VXI VT1422A - Manual (Page 396)

394 VT1422A Command Reference Chapter 7
TRIGger
Event Sequence
Figure 7-7 shows how the module responds to various trigger/arm configurations.
Figure 7-7. Trigger/Scan Sequence Diagram
Subsystem Syntax
TRIGger
:COUNt <trig_count>
:COUNt?
[:IMMediate]
:SOURce BUS | EXTernal | HOLD | SCP | IMMediate | TIMer | TTLTrg<n>
:SOURce?
:TIMer
[:PERiod] <trig_interval>
[:PERiod]?
Trigger Idle
State
Initiated
State
TRIG:SOUR
TIMer?
ABORT
Trig. Counter=
TRIG:COUNT?
NOTE: For continuous algorithm
execution use TRIG:COUNT 0 or INF.
This is the default setting.
Waiting for
Arm
Reset and
Start Timer
Waiting for
Trigger
Execute Control
Loop Algorithm
Update Control
Outputs
Scan Inputs
and Increment
Trig. Counter
no
no
no
yes
yes
yes
ARM Event
Trigger Event