXME: [http://www.linkinstruments.com/oscilloscope.htm Link Instruments Inc.] has several USB o'scopes and "USB MSO" ("mixed signal o'scope"). Are they already listed above?''

EasySync[http://easysync-ltd.com/] is a distributor of RockyLogic's ANT8/etc products.

Test Equipment Solutions Today, Inc.[http://testsolu.com/] is a distributor of Rigol's DVM and oscilloscope products.

When you [http://search.ebay.com/search/search.dll?satitle=oscilloscope search eBay for oscilloscope], you might find some good deals.

== further reading ==

* other [[hardware tool | good equipment to buy when getting started]]

== external links ==

* [http://www.embedded.com/columns/breakpoint/160902529?printable=true "Scoping out palm-sized USB oscilloscopes"] by Jack Ganssle 2005, Embedded Systems Design. A review of 3 USB oscilloscopes -- reader comments at the end mention a few more USB o'scopes. ''(FIXME: make sure all the scopes mentioned are included on the above list)''
* Keith has made a list of [http://www.techtravels.org/amiga/amigablog/?p=167 "PC USB logic analyzers that cost under $1000."][http://www.techtravels.org/tech/logicanalyzer.html], some of which can be used as an o'scope. ''Should I use the same $1000 price cut-off for the above list? Or perhaps double or halve it?''
* Brooke Clarke has posted a list of [http://prc68.com/I/PCO.html "PC based Oscilloscopes"]
* [http://en.wikipedia.org/wiki/Oscilloscope Wikipedia: oscilloscope]
* Other discussions of [http://forums.reprap.org/read.php?13,5086 "Cheap digital storage oscilloscope"]
* [http://www.ganssle.com/microscopes.htm The Ganssle Group reviews Inexpensive USB Scopes and Logic Analyzers]
* [http://massmind.org/techref/tools.htm Massmind: Tools] lists a few sources for a variety of tools used in electronics: o'scopes, logic analyzers, meters, waveform generators, etc.
* [http://ask.slashdot.org/askslashdot/04/02/28/0041233.shtml Slashdot: "Cheap PC Oscilloscopes - Any Recommendations?"]
* [http://slashdot.org/askslashdot/01/12/07/191220.shtml Slashdot: "Building a Cheap Oscilloscope Using Your PC?"]
* [http://www.epanorama.net/links/measuring.html#pcmeasuring ePanorama.net: "Using PC as a measurement instrument"] ''(FIXME: anything we should add to the above list?)''

----
[[Category:Techniques]][[Category:Test Equipment]]

Oscilloscope

2009-10-26T20:29:46Z

Cov: /* Closed, COTS Hardware for PC Oscilloscopes */

An '''oscilloscope''' (often abbreviated '''o'scope''' or '''scope''') displays signal voltages as a 2-D graph, usually as voltage (vertical axis) as a function of time (horizontal axis).

The ''probe'' of a o'scope is held against, or is clipped to, the metal wire carrying the signal of interest.

A '''dual-trace''' o'scope has 2 probes, so 2 different signals can be seen -- so not only the shape of the signal can be seen, but also the exact time from events on one signal to events on the other signal.

= Techniques =

Sometimes one wants to look at a 8-bit data bus -- typically one uses a "logic analyzer" to look at lots of time-aligned digital signals.
For a given number of signals to look at, oscilloscopes (which show the true analog waveform) are much more expensive than logic analyzers (which only show if a digital waveform is hi or low, above or below the logic threshold).
Many people buy both a (dual-trace) o'scope and a 16-trace logic analyzer, which together have a total cost less than one true 8-trace o'scope.

''... more techniques ...''

= Open Source Oscilloscopes =

Of course, you have to already have a working o'scope in order to build and test another o'scope, making this the same sort of chicken-and-egg problem as the [[Projects#RepRap | RepRap]] project, the [http://en.wikipedia.org/wiki/GNU_Compiler_Collection GCC project], and other projects David Cary finds interesting.

=PC Oscilloscopes=

==Open Hardware for PC Oscilloscopes==
===Bitscope===
* $550 BS100U: 2 analog inputs + 8 digital inputs, optically isolated, from BitScope Designs (MetaChip Pty. Ltd.) [http://bitscope.com/]

===MultiAnalyser===
Some people on the PIClist have been discussing designing an open-source oscilloscope.

* I think initial discussions occured on the [http://www.piclist.com/techref/postbot.asp?by=thread&id=%5BEE%5D+scope+project+anyone%3F&tgt=browse "[EE] scope project anyone?"] thread [http://www.piclist.com/techref/postbot.asp?by=time&id=piclist\2004\09\17\111014a.txt] at PIClist.
* Later discussion moved to the [http://tech.groups.yahoo.com/group/MultiAnalyser/ "MultiAnalyser" group at Yahoo]

==Closed, COTS Hardware for PC Oscilloscopes==
* For low frequencies, pretty much any sound card with a line (not microphone) input. Line inputs generally have a range around 0-1 V whereas microphone inputs only have up to about 50 mV, which just isn't enough.

==PC Oscilloscope Software==

===Free Software===

* [http://sourceforge.net/projects/xoscope/ Sourceforge: xoscope] is a digital oscilloscope for Linux that uses input from a sound card or EsounD and/or a ProbeScope/osziFOX and will soon support Bitscope hardware.

===Non-Free Software===
* [http://www.baudline.com/what_is_baudline.html Baudline] is a signal analyzer designed for scientific visualization, using input from recorded data files or from a sound card. For Linux / Solaris. Freeware (no redistribution, no reverse engineering).
* [http://www.zelscope.com/ Zelscope] Converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter. Windows trialware.
* [http://www.bitscope.com/software/dso/ BitScope DSO] is a digital oscilloscope logic analyzer for Linux and Windows. It works with BitScope hardware and is distributed as freeware.

==Non-PC Oscilloscope Projects==
* [http://www.circuitcellar.com/archives/viewable/Zhang205/index.html "Handheld Multifunction Scope"] by Jingxi Zhang & Yang Zhang, 2007. "dual-channel oscilloscope supports 250 ksps for each channel". ... also: ohmmeter, capacitance meter, and inductance meter ... pulse generator ... small speaker and OLED output. All functions work stand-alone with OLED display, but it can also be to a host PC with the USB port to display waveforms on the PC display.
* [http://www.dansworkshop.com/electricity-and-electronics/homebuilt-oscilloscope.htm Dan's Workshop: Notes on converting that old compact tv set or computer monitor into an oscilloscope.]
* [http://www.intio.or.jp/jf10zl/tvosc.htm "TV Oscilloscope Adaptor"] "This ... adapter ... changes a TV to a Oscilloscope."

==Uncategorized==
* K3PTO http://www.qsl.net/k3pto/ 8 bit
* [http://massmind.org/techref/scenix/sxoscope/index.htm Massmind: "SX based O’Scope"] by Alberto Geraci of BTX Sistemas
* [http://www.semifluid.com/?p=9 "PIC12F675 Oscilloscope"]
* [http://zedomax.com/blog/2006/12/28/diy-hack-make-your-own-oscilloscope/ "DIY HACK - Make your own Oscilloscope"]
* [http://www.geocities.com/SiliconValley/Lakes/7156/articl3.htm "Solid State Oscilloscope"] by George Katz 1987 -- an extremely simple and small circuit that drives a 10 x 10 LED array. (Would it make sense to adapt the [[PointLess LED Array]] to be more like this?)

Epanorama has many links related to o'scopes and o'scope accessories [http://www.epanorama.net/links/measuring.html#oscilloscope].

==Oscilloscope Design Discussions==
*[http://www.edaboard.com/ftopic41841-30.html Digital oscilloscope Project] edaboard.com

== some low-cost oscilloscopes ==

some low-cost oscilloscopes, in no particular order.
''... it would be nice to mention # of analog input channels, # of digital input channels, whether it can be used under Linux, does it have output channels ... price should (?) include 2 analog probes, ... is it open hardware? ... anything else?''

* price name comments
* $349.95 VT DSO-2815H,1x150MHz or 2x75MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $299.95 VT DSO-2810H,1x100MHz or 2x50MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $250 VT DSO-2810F,2x100MHz, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
*$150 Poscope basic 2 from PoLabs [http://poscope.com/ PoLabs], 2 analog channels, 16/8 digital channels, PC USB oscilloscope, spectrum analyzer, chart recorder, pattern generator, logic analyzer, PWM/ square generator
* $420 PicoScope 2202 from [http://picotech.com/ Pico Technology]([http://www.picotech.com/picoscope-2202.html ])([http://www.interwld.com/pico/pico-3000.htm ])([http://www.pc-oscilloscopes.com/3000.htm])
* $200 Hantek DSO-2090 USB PC Oscilloscope [http://www.beigly.com/catalog/hantek-dso2090-oscilloscope-p-96.html]
* $380.00 DSO2250 100MHz PC-SCOPE 250MS/s [http://world-educational-services.net/cart/index.php?main_page=product_info&cPath=56&products_id=134&zenid=68c155f8ccc626c8d316e8417b32dc5d]
* CAN 219.99 Syscomp Electronic Design DSO-101 [http://syscompdesign.com/] (Syscomp supports the "[https://sourceforge.net/projects/oip The Open Instrumentation Project]" [http://syscompdesign.com/oip.htm])
* EUR 427 ETC s.r.o. M520 Oscilloscope [http://etcsk.com/]
* $222 ANT8 : 8 Channel Logic Analyzer (EasySync)[http://easysync-ltd.com/]
* $200 PS40M10 : Swordfish Hand-Held Instrument (1 channel) USB (EasySync)
* $220 DS1M12 : Stingray Multi-Function Instrument (2 channel) USB (EasySync)
* under $600 : [[Jameco]] has some actual stand-alone oscilloscopes for under $600. So does www.tequipment.com - see Rigol 'scopes from China - good quality - also on eBay.
* under $200 : Carl's Electronics has some stand-alone and PC-hosted (parallel port?) oscilloscopes for under $200.[http://www.electronickits.com/gold/gold.htm]
* $170 HobbyLab USB oscilloscope [http://hobbylab.us/USBOscilloscope/Home.htm]
* $500 DS1022C : 2 Channel, 25 MHz Rigol Technologies Inc.[http://rigolna.com/]
* $999 CS320A Cleverscope [http://cleverscope.com/] (has a discussion forum[http://cleverscope.com/forum/])
* $167 DrDAQ "data logger" (parallel port) from Pico Technology [http://www.drdaq.com/]
* $970 NI USB-5132 : USB digitizer from National Instruments [http://sine.ni.com/nips/cds/view/p/lang/en/nid/203719]
* $139 Parallax USB Oscilloscope 2 analog inputs + trigger; 1 MS/s [http://parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/txtSearch/28014/List/1/ProductID/46/Default.aspx?SortField=ProductName%2cProductName]
* $170 PC USB Oscilloscope DiSco (HobbyLab, LLC). 2 analog inputs ( 200 KHz ) + 16 digital inputs (or 8 digital inputs + 8 digital outputs). [http://hobbylab.us/]
* $150 ST16B 10 MHz stand-alone oscilloscope, 2 analog inputs [http://www.electronickits.com/gold/gold.htm]
* $190 VEPCS100 ( PCS100 ) - PC Based Oscilloscope; 1 analog input ( 12 MHz ); optically isolated from PC [http://www.electronickits.com/gold/gold.htm]
* $950 DSO-8502 USB Oscilloscope, 2 analog inputs (250MSa/s) + external trigger; 1 digital output (trigger out); buffer: 512K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $799 DSO-8202 USB Oscilloscope, 2 analog inputs (200MSa/s) + external trigger; 1 digital output (trigger out); buffer: 128K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $108 LabJack U3 USB data acquisition and control device, 16 analog inputs ( 12 bit, 2.5 KSa/s at 12 bit resolution, 50 KSa/s at 8 bit resolution), buffer: 984 samples, 2 analog outputs, digital outputs [http://www.labjack.com/labjack_u3.php]
* $249 S2X100 USB Oscillloscope, 2 analog inputs (100Ms/s) with 8 bit resolution, buffer: 64K samples [http://www.dynoninstruments.com/products_s2x100.php?gclid=CNzyz_625pgCFQIyxwodgwSvMA]
* $495 ELAB-080 [http://www.dynoninstruments.com/products_elab080.php]
* $745 USBee AX-Plus, 2 analog inputs (Max 16 MS/s ?) and 8 digital inputs [http://www.usbee.com/ax.html]

''FIXME: [http://measurementcomputing.com/cbicatalog/directory.asp?dept_id=403 Measurement Computing] has some wireless and USB analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.dataq.com/ DATAQ Instruments, Inc.] has some USB and Ethernet analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.designnotes.com/ DesignNotes.com, Inc.] has some USB and handheld LCD o'scopes from [http://www.velleman.be/ Velleman]: [http://www.vellemanusa.com/us/enu/product/list/?id=347914 Velleman oscilloscopes] -- add to the above list.''

