Command Syntax

:MEASure:TDEQ:LHTime <double>

Where <double> is the position in UI (unit interval).

Query Syntax

:MEASure:TDEQ:LHTime?

Description

Sets the position in UI (unit interval) of the left of two measurement histogram windows for a :MEASure:EYE:TDECQ measurement. To position the right histogram window, use the :MEASure:TDEQ:RHTime command. However, before you can position the histograms, you must turn histogram time optimization off with the :MEASure:TDEQ:OHTime command.

This command is equivalent to the Left Histogram Position setting which is located in the TDECQ Configuration tab of the PAM-N Analysis Setup dialog. To watch how the histogram changes while you adjust this setting, display the histograms on the waveform.

The :MEASure:TDEQ:LHTime command should always be followed with a *OPC? query for program timing.

Although this method lets you separately adjust the histograms to different offsets from the center UI, the normal method of positioning the histogram windows is by setting the histogram spacing using the :MEASure:TDEQ:OHSeparation command.

Histogram Settings

Setting	Range	Default Value
Left Histogram Position	0.25 to 0.50 UI	0.45 UI
Right Histogram Position	0.50 to 0.75 UI	0.55 UI