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Anritsu FAQs

When I turn on Marker Noise, the detector changes to RMS, why is that?
The RMS detector is the best choice for noise measurements as it provides unbiased averaging of the signal.  This gives a stable answer (because of the averaging) and gives the correct answer (because it is "unbiased").  Contrast this to the peak detector, where the answer continually grows over time, and the Sample detector, which provides no averaging