''FIXME: [http://www.linkinstruments.com/oscilloscope.htm Link Instruments Inc.] has several USB o'scopes and "USB MSO" ("mixed signal o'scope"). Are they already listed above?''

EasySync[http://easysync-ltd.com/] is a distributor of RockyLogic's ANT8/etc products.

Test Equipment Solutions Today, Inc.[http://testsolu.com/] is a distributor of Rigol's DVM and oscilloscope products.

When you [http://search.ebay.com/search/search.dll?satitle=oscilloscope search eBay for oscilloscope], you might find some good deals.

== further reading ==

* other [[hardware tool | good equipment to buy when getting started]]

== external links ==

* [http://www.embedded.com/columns/breakpoint/160902529?printable=true "Scoping out palm-sized USB oscilloscopes"] by Jack Ganssle 2005, Embedded Systems Design. A review of 3 USB oscilloscopes -- reader comments at the end mention a few more USB o'scopes. ''(FIXME: make sure all the scopes mentioned are included on the above list)''
* Keith has made a list of [http://www.techtravels.org/amiga/amigablog/?p=167 "PC USB logic analyzers that cost under $1000."][http://www.techtravels.org/tech/logicanalyzer.html], some of which can be used as an o'scope. ''Should I use the same $1000 price cut-off for the above list? Or perhaps double or halve it?''
* Brooke Clarke has posted a list of [http://prc68.com/I/PCO.html "PC based Oscilloscopes"]
* [http://en.wikipedia.org/wiki/Oscilloscope Wikipedia: oscilloscope]
* Other discussions of [http://forums.reprap.org/read.php?13,5086 "Cheap digital storage oscilloscope"]
* [http://www.ganssle.com/microscopes.htm The Ganssle Group reviews Inexpensive USB Scopes and Logic Analyzers]
* [http://massmind.org/techref/tools.htm Massmind: Tools] lists a few sources for a variety of tools used in electronics: o'scopes, logic analyzers, meters, waveform generators, etc.
* [http://ask.slashdot.org/askslashdot/04/02/28/0041233.shtml Slashdot: "Cheap PC Oscilloscopes - Any Recommendations?"]
* [http://slashdot.org/askslashdot/01/12/07/191220.shtml Slashdot: "Building a Cheap Oscilloscope Using Your PC?"]
* [http://www.epanorama.net/links/measuring.html#pcmeasuring ePanorama.net: "Using PC as a measurement instrument"] ''(FIXME: anything we should add to the above list?)''

----
[[Category:Techniques]][[Category:Test Equipment]]

User talk:DavidCary

2009-10-26T20:28:00Z

Cov: /* Baudline Free Software */ new section

== from russ_hensel Jan 21 09 ==

I have been thinking about how to get more traffic at open circuits. So far:

*Post links to it on forums, these are usually on topic for the forum, not just ads.
*Started a sub wiki for SourceBoost C ( much of which is just a collection of stuff I was doing here anyway ) If this seems to commercial, let me know and we can see if there is a better way to do it. I think it fits the site well however.
*When I link to sites now I often send an email letting them know and inviting them to contribute, not too much has come of this yet, but more time will tell.

*Should we consider adding the site to some web rings? If we think this is a good idea what process should we use to discuss and keep the process under control.

Russ

== from joshua w. ==
The pceeg project has become a alpha release now. I now have eagle cad files schematics and boards for all three boards.
I have the pcb from sparkfun in my hand.
I will be ordering parts for the microcontroler printed circuit board this weekend to test it out.
Take a look at it it has changed a lot.
I look forward to your comments I would like help on this project.

== from russ hensel ==

I am making a page just for the spam topic [[How Should We Deal With Spam]] and will move all the discussion here to their if you do not object. Then will link in a few other places as well. Ok.

''That sounds great. I've just finished moving all the spam-related discussion on this "User talk:DavidCary" page to the [[spam]] page, but I'm sure there are other similar discussions scattered all over the place. I hope we will be able to reap the advantages of [http://www.communitywiki.org/ConsolidateInformation consolidate information]. --[[User:DavidCary|DavidCary]] 12:33, 9 April 2008 (PDT)''

== question about russ_hensel_test ==

from my talk page:

russ_hensel_test as with a few other pages that should be linked to only from my personal page were indeed tests, some should have already
been deleted. At the time I had no idea how to move them. I will try to leave less trash behind.

Russ

No worries.
It's easy enough to fix.

I just wanted to check in and see what the scoop was before plunging in and deleting a page that *looks* redundant, but perhaps is merely in the middle of some complex transformation.
--[[User:DavidCary|DavidCary]] 21:29, 14 February 2008 (PST)

== Take a look at..... ==
[[russ_hensel_test]]

take a look at a page I am working on for PIC projects ( all external )
It clearly has a ways to go, but then I am planning to link it in somewhere public.

The page is supposed to have a fairly clean look for browsing, and some structure for searching.

I am still struggling with getting the formatting down right.
Is there a test for what is open that we should be applying?

Let me know your thoughts.

russ_hensel

: Looking good. Thank you. The "Editing help" link (just below the "Summary" bar that shows up after you start editing a page) *ought* to have tips on formatting. Maybe next month :-).
: I made a few minor tweaks that I *thought* made it look better -- hit that "undo" button if I've only messed things up.
: For [[open hardware]], I'm using the consensus definition at [http://en.wikipedia.org/wiki/open_source_hardware Wikipedia:open source hardware]. If they've posted the schematics and firmware online, and indicated that anyone can use the design information -- perhaps released under GPL, Creative Commons, or public domain -- then it's open hardware.

== Armus board ==
Hi!
Very glad at least one guy did show some enthousiasm about the project!
Currently, as the project was left (and will probably stay....):
Hardware is all good. The board with gerbers can be sent to most major Fab House and you will receive a functionnal design. Proto1 was tested and around 5 glitches have been found and corrected for Proto2, wich was never tested but should be 100% functionnal.

The Firmware of the 4 DSPics is symetrical, and is "complete". It interface to Servos and DCs. The input encoder, if I recall, is not done, but the code is there and all C, so it should be easy to just copy-paste a snippet from somewhere else into the project.
The Firmware for the multi-IO PIC18 is complete, and you will be able to play with all IO.
The Drivers to communicate to the PIC and DSPIC from the kernel is done and documented.
Ah, yeah, we have drivers for Ethernet/CAN/Sound.
We also have a complete compiled kernel ready to load onto the board with various "demonstration" mode.

Most of the work left is polishing here and there, as the firmware/driver part was done is haste. Most of the things work 100%, and will need no touch, but some functions (like the Quadrature encoders) are plain missing.

The part where more work is to be done is on the Integrated Devellopment Environment (IDE). Shure, you can use KDevellopp, Eclipse, or any cross compiler out there. You could even download some dev.boards' software and load it onto ARMUS and compile natively from there. We had in mind (read the article) to creat a simple and easy IDE for 1st year undergrads, so maybe it's not necessary for you :P

If you want the =WHOLE= project CVS for you to enjoy, I have it and could send it to you trough FTP or any other way you prefer. I guess I could also just mail a DVD. It weights around 700MB, and there is ton of french comment and files (as the team, in Quebec, was native french) but I could translate any part you feel is critical for specific applications.

If you want to work on this "on your own", most of the board is based on atmel's AT91RM9200EK and AT91RM9200DK . Their demonstration Kernels should run as-is with the same procedure as Atmel's.

Just to say: what do you plan to use the board for?
Thanks for your interest!
-Jerome Marchand

'''Wow.'''
This is too cool to stick on a shelf a let it gather dust.
I want to see projects like this "ratchet forward".
I want to allow people to build off last year's work rather than starting all over again from scratch -- so in a few years we can finish amazingly cool projects that are far too complicated for one team to finish in a year.

I think this [[ARMUS Embedded Linux Board]] might be perfect for a CNC machine.
The LinuxCNC software runs on Linux, so it ought to run on this Linux board.
And the DSPics should be able to drive the power transistors that run the motors on the CNC machine, and track the position of the routing head.

And not just a single CNC machine -- a series of open-source CNC machine designs. Designs that anyone can build, improve, and then share those improvements with the next builder.

Yes, please do send me the project files.
These are all "public domain" or "[http://creativecommons.org/ creative commons]" or "open source", with no warranty, right?

Do you think that perhaps http://SourceForge.net/ or [http://en.wikipedia.org/wiki/GNU_Savannah GNU Savannah] might be a more appropriate place to host this software than Opencircuits?

Alas, I am embarrassed to admit that I barely speak 5 words of the lingua franca, the French language.

--[[User:DavidCary|DavidCary]] 19:16, 3 November 2007 (PDT)

== Programmable Chip EEG ==
Why don't you help finish my programmable chip eeg project and then use what you learned and the results to then create your own project. Programmers like to reuse working modulas instead of reinventing the wheel.

The pceeg has gone through a major revision streamlining its design and I am working on the father board a digital computing board for the project. I will be cleaning up the page.

''Thank you. I hope the [[Programmable Chip EEG]] project becomes wildly successful. --[[User:DavidCary|DavidCary]] 10:01, 19 July 2007 (PDT)''

I am getting to be in the alpha release check it all out at the sourceforge page and the open circuits wiki.

==a talk through Wiki Howto==
Hi DavidCary
 Thank you very much you create this wiki to let us to share electronic projects.
 I want to merge the "[[RS232 Dev Board]]" and "[[RS232 RS485 USB Converter Board]]", so want to discuss to the author, Tkb, of "RS232 Dev Board". However, i cannot find out the talk page like i talk to you by this way. Can you point me how to do it?
 thanks
 [[User:Yan|yan]]

''If you have a question or comment specifically about the "RS232 Dev Board", please leave a comment on the [[RS232 Dev Board]] page or its "discussion" page.''
''You can click on "[[User talk:Tkb]]" to leave a note on Tkb's user talk page.''
''Since there are more people watching the "RS232 Dev Board" page than Tkb's page, you'll probably get a quicker response if you post to the "RS232 Dev Board" page than to Tkb's page.''
''--[[User:DavidCary|DavidCary]] 20:00, 29 December 2006 (PST)''

[[User:Chazegh|Chazegh]] created this "Open Circuits wiki".
I am flattered that you think I had something to do with it.
But since Chazegh seems to be too busy to spend much time here,
it's up to you and I (and whoever else we can recruit) to create content here.
--[[User:DavidCary|DavidCary]] 21:08, 29 December 2006 (PST)

5.7.2007 Joe Silva:
Hi David, great site!
...

----

Aloha David,
Roger here, I'm still puzzeled as to how to create a new article. I uploaded an image file for the 723 regulator (my article subject). This went into an "Image File page" automatically, OK. I added it to the Voltage Regulators section of Components/Integrated Circuits, OK. But I couldn't figure out how to make a document like there is for LT1528 OO. I put the info I have into the discussion page for the image, but that is only a temporary solution.

How does one create a new article page that isn't a "talk" page for something else? Beside the info on the IC, I have a couple of documents that are in-depth on using the device. These should be near each other as well as near the info document above. How would I go about setting up a "723" sub-chapter of "Integrated Circuits"? I guess that's as clear as I can make the question.

I would also like to suggest a modification to the linkage. I'm reading the synopsis on the LT1528, I want to find oout more, so I click on the image, but instead of taking me to an in-depth article, it takes me to the image file page. There I have to look at the Links to find the article (which is only identified as LT1528). I'd like to be taken to the article instead of the image. Take me to the image only if there is no article. Of course this may be more difficult to make happen--I don't know how the site is structured. My web programming is very basic. Still, I think this makes sense from a user's POV.

