Agilent Technologies 83620B

SOURce
The SOURce command selects the trigger source for an
event-detection state. Only one source can be sp ecied at a time,
and all others are ignored. Sending *RST sets SOURce to IMMediate.
The most commonly used sources are:
BUS
The event detector is satised by either Group Execute
Trigger( < GET > )ora *TRG command. < GET > is a low level
GPIB message that can b e sent using the TRIGGER command in
HP BASIC.
EXTernal
An external signal connector is selected as the source.
IMMediate
Qualied events are generated automatically. There is no waiting
for a qualied event.
Getting Started Programming 1-119