HP ESA-E Series Programmer's Manual page 167

Front Panel
Access:
Set Limit Line X-axis Units
:CALCulate:LLINe:CONTrol:DOMain FREQuency|TIME
:CALCulate:LLINe:CONTrol:DOMain?
Selects how the limit line segments are defined: according to frequency,
or according to the sweep time setting of the spectrum analyzer.
Changing this setting deletes all existing limit data from the analyzer.
NOTE
In other words, if a limit line has already been defined, changing the
type clears the existing limit line.
Factory Preset
and *RST:
Remarks:
Front Panel
Access:
Control Limit Line Frequency Interpolation
:CALCulate:LLINe[1]|2:CONTrol:INTerpolate:TYPE
LOGarithmic|LINear
:CALCulate:LLINe[1]|2:CONTrol:INTerpolate:TYPE?
Selects the type of interpolation done for the frequency values of the
designated limit line when comparing to measured data. This only
applies in the frequency mode. This function does not work in zero span
(for example, in the time domain.)
Default Unit:
Remarks:
Front Panel
Access:
Chapter 5
limit line is not affected by this command.
Display, Limits, Properties, Limits Fixed Rel
not affected by Preset
For TIME, the limit line segments are placed on the
spectrum analyzer display with respect to the sweep
time setting of the analyzer, with 0 at the left edge of
the display.
For FREQuency, segments are placed according to the
frequency that is specified for each segment.
Display, Limits, Properties, X Axis Units Freq Time
Log
Once this function is defined, the selected type is
persistent. Persistent means that it retains the setting
previously selected, even through a power cycle.
Display, Limits, Modify, Freq Interp Log Lin
Language Reference
CALCulate Subsystem
5-13