Agilent Technologies E1300B, E1301B user manual TRIGger SOURce?, Parameter Value Source of Trigger

			TRIGger :SOURce?
Comments	• The following table explains the possible choices.
		Parameter Value	Source of Trigger
		BUS	Group Execute Trigger (GET) bus command,
			*TRG common command, or TRIGger
			command.
		EXTernal	“Event In” signal at rear panel BNC
			connector, or TRIGger command.
		HOLD	Only the TRIGger command will cause
			trigger.
		IMMediate	The trigger signal is always true (continuous
			triggering).

• While an instrument which uses the "Event In" signal has EXT set, no other instrument which uses the "Event In" signal may set EXT, or an error 1500 "External trigger source already allocated" will result.

• While TRIG:SOUR is IMM, you need only INITiate the trigger system to start the Pacer.

• Related Commands: ABORt, INITiate, *TRG

• *RST Condition: TRIG:SOUR IMM

Example Specifying the Trigger Source.
TRIG:SOUR HOLD	trigger source is TRIG
	command
SOUR:PULS:COUN 1E3	output 1000 Pacer pulses
SOUR:PULS:PER .1 S	pulse period set to .1 second
TRIG:DELAY .75 S	start Pacer .75 sec after trigger
INIT	go to Wait For Trigger state
TRIG	trigger the Pacer to output
	pulses.

:SOURce? TRIGger:SOURce? returns the current trigger source configuration. Response data can be one of; BUS, EXT, HOLD, or IMM. See the TRIG:SOUR command for more response data information.

Example Querying the Trigger Source.
TRIG:SOUR HOLD	trigger source is TRIG
	command
TRIG:SOUR?	ask System Instrument to
	return trigger source
	configuration
enter statement	input selection of trigger source

System Instrument Command Reference 7-53