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

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

Ah! Now its a little more clear to me!
Thank you very much!
Another product is the PS40M10 which has 40M samples/s and with oversampling 
cand make 1G samples/s for repetitive signals. So, I can expect a analog 
bandwidth of about 10M Hz?

Em Ter 23 Nov 2004 15:34, Thomas A.D. Riley escreveu:
> Note that it can manage 20 Msamples /second only for repetitive signals.
>
> On Tue, 2004-11-23 at 10:38, Xtian Xultz wrote:
> > 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