Re: gEDA-user: Any DIY USB Scope project on schedule? Or some recommmendation?

[Xtian Xultz <xultz@terra.com.br>]

I Understand what you say. And what the mega samples per second means? I cant 
understand why having 20 mega samples per second I can measure onle 250k Hz 
of a sine wave...

Em Ter 23 Nov 2004 13:40, Samuel A. Falvo II escreveu:
> On Tuesday 23 November 2004 05:00 am, Xtian Xultz wrote:
> > this produtc says it makes 20M samples per second, but have a analog
> > bandwidth of 250k Hz. What is the greatest (in frequency) signal I can
> > measure with it? Someone knows?
>
> If the analog bw is 250kHz, then you can expect accurate representation
> of waveforms up to 50kHz (square waves will have harmonics all the way
> out to and beyond 250kHz).  If you are just observing sine waves, then
> 250kHz would be your top frequency.
>
> So it depends, really, on what kind of signal you're interested in
> probing.
>
> --
> Samuel A. Falvo II