4 Operating Guide46 Keysight N4985A Operating and Service ManualOperating InstructionsPerformance verificationThe figures below show the setup used to verify the performance of the N4985Asystem amplifiers.A calibrated power splitter (or calibrated coupler) connected to the amplifier inputreference plane and to power sensor A, as shown, establishes the input powerlevel. The output power is measured on power sensor B. Measurements of gainversus output power at frequencies of interest establish the amplifierperformance.Figure 4-1 Verification setup with a power splitterFigure 4-2 Verification setup with a calibrated coupler
