Keysight x-series Programmer's Reference

3 VMA Mode
3.6 Occupied BW Measurement
with what you want to measure, instead of being part of what you want to measure.
Note that NFE is not adequately accurate to always be able to read below kTB.
Recalibration of Noise Floor
In instruments with the NF2 license installed, the calibrated noise floor used by
Noise Floor Extension should be refreshed periodically. Keysight recommends that
the Characterize Noise Floor operation be performed after the first 500hours of
operation, and once every calendar year. To do this, use "Characterize Noise Floor"
on page 1941, under System, Alignments, Advanced. If you have not done this
yourself at the recommended interval, then when you turn on Noise Floor Extension,
the instrument will prompt you to do so with a dialog stating:
This action will take several minutes to perform. Please disconnect all cables from
the RF input and press Enter to proceed. Press ESC to cancel, or Postpone to
postpone for a week
If you cancel, you will be prompted again the next time you turn NFE on. If you
postpone, you will be prompted again after a week passes and you then turn NFE
on.
IF Gain
Sets the IF Gain function to one of:
Setting SCPI Comments
Auto AUTO = ON Auto
Low
OFF
AUTO = OFF
Low Gain
High
ON
AUTO = OFF
High Gain
This setting affects sensitivity and IF overloads. It only applies to the RF input; not to
the baseband I/Q input.
Remote Command
[:SENSe]:OBWidth:IF:GAIN[:STATe] ON | OFF | 1 | 0
[:SENSe]:OBWidth:IF:GAIN[:STATe]?
[:SENSe]:OBWidth:IF:GAIN:AUTO[:STATe] ON | OFF | 1 | 0
[:SENSe]:OBWidth:IF:GAIN:AUTO[:STATe]?
Example
:OBW:IF:GAIN ON
:OBW:IF:GAIN?
:OBW:IF:GAIN:AUTO OFF
:OBW:IF:GAIN:AUTO?
Vector Modulation Analyzer Mode User's &Programmer's Reference 1026

Keysight x-series Specifications

General

Analysis Bandwidth	Up to 1 GHz (depending on model)
Real-Time Bandwidth	Up to 1 GHz (depending on model)
Form Factor	Benchtop
Connectivity	LAN, USB, GPIB
Resolution Bandwidth	1 Hz to 10 MHz (depending on model)