Thanks in Advance,
[[User:RogerAF|RAF]] 17:26, 22 May 2007 (PDT)

Aloha, Roger.
You're doing great.

I agree that it would be nice if clicking on the picture of the LT1528 took you directly to the article about the LT1528.
I don't know how to fix it.

Do you see the "Help" link in the navigation bar on the left side of every page?
I think the page it brings up needs a few more tips.
But I want to keep it short and simple.
If I explained every detail, it would become a bloated 100-page document that nobody would read.

There are already far too many bloated 100-page documents about electronics.

I hope that you, dear reader, and other volunteers will make Open Circuits into a place where people can learn to do amazing things.
A place that avoids forcing people to learn 100 irrelevant details before learning the one thing they need to know before they get back to building their robot (or whatever).
A place that never makes people throw away good ideas, because we never confuse people into believing that it would be far more complicated and expensive to build than it really is.

p.s.:
Picking the name of a page is a bit of an art.
Since we want to refer to a page a lot, that's easier when the name is very short.
People new to wiki always pick names that are too long, or have too many capital letters.
Fortunately, it's very simple to rename pages.
You rename pages by clicking on the incorrectly-named "Move this page" button.
(I don't know how to fix that, either).
--[[User:DavidCary|DavidCary]] 10:15, 23 May 2007 (PDT)

=== making links ===

Speaking of linkage, making links is one of the most important parts of this wiki.

Whenever you find one article mentioning some other article, you can click on that word to get more detail.

If that word is not already clickable (underlined and colored), please make it clickable.
To make a word clickable, hit the "edit" button at the top of the page.
Then add double brackets <nowiki>"[["</nowiki> and <nowiki>"]]"</nowiki> around that word.
(Some people recommend only making the first mention of that word clickable).

The cheatsheet ( http://en.wikipedia.org/wiki/Wikipedia:Cheatsheet ) calls this an "internal link".

Here's the trick: you can add those brackets to any word, making it into a link.
Some of those links will go to pages that don't exist yet.

What happens when you click on one of those links to a page that doesn't exist yet?

I'm not going to tell you what happens.
Go find out for yourself.
You can practice in the [[meta:Sandbox]].

--[[User:DavidCary|DavidCary]] 10:15, 23 May 2007 (PDT)

----
Aloha David,
Roger again; I want to thank you for the info and hints. I'm catching on. I got my component description linked to the caption under the image on the Components/Voltage Regulators page. And I created a "New Article" which I then "moved" to the title of my article. And my article has a link to the description and that has a link to the article, so I'm getting the hang of it. I have several schematics and PC artwork images to upload and link to my article, plus a second article I want to publish (I didn't write it, but I've been unable to find it on the internet--I have a xeroxed copy from 1986 or so and that is the only existing one as far as I know). That article also has several images that go along with it. I wondered about the feasability of uploading a .pdf file (I made one of it) to this site. Would that work? Should I even try? I don't want to screw anything up, but wouldn't that be a lovely thing if we could upload .pdf files? Just a thought.

Again, Thanks very much, I've made some progress.

[[User:RogerAF|RAF]] 19:48, 23 May 2007 (PDT)

Aloha, Roger.
You are welcome.
Have you tried creating a link to an article that doesn't exist yet, just to see what happens when you click on that link? For example, the [[switching regulator]] page that I'm going to start in a few days.

I don't know about this article that you didn't write.
If the original author wants people to post it widely, and doesn't mind us editing it, then great, let's post it (and give correct attribution).
But some writers go a little crazy when they see that someone random stranger has copied their stuff and posted it to the internet.
(That's why there's that "DO NOT SUBMIT COPYRIGHTED WORK WITHOUT PERMISSION!" note at the bottom of each Edit page).

I wouldn't mind you posting a .pdf file (that you wrote) temporarily.
It's better than nothing.
But I would expect someone to eventually convert it to text-and-images.
That makes it much easier for the next person to improve the it.

Thank you again for adding useful information to Open Circuits.
I hope you won't mind people "improving" the things you post here.

--[[User:DavidCary|DavidCary]] 21:26, 23 May 2007 (PDT)

Aloha David,
Sorry for the delay, I had a loonng job and then our cable modem failed. At least they swapped us a new one free (hooray RoadRunner). But I want to explain the article: "The Many-Talented 723" by Glenn Prescott. I came across this as a xerox copy sometime around 1985. It was evidently published in a magazine for radio enthusiasts--there are some ads on the last page for radio gear. But the name of the magazine isn't on any of the pages. I Googled for the article and got no returns. I think it is a very good article as far as describing the IC and how to use it. It helped me when I was a beginner, so I want to share it. However, I don't want anyone to get into trouble over it. I just did another search on Google and all the returns refer to my mention of it here on Open Circuits. Like I said, this is a copy that I have, no clue as to the magazine that published it, no copyright date, no nothin'. But I will leave it to your judgement if it is a risk. I still have my own article to get uploaded along with images. I will concentrate on getting mine done before doing anything with the copied article.

[[User:RogerAF|RAF]] 20:27, 26 May 2007 (PDT)

Unless the author has given permission to publish it, I think a better idea would be to write your own article, citing the one you're talking about further details. Ideas are not copyright, but the expression of them (i.e. the text of the article) is, or so I understand. [[User:Autarch|Autarch]] 10:22, 13 June 2007 (PDT)

== spammers ==

moved to [[spam]]

== OpenCircuits Guideline ==

Here is a rewritten guidline as per your request. It may need some polishing:

''... moved to [[We love volunteers]] ...''

[[User_talk:Freqmax]]

Start the page [[Guideline]] ..?

''I think that's great. We might want a "guideline" page someday, but for now I'm going to stick it over into "[[We love volunteers]]".'' --[[User:DavidCary|DavidCary]] 00:44, 3 August 2007 (PDT)

== Delete object ==

[http://www.opencircuits.com/index.php?title=Image:Geda_pcb_print_layout.png&action=delete&oldimage=20070731124511%21Geda_pcb_print_layout.png&wpEditToken=f5d80d0b9e925f6a32d06cabf08f986b%5C Can you delete this?] [[User:Freqmax|Freqmax]] 05:50, 31 July 2007 (PDT)

: I see that [[:Image:Geda_pcb_print_layout.png]] is currently in use on page [[GEDA Quickstart]]. Why would I want to delete an image that is currently in use? --[[User:DavidCary|DavidCary]] 13:01, 11 September 2008 (PDT)

== Spam ==

moved to [[spam]]

== Thanks ==

David, you left a comment on my dead blog way back in Jan about this and other Open Circuit wikis. Thanks!!!

I will see what I can contribute and learn here. --[[User:SamRose|SamRose]] 06:53, 9 May 2008 (PDT)

== Basic Circuits Page ==

I'd like to add some RF circuits to the Basic Circuits page. It seems to me pointful to break each entry out into it's own page. Is it alright if I do this? --[[User:Wackyvorlon|Wackyvorlon]] 15:01, 19 May 2008 (PDT)

Sure, go ahead and add RF circuits anywhere.
This is a wiki -- if we later decide to re-organize RF circuits elsewhere, that's easy enough to do.
--[[User:DavidCary|DavidCary]] 19:48, 20 May 2008 (PDT)

== Supporting More Image Type ==

Currently open circuit supports png, gif, jpg, jpeg formats. Is it possible to support svg as well? --[[User:Tcwden|Tcwden]] 04:51, 23 February 2009 (UTC)

: I see that the Mediawiki software we use can support SVG with a bit of setup. http://www.mediawiki.org/wiki/SVG . --[[User:DavidCary|DavidCary]] 05:15, 23 February 2009 (UTC)

Thank you. I think SVG is useful graphics format for our discussion because, being in vector format, it is more convenient to edit and resize if needed.--[[User:Tcwden|Tcwden]] 01:40, 25 February 2009 (UTC)

== Baudline Free Software ==

On the Open Circuits oscilloscope page, I don't understand why you took "baudline" out of the "open source" section. Anyone can buy the source code with a "GPL source code license" at http://www.baudline.com/source_code.html . You have read what our Main Page says about "Selling Free Software", right? GPL is open source, right? --DavidCary 03:16, 26 October 2009 (UTC)

Sorry, I only read the license for the free download.

Got A Blog, Wiki or Website?

2009-10-19T16:45:47Z

Cov:

Do you know an electronics-related wiki? Link to it on the [[WikiNode]] page.

Member of this Wiki and got a Blog or Website? Link to it on this "Got A Blog, Wiki or Website?" page:

Note that there are template enteries that can make editing easier.

At the bottom of the page is a section for non member, but member recommended sites.

== Wiki Members Links ==

{| class="wikitable"
|-valign="top"
! What
! Link
! Comment


|-valign="top"
|
*WebSite
|
[http://millpcbs.com/ Millpcbs.com]
|A website dedicated to milling PCB's and the DIY machines to accomplish it.

|-valign="top"
|
*WebSite
|
[http://pminmo.com/ PMinMO.com]
|A website dedicated to DIY CNC electronics.


|-valign="top"
|
*Blog
|
[http://www.paleotechnologist.net Paleotechnologist.Net]
|A blog exploring ways to blend old-school and new-school technology.


|-valign="top"
|
*WebSite
|
[http://www.gadgetgangster.com Gadget Gangster]
|A site to publish and sell your electronics projects

|-valign="top"
|
*WebSite
|[http://meaning.com/wiki/Rubisync Rubisync]
|Open Source Synchronized Magnetometers


|-valign="top"
|
* WebSite
* Blog
* Forum
* Wiki
|
[http://vtluug.org Linux and Unix Users Group at Virginia Tech]
|The Linux and Unix Users Group at Virginia Tech's membership is made up primarily of Computer and Electrical Engineering students, some of whom are contributers to this wiki. An ongoing project of theirs is to develop and document FOSS workflows that can eventually completely replace the current dependencies on PSpice, LogicWorks and MATLAB.

|}

== Non Members Links ==

Found a Blog or Website that is so general that it does not fit well into the structure of this site? If you think it is so good that you are willing to sign your recommendation then list it here.

{| class="wikitable"
|-valign="top"
! What
! Link
! Comment


|-valign="top"
|
*WebSite
|[http://www.amplifiersite.com/ Amplifier types] 
|Dick's website about the most common amplifier types. Links to other sites are provided as well.



|-valign="top"
|
*WebSite
*Blog
*Wiki
|[http://jeffrey.co.in/ Jeffrey's Website] [http://jeffrey.co.in/blog Jeffrey's Blog ] [http://jeffrey.co.in/wiki Jay Free Wiki for tutorials]
|Jeffrey's website for Open Hardware and Free Software. Find a lot on electronics tutorials, open hardware, GNU/Linux...



|-valign="top"
|
*Blog
|
[http://samthetechie.blogspot.com/ Tech Blog]
|
Occasional updates regarding the development of my final year electronic engineering project: Very Low Power Wireless Sensor Networks. The MCU for the project is an MSP430 (by TI) and the wireless module is made by Nordic. Also, I may post random findings from modding/hacking hardware and general circuit design.



|-valign="top"
|
*Blog
|
[http://www.neufeld.newton.ks.us/electronics/ Keith’s Electronics Blog]
|
[[russ_hensel]] I do not like blogs much, too much look at me, not enough content ( IMHO ) but this seems very good.



|-valign="top"
|
*Blog
|
[http://blog.screamingcircuits.com/ Screaming Circuits]
|
Lots of tips on PCB design (and how things so often go wrong).

|-valign="top"
|
*Blog
*WebSite
|
[http://circuitcalculator.com/wordpress/ The CircuitCalculator.com Blog]
|
Several online JavaScript calculators relevant to PCB design

|-valign="top"
|
*Blog
*WebSite
|[http://www.ladyada.net/rant/ Ladyada’s Ranting]
|Well worth checking out, build some of her stuff and go to prison?

|-valign="top"
|
*Blog
|[http://blog.makezine.com/archive/open_source_hardware/ Blog Archive of Open Source Hardware]
|From the folks at Make


|-valign="top"
|
*Blog
*Wiki
|[http://www.nycresistor.com/ NYCResistor Blog] [http://wiki.nycresistor.com/wiki/Main_Page NYCResistor Wiki]
|NYCResistor is a hacker space based in NYC.

|-valign="top"
|
*Forum
*WebSite
|[http://forum.diyaudiotr.com/ DIY Audio Türkiye Forum] [http://www.diyaudiotr.com/ DIY Audio Türkiye]
|Turkish DIY Audio community website has great forum and projects.

