VXI VT1422A - Manual (Page 399)

VT1422A Command Reference 397 Chapter 7
TRIGger
•
While TRIG:SOUR is IMM, simply INITiate the trigger system to start a
measurement scan.
•
When Accepted: Before INIT only.
•
Related Commands: ABORt, INITiate, *TRG
•
*RST Condition: TRIG:SOUR TIMER
•
Send with VXIplug&play Function: hpe1422_cmd(...)
Usage TRIG:SOUR EXT
Hardware trigger input at Connector
Module
TRIGger:SOURce?
TRIGger:SOURce? returns the current trigger source configuration.
•
Returned Value: Discrete; one of BUS, EXT, HOLD, IMM, SCP, TIM, or
TTLT0 through TTLT7. The data type is string. See the TRIG:SOUR command
for more response data information.
•
Send with VXIplug&play Function: hpe1422_cmdString_Q(...)
Usage TRIG:SOUR?
ask VT1422A to return trigger source
configuration
TRIGger:TIMer[:PERiod]
TRIGger:TIMer[:PERiod] <trig_interval> sets the interval between scan triggers.
Used with the TRIG:SOUR TIMER trigger mode.
Parameters
Comments •
In order for the TRIG:TIMER to start it must be Armed. For information on
timer arming see the ARM subsystem in this command reference.
•
The default interval is 10E-3 seconds. interval may be specified in seconds,
milliseconds (ms) or microseconds (us). For example; 0.0016, 1.6 ms or
1600 us. The resolution for <interval> is 100 µs.
•
TRIG:TIMer periods shorter than the value returned from the
ALG[:EXPL]:TIME? command may result in "Trigger too fast" errors.
•
When Accepted: Before INIT only.
Parameter
Name
Parameter
Type
Range of
Values
Default
Units
trig_interval numeric (float32)
(string)
100E-6 to 6.5536 |
MIN | MAX
seconds