HP 33120A, User Manual

Page: 103 / 118

Display Control
To speed up the rate at which the function generator can make
configuration changes, or for security reasons, you may want to turn off
the front-panel display. From the remote interface, you can also display
a message containing up to 11 characters on the front panel.
The display can be enabled/disabled from the remote interface only.
•
When the display is turned off, output parameters are not sent to the
display and all 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 always
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 function generator 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, information
relating to the output waveform (such as frequency and amplitude)
is 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) state. Press the
Shift
key or execute
LOCAL 710
from the remote interface to return to the local state.
•
Remote Interface Operation :
DISPlay {OFF|ON}
Disable/enable the display
DISPlay:TEXT <
quoted string
> Display the string enclosed in quotes
DISPlay:TEXT:CLEar Clear the displayed message
The following command string shows how to display a message on the
front panel.
"DISP:TEXT ’HELLO’"
Chapter 3 Features and Functions
System-Related Operations
112