Setting up SR760 1 channel spectrum analyzer to check differential noise before and after pi filters on the fridge wiring.
This analyzer was lended out to another lab earlier.
Found two probe wires that will be compaitable for the measurement. Thoughts?
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Doing noise measurement on the fridge still heater wire, with and without twisted pair connection to the lakeshore. Didn't see any change in noise floor or spurious peaks/amplitudes.
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CMRR (Common mode Rejection) test (value listed in manual: 90 dB at 1kHz input range < -6 dBV)
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