3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
Remote
Command
:CALCulate:LLINe[1]|2|…|6:OFFSet:X <value>
:CALCulate:LLINe[1]|2|…|6:OFFSet:X?
<value> = <freq> if Limit X-Axis Unit is Frequency
<value> = <time> if Limit X-Axis Unit is Time
Example Set the X axis offset to –50 MHz:
:CALC:LLIN:OFFS:X -50MHZ
Apply the X axis offset to all points in the limit line, then reset the X axis offset to zero:
:CALC:LLIN:OFFS:UPD
Preset 0 Hz if Limit X-Axis Unit is Frequency
0 s if Limit X-Axis Unit is Time
State Saved Saved in instrument state, survives Preset
Min/Max –/+500 GHz
Annotation When the offset is non-zero, the title of the limit table will include the words “[Offset Pending]”
Y Offset
Offsets all segments in the limit line by some specified amplitude.
Remote
Command
:CALCulate:LLINe[1]|2|…|6:OFFSet:Y <rel ampl>
:CALCulate:LLINe[1]|2|…|6:OFFSet:Y?
Example Set the Y axis offset to –3 dB:
:CALC:LLIN:OFFS:Y -3 dB
Apply the Y axis offset to all points in the limit line, then reset the Y axis offset to zero:
:CALC:LLIN:OFFSet:UPD
Preset 0 dB
State Saved Saved in instrument state
Min/Max –/+Infinity
Annotation When the offset is non-zero, the title of the limit table includes the words “[Offset Pending]”
Apply Offsets to Limit Table
Adds the X and Y offsets to each point in the limit table, then resets the X and Y
offset values to zero. This has no effect on the position of the limit trace.
For example, if the X offset is –10 MHz and the Y offset is 1 dB, the values in the limit
table are updated as follows: 10 MHz is subtracted from each X value, 1 dB is added
to each Y value. The offset values are then reset to zero. The limit trace is not moved,
and the limit table is updated to accurately reflect the currently-displayed limit
trace.
Spectrum Analyzer Mode User's &Programmer's Reference 393
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