The subsystem POWer measures the RF signal power versus time. The subsystem corresponds to the measurement menu Power and the associated popup menu Power Configuration.
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Measurement Control - Subsystem POWer
Test Configuration
Subsystem POWer:FREQuency (Frequency/RBW)
Subsystem POWer:LEVel (Level)
Subsystem POWer:TIME
Results - Subsystem POWer...?