3 Spectrum Analyzer Mode
3.5 ACP Measurement
The on/off switch turns Ref Level Offset on and off. Setting a value for Ref Level
Offset turns Ref Level OffsetON.
For more on using offsets, see the Ref Level Offset control description for the Swept
SA measurement.
Remote Command
:DISPlay:WINDow[1]:TRACe:Y[:SCALe]:RLEVel:OFFSet <rel_ampl>
:DISPlay:WINDow[1]:TRACe:Y[:SCALe]:RLEVel:OFFSet?
Example Set Ref Level Offset to 12.7 dB. The only valid suffix is dB. If no suffix is sent, dB will be assumed:
:DISP:WIND:TRAC:Y:RLEV:OFFS 12.7
:DISP:WIND:TRAC:Y:RLEV:OFFS?
Dependencies Appears only in SA Mode
Preset 0 dBm
State Saved Saved in instrument state
Min The range for Ref Level Offset is variable. It is limited to values that keep the reference level within the
range of -327.6 dB to 327.6 dB
Max 327.6 dB
Annotation The offset is displayed as “Ref Lvl Offset <value>” above the reference value 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 on Ref Level Offset:
: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.
Remote
Command
:DISPlay:ACPower:WINDow[1]:TRACe:Y[:SCALe]:RPOSition TOP | CENTer | BOTTom
:DISPlay:ACPower:WINDow[1]:TRACe:Y[:SCALe]:RPOSition?
Example
:DISP:ACP:WIND:TRAC:Y:RPOS CENT
:DISP:ACP:WIND:TRAC:Y:RPOS?
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
Spectrum Analyzer Mode User's &Programmer's Reference 895
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