Keysight x-series Programmer's Reference

3 VMA Mode
3.11 Phase and Amplitude vs Time Measurement
I/Q Center Freq
Specifies the I/Q Center Frequency. This command sets the Center Frequency to be
used when the I/Q input is selected, even if the I/Q input is not the input which is
selected at the time the command is sent. Note that the Center Freq function in the
Frequency menu on the front panel always applies to the currently selected input.
Remote Command
[:SENSe]:FREQuency:IQ:CENTer <freq>
[:SENSe]:FREQuency:IQ:CENTer?
Example
:FREQ:IQ:CENT 30 MHz
Notes This command is the same in all modes, but the parameter is Measurement Global. So the value is
independent in each mode and common across all the measurements in the mode
Dependencies I/Q Center Freq is not available in VXT Models M9410A/11A
State Saved Saved in instrument state
Min -40.049995 MHz
Max 40.049995 MHz
CF Step
Changes the step size for "Center Frequency" on page 1814, and start/stop
frequency functions. Once a step size has been selected and the Center Frequency
function is active, the step keys (and the UP|DOWN parameters for Center Frequency
from remote commands) change Center Frequency by the step-size value.
Remote Command
[:SENSe]:FREQuency:CENTer:STEP[:INCRement] <freq>
[:SENSe]:FREQuency:CENTer:STEP[:INCRement]?
[:SENSe]:FREQuency:CENTer:STEP:AUTO OFF | ON | 0 | 1
[:SENSe]:FREQuency:CENTer:STEP:AUTO?
Example
:FREQ:CENT:STEP 500 MHz
:FREQ:CENT UP
increases the current center frequency value by 500 MHz
:FREQ:CENT:STEP?
:FREQ:CENT:STEP:AUTO ON
:FREQ:CENT:STEP:AUTO?
Notes Preset and Max values are depending on Hardware Options (503, 507, 508, 513, 526)
Dependencies Span, RBW, Center frequency
If the electronic/soft attenuator is enabled, any attempt to change the value of the center frequency
>3.6 GHz by pressing the Up-arrow key, fails and results in an advisory message. If the equivalent
SCPI command is sent, this same message is generated as part of a “-221, Settings conflict” warning
This control does not appear in 5G NR Mode
1819 Vector Modulation Analyzer Mode User's &Programmer's Reference

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)