[time-nuts] Phase noise measurement with a scope
Stefan Heinzmann
stefan_heinzmann at gmx.de
Wed Jun 12 12:39:55 UTC 2013
Hi all,
given that digital scopes have a multichannel ADC for acquisition, which
is similar to what a cross-correlating phase noise measurement
instrument has, it occurred to me that phase noise measurement might
also be possible with a standard digital scope and some post-processing
software. The scope usually will have only 8 bits of resolution, but it
will have a rather high sampling rate. With oversampling math, one may
be able to trade one for the other, at least if the scope's analog
frontend is not too bad.
Has anyone investigated or tried this? Is it a silly idea to start with?
Cheers
Stefan Heinzmann
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