|-valign="top"
|
*Blog
|
[http://www.roboops.es/ BoOpS’s Electronics & Robotics Blog]
|
Personal blog of a Spanish Student give schematics and code of her projects.

|-valign="top"
|
*WebSite
*Forum
*Gallery
*Blog
|[http://diyAudioProjects.com/ DIY Audio Projects] [http://www.diyAudioProjects.com/Forum/ DIY Audio Forum] [http://www.diyAudioProjects.com/Gallery/ DIY Audio Photo Gallery] [http://www.diyaudioprojects.blogspot.com/ DIY Audio Blog]
|DIY Audio Projects community websites that feature several fully documented diy audio projects, audio schematics, a photo gallery of projects and a message forum.

|-valign="top"
|
*Wiki
|[http://amateur-radio-wiki.net/index.php?title=Main_Page Amateur Radio Wiki]
|Online Encyclopedia for Hams

|-valign="top"
|
*WebSite
*Forum
|[http://DSminded.com/community DSminded.com - Mod it. Play it. Love it.]
|Games consoles modification site with forums, downloads, tutorials etc

|-valign="top"
|
*WebSite
* Blog
|[http://www.irblaster.info/blog/2007/04/lirc-on-router.html LIRC on a Router]
|Install LIRC on a DD WRT enabled router

|-valign="top"
|
*Forum
|[http://forum.allaboutcircuits.com/ All About Circuits]
|A quite active forum, plus an online book on electronics.

|-valign="top"
|
*Blog
*WebSite
|[http://www.circuitpeople.com CircuitPeople Gerber Viewer] 
[http://www.circuitpeople.com/Blog CircuitPeople Blog]
|A free gerber viewer that generates high-quality PNG images

|-valign="top"
|
*Blog
*WebSite
|[http://www.electronicwiki.com electronic-wiki] 
|A mix of Normal website and wiki engine that has all the information about chipdesign and semiconductor industry.
| I am open for any buisness and good idea you can contact me through this website/contact page.

|-valign="top"
|
*WebSite
|[http://littlebits.cc/ littleBits]
|"littleBits, a growing library of preassembled circuitboards, made easy by tiny magnets"

|-valign="top"
|
*WebSite
|[http://harkopen.com/ harkopen]
|"dedicated open hardware hosting"

|-valign="top"
|
*Blog
|[http://timewitharduino.blogspot.com/ timewitharduino]
|Arduino projects: Wiseduino, Wise Clock, Wise4Sure etc.

|-valign="top"
|
*Blog
|
[http://robozeal.blogspot.com Robotics INDIA: robozeal]
|
Basic electronic components.
Detailed description of the software and hardware interface to the [http://techref.massmind.org/techref/lcds.htm Hitachi controller] in most 2-line LCD displays.
Also: CELLPHONE OPERATED ROBOT.


|}

Page End

''FIXME: move wiki from this page to the [[WikiNode]].''

Oscilloscope

2009-10-19T16:44:17Z

Cov: /* Non-Free Software */

An '''oscilloscope''' (often abbreviated '''o'scope''' or '''scope''') displays signal voltages as a 2-D graph, usually as voltage (vertical axis) as a function of time (horizontal axis).

The ''probe'' of a o'scope is held against, or is clipped to, the metal wire carrying the signal of interest.

A '''dual-trace''' o'scope has 2 probes, so 2 different signals can be seen -- so not only the shape of the signal can be seen, but also the exact time from events on one signal to events on the other signal.

= Techniques =

Sometimes one wants to look at a 8-bit data bus -- typically one uses a "logic analyzer" to look at lots of time-aligned digital signals.
For a given number of signals to look at, oscilloscopes (which show the true analog waveform) are much more expensive than logic analyzers (which only show if a digital waveform is hi or low, above or below the logic threshold).
Many people buy both a (dual-trace) o'scope and a 16-trace logic analyzer, which together have a total cost less than one true 8-trace o'scope.

''... more techniques ...''

= Open Source Oscilloscopes =

Of course, you have to already have a working o'scope in order to build and test another o'scope, making this the same sort of chicken-and-egg problem as the [[Projects#RepRap | RepRap]] project, the [http://en.wikipedia.org/wiki/GNU_Compiler_Collection GCC project], and other projects David Cary finds interesting.

=PC Oscilloscopes=

==Open Hardware for PC Oscilloscopes==
===Bitscope===
* $550 BS100U: 2 analog inputs + 8 digital inputs, optically isolated, from BitScope Designs (MetaChip Pty. Ltd.) [http://bitscope.com/]

===MultiAnalyser===
Some people on the PIClist have been discussing designing an open-source oscilloscope.

* I think initial discussions occured on the [http://www.piclist.com/techref/postbot.asp?by=thread&id=%5BEE%5D+scope+project+anyone%3F&tgt=browse "[EE] scope project anyone?"] thread [http://www.piclist.com/techref/postbot.asp?by=time&id=piclist\2004\09\17\111014a.txt] at PIClist.
* Later discussion moved to the [http://tech.groups.yahoo.com/group/MultiAnalyser/ "MultiAnalyser" group at Yahoo]

==Closed, COTS Hardware for PC Oscilloscopes==
* Pretty much any sound card. Using an external sound card is recommended so you don't blow your on-board card or potentially other parts of your computer.

==PC Oscilloscope Software==

===Free Software===

* [http://sourceforge.net/projects/xoscope/ Sourceforge: xoscope] is a digital oscilloscope for Linux that uses input from a sound card or EsounD and/or a ProbeScope/osziFOX and will soon support Bitscope hardware.

===Non-Free Software===
* [http://www.baudline.com/what_is_baudline.html Baudline] is a signal analyzer designed for scientific visualization, using input from recorded data files or from a sound card. For Linux / Solaris. Freeware (no redistribution, no reverse engineering).
* [http://www.zelscope.com/ Zelscope] Converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter. Windows trialware.
* [http://www.bitscope.com/software/dso/ BitScope DSO] is a digital oscilloscope logic analyzer for Linux and Windows. It works with BitScope hardware and is distributed as freeware.

==Non-PC Oscilloscope Projects==
* [http://www.circuitcellar.com/archives/viewable/Zhang205/index.html "Handheld Multifunction Scope"] by Jingxi Zhang & Yang Zhang, 2007. "dual-channel oscilloscope supports 250 ksps for each channel". ... also: ohmmeter, capacitance meter, and inductance meter ... pulse generator ... small speaker and OLED output. All functions work stand-alone with OLED display, but it can also be to a host PC with the USB port to display waveforms on the PC display.
* [http://www.dansworkshop.com/electricity-and-electronics/homebuilt-oscilloscope.htm Dan's Workshop: Notes on converting that old compact tv set or computer monitor into an oscilloscope.]
* [http://www.intio.or.jp/jf10zl/tvosc.htm "TV Oscilloscope Adaptor"] "This ... adapter ... changes a TV to a Oscilloscope."

==Uncategorized==
* K3PTO http://www.qsl.net/k3pto/ 8 bit
* [http://massmind.org/techref/scenix/sxoscope/index.htm Massmind: "SX based O’Scope"] by Alberto Geraci of BTX Sistemas
* [http://www.semifluid.com/?p=9 "PIC12F675 Oscilloscope"]
* [http://zedomax.com/blog/2006/12/28/diy-hack-make-your-own-oscilloscope/ "DIY HACK - Make your own Oscilloscope"]
* [http://www.geocities.com/SiliconValley/Lakes/7156/articl3.htm "Solid State Oscilloscope"] by George Katz 1987 -- an extremely simple and small circuit that drives a 10 x 10 LED array. (Would it make sense to adapt the [[PointLess LED Array]] to be more like this?)

Epanorama has many links related to o'scopes and o'scope accessories [http://www.epanorama.net/links/measuring.html#oscilloscope].

==Oscilloscope Design Discussions==
*[http://www.edaboard.com/ftopic41841-30.html Digital oscilloscope Project] edaboard.com

== some low-cost oscilloscopes ==

some low-cost oscilloscopes, in no particular order.
''... it would be nice to mention # of analog input channels, # of digital input channels, whether it can be used under Linux, does it have output channels ... price should (?) include 2 analog probes, ... is it open hardware? ... anything else?''

* price name comments
* $349.95 VT DSO-2815H,1x150MHz or 2x75MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $299.95 VT DSO-2810H,1x100MHz or 2x50MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $250 VT DSO-2810F,2x100MHz, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
*$150 Poscope basic 2 from PoLabs [http://poscope.com/ PoLabs], 2 analog channels, 16/8 digital channels, PC USB oscilloscope, spectrum analyzer, chart recorder, pattern generator, logic analyzer, PWM/ square generator
* $420 PicoScope 2202 from [http://picotech.com/ Pico Technology]([http://www.picotech.com/picoscope-2202.html ])([http://www.interwld.com/pico/pico-3000.htm ])([http://www.pc-oscilloscopes.com/3000.htm])
* $200 Hantek DSO-2090 USB PC Oscilloscope [http://www.beigly.com/catalog/hantek-dso2090-oscilloscope-p-96.html]
* $380.00 DSO2250 100MHz PC-SCOPE 250MS/s [http://world-educational-services.net/cart/index.php?main_page=product_info&cPath=56&products_id=134&zenid=68c155f8ccc626c8d316e8417b32dc5d]
* CAN 219.99 Syscomp Electronic Design DSO-101 [http://syscompdesign.com/] (Syscomp supports the "[https://sourceforge.net/projects/oip The Open Instrumentation Project]" [http://syscompdesign.com/oip.htm])
* EUR 427 ETC s.r.o. M520 Oscilloscope [http://etcsk.com/]
* $222 ANT8 : 8 Channel Logic Analyzer (EasySync)[http://easysync-ltd.com/]
* $200 PS40M10 : Swordfish Hand-Held Instrument (1 channel) USB (EasySync)
* $220 DS1M12 : Stingray Multi-Function Instrument (2 channel) USB (EasySync)
* under $600 : [[Jameco]] has some actual stand-alone oscilloscopes for under $600. So does www.tequipment.com - see Rigol 'scopes from China - good quality - also on eBay.
* under $200 : Carl's Electronics has some stand-alone and PC-hosted (parallel port?) oscilloscopes for under $200.[http://www.electronickits.com/gold/gold.htm]
* $170 HobbyLab USB oscilloscope [http://hobbylab.us/USBOscilloscope/Home.htm]
* $500 DS1022C : 2 Channel, 25 MHz Rigol Technologies Inc.[http://rigolna.com/]
* $999 CS320A Cleverscope [http://cleverscope.com/] (has a discussion forum[http://cleverscope.com/forum/])
* $167 DrDAQ "data logger" (parallel port) from Pico Technology [http://www.drdaq.com/]
* $970 NI USB-5132 : USB digitizer from National Instruments [http://sine.ni.com/nips/cds/view/p/lang/en/nid/203719]
* $139 Parallax USB Oscilloscope 2 analog inputs + trigger; 1 MS/s [http://parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/txtSearch/28014/List/1/ProductID/46/Default.aspx?SortField=ProductName%2cProductName]
* $170 PC USB Oscilloscope DiSco (HobbyLab, LLC). 2 analog inputs ( 200 KHz ) + 16 digital inputs (or 8 digital inputs + 8 digital outputs). [http://hobbylab.us/]
* $150 ST16B 10 MHz stand-alone oscilloscope, 2 analog inputs [http://www.electronickits.com/gold/gold.htm]
* $190 VEPCS100 ( PCS100 ) - PC Based Oscilloscope; 1 analog input ( 12 MHz ); optically isolated from PC [http://www.electronickits.com/gold/gold.htm]
* $950 DSO-8502 USB Oscilloscope, 2 analog inputs (250MSa/s) + external trigger; 1 digital output (trigger out); buffer: 512K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $799 DSO-8202 USB Oscilloscope, 2 analog inputs (200MSa/s) + external trigger; 1 digital output (trigger out); buffer: 128K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $108 LabJack U3 USB data acquisition and control device, 16 analog inputs ( 12 bit, 2.5 KSa/s at 12 bit resolution, 50 KSa/s at 8 bit resolution), buffer: 984 samples, 2 analog outputs, digital outputs [http://www.labjack.com/labjack_u3.php]
* $249 S2X100 USB Oscillloscope, 2 analog inputs (100Ms/s) with 8 bit resolution, buffer: 64K samples [http://www.dynoninstruments.com/products_s2x100.php?gclid=CNzyz_625pgCFQIyxwodgwSvMA]
* $495 ELAB-080 [http://www.dynoninstruments.com/products_elab080.php]
* $745 USBee AX-Plus, 2 analog inputs (Max 16 MS/s ?) and 8 digital inputs [http://www.usbee.com/ax.html]

''FIXME: [http://measurementcomputing.com/cbicatalog/directory.asp?dept_id=403 Measurement Computing] has some wireless and USB analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.dataq.com/ DATAQ Instruments, Inc.] has some USB and Ethernet analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.designnotes.com/ DesignNotes.com, Inc.] has some USB and handheld LCD o'scopes from [http://www.velleman.be/ Velleman]: [http://www.vellemanusa.com/us/enu/product/list/?id=347914 Velleman oscilloscopes] -- add to the above list.''

