Fluke ScopeMeter 190 Series, Programming Reference Manual

Page: 18 / 120

Page 3.7
=============================================================
ARM TRIGGER AT
-------------------------------------------------------------
Purpose:
Resets and arms the trigger system for a new acquisition.
This command is used for single shot measurements.
When the AT command is given while an acquisition is in
progress, this acquisition is aborted and the trigger
system is rearmed.
Command Syntax:
AT<cr>
Response Syntax:
<acknowledge><cr>
Example:
The following example program arms the trigger system of
the ScopeMeter with the AT command.
This means that after this command the ScopeMeter starts an
acquisition when a trigger occurs from the signal (when
exceeding the trigger level) or from a TA (Trigger
Acquisition) command.
After the AT command it is assumed that the signal amplitude
is sufficient to trigger the acquisition. If it is not, you
can use the TA (TRIGGER ACQUISITION) command to force the
acquisition to be triggered. But this is not useful if you
want the acquisition to be started on a signal edge for
synchronization purposes.
Also see the example program for the IS command, which also
uses the AT command for a single shot application.
’***************** Begin example program *****************
OPEN "COM1:1200,N,8,1,CS,DS,RB2048" FOR RANDOM AS #1
PRINT #1, "AT" ’Sends the ARM TRIGGER command.
GOSUB Acknowledge ’Input acknowledge from ScopeMeter.
CLOSE #1
END
’