Specifications

198 Chapter 10

Setting the Display

The E4991A provides several GPIB commands that can be applied to the entire screen (all

windows) or to a specific trace.

GPIB Commands for Entire Screen (windows)

Enable/Disable Update of Displayed Information

The following GPIB command can be used to enable/disable update of the entire screen.

• DISP:ENAB on page 354

Switch between Split Window and Overlay (Scalar Trace)

When several traces are displayed in a scalar trace, the following GPIB command can be

used to select whether one trace is displayed within one of the split windows or all of the

traces are displayed overlaid in one window.

• DISP:FORM on page 355

Disable Backlight

The E4991A is equipped with an LCD with a backlight for increased visibility. The

following GPIB command can be used to switch between turning the backlight on and off.

Note that disabling the backlight results in no visibility.

• DISP:BACK on page 354

GPIB Commands for Traces

Set Active Trace

Use the following GPIB command to set the active trace.

• DISP:TRAC{1-5}:SEL on page 358

Select Measurement Display Screen

Use the following GPIB command to select whether the measurement screen is displayed

in the graph or text (list) format.

• DISP:TRAC{1-5}:TEXT on page 359

In the text format, the following GPIB command can be used to scroll through the screen.

• DISP:TRAC{1-5}:TEXT:PAGE on page 359