Keysight N9923-90001 User’s Guide85CAT (Cable and Antenna Test) ModeCAT Mode SettingsInterference RejectionUse this setting when you suspect that other signals in the area are interferingwith a measurement. Interference may look like a spike or lack of stability in themeasurement trace. While monitoring a measurement at a specific frequency,toggle this setting between ON and OFF. If the measurement result decreaseswhile ON, then there is an interfering signal in the area. Continue to makemeasurements with Interference Rejection ON. However, this will slow themeasurement speed.Once enabled, up to SIX sweeps may be required before the interfering signalis neutralized.This setting can be changed at any time without affecting calibration accuracy.How to set Interference Rejection— Press Meas Setup 4.— Then Interference Rejection [current setting].— Then choose from the following:—Off No interference rejection and fastest possible sweep speed—Minimum The lowest level of Interference rejection.—Med ium The medium level of Interference rejection.—Maximum The highest level of Interference rejection.
