3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
Example
:CALC:LLIN3:DATA 1E9,-20,0,2E9,-20,1,2E9,-10,1,3E9,-10,1
describes a stair-stepped limit line
Preset Limit line data is cleared by Restore Mode Defaults. However, it survives shutdown/restart of the
instrument application (including power cycle)
State Saved Saved in instrument state
Backwards
Compatibility
SCPI
:CALCulate:LLINe[1]|2|…|6:DATA
<x>,<ampl>,<co
nnect>
:CALCulate:LLINe[1]|2|…|6:DATA?
Backwards
Compatibility
Notes
In the past it was possible to query the limit trace as though it were a normal trace. The query of the
limit trace is not supported in the X-series
Merge Limit Line Data (Remote Command Only)
Adds the points with the specified values to the current limit line, allowing you to
merge limit line data. Up to two amplitude values are allowed for each X value. If
more than 200 points are entered to be merged, the first 200 points are merged,
then an error message ‘too many DATA entries’ is reported.
<x>
Frequency or time values as specified by
:CALCulate:LLINe:CONTrol:DOMain. Units are not sent in the
command but are taken to be fundamental units (Hz or seconds)
Range: –30 Gs to +30 Gs for time limits, –3 kHz to +350 GHz for frequency limits
<ampl>
Amplitude units are not sent in the command but are taken to be the current Y
Axis Unit. Up to two amplitude values can be provided for each x-axis value, by
repeating <x-axis> in the data list
Range: –1000 dBm to +1000 dBm
<connect>
connect values are either "0" or "1." A "1" means this point is connected to the
previously defined point to define the limit line. A "0" means that it is a point of
discontinuity and is not connected to the preceding point. The connect value is
ignored for the first point
Example
:CALC:LLIN1:DATA:MERG 1000000000,-20,0,2000000000,-30,1
merges the 10 GHz segment and the 20 GHz segment into limit line 1. Note that the 20 GHz segment is
connected to the next lower point, which may or may not be the 10 GHz point
Preset Fixed
Backwards
Compatibility
SCPI
:CALCulate:LLINe[1]|2|…|6:DATA:MERG
e
<x-axis>,<ampl>,<connect>
404 Spectrum Analyzer Mode User's &Programmer's Reference
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