86 Keysight NFA Series Noise Figure Analyzers Service Guide
Instrument Messages
Event Messages
–221 Settings conflict; 
Cal only available 
when Source Mode is 
Tracking
You must be in Tracking Source mode to use the Cal functions under 
Normalize. Press Source, Source Mode and set it to Tracking
–221 Settings conflict; 
Calibration cannot be 
performed without 
valid ENR data
The cal ENR table has no values in it, and hence the cal cannot be performed. 
Correct by either populating the cal ENR table, set ENR mode to Spot, or set 
the ‘Use Meas Table Data for Cal’ to ‘On’
–221 Settings conflict; 
Cancellation is not 
available while 
measuring DANL floor.
Phase Noise cancellation does not make sense when measuring the DANL 
Floor, so for this reason it has been disabled
–221 Settings conflict; 
Cancellation Ref 
trace has no data.
When performing phase noise cancellation, you need to supply a reference 
trace that will be used to cancel out the background noise of the analyzer. 
The reference trace must be in Reference (View) mode, and selected by the 
Ref Trace parameter under the Cancellation menu
–221 Settings Conflict; 
Cancellation trace 
has different X-Scale
Reference trace for the cancellation has a different range of X-axis against 
the target trace
–221 Settings conflict; 
Cannot optimize while 
user cal in progress
Optimize Preselector cannot be performed while a user cal is in progress. The 
user cal performs an optimize preselector prior to taking the noise source 
on/off level results for the cal data
–221 Settings conflict; 
Can't Auto-Couple Res 
BW in Zero Span
The resolution bandwidth cannot be set to auto while you are in zero span 
(time domain)
–221 Settings conflict; 
Carrier freq not 
allowed with BMT. 
(Bottom/Middle/Top 
only)
The transmit band spur measurement only allows bottom (B), middle (M), and 
top (T) channel frequencies for each supported frequency band. The carrier 
frequency must be set to the bottom, middle or top frequency of the current 
frequency band
–221 Settings Conflict; 
Code channel 
duplication
This error is reported when the given code channel overlaps other code 
channel
–221 Settings conflict; 
Continuous Peak is 
not available with 
Fixed marker
The continuous peak feature cannot be used with a marker that is fixed. By 
definition that marker value cannot change
–221 Settings conflict; 
Continuous Peak is 
not available with 
Signal Track on
The continuous peak feature cannot be used while you are also using the 
signal tracking function
Err# Message Verbose/Correction Information