Keysight x-series User Manual

3 Spectrum Analyzer Mode
3.8 Spurious Emissions Measurement
State Saved Saved in instrument state
Min Variable. Limited to values that keep the reference level within the range –327.6 dB to 327.6 dB
Max 327.6 dB
Annotation The offset is displayed as “Ref Offset <value>” to the right of the reference level annotation if nonzero.
When the offset is zero, no annotation is shown
Auto Function
Remote
Command
:DISPlay:WINDow[1]:TRACe:Y[:SCALe]:RLEVel:OFFSet:STATe OFF | ON | 0 | 1
:DISPlay:WINDow[1]:TRACe:Y[:SCALe]:RLEVel:OFFSet:STATe?
Example Turn Ref Level OffsetON:
:DISP:WIND:TRAC:Y:RLEV:OFFS:STAT ON
Preset
OFF
Ref Position
Positions the reference level at the top, center, or bottom of the Y Scale display.
Changing the reference position does not change the reference level value.
Preset
TOP
State Saved Saved in instrument state
Range Top | Center | Bottom
Annotation The greater than (>) and less than (<) symbols are displayed on both sides of the graph to indicate the
Reference Position
Auto Scaling
Toggles Auto Scaling On or Off.
Remote
Command
:DISPlay:SPURious:WINDow[1]:TRACe:Y[:SCALe]:COUPle 0 | 1 | OFF | ON
:DISPlay:SPURious:WINDow[1]:TRACe:Y[:SCALe]:COUPle?
Example
:DISP:SPUR:WIND:TRAC:Y:COUP OFF
:DISP:SPUR:WIND:TRAC:Y:COUP?
Couplings When Auto Scaling is ON, and the Restart front-panel key is pressed, this function automatically sets
the scale per division to 10 dB and determines the reference values based on the measurement results
When you change the value of "Scale/Div" on page 1359, "Ref Value" on page 1359 or "Scale Range"
on page 1556, Auto Scaling automatically changes to OFF
When Auto Scaling is OFF, the measurement uses the current reference level settings
When Auto Scaling is ON, the instrument automatically sets the reference level such that the absolute
limit is positioned two divisions down from the top of the display. This is the most useful setting when
searching for spurs. The algorithm used for determining the ref level is Ref Level = Absolute Limit + (2 *
1366 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)