Keysight x-series User Manual

3 Spectrum Analyzer Mode
3.6 Power Stat CCDF Measurement
When Restore Input/Output Defaults is performed, the mixer presets to the 11970A, whose Start and
Stop frequencies are 26.5 and 40GHz respectively. The center of these two frequencies is 33.25GHz
Therefore, after Restore Input/Output Defaults, if you go to External Mixing and do a Mode Preset while
in Spectrum Analyzer Mode, the resulting Center Freq is 33.25GHz
State Saved Yes
Min The minimum frequency in the currently selected mixer band + 5 Hz
Max The maximum frequency in the currently selected mixer band - 5 Hz
I/Q Center Freq
Specifies the I/Q Center Frequency. Sets the Center Frequency to be used when the
I/Q input is selected, even if the I/Q input is not the input that is selected at the time
the command is sent. Note that Center Frequency 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
Preset 0 Hz
State Saved Saved in instrument state
Min/Max –/+40.049995 MHz
CF Step
Changes the step size for the "Center Frequency" on page 1193 and start and 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 the center frequency by the step-size value. The
step size function is useful for finding harmonics and sidebands beyond the current
frequency span of the instrument.
Note that the start and stop frequencies also step by the CF Step value.
Remote Command
[:SENSe]:FREQuency:CENTer:STEP[:INCRement] <freq>
[:SENSe]:FREQuency:CENTer:STEP[:INCRement]?
Example Increase the current center frequency value by 500 MHz:
:FREQ:CENT:STEP 500 MHz
:FREQ:CENT UP
:FREQ:CENT:STEP?
1198 Spectrum 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)