''FIXME: [http://www.linkinstruments.com/oscilloscope.htm Link Instruments Inc.] has several USB o'scopes and "USB MSO" ("mixed signal o'scope"). Are they already listed above?''

EasySync[http://easysync-ltd.com/] is a distributor of RockyLogic's ANT8/etc products.

Test Equipment Solutions Today, Inc.[http://testsolu.com/] is a distributor of Rigol's DVM and oscilloscope products.

When you [http://search.ebay.com/search/search.dll?satitle=oscilloscope search eBay for oscilloscope], you might find some good deals.

== further reading ==

* other [[hardware tool | good equipment to buy when getting started]]

== external links ==

* [http://www.embedded.com/columns/breakpoint/160902529?printable=true "Scoping out palm-sized USB oscilloscopes"] by Jack Ganssle 2005, Embedded Systems Design. A review of 3 USB oscilloscopes -- reader comments at the end mention a few more USB o'scopes. ''(FIXME: make sure all the scopes mentioned are included on the above list)''
* Keith has made a list of [http://www.techtravels.org/amiga/amigablog/?p=167 "PC USB logic analyzers that cost under $1000."][http://www.techtravels.org/tech/logicanalyzer.html], some of which can be used as an o'scope. ''Should I use the same $1000 price cut-off for the above list? Or perhaps double or halve it?''
* Brooke Clarke has posted a list of [http://prc68.com/I/PCO.html "PC based Oscilloscopes"]
* [http://en.wikipedia.org/wiki/Oscilloscope Wikipedia: oscilloscope]
* Other discussions of [http://forums.reprap.org/read.php?13,5086 "Cheap digital storage oscilloscope"]
* [http://www.ganssle.com/microscopes.htm The Ganssle Group reviews Inexpensive USB Scopes and Logic Analyzers]
* [http://massmind.org/techref/tools.htm Massmind: Tools] lists a few sources for a variety of tools used in electronics: o'scopes, logic analyzers, meters, waveform generators, etc.
* [http://ask.slashdot.org/askslashdot/04/02/28/0041233.shtml Slashdot: "Cheap PC Oscilloscopes - Any Recommendations?"]
* [http://slashdot.org/askslashdot/01/12/07/191220.shtml Slashdot: "Building a Cheap Oscilloscope Using Your PC?"]
* [http://www.epanorama.net/links/measuring.html#pcmeasuring ePanorama.net: "Using PC as a measurement instrument"] ''(FIXME: anything we should add to the above list?)''

----
[[Category:Techniques]][[Category:Test Equipment]]

Oscilloscope

2009-10-19T16:40:57Z

Cov:

An '''oscilloscope''' (often abbreviated '''o'scope''' or '''scope''') displays signal voltages as a 2-D graph, usually as voltage (vertical axis) as a function of time (horizontal axis).

The ''probe'' of a o'scope is held against, or is clipped to, the metal wire carrying the signal of interest.

A '''dual-trace''' o'scope has 2 probes, so 2 different signals can be seen -- so not only the shape of the signal can be seen, but also the exact time from events on one signal to events on the other signal.

= Techniques =

Sometimes one wants to look at a 8-bit data bus -- typically one uses a "logic analyzer" to look at lots of time-aligned digital signals.
For a given number of signals to look at, oscilloscopes (which show the true analog waveform) are much more expensive than logic analyzers (which only show if a digital waveform is hi or low, above or below the logic threshold).
Many people buy both a (dual-trace) o'scope and a 16-trace logic analyzer, which together have a total cost less than one true 8-trace o'scope.

''... more techniques ...''

= Open Source Oscilloscopes =

Of course, you have to already have a working o'scope in order to build and test another o'scope, making this the same sort of chicken-and-egg problem as the [[Projects#RepRap | RepRap]] project, the [http://en.wikipedia.org/wiki/GNU_Compiler_Collection GCC project], and other projects David Cary finds interesting.

=PC Oscilloscopes=

==Open Hardware for PC Oscilloscopes==
===Bitscope===
* $550 BS100U: 2 analog inputs + 8 digital inputs, optically isolated, from BitScope Designs (MetaChip Pty. Ltd.) [http://bitscope.com/]

===MultiAnalyser===
Some people on the PIClist have been discussing designing an open-source oscilloscope.

* I think initial discussions occured on the [http://www.piclist.com/techref/postbot.asp?by=thread&id=%5BEE%5D+scope+project+anyone%3F&tgt=browse "[EE] scope project anyone?"] thread [http://www.piclist.com/techref/postbot.asp?by=time&id=piclist\2004\09\17\111014a.txt] at PIClist.
* Later discussion moved to the [http://tech.groups.yahoo.com/group/MultiAnalyser/ "MultiAnalyser" group at Yahoo]

==Closed, COTS Hardware for PC Oscilloscopes==
* Pretty much any sound card. Using an external sound card is recommended so you don't blow your on-board card or potentially other parts of your computer.

==PC Oscilloscope Software==

===Free Software===

* [http://sourceforge.net/projects/xoscope/ Sourceforge: xoscope] is a digital oscilloscope for Linux that uses input from a sound card or EsounD and/or a ProbeScope/osziFOX and will soon support Bitscope hardware.

===Non-Free Software===
* [http://www.baudline.com/what_is_baudline.html Baudline]is a signal analyzer designed for scientific visualization, using input from recorded data files or from a sound card. For Linux / Solaris. Freeware (no redistribution, no reverse engineering).
* [http://www.zelscope.com/ Zelscope] Converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter. Windows trialware.

==Non-PC Oscilloscope Projects==
* [http://www.circuitcellar.com/archives/viewable/Zhang205/index.html "Handheld Multifunction Scope"] by Jingxi Zhang & Yang Zhang, 2007. "dual-channel oscilloscope supports 250 ksps for each channel". ... also: ohmmeter, capacitance meter, and inductance meter ... pulse generator ... small speaker and OLED output. All functions work stand-alone with OLED display, but it can also be to a host PC with the USB port to display waveforms on the PC display.
* [http://www.dansworkshop.com/electricity-and-electronics/homebuilt-oscilloscope.htm Dan's Workshop: Notes on converting that old compact tv set or computer monitor into an oscilloscope.]
* [http://www.intio.or.jp/jf10zl/tvosc.htm "TV Oscilloscope Adaptor"] "This ... adapter ... changes a TV to a Oscilloscope."

==Uncategorized==
* K3PTO http://www.qsl.net/k3pto/ 8 bit
* [http://massmind.org/techref/scenix/sxoscope/index.htm Massmind: "SX based O’Scope"] by Alberto Geraci of BTX Sistemas
* [http://www.semifluid.com/?p=9 "PIC12F675 Oscilloscope"]
* [http://zedomax.com/blog/2006/12/28/diy-hack-make-your-own-oscilloscope/ "DIY HACK - Make your own Oscilloscope"]
* [http://www.geocities.com/SiliconValley/Lakes/7156/articl3.htm "Solid State Oscilloscope"] by George Katz 1987 -- an extremely simple and small circuit that drives a 10 x 10 LED array. (Would it make sense to adapt the [[PointLess LED Array]] to be more like this?)

Epanorama has many links related to o'scopes and o'scope accessories [http://www.epanorama.net/links/measuring.html#oscilloscope].

==Oscilloscope Design Discussions==
*[http://www.edaboard.com/ftopic41841-30.html Digital oscilloscope Project] edaboard.com

== some low-cost oscilloscopes ==

some low-cost oscilloscopes, in no particular order.
''... it would be nice to mention # of analog input channels, # of digital input channels, whether it can be used under Linux, does it have output channels ... price should (?) include 2 analog probes, ... is it open hardware? ... anything else?''

* price name comments
* $349.95 VT DSO-2815H,1x150MHz or 2x75MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $299.95 VT DSO-2810H,1x100MHz or 2x50MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $250 VT DSO-2810F,2x100MHz, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
*$150 Poscope basic 2 from PoLabs [http://poscope.com/ PoLabs], 2 analog channels, 16/8 digital channels, PC USB oscilloscope, spectrum analyzer, chart recorder, pattern generator, logic analyzer, PWM/ square generator
* $420 PicoScope 2202 from [http://picotech.com/ Pico Technology]([http://www.picotech.com/picoscope-2202.html ])([http://www.interwld.com/pico/pico-3000.htm ])([http://www.pc-oscilloscopes.com/3000.htm])
* $200 Hantek DSO-2090 USB PC Oscilloscope [http://www.beigly.com/catalog/hantek-dso2090-oscilloscope-p-96.html]
* $380.00 DSO2250 100MHz PC-SCOPE 250MS/s [http://world-educational-services.net/cart/index.php?main_page=product_info&cPath=56&products_id=134&zenid=68c155f8ccc626c8d316e8417b32dc5d]
* CAN 219.99 Syscomp Electronic Design DSO-101 [http://syscompdesign.com/] (Syscomp supports the "[https://sourceforge.net/projects/oip The Open Instrumentation Project]" [http://syscompdesign.com/oip.htm])
* EUR 427 ETC s.r.o. M520 Oscilloscope [http://etcsk.com/]
* $222 ANT8 : 8 Channel Logic Analyzer (EasySync)[http://easysync-ltd.com/]
* $200 PS40M10 : Swordfish Hand-Held Instrument (1 channel) USB (EasySync)
* $220 DS1M12 : Stingray Multi-Function Instrument (2 channel) USB (EasySync)
* under $600 : [[Jameco]] has some actual stand-alone oscilloscopes for under $600. So does www.tequipment.com - see Rigol 'scopes from China - good quality - also on eBay.
* under $200 : Carl's Electronics has some stand-alone and PC-hosted (parallel port?) oscilloscopes for under $200.[http://www.electronickits.com/gold/gold.htm]
* $170 HobbyLab USB oscilloscope [http://hobbylab.us/USBOscilloscope/Home.htm]
* $500 DS1022C : 2 Channel, 25 MHz Rigol Technologies Inc.[http://rigolna.com/]
* $999 CS320A Cleverscope [http://cleverscope.com/] (has a discussion forum[http://cleverscope.com/forum/])
* $167 DrDAQ "data logger" (parallel port) from Pico Technology [http://www.drdaq.com/]
* $970 NI USB-5132 : USB digitizer from National Instruments [http://sine.ni.com/nips/cds/view/p/lang/en/nid/203719]
* $139 Parallax USB Oscilloscope 2 analog inputs + trigger; 1 MS/s [http://parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/txtSearch/28014/List/1/ProductID/46/Default.aspx?SortField=ProductName%2cProductName]
* $170 PC USB Oscilloscope DiSco (HobbyLab, LLC). 2 analog inputs ( 200 KHz ) + 16 digital inputs (or 8 digital inputs + 8 digital outputs). [http://hobbylab.us/]
* $150 ST16B 10 MHz stand-alone oscilloscope, 2 analog inputs [http://www.electronickits.com/gold/gold.htm]
* $190 VEPCS100 ( PCS100 ) - PC Based Oscilloscope; 1 analog input ( 12 MHz ); optically isolated from PC [http://www.electronickits.com/gold/gold.htm]
* $950 DSO-8502 USB Oscilloscope, 2 analog inputs (250MSa/s) + external trigger; 1 digital output (trigger out); buffer: 512K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $799 DSO-8202 USB Oscilloscope, 2 analog inputs (200MSa/s) + external trigger; 1 digital output (trigger out); buffer: 128K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $108 LabJack U3 USB data acquisition and control device, 16 analog inputs ( 12 bit, 2.5 KSa/s at 12 bit resolution, 50 KSa/s at 8 bit resolution), buffer: 984 samples, 2 analog outputs, digital outputs [http://www.labjack.com/labjack_u3.php]
* $249 S2X100 USB Oscillloscope, 2 analog inputs (100Ms/s) with 8 bit resolution, buffer: 64K samples [http://www.dynoninstruments.com/products_s2x100.php?gclid=CNzyz_625pgCFQIyxwodgwSvMA]
* $495 ELAB-080 [http://www.dynoninstruments.com/products_elab080.php]
* $745 USBee AX-Plus, 2 analog inputs (Max 16 MS/s ?) and 8 digital inputs [http://www.usbee.com/ax.html]

''FIXME: [http://measurementcomputing.com/cbicatalog/directory.asp?dept_id=403 Measurement Computing] has some wireless and USB analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.dataq.com/ DATAQ Instruments, Inc.] has some USB and Ethernet analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.designnotes.com/ DesignNotes.com, Inc.] has some USB and handheld LCD o'scopes from [http://www.velleman.be/ Velleman]: [http://www.vellemanusa.com/us/enu/product/list/?id=347914 Velleman oscilloscopes] -- add to the above list.''

