In message <[EMAIL PROTECTED]>, "richard nienhuis" writes: > > > > 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? > > 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.
Grumble. I'd like a scope and spectrum analyser that goes up to at least 700 MHz. If 1Ghz ADC is the limit, even a perfect low pass filter from the Ideal Physics Company only gets us to 500 Mhz. > A better scope design would be to use a couple of Analogs sample an= > d > hold devices that have a sample width in pico seconds. Then you could gang > 2 or more ADCs together. I'm afraid I don't follow you. What does ganging 2 or more ADCs together achieve? Multiple inputs? Faster sample rate? > Also this whole thing really couldn't exist on a > PCI card. The analog portion would need to be an external device. External devices are fine with me. _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
