Keysight x-series Programmer's Reference

3 VMA Mode
3.1 Digital Demod Measurement
Not available when the electronic/soft attenuator is enabled
Preset
LOW
State Saved Saved in instrument state
Annotation When the USB Preamp is not connected to USB, the Preamp annotation in the Meas Bar says “Off” if
the preamp is off and displays the frequency range of the low band or full range preamp depending on
the setting. For example, if the Preamp is set to Low Band and the Low Band is 3.6GHz the annotation
says “3.6GHz”. If it is a 13.6GHz preamp and it is set to Full Range the annotation says “13.6GHz”
When the USB Preamp is connected to USB, the Preamp annotation says “Preamp: USB” if the
internal preamp is off or “Preamp: USB, Int” if the internal preamp is on (only for measurements that
support the USB preamp)
Auto Function
Remote Command
[:SENSe]:POWer[:RF]:GAIN[:STATe] OFF | ON | 0 | 1
[:SENSe]:POWer[:RF]:GAIN[:STATe]?
Example
:POW:GAIN OFF
:POW:GAIN?
Preset
OFF
LNA
Lets you turn the Low Noise Amplifier (LNA) on or off.
LNA is an additional preamplifier that provides superior DANL and frequency range
compared to "Internal Preamp" on page 1788. LNA provides lower system noise
figure, especially at frequencies above 100MHz, and can be operated up to the full
range of 50GHz instruments.
For best possible sensitivity, LNA can be turned on together with "Internal Preamp"
on page 1788, although if you operate both preamps together, note that the TOI
(distortion) specifications are impacted. The sensitivity improvement of this
combination is substantial when operating in high band (frequencies above
3.6GHz).
For more details about annotation, see "More Information" on page 259
Remote Command
[:SENSe]:POWer[:RF]:GAIN:LNA[:STATe] OFF | ON | 0 | 1
[:SENSe]:POWer[:RF]:GAIN:LNA[:STATe]?
Example
:POW:GAIN:LNA ON
Dependencies Requires OptionLNA, except for VXT models M9415A/16A
Does not appear in VXT models M9420A/10A/11A
M9410E/11E/15E/16E support LNA
May not appear in some measurements
LNA is not available when the electronic/soft attenuator is enabled
Vector Modulation Analyzer Mode User's &Programmer's Reference 258

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)