Keysight M9421A - IF Gain

3 WLAN Mode
3.6 Modulation Analysis Measurement
Example
:EVM:LO:DITH 1
:EVM:LO:DITH?
Dependencies This feature is only available when the instrument has the option H1G installed
The LO Dither key is turned Off and grayed out when IFBW <= 255M. If the user pressed the grayed-
out key, then a warning message “Feature only available with the H1G path” is shown
If the user tries to set LO Dither to ON via SCPI, a message -221,"Settings conflict; Feature only
available with the H1G path" is returned
Preset 0
State Saved Yes
Range On | Off
IF Gain
In order to take full advantage of the RF dynamic range of the analyzer, we offer a
switched IF amplifier with approximately 10 dB of gain. When it can be turned on
without an overload, the dynamic range is always better with it on than off. The
control “IF Gain” can be used to set the IF Gain function to Auto, or to On (the extra
10 dB) or Off. These settings affect sensitivity and IF overloads.
Enables you to control an internally switched IF amplifier with approximately 10 dB
of gain. This amplifier takes full advantage of the RF dynamic range of the analyzer.
When it can be turned on without an overload, the dynamic range is always better
when the amplifier is set to On, than when it is set to Off. The control “IF Gain” can
be used to set the IF Gain function to Auto, or to On (the extra 10 dB) or Off. These
settings affect sensitivity and IF overloads.
IF Gain Auto
Activates the auto rules for IF Gain.
Remote Command
[:SENSe]:EVM:IF:GAIN:AUTO[:STATe] OFF | ON | 0 | 1
[:SENSe]:EVM:IF:GAIN:AUTO[:STATe]?
Example
:EVM:IF:GAIN:AUTO OFF
:EVM:IF:GAIN:AUTO?
Notes This only applies to the RF input. It does not apply to baseband I/Q input
Dependencies This control does not appear in UXM E7515A, Modular PXI Signal Analyzer M9393A or M9391A
Couplings When either the auto attenuation is active (for example, with an electrical attenuator), or the optimize
mechanical attenuator range is requested, the IF Gain setting is changed using the following rule
The Auto selection sets IF Gain to ‘High Gain’ under any of the following conditions:
–
the input attenuator is set to 0 dB
–
the preamp is turned on
1071 WLAN Mode User's &Programmer's Reference