Clearing The Message From The Display; Front Panel Message Semantics - Racal Instruments 1269 User Manual

Clearing The Message
From The Display
Front Panel Message
Semantics
Using The Enhanced Monitoring System 4-26
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DISPLAY:TEXT "This is My String"
is executed, then the front panel will show the following
characters in succession:
This is M
his is My
is is My
s is My S
is My St
is My Str
s My Stri
My Strin
My String
The presently programmed text string may be read using the
query:
DISPLAY:TEXT?
The EMS will reply to this query with the string enclosed in
double quotes. If a double quote is part of the displayed string,
then two consecutive double quotes will be shown in the reply
as follows:
"This has a double quote "" embedded in it"
The user string may be set to a length of 0 by sending the
command:
DISPLAY:TEXT ""
If this command is executed, the display will show nothing
UNLESS an out-of-tolerance condition is detected by the EMS.
The user message may be cleared entirely by executing the
command:
DISPLAY:TEXT:CLEAR
After this command has been executed, the EMS will behave
as if no user message has been defined. This will then return
to displaying the "System OK" or out-of-tolerance message(s).
The EMS updates the front panel display as illustrated by the
following pseudocode:
If the display state is ON then
If there is an out-of-tolerance condition then
1269 User Manual