88 Keysight NFA Series Noise Figure Analyzers Service Guide
Instrument Messages
Event Messages
–221 Settings conflict;
FFT IF Gain High not
available when Swept
IF Gain = Manual Low
When Swept IF Gain is manually set to Low, you cannot set the FFT IF Gain to
High because that would make the Reference Level couplings wrong in FFT
mode
–221 Settings conflict;
FFT method is
unavailable for level
gating
If you are using level gating, you cannot select the FFT Gate Method
–221 Settings conflict;
FFT sweep type is not
available while in
Gated LO
The gated LO function turns the LO on and off as it sweeps, so the FFT sweep
type is not available if you have selected gated LO
–221 Settings conflict;
FFT sweep type is not
available while in
Gated Video
The FFT sweep type is not available if you have selected the gated video
function
–221 Settings conflict;
FFT Sweeps
unavailable in
Tracking Source mode
Since FFTs do not sweep, you cannot use a Tracking Source while doing FFTs
–221 Settings conflict;
Fixed marker adjust
not available while
Marker Function is on
If a Marker Function is on for a Fixed marker, the marker's reported value is
derived from the function. Therefore, you cannot directly set the X or Y value
of a Fixed marker that has a marker function turned on
–221 Settings conflict;
Fixed Marker Y value
is not adjustable
with Normalize On
If Normalize is on the Amplitude scale is in dB units, so adjusting the Y value
of a Fixed marker is not possible
–221 Settings conflict;
Function not
available in External
Mixing
The frequency offset feature cannot be used when you have selected a log
scale for the frequency axis
–221 Settings conflict;
Function not
available in Tracking
Source mode
The feature cannot be used when you are using a Tracking Source
–221 Settings conflict;
Function only
available in Tracking
Source mode
The feature cannot be used unless you are using a Tracking Source
–221 Settings conflict;
Function unavailable
with MW Presel off
You cannot center or adjust the preselector because the Microwave
Preselector is currently off
Err# Message Verbose/Correction Information
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