3 Features and Functions
106 Keysight 34420A User’s Guide
Display Control
To speed up your measurement rate, or for security reasons, you may want to turn
off the front-panel display. From the remote interface, you can also display a
11-character message on the front panel. See page 54 for information about the
number of digits displayed.
– When the display is turned off, readings are not sent to the display and all
display annunciators except ‘ERROR’ and ‘Shift’ are disabled. Front-panel
operation is otherwise unaffected by turning off the display.
– The display state is stored in volatile memory; the display is enabled when
power has been off or after a remote interface reset.
– You can display a message on the front panel by sending a command from the
remote interface. The meter can display up to 11 characters of the message on
the front panel; any additional characters are truncated. Commas, periods,
and semicolons share a display space with the preceding character, and are
not considered individual characters. When a message is displayed, readings
are not sent to the display.
– Sending a message to the display from the remote interface overrides the
display state; this means that you can display a message even if the display is
turned off.
– Front-panel operation: set the display state under the 5: DISPLAY command in
the SYStem menu.
The display always turns on for menu operation; this means that even when
the display is turned off, you can still operate the menu.
– Remote operation: use the following commands to control the display:
DISPlay {OFF|ON} disable/enable the display
DISPlay:TEXT <quoted string> display the string enclosed in quotes
DISPlay:TEXT:CLEar clear the message in the display
The following statement shows how to display a message on the front panel
from a Hewlett-Packard controller.
OUTPUT 722; "DISP:TEXT ’HELLO’"
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