''FIXME: [http://www.linkinstruments.com/oscilloscope.htm Link Instruments Inc.] has several USB o'scopes and "USB MSO" ("mixed signal o'scope"). Are they already listed above?''

EasySync[http://easysync-ltd.com/] is a distributor of RockyLogic's ANT8/etc products.

Test Equipment Solutions Today, Inc.[http://testsolu.com/] is a distributor of Rigol's DVM and oscilloscope products.

When you [http://search.ebay.com/search/search.dll?satitle=oscilloscope search eBay for oscilloscope], you might find some good deals.

== further reading ==

* other [[hardware tool | good equipment to buy when getting started]]

== external links ==

* [http://www.embedded.com/columns/breakpoint/160902529?printable=true "Scoping out palm-sized USB oscilloscopes"] by Jack Ganssle 2005, Embedded Systems Design. A review of 3 USB oscilloscopes -- reader comments at the end mention a few more USB o'scopes. ''(FIXME: make sure all the scopes mentioned are included on the above list)''
* Keith has made a list of [http://www.techtravels.org/amiga/amigablog/?p=167 "PC USB logic analyzers that cost under $1000."][http://www.techtravels.org/tech/logicanalyzer.html], some of which can be used as an o'scope. ''Should I use the same $1000 price cut-off for the above list? Or perhaps double or halve it?''
* Brooke Clarke has posted a list of [http://prc68.com/I/PCO.html "PC based Oscilloscopes"]
* [http://en.wikipedia.org/wiki/Oscilloscope Wikipedia: oscilloscope]
* Other discussions of [http://forums.reprap.org/read.php?13,5086 "Cheap digital storage oscilloscope"]
* [http://www.ganssle.com/microscopes.htm The Ganssle Group reviews Inexpensive USB Scopes and Logic Analyzers]
* [http://massmind.org/techref/tools.htm Massmind: Tools] lists a few sources for a variety of tools used in electronics: o'scopes, logic analyzers, meters, waveform generators, etc.
* [http://ask.slashdot.org/askslashdot/04/02/28/0041233.shtml Slashdot: "Cheap PC Oscilloscopes - Any Recommendations?"]
* [http://slashdot.org/askslashdot/01/12/07/191220.shtml Slashdot: "Building a Cheap Oscilloscope Using Your PC?"]
* [http://www.epanorama.net/links/measuring.html#pcmeasuring ePanorama.net: "Using PC as a measurement instrument"] ''(FIXME: anything we should add to the above list?)''

----
[[Category:Techniques]][[Category:Test Equipment]]

Oscilloscope

2009-10-19T16:37:35Z

Cov: /* open source oscilloscopes */

An '''oscilloscope''' (often abbreviated '''o'scope''' or '''scope''') displays signal voltages as a 2-D graph, usually as voltage (vertical axis) as a function of time (horizontal axis).

The ''probe'' of a o'scope is held against, or is clipped to, the metal wire carrying the signal of interest.

A '''dual-trace''' o'scope has 2 probes, so 2 different signals can be seen -- so not only the shape of the signal can be seen, but also the exact time from events on one signal to events on the other signal.

== techniques ==

Sometimes one wants to look at a 8-bit data bus -- typically one uses a "logic analyzer" to look at lots of time-aligned digital signals.
For a given number of signals to look at, oscilloscopes (which show the true analog waveform) are much more expensive than logic analyzers (which only show if a digital waveform is hi or low, above or below the logic threshold).
Many people buy both a (dual-trace) o'scope and a 16-trace logic analyzer, which together have a total cost less than one true 8-trace o'scope.

''... more techniques ...''

== open source oscilloscopes ==

Of course, you have to already have a working o'scope in order to build and test another o'scope, making this the same sort of chicken-and-egg problem as the [[Projects#RepRap | RepRap]] project, the [http://en.wikipedia.org/wiki/GNU_Compiler_Collection GCC project], and other projects David Cary finds interesting.

==PC Oscilloscopes==

===Open Hardware for PC Oscilloscopes===
====Bitscope====
* $550 BS100U: 2 analog inputs + 8 digital inputs, optically isolated, from BitScope Designs (MetaChip Pty. Ltd.) [http://bitscope.com/]

====MultiAnalyser====
Some people on the PIClist have been discussing designing an open-source oscilloscope.

* I think initial discussions occured on the [http://www.piclist.com/techref/postbot.asp?by=thread&id=%5BEE%5D+scope+project+anyone%3F&tgt=browse "[EE] scope project anyone?"] thread [http://www.piclist.com/techref/postbot.asp?by=time&id=piclist\2004\09\17\111014a.txt] at PIClist.
* Later discussion moved to the [http://tech.groups.yahoo.com/group/MultiAnalyser/ "MultiAnalyser" group at Yahoo]

===Closed, COTS Hardware for PC Oscilloscopes===
* Pretty much any sound card. Using an external sound card is recommended so you don't blow your on-board card or potentially other parts of your computer.

===PC Oscilloscope Software===

====Free Software====

* [http://sourceforge.net/projects/xoscope/ Sourceforge: xoscope] is a digital oscilloscope using input from a sound card or EsounD and/or a ProbeScope/osziFOX and will soon support Bitscope hardware.

==Non-PC Oscilloscope Projects==
* [http://www.circuitcellar.com/archives/viewable/Zhang205/index.html "Handheld Multifunction Scope"] by Jingxi Zhang & Yang Zhang, 2007. "dual-channel oscilloscope supports 250 ksps for each channel". ... also: ohmmeter, capacitance meter, and inductance meter ... pulse generator ... small speaker and OLED output. All functions work stand-alone with OLED display, but it can also be to a host PC with the USB port to display waveforms on the PC display.
* [http://www.dansworkshop.com/electricity-and-electronics/homebuilt-oscilloscope.htm Dan's Workshop: Notes on converting that old compact tv set or computer monitor into an oscilloscope.]
* [http://www.intio.or.jp/jf10zl/tvosc.htm "TV Oscilloscope Adaptor"] "This ... adapter ... changes a TV to a Oscilloscope."

==Uncategorized==
* K3PTO http://www.qsl.net/k3pto/ 8 bit
* [http://massmind.org/techref/scenix/sxoscope/index.htm Massmind: "SX based O’Scope"] by Alberto Geraci of BTX Sistemas
* [http://www.semifluid.com/?p=9 "PIC12F675 Oscilloscope"]
* [http://zedomax.com/blog/2006/12/28/diy-hack-make-your-own-oscilloscope/ "DIY HACK - Make your own Oscilloscope"]
* [http://www.geocities.com/SiliconValley/Lakes/7156/articl3.htm "Solid State Oscilloscope"] by George Katz 1987 -- an extremely simple and small circuit that drives a 10 x 10 LED array. (Would it make sense to adapt the [[PointLess LED Array]] to be more like this?)

Epanorama has many links related to o'scopes and o'scope accessories [http://www.epanorama.net/links/measuring.html#oscilloscope].

==Oscilloscope Design Discussions==
*[http://www.edaboard.com/ftopic41841-30.html Digital oscilloscope Project] edaboard.com

== Closed Source PC Oscilloscopes ==
* [http://www.baudline.com/what_is_baudline.html Baudline]is a signal analyzer designed for scientific visualization, using input from recorded data files or from a sound card. For Linux / Solaris. Freeware (no redistribution, no reverse engineering).
* [http://www.zelscope.com/ Zelscope] Converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter. Windows trialware.

== some low-cost oscilloscopes ==

some low-cost oscilloscopes, in no particular order.
''... it would be nice to mention # of analog input channels, # of digital input channels, whether it can be used under Linux, does it have output channels ... price should (?) include 2 analog probes, ... is it open hardware? ... anything else?''

* price name comments
* $349.95 VT DSO-2815H,1x150MHz or 2x75MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $299.95 VT DSO-2810H,1x100MHz or 2x50MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $250 VT DSO-2810F,2x100MHz, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
*$150 Poscope basic 2 from PoLabs [http://poscope.com/ PoLabs], 2 analog channels, 16/8 digital channels, PC USB oscilloscope, spectrum analyzer, chart recorder, pattern generator, logic analyzer, PWM/ square generator
* $420 PicoScope 2202 from [http://picotech.com/ Pico Technology]([http://www.picotech.com/picoscope-2202.html ])([http://www.interwld.com/pico/pico-3000.htm ])([http://www.pc-oscilloscopes.com/3000.htm])
* $200 Hantek DSO-2090 USB PC Oscilloscope [http://www.beigly.com/catalog/hantek-dso2090-oscilloscope-p-96.html]
* $380.00 DSO2250 100MHz PC-SCOPE 250MS/s [http://world-educational-services.net/cart/index.php?main_page=product_info&cPath=56&products_id=134&zenid=68c155f8ccc626c8d316e8417b32dc5d]
* CAN 219.99 Syscomp Electronic Design DSO-101 [http://syscompdesign.com/] (Syscomp supports the "[https://sourceforge.net/projects/oip The Open Instrumentation Project]" [http://syscompdesign.com/oip.htm])
* EUR 427 ETC s.r.o. M520 Oscilloscope [http://etcsk.com/]
* $222 ANT8 : 8 Channel Logic Analyzer (EasySync)[http://easysync-ltd.com/]
* $200 PS40M10 : Swordfish Hand-Held Instrument (1 channel) USB (EasySync)
* $220 DS1M12 : Stingray Multi-Function Instrument (2 channel) USB (EasySync)
* under $600 : [[Jameco]] has some actual stand-alone oscilloscopes for under $600. So does www.tequipment.com - see Rigol 'scopes from China - good quality - also on eBay.
* under $200 : Carl's Electronics has some stand-alone and PC-hosted (parallel port?) oscilloscopes for under $200.[http://www.electronickits.com/gold/gold.htm]
* $170 HobbyLab USB oscilloscope [http://hobbylab.us/USBOscilloscope/Home.htm]
* $500 DS1022C : 2 Channel, 25 MHz Rigol Technologies Inc.[http://rigolna.com/]
* $999 CS320A Cleverscope [http://cleverscope.com/] (has a discussion forum[http://cleverscope.com/forum/])
* $167 DrDAQ "data logger" (parallel port) from Pico Technology [http://www.drdaq.com/]
* $970 NI USB-5132 : USB digitizer from National Instruments [http://sine.ni.com/nips/cds/view/p/lang/en/nid/203719]
* $139 Parallax USB Oscilloscope 2 analog inputs + trigger; 1 MS/s [http://parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/txtSearch/28014/List/1/ProductID/46/Default.aspx?SortField=ProductName%2cProductName]
* $170 PC USB Oscilloscope DiSco (HobbyLab, LLC). 2 analog inputs ( 200 KHz ) + 16 digital inputs (or 8 digital inputs + 8 digital outputs). [http://hobbylab.us/]
* $150 ST16B 10 MHz stand-alone oscilloscope, 2 analog inputs [http://www.electronickits.com/gold/gold.htm]
* $190 VEPCS100 ( PCS100 ) - PC Based Oscilloscope; 1 analog input ( 12 MHz ); optically isolated from PC [http://www.electronickits.com/gold/gold.htm]
* $950 DSO-8502 USB Oscilloscope, 2 analog inputs (250MSa/s) + external trigger; 1 digital output (trigger out); buffer: 512K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $799 DSO-8202 USB Oscilloscope, 2 analog inputs (200MSa/s) + external trigger; 1 digital output (trigger out); buffer: 128K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $108 LabJack U3 USB data acquisition and control device, 16 analog inputs ( 12 bit, 2.5 KSa/s at 12 bit resolution, 50 KSa/s at 8 bit resolution), buffer: 984 samples, 2 analog outputs, digital outputs [http://www.labjack.com/labjack_u3.php]
* $249 S2X100 USB Oscillloscope, 2 analog inputs (100Ms/s) with 8 bit resolution, buffer: 64K samples [http://www.dynoninstruments.com/products_s2x100.php?gclid=CNzyz_625pgCFQIyxwodgwSvMA]
* $495 ELAB-080 [http://www.dynoninstruments.com/products_elab080.php]
* $745 USBee AX-Plus, 2 analog inputs (Max 16 MS/s ?) and 8 digital inputs [http://www.usbee.com/ax.html]

''FIXME: [http://measurementcomputing.com/cbicatalog/directory.asp?dept_id=403 Measurement Computing] has some wireless and USB analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.dataq.com/ DATAQ Instruments, Inc.] has some USB and Ethernet analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.designnotes.com/ DesignNotes.com, Inc.] has some USB and handheld LCD o'scopes from [http://www.velleman.be/ Velleman]: [http://www.vellemanusa.com/us/enu/product/list/?id=347914 Velleman oscilloscopes] -- add to the above list.''

