Keysight x-series User Manual

3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
limit line segment at RL – 20 dB, or –30 dBm. Furthermore, if the reference level
amplitude changes to –30 dBm, the limit line segment is displayed at RL – 20 dB, or
–50 dBm.
It is possible to change this setting after a limit line has been entered. When
changing from On to Off or vice versa, the amplitude values in the limit line table
change so that the limit line remains in the same position for the current reference
level settings of the instrument.
Remote
Command
:CALCulate:LLINe[1]|2|…|6:AMPLitude:CMODe:RELative ON | OFF | 1 | 0
:CALCulate:LLINe[1]|2|…|6:AMPLitude:CMODe:RELative?
Example Make Limit Line 1 relative to the reference level amplitude:
:CALC:LLIN:AMPL:CMOD:REL ON
Couplings Pressing this button makes Reference Level the active function
Preset
OFF
Not affected by Mode Preset, preset by Restore Mode Defaults
State Saved Saved in instrument state
Fixed / Relative Limit (Remote Command Only)
Sets both Relative to CF and Relative to RL simultaneously for all limits.
The query returns whether Limit Line 1 is set Relative to CF, and ignores all other
fixed/relative data.
Example Make all limit lines relative to center frequency and reference level:
:CALC:LLIN:CMOD REL
Notes Supported for Backwards Compatibility
PSA offers only the following softkey, which is generic to all limit lines: Limits Fixed / Rel
In X-Series A-Models, this functionality is provided by a softkey that is specific to each limit line, and
which provides a sub-menu with 2 softkeys (Relative to CF / Relative to RL)
In X-Series B-Models, this functionality is provided by two controls (Freq Reference and Amptd
Reference) that are specific to each limit line)
The legacy :CALCulate:LLINe:CMODe? query returns 1 if Limit Line 1 is set Relative to CF, and
returns 0 otherwise, to be consistent with the implementation of the following X-Series commands:
:CALCulate:LLINe[1]|2|…|6:FREQuency:CMODe:RELative ON | OFF | 1 | 0
:CALCulate:LLINe[1]|2|…|6:FREQuency:CMODe:RELative?
and
:CALCulate:LLINe[1]|2|…|6:AMPLitude:CMODe:RELative ON | OFF | 1 | 0
:CALCulate:LLINe[1]|2|…|6:AMPLitude:CMODe:RELative?
Preset Fixed
Backwards
Compatibility
SCPI
:CALCulate:LLINe:CMODe FIXed | RELative
:CALCulate:LLINe:CMODe?
Spectrum Analyzer Mode User's &Programmer's Reference 399

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)