Interference Rejection - Keysight N9912A User Manual

CAT (Cable and Antenna Test) Mode
CAT Mode Settings
Nominal here means: a general, descriptive term or design parameter. It is
not tested and not covered by the product warranty.
In FieldFox's with FW <A.08.15, the Nominal Output displayed on the
bottom right side of the display indicates a range of low and high power
values. Your actual measured output power could be a little lower or a
little higher. Refer to
If you have the USB power sensor feature (Option 302) you can measure
the actual output power for your measurement. Refer to page
"Power Meter Mode (Option 302)."
Figure 3-1 Nominal Output Power

Interference Rejection

Use this setting when you suspect that other signals in the area are interfering
with a measurement. Interference may look like a spike or lack of stability in the
measurement trace. While monitoring a measurement at a specific frequency,
toggle this setting between ON and OFF. If the measurement result decreases
while ON, then there is an interfering signal in the area. Continue to make
measurements with Interference Rejection ON. However, this will slow the
measurement speed.
Once enabled, up to SIX sweeps may be required before the interfering signal
is neutralized.
This setting can be changed at any time without affecting calibration accuracy.
How to set Interference Rejection
— Press Meas Setup 4.
— Then
— Then choose from the following:
3- 10
— Press Enter.
Figure
Interference Rejection [current
— Off No interference rejection and fastest possible sweep speed
— Minimum The lowest level of Interference rejection.
— Med ium The medium level of Interference rejection.
3-1.
setting].
Keysight N9912-90001 User's Guide
Chapter 11,