8 Frequency Scan Measurement
Meas Setup
Relative to RL
Chooses whether the limit line amplitude points are coupled to the instrument reference level, and
whether the amplitude points are expressed as an offset from the instrument reference level.
For example, assume you have a limit line, and the reference level at –10 dBm. If Relative to RL is “Off”,
entering a limit line segment with an amplitude coordinate of –20 dB displays the limit line segment at –20
dBm, and the limit line segment will not change amplitude if the reference level amplitude changes. If
Relative to RL is “On”, entering a limit line segment with an amplitude coordinate of –20 dB displays the
limit line segment at RL – 20 dB, or –30 dBm. Furthermore, if the reference level amplitude changes to –30
dBm, the limit line segment will be 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 analyzer.
Key Path
Meas Setup, Limits, Properties, Fixed/Relative
Remote Command
:CALCulate:FSCan:LLINe[1]|2|...|6:AMPLitude:CMODe:RELative ON | OFF | 1
| 0
:CALCulate:FSCan:LLINe[1]|2|...|6:AMPLitude:CMODe:RELative?
Example CALC:FSC:LLIN:AMPL:CMOD:REL ON Makes limit line 1 relative to the reference level amplitude.
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.
Range On|Off
Initial S/W Revision A.07.00
Description
Provides a description of up to 60 characters by which you can easily identify the limit. The descriptions will
be stored in the exported file and can be displayed in the active function area by selecting them as the
active function, if desired to be in a screen dump.
Key Path
Meas Setup, Limits, Properties
Remote Command
:CALCulate:FSCan:LLINe[1]|2|...|6:DESCription “string”
:CALCulate:FSCan:LLINe[1]|2|...|6:DESCription?
Example CALC:FSC:LLIN:DESC “European Emissions”
Preset “” (null String), not affected by Mode Preset, preset by Restore Mode Defaults.
State Saved Saved in instrument state.
Backwards
Compatibility SCPI
:CALCulate[1]|2:LIMit[1]|2|...|6:NAME
Backwards Compatibility
SCPI Notes
The suffix [1]|2 is irrelevant to the measurement, they are added solely for remote language
compatibility.
Initial S/W Revision A.07.00
488 EMI Receiver Mode Reference
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