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Original Message
RE: Power supply ripple???
Posted by 6AS7_6SN7 on March 20, 2017 at 23:41:03:
In order to sort it out you need FFT.
Spectral analysis will tell you the true harmonics of noise.
You have to download the time history to an external computer for FFT.
What you see in the time domain is essentially wideband white noise.