IEEE-488 Reference
5-126
Response messages: 1 to 9999 (for finite count)
+9.9e37 (for infinite count)
These commands are used to specify how many times operation will loop around in the specified
layer of operation. For example, if the channel count (:trig:coun) is set to 10, operation will con-
tinue to loop around in the Trigger Layer until 10 channels are scanned. After the 10th channel,
operation will proceed back up to Arm Layer 2.
If you select a finite channel count (:trig:coun) that is greater than the scan-list-length, the first
scan will end after the programmed number of channels are scanned. If programmed for another
scan, the scan process will continue from the last scanned channel.
If you select an infinite channel count (:trig:coun), the scan will loop back to the beginning of
the scan list after all channels in the list have been scanned. This process will continue indefi-
nitely.
Note that this command is coupled to :TRIGger:COUNt:AUTO (auto-count). When auto-count
is enabled, the channel count is set to the scan-list-length. When :TRIGger:COUNt is used to
set the channel count, auto-count will automatically disable.
10 OUTPUT 707; “:trig:coun 10; coun?”
20 ENTER 707; A$
30 PRINT A$
40 END
Line 10 Sets the channel count to 10, and then queries the programmed arm count.
Line 20 Addresses the 7001 to talk.
Line 30 Displays the programmed channel count (10).
:AUTO <b>
:TRIGger[:SEQuence[1]]:COUNt:AUTO <b> Control auto-count for Trigger Layer
<b> = 1 or ON Enable auto-count (scan-list-length)
= 0 or OFF Disable auto-count
:trig:coun:auto <b>
Power-up Saved power-on setup
*RST OFF
:SYSTem:PRESet ON
Description
Programming
example
Parameters
Short-form
format
Defaults
Trigger subsystem
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