From: firstname.lastname@example.org (Glenn Gundlach)
Subject: Re: How to build your own Oscilloscope?
Date: 22 Sep 2002 11:20:19 -0700
NNTP-Posting-Date: 22 Sep 2002 18:20:19 GMT
John Seney wrote in message news:...
> In article <0vcj9.172680$Jo.55878@rwcrnsc53>, Qwertys
> > I Recently got myself an oscilloscope, not the best, a very old military
> > one.
> > but then after using it, i realized i need something more powerfull.
> > so here comes the question, where can i find a good example or tutorial
> > of
> > building your own HIGH end scope card or PC device.
> > the only way i can think of building one is to get a high resolution ADC,
> > provide a means of attatching it the computer, and write a program.
> > but i know thats not enough.
> > i know i am missing something, things that would effect accuracies and
> > such.
> > how could i go about doing this.
> Start with a free one - where the ADC is already in your PC's sound card
> and it comes with a nice Windows program for user interface and display.
> As to building or buying a digital scope or data acquisition system that
> is ADC based, its not easy to design and build from scratch something
> that wouldn't be a lot less expensive if purchased outright. By the time
> you get all parts and overcome the design and debug challenges, your
> budget and your application's relevancy (due to time) usually lose.
> The world is full of various ADC cards - PCI, PXI, VXI, etc.
> Be sure you know the resolution (vertical in bits, horizontal in
> time [samples]), trigger requirements, for the application(s) you are
> Scope FAQ at http://www.qsl.net/wd1v
Just looked at eBay. Tek 475 dc-250 mHz less than $100. If you have a
computer, I bet you can afford $100. Tek 3012 DPO starts at $3000.