User`s guide

Remarks
You can disable the front-panel display from the remote interface only.
Although you can specify "WINDow1" or "WINDow2" in the command, the
entire front panel display (both display lines and all annunciators except
Remote and ERROR) is disabled or enabled by this command. you cannot
disable the display lines separately.
A return to local mode by pressing the Local key (Shift, when in remote
mode) will turn the display back on.
Sending a text message to the display (see
DISPlay[:WINDow[1|2]]:TEXT[:DATA] command) overrides the display
state; this means that you can display a message even if the display is
turned off.
The display setting is not stored as part of the instrument state by the
*SAV command.
The front-panel display is automatically enabled when power is cycled,
after a Factory Reset (*RST command), or after an Instrument Preset
(SYSTem:PRESet command).