''FIXME: [http://www.linkinstruments.com/oscilloscope.htm Link Instruments Inc.] has several USB o'scopes and "USB MSO" ("mixed signal o'scope"). Are they already listed above?''

EasySync[http://easysync-ltd.com/] is a distributor of RockyLogic's ANT8/etc products.

Test Equipment Solutions Today, Inc.[http://testsolu.com/] is a distributor of Rigol's DVM and oscilloscope products.

When you [http://search.ebay.com/search/search.dll?satitle=oscilloscope search eBay for oscilloscope], you might find some good deals.

== further reading ==

* other [[hardware tool | good equipment to buy when getting started]]

== external links ==

* [http://www.embedded.com/columns/breakpoint/160902529?printable=true "Scoping out palm-sized USB oscilloscopes"] by Jack Ganssle 2005, Embedded Systems Design. A review of 3 USB oscilloscopes -- reader comments at the end mention a few more USB o'scopes. ''(FIXME: make sure all the scopes mentioned are included on the above list)''
* Keith has made a list of [http://www.techtravels.org/amiga/amigablog/?p=167 "PC USB logic analyzers that cost under $1000."][http://www.techtravels.org/tech/logicanalyzer.html], some of which can be used as an o'scope. ''Should I use the same $1000 price cut-off for the above list? Or perhaps double or halve it?''
* Brooke Clarke has posted a list of [http://prc68.com/I/PCO.html "PC based Oscilloscopes"]
* [http://en.wikipedia.org/wiki/Oscilloscope Wikipedia: oscilloscope]
* Other discussions of [http://forums.reprap.org/read.php?13,5086 "Cheap digital storage oscilloscope"]
* [http://www.ganssle.com/microscopes.htm The Ganssle Group reviews Inexpensive USB Scopes and Logic Analyzers]
* [http://massmind.org/techref/tools.htm Massmind: Tools] lists a few sources for a variety of tools used in electronics: o'scopes, logic analyzers, meters, waveform generators, etc.
* [http://ask.slashdot.org/askslashdot/04/02/28/0041233.shtml Slashdot: "Cheap PC Oscilloscopes - Any Recommendations?"]
* [http://slashdot.org/askslashdot/01/12/07/191220.shtml Slashdot: "Building a Cheap Oscilloscope Using Your PC?"]
* [http://www.epanorama.net/links/measuring.html#pcmeasuring ePanorama.net: "Using PC as a measurement instrument"] ''(FIXME: anything we should add to the above list?)''

----
[[Category:Techniques]][[Category:Test Equipment]]

Got A Blog, Wiki or Website?

2009-10-19T16:14:37Z

Cov: /* Wiki Members Links */

Do you know an electronics-related wiki? Link to it on the [[WikiNode]] page.

Member of this Wiki and got a Blog or Website? Link to it on this "Got A Blog, Wiki or Website?" page:

Note that there are template enteries that can make editing easier.

At the bottom of the page is a section for non member, but member recommended sites.

== Wiki Members Links ==

{| class="wikitable"
|-valign="top"
! What
! Link
! Comment


|-valign="top"
|
*WebSite
|
[http://millpcbs.com/ Millpcbs.com]
|A website dedicated to milling PCB's and the DIY machines to accomplish it.

|-valign="top"
|
*WebSite
|
[http://pminmo.com/ PMinMO.com]
|A website dedicated to DIY CNC electronics.


|-valign="top"
|
*Blog
|
[http://www.paleotechnologist.net Paleotechnologist.Net]
|A blog exploring ways to blend old-school and new-school technology.


|-valign="top"
|
*WebSite
|
[http://www.gadgetgangster.com Gadget Gangster]
|A site to publish and sell your electronics projects

|-valign="top"
|
*WebSite
|[http://meaning.com/wiki/Rubisync Rubisync]
|Open Source Synchronized Magnetometers


|-valign="top"
|
* WebSite
* Blog
* Forum
* Wiki
|
[http://vtluug.org Linux and Unix Users Group at Virginia Tech]
|The Linux and Unix Users Group at Virginia Tech's membership is made up primarily of Computer and Electrical Engineering students. An ongoing project of theirs is to develop and document FOSS workflows that can eventually completely replace the current dependencies on PSpice, LogicWorks and MATLAB.

|}

== Non Members Links ==

Found a Blog or Website that is so general that it does not fit well into the structure of this site? If you think it is so good that you are willing to sign your recommendation then list it here.

{| class="wikitable"
|-valign="top"
! What
! Link
! Comment


|-valign="top"
|
*WebSite
|[http://www.amplifiersite.com/ Amplifier types] 
|Dick's website about the most common amplifier types. Links to other sites are provided as well.



|-valign="top"
|
*WebSite
*Blog
*Wiki
|[http://jeffrey.co.in/ Jeffrey's Website] [http://jeffrey.co.in/blog Jeffrey's Blog ] [http://jeffrey.co.in/wiki Jay Free Wiki for tutorials]
|Jeffrey's website for Open Hardware and Free Software. Find a lot on electronics tutorials, open hardware, GNU/Linux...



|-valign="top"
|
*Blog
|
[http://samthetechie.blogspot.com/ Tech Blog]
|
Occasional updates regarding the development of my final year electronic engineering project: Very Low Power Wireless Sensor Networks. The MCU for the project is an MSP430 (by TI) and the wireless module is made by Nordic. Also, I may post random findings from modding/hacking hardware and general circuit design.



|-valign="top"
|
*Blog
|
[http://www.neufeld.newton.ks.us/electronics/ Keith’s Electronics Blog]
|
[[russ_hensel]] I do not like blogs much, too much look at me, not enough content ( IMHO ) but this seems very good.



|-valign="top"
|
*Blog
|
[http://blog.screamingcircuits.com/ Screaming Circuits]
|
Lots of tips on PCB design (and how things so often go wrong).

|-valign="top"
|
*Blog
*WebSite
|
[http://circuitcalculator.com/wordpress/ The CircuitCalculator.com Blog]
|
Several online JavaScript calculators relevant to PCB design

|-valign="top"
|
*Blog
*WebSite
|[http://www.ladyada.net/rant/ Ladyada’s Ranting]
|Well worth checking out, build some of her stuff and go to prison?

|-valign="top"
|
*Blog
|[http://blog.makezine.com/archive/open_source_hardware/ Blog Archive of Open Source Hardware]
|From the folks at Make


|-valign="top"
|
*Blog
*Wiki
|[http://www.nycresistor.com/ NYCResistor Blog] [http://wiki.nycresistor.com/wiki/Main_Page NYCResistor Wiki]
|NYCResistor is a hacker space based in NYC.

|-valign="top"
|
*Forum
*WebSite
|[http://forum.diyaudiotr.com/ DIY Audio Türkiye Forum] [http://www.diyaudiotr.com/ DIY Audio Türkiye]
|Turkish DIY Audio community website has great forum and projects.

|-valign="top"
|
*Blog
|
[http://www.roboops.es/ BoOpS’s Electronics & Robotics Blog]
|
Personal blog of a Spanish Student give schematics and code of her projects.

|-valign="top"
|
*WebSite
*Forum
*Gallery
*Blog
|[http://diyAudioProjects.com/ DIY Audio Projects] [http://www.diyAudioProjects.com/Forum/ DIY Audio Forum] [http://www.diyAudioProjects.com/Gallery/ DIY Audio Photo Gallery] [http://www.diyaudioprojects.blogspot.com/ DIY Audio Blog]
|DIY Audio Projects community websites that feature several fully documented diy audio projects, audio schematics, a photo gallery of projects and a message forum.

|-valign="top"
|
*Wiki
|[http://amateur-radio-wiki.net/index.php?title=Main_Page Amateur Radio Wiki]
|Online Encyclopedia for Hams

|-valign="top"
|
*WebSite
*Forum
|[http://DSminded.com/community DSminded.com - Mod it. Play it. Love it.]
|Games consoles modification site with forums, downloads, tutorials etc

|-valign="top"
|
*WebSite
* Blog
|[http://www.irblaster.info/blog/2007/04/lirc-on-router.html LIRC on a Router]
|Install LIRC on a DD WRT enabled router

|-valign="top"
|
*Forum
|[http://forum.allaboutcircuits.com/ All About Circuits]
|A quite active forum, plus an online book on electronics.

|-valign="top"
|
*Blog
*WebSite
|[http://www.circuitpeople.com CircuitPeople Gerber Viewer] 
[http://www.circuitpeople.com/Blog CircuitPeople Blog]
|A free gerber viewer that generates high-quality PNG images

|-valign="top"
|
*Blog
*WebSite
|[http://www.electronicwiki.com electronic-wiki] 
|A mix of Normal website and wiki engine that has all the information about chipdesign and semiconductor industry.
| I am open for any buisness and good idea you can contact me through this website/contact page.

|-valign="top"
|
*WebSite
|[http://littlebits.cc/ littleBits]
|"littleBits, a growing library of preassembled circuitboards, made easy by tiny magnets"

|-valign="top"
|
*WebSite
|[http://harkopen.com/ harkopen]
|"dedicated open hardware hosting"

|-valign="top"
|
*Blog
|[http://timewitharduino.blogspot.com/ timewitharduino]
|Arduino projects: Wiseduino, Wise Clock, Wise4Sure etc.

|-valign="top"
|
*Blog
|
[http://robozeal.blogspot.com Robotics INDIA: robozeal]
|
Basic electronic components.
Detailed description of the software and hardware interface to the [http://techref.massmind.org/techref/lcds.htm Hitachi controller] in most 2-line LCD displays.
Also: CELLPHONE OPERATED ROBOT.


|}

Page End

''FIXME: move wiki from this page to the [[WikiNode]].''

Oscilloscope

2009-10-19T16:00:19Z

Cov:

An '''oscilloscope''' (often abbreviated '''o'scope''' or '''scope''') displays signal voltages as a 2-D graph, usually as voltage (vertical axis) as a function of time (horizontal axis).

The ''probe'' of a o'scope is held against, or is clipped to, the metal wire carrying the signal of interest.

A '''dual-trace''' o'scope has 2 probes, so 2 different signals can be seen -- so not only the shape of the signal can be seen, but also the exact time from events on one signal to events on the other signal.

== techniques ==

Sometimes one wants to look at a 8-bit data bus -- typically one uses a "logic analyzer" to look at lots of time-aligned digital signals.
For a given number of signals to look at, oscilloscopes (which show the true analog waveform) are much more expensive than logic analyzers (which only show if a digital waveform is hi or low, above or below the logic threshold).
Many people buy both a (dual-trace) o'scope and a 16-trace logic analyzer, which together have a total cost less than one true 8-trace o'scope.

