Re:$89 pocket oscilloscope
by jws on Friday February 19, 2010 @08:31AM
(#1136845)
1MHz maximum sample rate.
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Somewhat limiting for some purposes. I've got a 'cheap' 60mhz scope here, but I rarely use it at that speed. I'm mainly measuring some audio signals or calibrating something on a synth.
Keeping one of these in my travel case for my music rig is a lot easier than carrying my large scope around. Definitely going to get one- or two.
It's not 1MHz (in the usual sense), it's 1MS/s. In theory, Nyquist says it should therefore be good to 500kHz in realtime; in practice, consider yourself lucky if that works out. Also consider that if the 'scope has a proper antialiasing filter its rise time will be limited to something in the microsecond region - and if it doesn't have such a filter you've got another problem on your hands. I guess if you've got a repetitive signal and it can do averaging, that would help.