> >> 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 > > > > You can get a 2.4 GHz spectrum analyzer for $129. > > > > http://www.dunehaven.com/lcsa.html > > > > If a 2.4 GHz spectrum analyzer can be sold for $129, why not a lower > > frequency unit? > > This device isn't really a digital spectrum analyzer. It is a sweeping > RF signal strength meter. Such a device is quite useful but it isn't > going to work for lower frequencies.
Okay, I'll bite. What's the difference between a spectrum analyzer and a sweeping meter? Don't most (perhaps all) analog spectrum analyzers work by sweeping a filter through the desired frequency range? BTW, I'm not suggesting that the $129 unit can do the things that a $$$$$ HP or Tek SA can do. _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
