Re: [Open-graphics] o-scope and spectrum analyzer

Fri, 07 Apr 2006 11:53:12 -0700

Max makes a decent 1Ghz ADC.  Though for useful purposes of signal analysis you need more than nyquist for the sampling rate.  Tek I believe states a minimum of 4x the signals frequency.  But still 250Mhz would be a decent scope.  A better scope design would be to use a couple of Analogs sample and hold devices that have a sample width in pico seconds.  Then you could gang 2 or more ADCs together.  Also this whole thing really couldn't exist on a PCI card.  The analog portion would need to be an external device.

On 4/7/06, Dieter <[EMAIL PROTECTED]> wrote:
> > Any thoughts on the fast ADC card which could provide
> >
> >         o'scope
> >         spectrum analyser
> >         software radio
> >         ...?
> >
> > I have no clue how feasible this would be, how much it would cost,
> > markets, etc.  My fear is it would be both too slow and too expensive.
>
> I'm expecting that a number of these things will happen with OGD1.  If
> we build an ADC add-on card, then an o-scope and spectrum analyzer
> would be easy.

Any wild guesses on how fast these would be?   E.g. what frequency
could they examine?
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