Inexpensive USB spectrum analyzer.. http://www.signalhound.com/
I think it has the ability to capture raw samples, too. (the BB60
definitely does.) They have a 10MHz ref input.
The spectrum analyzer has a phase noise feature
Phase Noise Plot
: Displays the phase noise amplitude, in dBc/Hz, vs. offset from carrier
when checked. You must have a span of 10 KHz or less, and the signal
should be within 1 division of the reference level (e.g. within 10 dB).
This utility takes about 1 minute to run. It will sweep several times,
then combine the sweeps into a phase noise plot. The data is approximate
and is limited by the phase noise of the SignalHound itself. For best
closein phase noise, use an external 10 MHz reference with > 10 dBm
power level. To resume normal operation,click "Phase Noise Plot" a
second time to uncheck.
Anyone fooled with one? Think it might work as a low cost part of a
phase noise test set.
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