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• Using Bus Triggers: To trigger the switchbox with
TRIGger:SOURce BUS selected, use the IEEE 488.2 common
command *TRG or the GPIB Group Execute Trigger (GET)
command.
• Trig Out Port Shared by Switchboxes: See the OUTPut command.
• Related Commands: ABORt, [ROUTe:]SCAN.
• *RST Condition: TRIGger:SOURce IMMediate
Examples Scanning Using External Triggers:
This example uses external triggering (TRIG:SOUR EXT) to scan channels
00 through 03 of a single-module switchbox. The trigger source to advance
the scan is the input to the "Event In" BNC on an Agilent E1300B/E1301B
Mainframe. When INIT is executed, the scan is started and channel 00 is
closed. Then each trigger received at the "Event In" BNC advances the scan
to the next channel.
TRIG:SOUR EXT Select external triggering
SCAN (@100:103) Scan channels 00 through 03
INlT Begin scan, close channel 00
trigger externally Advance scan to next channel
Scanning Using Bus Triggers:
This example uses bus triggering (TRIG:SOUR BUS) to scan channels 00
through 03 of a single-module switchbox. The trigger source to advance the
scan is the *TRG command (as set with TRIGger:SOURce BUS). When
INIT is executed, the scan is started and channel 00 is closed. Then, each
*TRG command advances the scan to the next channel.
TRIG:SOUR BUS Select interface (bus) triggering
SCAN(@100:103) Scan channels 00 through 03
INIT Start scan, close channel 00
loop statement Loop to scan all channels
*TRG Advance scan using bus triggering
increment loop Increment loop count
:SOURce? TRIGger:SOURce? returns the current trigger source for the switchbox.
Command returns BUS, EXT, HOLD, or IMM for sources BUS, EXTernal,
HOLD, or IMMediate, respectively.
Example Query Trigger Source:
This example sets external triggering and queries the trigger source. Since
external triggering is set, TRIG:SOUR? returns EXT.
TRIG:SOUR EXT Set external trigger source
TRIG:SOUR? Query trigger source
60 Agilent E1364A Form C Switch Command Reference Chapter 5