> > you will have troubles with processing the 500+ MB/s of data in realtime > > on the PC's CPU.. > > I don't think that it would need to process this much data per second. > A spectrum analyzer, like a digital oscilloscope, does not deal with > real time data but rather with a periodic signal. To be more specific, > a digital oscilloscope displays a periodic signal on the screen and the > refresh scans rather slowly from left to right.
You need to be able to *capture* the data in real time, in order to do a single sweep mode, for non-periodic signals. The processing and display of that data don't have to be real time. > So the question is whether you can make a good PC card digital > oscilloscope for $100.00. You need an oscillator, frequency divider, > PLL, sample & hold, and DAC as well as the PCIe interface. I seriously > doubt that this is possible for $100.00 but it does depend on the > maximum input frequency you wish to use, sample rate, and the accuracy > (and number of bits) needed. Actually, you can spend over $100. on a > good DAC Yes, what is the maximum frequency for this project? Will OGC be able to output arbitrary waveforms, or only video? If OGC can generate sine waves, square waves, triangle, etc. it would be very useful as a piece of test equipment. It could be a tracking generator for the spectrum analyzer? _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
