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