396 VT1422A Command Reference Chapter 7
TRIGger

TRIGger[:IMMediate]

TRIGger[:IMMediate] causes one trigger when the module is set to the TRIG:SOUR
BUS or TRIG:SOUR HOLD mode.

Comments •This command is equivalent to the *TRG common command or the IEEE-488.2

"GET" bus command.
•Related Commands: TRIG:SOURCE
•Use VXIplug&play function: hpe1422_trigImm(...)
Usage TRIG:IMM Use TRIGGER to start a measurement scan

TRIGger:SOURce

TRIGger:SOURce <trig_source> configures the trigger system to respond to
the trigger event.
Parameters
Comments •The following table explains the possible choices.
Note The ARM system only exists while TRIG:SOUR is TIMer. When TRIG:SOUR
is not TIMer, SCPI compatibility requires that ARM:SOUR be IMM or an
Error -221,"Settings conflict" will be generated.
Parameter
Name Parameter
Type Range of
Values Default
Units
trig_source discrete (string) BUS| EXT | HOLD | IMM | SCP | TIM
|TTLTrg<n> none
BUS TRIGger[:IMMediate], *TRG, GET (for GPIB)
EXTernal “TRG” signal on terminal module
HOLD TRIGger[:IMMediate]
IMMediate The trigger event is always satisfied.
SCP SCP Trigger Bus (future SCP Breadboard)
TIMer The internal trigger timer
TTLTrg<n> The VXIbus TTLTRG lines (n=0 through 7)