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Why am I getting this message: "Certain features in the instrument firmware are currently not supported. Please refer to Keysight Web FAQ" when using my power meter and power sensor together with the N1918A Power Analysis Manager?

The message, as shown below, appears because some features are not available for certain combinations of power meters, power sensors, N1918 Power Analysis Manager and firmware versions. Please refer to the explanations given in the table.

Message
Power MeterPower SensorPower Analysis Manager
Firmware VersionsFeatures NOT AVAILABLE Reason
n/a





 
U2000 Series USB Power Sensors





 
N1918A





 
Earlier than A1.02.00





 
Time-gated measurement
Frequency dependent offset table




 
The firmware versions earlier than A1.02.00 do not support time-gated measurement and frequency dependent offset table.


Note: To have the time-gated measurement and frequency dependent offset table available, use the firmware version A1.02.00 or later.
N1911A/ N1912A P-Series Power Meters

Average Power Sensors (e.g. E9300 Series Power Sensors)



N1918A


A.03.02 or earlier External trigger in CW measurement mode


 
Both the N1918A Power Analysis Manager and the firmware versions A.03.02 or earlier do not support external trigger.

 
N1911A/ N1912A P-Series Power MetersAverage Power Sensors (e.g. E9300 Series Power Sensors)N1918ALater than A.03.02External trigger in CW measurement mode


The N1918A Power Analysis Manager does not support external trigger in CW measurement mode, even though the firmware versions later than A.03.02 can support it.



Note: To have the external trigger in CW measurement mode feature available in firmware versions later than A.03.02, use programming rather than the N1918A Power Analysis Manager.
N8262A P-Series Modular Power Meter



Average Power Sensors (e.g. E9300 Series Power Sensors)

N1918AA.02.01 or earlierExternal trigger in CW measurement mode

Both the N8262A Power Meter and the N1918A Power Analysis Manager do not support the external trigger in CW measurement mode feature.