Agilent Technologies 35670A Manual page 641

To select the analyzer's GPIB connector (also on the rear panel) send BUS. The analyzer is triggered
when you send any of the following GPIB commands:
*TRG
TRIG:IMM
Group Execute Trigger (GET)
GET is a bus management command. See "Command and Data Modes" in the GPIB Programmer's
Guide for more information.
Note
The analyzer must be waiting to trigger when it receives an external trigger signal or bus
trigger command, otherwise the signal or command is ignored.
Bit 5 of the Operation Status condition register is set to 1 when the analyzer is waiting to
trigger.
TRIGger
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