User's Manual

R e m o t e C o n t r o l a n d P r o g r a m m i n g R e f e r e n c e f o r t h e F L U K E 1 9 0 f a m i l y o f S c o p e M e t e r ® t e s t t o o l s
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AT ARM TRIGGER
Purpose: Resets and arms the trigger system for a new acquisition. This command can also be
used for single shot acquisitions. When the AT command is given while an
acquisition is in progress, this acquisition is aborted and the trigger system is
rearmed. The command can also be used to go from other mdoes (e.g. from Replay
mode) to ‘live’ acquisition mode.
Command Syntax:
AT<cr>
Response Syntax:
<ackn><cr>
Notes:
• Also see the example program for the IS command, which uses the AT command
for a single shot application.
• The <ackn> is sent only once the ScopeMeter has completed rearming the
acquisition system
Example: The following example program (see next page) arms the trigger system of the
ScopeMeter using the AT command. This means that after this command the
ScopeMeter starts an acquisition as soon as a trigger is generated by the actual
signal (thus: when signal exceeds the trigger level) or from a TA (Trigger Acquisition)
command.
After the AT (Arm Trigger) command it is assumed that the signal amplitude is
sufficient to actually trigger the acquisition. If not, you can use the TA (TRIGGER
ACQUISITION) command to force the acquisition to start. This is not useful, however,
if you want the acquisition to be actually started by a signal transition, for
synchronization purposes.