3 Features and Functions
196 Keysight 34980A Mainframe User’s Guide
Front-Panel Display Control
For security reasons or for a slight increase in measurement rates, you may want
to turn off the front-panel display. From the remote interface, you can also display
up to 18 characters on the upper line of the front-panel display.
– You can disable the front-panel display only by sending a command from the
remote interface (i.e., you cannot disable the front panel while in local
operation).
– When disabled, the entire front-panel display goes dark and all display
annunciators except ERROR, HOT, and Safety Interlock are disabled.
– 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).
– You can display a message on the front panel by sending a command from the
remote interface. The instrument can display up to 18 characters on the upper
line of the front-panel display; any additional characters are truncated (no
error is generated). You can use letters (A-Z), numbers (0-9), and special
characters like “@”, “%”, “*”, etc.
Use the “#” character to display a degree symbol ( ° ). Commas, periods, and
semicolons share a display space with the preceding character, and are not
considered individual characters.
– While a message is displayed on the front panel, readings from a scan or
monitor are not sent to the front-panel display.
– Sending a text message to the display overrides the display state; this means
that you can display a message even if the display is turned off. In addition,
pressing any front-panel key will clear the text message.
Remote Interface Operation:
The following command turns off the
front-panel display.
DISPLAY OFF
The following command displays a message on the front panel and turns on the
display if currently disabled (the quotes are not displayed).
DISPLAY:TEXT "SCANNING ..."
To clear the message displayed on the front panel (without changing the display
state), send the following command.
DISPLAY:TEXT:CLEAR
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