FAQs from Rohde & Schwarz

Is the value indicated in FFT mode related to RMS or peak?


The FFT indicates value.

Is this an RMS or peak value?

FFT indicates value


The RTH can provide the measurement values in time domain.

Here a graphical representation of some measurement values:

Graphical representation of measurement values

The RMS value (0.3881 V) can be converted into 4.78917 dBm within the 50 Ohm system.