HelpMe Posted December 4, 2004 Report Share Posted December 4, 2004 Hi! Currently I doing a PC Oscilloscope for a project. May i know if anyone know about the VI Labview software for this project. Quote Link to comment Share on other sites More sharing options...
HelpMe Posted December 5, 2004 Author Report Share Posted December 5, 2004 Does anyone know about setting up a PC Oscilloscope? or done any similiar one? ::) Quote Link to comment Share on other sites More sharing options...
ante Posted December 5, 2004 Report Share Posted December 5, 2004 I don Quote Link to comment Share on other sites More sharing options...
HelpMe Posted December 7, 2004 Author Report Share Posted December 7, 2004 thanks for your reply!As i know the flow => Device-->ADC-->Interface-->PC Display.The Device is to retrieve the signal, any suggestion for the Device? Quote Link to comment Share on other sites More sharing options...
ante Posted December 7, 2004 Report Share Posted December 7, 2004 To you mean an attenuator for the input? Quote Link to comment Share on other sites More sharing options...
HelpMe Posted December 8, 2004 Author Report Share Posted December 8, 2004 Hi! Currently I doing a PC Oscilloscope for a project. May i know if anyone know about the VI Labview software for this project.the hardware for building a PC Oscilloscope. What is the hardware made of? any suggestion for the hardware? Thks Bro! Quote Link to comment Share on other sites More sharing options...
Guest Yevgenip Posted December 8, 2004 Report Share Posted December 8, 2004 What is the hardware made of? >:( What do you mean? Components? Quote Link to comment Share on other sites More sharing options...
ante Posted December 8, 2004 Report Share Posted December 8, 2004 The hardware is usually some form of attenuator to set the input range of the signal to measure. Next stage is the soundcard in your computer, and that Quote Link to comment Share on other sites More sharing options...
HelpMe Posted December 9, 2004 Author Report Share Posted December 9, 2004 Thanks Ante... it is to design and construct hardware required for data acquisition. if i use a soundcard interface, would i've have to use PIC microcontroller which transfer the data to the PC (vis RS232)? Quote Link to comment Share on other sites More sharing options...
ante Posted December 9, 2004 Report Share Posted December 9, 2004 You just need an attenuator and from the attenuator the signal goes to the line in connector on the soundcard that Quote Link to comment Share on other sites More sharing options...
CRE Posted December 12, 2004 Report Share Posted December 12, 2004 I'm also interested in making one of these, but out of fear of frying my soundcard I'm hesitant. Does anyone possibly have a schematic for one which makes the use of an optoisolator? I don't anticipat working on anything which requires more than 18v (for the circuit) that I'd need to test so I think there must be a simple way of making an isolating interface. If someone has a link or schematic it would be much appreciated. ;D Me = newbie :-\Thanks Quote Link to comment Share on other sites More sharing options...
Dazza Posted December 12, 2004 Report Share Posted December 12, 2004 Check this link out, it looks very good but very expensive To make. http://alternatezone.com/electronics/dsoamk3.htmI asked about PC oscilloscope awhile back, and someone posted this link. Quote Link to comment Share on other sites More sharing options...
CRE Posted December 12, 2004 Report Share Posted December 12, 2004 Thanks for the reply Dazza but the link's either broken or the server's down... I'll try it again tonight. Although I really don't think I need anything very complex, just a small circuit to isolate the soundcard/PC from the test circuit.I'm too new to oscilloscopes to know what can and can't be done in order to keep a clean signal, so if anyone else has a schematic it'd be deeply appreciated. I think this is what the initial poster HelpMe wanted as well.Thanks! ;D Quote Link to comment Share on other sites More sharing options...
Dazza Posted December 12, 2004 Report Share Posted December 12, 2004 Hi CRE,I am also wanting the same thing :D, something not too complicated and most importantly, I can be confident it won't damage my computer. I amended the link I posted so now you can just click on it, but it's still not working :( hopefully it comes good because it's worth checking out. I would have seriously considered putting it together, if it wasn't so expensive to make >:(. The most appealing part to me, was that it had the PCB pattern and components overlay, as well as very good detailed information for construction. Quote Link to comment Share on other sites More sharing options...
CRE Posted December 13, 2004 Report Share Posted December 13, 2004 Is an optoisolator out of the question? I figure you'd need to add some sort of control to adjust the gain on the transistor side of it and how about the sensors? Do they have to supply any voltage or signal or is everything supplied by the test circuit? In which case you really just need to make sure that signal is attenuated enough for the emitter side to handle. But are optoisolators responsive enough? Quote Link to comment Share on other sites More sharing options...
elect Posted December 13, 2004 Report Share Posted December 13, 2004 Hi 4 everyone. Why u dont try to make it by your selfe. See attach for example. I think that will do a job. In worst case u can damige a diode. But thay are cheap ;). Sound card is practicaly isolated from source because input resistance of op.amp. is, theoreticaly, infinite. Only defect is low speed of response and, of course, low frequency band. I think that is 44khz for n-vidia sound cards, but I, also, think that will not work over, lets say, 30khz. I am going to project a very good interface for it with big frequency bandwidth and lots more... :) I will send it here when/if I do that. atenuator_4_digital_osciloscope.zip Quote Link to comment Share on other sites More sharing options...
CRE Posted December 14, 2004 Report Share Posted December 14, 2004 well, if a few other want to verify the design I'll give it a shot on my backup PC.... I'll also need to know where to get software for SuSe Linux though. I'm not trying anything untested on my main PC. Theory is one thing.... I've had a lot of them.... ;D The product can sometimes be quite different, trust me. :-[But yeah if someone else would please look this over and verify whether it's safe for use (at least with low voltage circuits 1-18v) I'll give it a try and post my results.But if you're working on something better..... well. ;) Quote Link to comment Share on other sites More sharing options...
elect Posted December 20, 2004 Report Share Posted December 20, 2004 Make it if U so wont to work with osciloscope... I worrant 4 this attenuator. Of course this scheme isn't complite... Power soply is missing... But it's a few click on simulator software :) . If U are working with a lower signal make a feedback band on op.amp..... Quote Link to comment Share on other sites More sharing options...
HelpMe Posted December 21, 2004 Author Report Share Posted December 21, 2004 My Objectives is to design n construct hardware for data acquisition, to interface the PIC microcontroller input, then medium through RS232.design a windows based application capable of displaying low-frq waveforms in real-time. Does anyone have any experience on these set up? Quote Link to comment Share on other sites More sharing options...
pinoyNuBi Posted December 22, 2004 Report Share Posted December 22, 2004 I found a software for it but forgot were i got, it uses older OS, Win98 and below, try tina.com<electronics> :) Quote Link to comment Share on other sites More sharing options...
HelpMe Posted January 2, 2005 Author Report Share Posted January 2, 2005 hey guys! i found out my project consists of 2 stages- Hardware and Software. For hardware stage... consists of interfacing the analog to digital converter(ADC) with the PC through the parallel port(RS232).For software stage... It's is a DOS based software written in the 'C' language.Do you guys have any ideas of setting up the hardware? thanks in advance. Quote Link to comment Share on other sites More sharing options...
HelpMe Posted January 12, 2005 Author Report Share Posted January 12, 2005 i'm doing my final year project. There are many examples way of making a PC-Based osilloscope. Different of hardware and software approach. May i know which approach would u all prefer of getting the hardware and software u choose to set up? Quote Link to comment Share on other sites More sharing options...
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