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Power sensor RF input level

Question asked by ljoseph on Oct 25, 2016
Latest reply on Nov 30, 2016 by kaicheah



This is regarding RF power measurement of a modulated signal with 8 dB PAR using Keysight power sensor N1921A. In the old generation of power sensors , signal level were kept in the  square law region of -70 dBm to -20 dBm so that power head reads correctly with modulated signal with high PAR. N1921A has three path diode sensor  to take care  of these type of signals. I think we need not maintain the power sensor input in the  -70 dBm to -20 dBm range for the three path diode detector based N1921A. Is this correct?., What is the best input level so that N1921A give most accurate reading for a modulated signal of 8dB PAR.