Chapter 3 Front-Panel Operation
System-Related Operations
44
Display Control
For security reasons, you may want to turn off the front-panel display. From the remote
interface, you can display a 12-character message on the front panel.
• The display can be enabled / disabled from the remote interface only.
• When the display is turned off, outputs are not sent to the display and all
annunciators are disabled except the
ERROR annunciator. Front-panel operation
is otherwise unaffected by turning off the display.
• The display state is stored in volatile memory; the display is always enabled when
power has been off, after a remote interface reset, or after returning to local from
remote.
• You can display a message on the front panel by sending a command from the
remote interface. The power supply can display up to 12 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, outputs 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.
• The display state is automatically turned on when you return to the local (front
panel) operation. Press
(Local) key to return to the local state from the
remote interface.
• Remote interface operation:
DISP {OFF|ON} Disable / enable the display
DISP:TEXT <quoted string> Display the string enclosed in quotes
DISP:TEXT:CLE Clear the displayed message
The following statement shows how to display a message on the front panel from a
Hewlett-Packard controller.
‘‘DISP:TEXT ‘HELLO’ ’’
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