Keysight x-series User Manual

3 Spectrum Analyzer Mode
3.4 Occupied BW Measurement
[:SENSe]:FREQuency:CENTer:STEP[:INCRement]?
[:SENSe]:FREQuency:CENTer:STEP:AUTO OFF | ON | 0 | 1
[:SENSe]:FREQuency:CENTer:STEP:AUTO?
Example Increase the current center frequency value by 500MHz:
:FREQ:CENT:STEP 500 MHz
:FREQ:CENT UP
:FREQ:CENT:STEP:AUTO ON
:FREQ:CENT:STEP:AUTO?
Notes Preset and Max values depend on Hardware Options
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
Couplings When auto-coupled in a non-zero span, the center frequency step size is set to 10% of the span
When auto-coupled in zero span, the center frequency step size is set to the equivalent -3dB RBW
value
Preset Auto
ON
State Saved Saved in instrument state
Min – /+(the maximum frequency of the instrument). That is, 27GHz max freq instrument has a CF step
range of +/- 27GHz. Note that this is the maximum frequency given the current settings of the
instrument, so in External Mixing, for example, it is the maximum frequency of the current mixer band
Status Bits/OPC
dependencies
non-overlapped
Freq Offset
Lets you set a frequency offset value to account for frequency conversions outside of
the instrument. This value is added to the display readout of the marker frequency,
center frequency, start frequency, stop frequency, and all other absolute frequency
settings in the instrument, including frequency count. When a frequency offset is
entered, the value appears below the center of the graticule. To eliminate an offset,
perform a Mode Preset, or set the frequency offset to 0Hz.
See "More Information" on page 791.
Remote Command
[:SENSe]:FREQuency:OFFSet <freq>
[:SENSe]:FREQuency:OFFSet?
Example
:FREQ:OFFS 10 MHz
:FREQ:OFFS?
790 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)