Re: PC based DIY Oscilloscopes, logical analyzers, spectrum analyzers, etc...

seen this
http://www.tti-test.com/products-tti/rf/spectrum-analyzer.htm ?
It even plays MP3s while you are working, and picks up blooteeth viri
as well


Yes, I have seen those. A company in Germany (Aaronia) makes a whole
range of them.

I am looking for something cheaper and most of all smaller. No display,
no battery, no keyboard. A laptop or PDA that you already have to
schlepp along anyway can do all that. Or, pretty soon I guess, a fancy
cell phone.

How fast shall the swep be done ..?

I've seen 50 MHz USB2 "scopes" already on the market (VERY small). Maybe such
could be programmed to do your spectrum measurements?
(frequency might be the akilles heel thoe I suspect :)

.

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