''... more techniques ...''

== open source oscilloscopes ==

Of course, you have to already have a working o'scope in order to build and test another o'scope, making this the same sort of chicken-and-egg problem as the [[Projects#RepRap | RepRap]] project, the [http://en.wikipedia.org/wiki/GNU_Compiler_Collection GCC project], and other projects David Cary finds interesting.

=== open source oscilloscope: BitScope ===

* $550 BS100U: 2 analog inputs + 8 digital inputs, optically isolated, from BitScope Designs (MetaChip Pty. Ltd.) [http://bitscope.com/]. ("Scopal" third-party software is available[http://scopal.com/]). (open hardware).

=== open source oscilloscope: the MultiAnalyser ===

Some people on the PIClist have been discussing designing an open-source oscilloscope.

* I think initial discussions occured on the [http://www.piclist.com/techref/postbot.asp?by=thread&id=%5BEE%5D+scope+project+anyone%3F&tgt=browse "[EE] scope project anyone?"] thread [http://www.piclist.com/techref/postbot.asp?by=time&id=piclist\2004\09\17\111014a.txt] at PIClist.
* Later discussion moved to the [http://tech.groups.yahoo.com/group/MultiAnalyser/ "MultiAnalyser" group at Yahoo]

=== are these open-source? ===

''(FIXME: get sampling rate and resolution)''
* K3PTO http://www.qsl.net/k3pto/ 8 bit
* [http://massmind.org/techref/scenix/sxoscope/index.htm Massmind: "SX based O’Scope"] by Alberto Geraci of BTX Sistemas
* [http://sourceforge.net/projects/xoscope/ Sourceforge: xoscope] is a digital oscilloscope using input from a sound card or EsounD and/or a ProbeScope/osziFOX and will soon support Bitscope hardware.
* [http://www.semifluid.com/?p=9 "PIC12F675 Oscilloscope"]
* [http://zedomax.com/blog/2006/12/28/diy-hack-make-your-own-oscilloscope/ "DIY HACK - Make your own Oscilloscope"]
* [http://www.circuitcellar.com/archives/viewable/Zhang205/index.html "Handheld Multifunction Scope"] by Jingxi Zhang & Yang Zhang, 2007. "dual-channel oscilloscope supports 250 ksps for each channel". ... also: ohmmeter, capacitance meter, and inductance meter ... pulse generator ... small speaker and OLED output. All functions work stand-alone with OLED display, but it can also be to a host PC with the USB port to display waveforms on the PC display.
* [http://www.dansworkshop.com/electricity-and-electronics/homebuilt-oscilloscope.htm Dan's Workshop: Notes on converting that old compact tv set or computer monitor into an oscilloscope.]
* [http://www.intio.or.jp/jf10zl/tvosc.htm "TV Oscilloscope Adaptor"] "This ... adapter ... changes a TV to a Oscilloscope."
* [http://www.geocities.com/SiliconValley/Lakes/7156/articl3.htm "Solid State Oscilloscope"] by George Katz 1987 -- an extremely simple and small circuit that drives a 10 x 10 LED array. (Would it make sense to adapt the [[PointLess LED Array]] to be more like this?)

Epanorama has many links related to o'scopes and o'scope accessories [http://www.epanorama.net/links/measuring.html#oscilloscope].

===Oscilloscope Design Discussions===
*[http://www.edaboard.com/ftopic41841-30.html Digital oscilloscope Project] edaboard.com

== Closed Source PC Oscilloscopes ==
* [http://www.baudline.com/what_is_baudline.html Baudline]is a signal analyzer designed for scientific visualization, using input from recorded data files or from a sound card. For Linux / Solaris. Freeware (no redistribution, no reverse engineering).
* [http://www.zelscope.com/ Zelscope] Converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter. Windows trialware.

== some low-cost oscilloscopes ==

some low-cost oscilloscopes, in no particular order.
''... it would be nice to mention # of analog input channels, # of digital input channels, whether it can be used under Linux, does it have output channels ... price should (?) include 2 analog probes, ... is it open hardware? ... anything else?''

* price name comments
* $349.95 VT DSO-2815H,1x150MHz or 2x75MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $299.95 VT DSO-2810H,1x100MHz or 2x50MHz,sophisticated trigger functions, a wide range of gain selection, 1kHz squarewave output, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
* $250 VT DSO-2810F,2x100MHz, with a Multi-Instrument Standard software license, which converts a PC into oscilloscope, spectrum analyzer, multimeter, signal generator, data logger...it also supports sound card (both MME driver and ASIO driver), NI DAQmx cards, etc. [http://www.multi-instrument.com/] The software can be downloaded for 21-day fully functional trial with at least sound card at [http://www.multi-instrument.com/MIsetup.zip]
*$150 Poscope basic 2 from PoLabs [http://poscope.com/ PoLabs], 2 analog channels, 16/8 digital channels, PC USB oscilloscope, spectrum analyzer, chart recorder, pattern generator, logic analyzer, PWM/ square generator
* $420 PicoScope 2202 from [http://picotech.com/ Pico Technology]([http://www.picotech.com/picoscope-2202.html ])([http://www.interwld.com/pico/pico-3000.htm ])([http://www.pc-oscilloscopes.com/3000.htm])
* $200 Hantek DSO-2090 USB PC Oscilloscope [http://www.beigly.com/catalog/hantek-dso2090-oscilloscope-p-96.html]
* $380.00 DSO2250 100MHz PC-SCOPE 250MS/s [http://world-educational-services.net/cart/index.php?main_page=product_info&cPath=56&products_id=134&zenid=68c155f8ccc626c8d316e8417b32dc5d]
* CAN 219.99 Syscomp Electronic Design DSO-101 [http://syscompdesign.com/] (Syscomp supports the "[https://sourceforge.net/projects/oip The Open Instrumentation Project]" [http://syscompdesign.com/oip.htm])
* EUR 427 ETC s.r.o. M520 Oscilloscope [http://etcsk.com/]
* $222 ANT8 : 8 Channel Logic Analyzer (EasySync)[http://easysync-ltd.com/]
* $200 PS40M10 : Swordfish Hand-Held Instrument (1 channel) USB (EasySync)
* $220 DS1M12 : Stingray Multi-Function Instrument (2 channel) USB (EasySync)
* under $600 : [[Jameco]] has some actual stand-alone oscilloscopes for under $600. So does www.tequipment.com - see Rigol 'scopes from China - good quality - also on eBay.
* under $200 : Carl's Electronics has some stand-alone and PC-hosted (parallel port?) oscilloscopes for under $200.[http://www.electronickits.com/gold/gold.htm]
* $170 HobbyLab USB oscilloscope [http://hobbylab.us/USBOscilloscope/Home.htm]
* $500 DS1022C : 2 Channel, 25 MHz Rigol Technologies Inc.[http://rigolna.com/]
* $999 CS320A Cleverscope [http://cleverscope.com/] (has a discussion forum[http://cleverscope.com/forum/])
* $167 DrDAQ "data logger" (parallel port) from Pico Technology [http://www.drdaq.com/]
* $970 NI USB-5132 : USB digitizer from National Instruments [http://sine.ni.com/nips/cds/view/p/lang/en/nid/203719]
* $139 Parallax USB Oscilloscope 2 analog inputs + trigger; 1 MS/s [http://parallax.com/Store/Microcontrollers/BASICStampModules/tabid/134/txtSearch/28014/List/1/ProductID/46/Default.aspx?SortField=ProductName%2cProductName]
* $170 PC USB Oscilloscope DiSco (HobbyLab, LLC). 2 analog inputs ( 200 KHz ) + 16 digital inputs (or 8 digital inputs + 8 digital outputs). [http://hobbylab.us/]
* $150 ST16B 10 MHz stand-alone oscilloscope, 2 analog inputs [http://www.electronickits.com/gold/gold.htm]
* $190 VEPCS100 ( PCS100 ) - PC Based Oscilloscope; 1 analog input ( 12 MHz ); optically isolated from PC [http://www.electronickits.com/gold/gold.htm]
* $950 DSO-8502 USB Oscilloscope, 2 analog inputs (250MSa/s) + external trigger; 1 digital output (trigger out); buffer: 512K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $799 DSO-8202 USB Oscilloscope, 2 analog inputs (200MSa/s) + external trigger; 1 digital output (trigger out); buffer: 128K points/ch.[http://www.linkinstruments.com/oscilloscope85.htm]
* $108 LabJack U3 USB data acquisition and control device, 16 analog inputs ( 12 bit, 2.5 KSa/s at 12 bit resolution, 50 KSa/s at 8 bit resolution), buffer: 984 samples, 2 analog outputs, digital outputs [http://www.labjack.com/labjack_u3.php]
* $249 S2X100 USB Oscillloscope, 2 analog inputs (100Ms/s) with 8 bit resolution, buffer: 64K samples [http://www.dynoninstruments.com/products_s2x100.php?gclid=CNzyz_625pgCFQIyxwodgwSvMA]
* $495 ELAB-080 [http://www.dynoninstruments.com/products_elab080.php]
* $745 USBee AX-Plus, 2 analog inputs (Max 16 MS/s ?) and 8 digital inputs [http://www.usbee.com/ax.html]

''FIXME: [http://measurementcomputing.com/cbicatalog/directory.asp?dept_id=403 Measurement Computing] has some wireless and USB analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.dataq.com/ DATAQ Instruments, Inc.] has some USB and Ethernet analog DAQ instruments -- add to the above list.''

''FIXME: [http://www.designnotes.com/ DesignNotes.com, Inc.] has some USB and handheld LCD o'scopes from [http://www.velleman.be/ Velleman]: [http://www.vellemanusa.com/us/enu/product/list/?id=347914 Velleman oscilloscopes] -- add to the above list.''

''FIXME: [http://www.linkinstruments.com/oscilloscope.htm Link Instruments Inc.] has several USB o'scopes and "USB MSO" ("mixed signal o'scope"). Are they already listed above?''

EasySync[http://easysync-ltd.com/] is a distributor of RockyLogic's ANT8/etc products.

Test Equipment Solutions Today, Inc.[http://testsolu.com/] is a distributor of Rigol's DVM and oscilloscope products.

When you [http://search.ebay.com/search/search.dll?satitle=oscilloscope search eBay for oscilloscope], you might find some good deals.

== further reading ==

* other [[hardware tool | good equipment to buy when getting started]]

== external links ==

* [http://www.embedded.com/columns/breakpoint/160902529?printable=true "Scoping out palm-sized USB oscilloscopes"] by Jack Ganssle 2005, Embedded Systems Design. A review of 3 USB oscilloscopes -- reader comments at the end mention a few more USB o'scopes. ''(FIXME: make sure all the scopes mentioned are included on the above list)''
* Keith has made a list of [http://www.techtravels.org/amiga/amigablog/?p=167 "PC USB logic analyzers that cost under $1000."][http://www.techtravels.org/tech/logicanalyzer.html], some of which can be used as an o'scope. ''Should I use the same $1000 price cut-off for the above list? Or perhaps double or halve it?''
* Brooke Clarke has posted a list of [http://prc68.com/I/PCO.html "PC based Oscilloscopes"]
* [http://en.wikipedia.org/wiki/Oscilloscope Wikipedia: oscilloscope]
* Other discussions of [http://forums.reprap.org/read.php?13,5086 "Cheap digital storage oscilloscope"]
* [http://www.ganssle.com/microscopes.htm The Ganssle Group reviews Inexpensive USB Scopes and Logic Analyzers]
* [http://massmind.org/techref/tools.htm Massmind: Tools] lists a few sources for a variety of tools used in electronics: o'scopes, logic analyzers, meters, waveform generators, etc.
* [http://ask.slashdot.org/askslashdot/04/02/28/0041233.shtml Slashdot: "Cheap PC Oscilloscopes - Any Recommendations?"]
* [http://slashdot.org/askslashdot/01/12/07/191220.shtml Slashdot: "Building a Cheap Oscilloscope Using Your PC?"]
* [http://www.epanorama.net/links/measuring.html#pcmeasuring ePanorama.net: "Using PC as a measurement instrument"] ''(FIXME: anything we should add to the above list?)''

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[[Category:Techniques]][[Category:Test Equipment]]