Vtex1629_Set_Trigger_Source - VTI Instruments EX1629 User Manual

F P
UNCTION ROTOTYPE
ViStatus vtex1629_set_trigger_source (ViSession vi, ViInt32 triggerSource);
F P
UNCTION ARAMETERS
vi = contains a session handle to the instrument. This handle is obtained by the function and remains valid until the
session is closed.
triggerSource = an integer input value that indicates the desired source to be monitored for trigger events. Valid
input values: 0 to 17.
D I R V
ATA TEM ESET ALUE
triggerSource = 0 (immediate)
D
ESCRIPTION
This function sets the trigger source on the EX1629. Possible values for the trigger source include:
Decimal Hex
Value Value
0 0x00 VTEX1629_TRIG_SRC_IMMEDIATE
1 0x01 VTEX1629_TRIG_SRC_PATTERN
2 0x02 VTEX1629_TRIG_SRC_LXI0_POS
3 0x03 VTEX1629_TRIG_SRC_LXI1_POS
4 0x04 VTEX1629_TRIG_SRC_LXI2_POS
5 0x05 VTEX1629_TRIG_SRC_LXI3_POS
6 0x06 VTEX1629_TRIG_SRC_LXI4_POS
7 0x07 VTEX1629_TRIG_SRC_LXI5_POS
8 0x08 VTEX1629_TRIG_SRC_LXI6_POS
9 0x09 VTEX1629_TRIG_SRC_LXI7_POS
10 0x0A VTEX1629_TRIG_SRC_LXI0_NEG
11 0x0B VTEX1629_TRIG_SRC_LXI1_NEG
12 0x0C VTEX1629_TRIG_SRC_LXI2_NEG
13 0x0D VTEX1629_TRIG_SRC_LXI3_NEG
14 0x0E VTEX1629_TRIG_SRC_LXI4_NEG
15 0x0F VTEX1629_TRIG_SRC_LXI5_NEG
16 0x10 VTEX1629_TRIG_SRC_LXI6_NEG
17 0x11 VTEX1629_TRIG_SRC_LXI7_NEG
Immediate (0): an immediate trigger source. After receiving the arm event, the trigger state machine will bypass the
trigger layer and will automatically begin to acquire data.
Pattern (1): this trigger source allows the EX1629 to accept trigger events from multiple sources. The EX1629 can
be configured to accept trigger events on LXI Trigger Bus channels, digital I/O channels, a timer, and software
triggers. The EX1629 can simultaneously accept any combination of these events. The specific pattern is set with the
vtex1629_set_pattern_trig_configuration command.
LXI n Positive Edge (2 – 9): these trigger sources refer to trigger events coming from the LXI Trigger Bus and will
cause the EX1629 to trigger on the positive edge of signals coming into the LXI Trigger Bus.
LXI n Negative Edge (10 – 17): these trigger sources refer to trigger events coming from the LXI Trigger Bus and
will cause the EX1629 to trigger on the negative edge of signals coming into the LXI Trigger Bus.
E
XAMPLE
ViSession instrumentHandle;
ViStatus status;
...
status = vtex1629_set_trigger_source(instrumentHandle, VTEX1629_TRIG_SRC_LXI4_POS);
EX1629 Command Set

vtex1629_set_trigger_source

#define armSource Description
Immediate
Pattern
LXI 0 Positive Edge
LXI 1 Positive Edge
LXI 2 Positive Edge
LXI 3 Positive Edge
LXI 4 Positive Edge
LXI 5 Positive Edge
LXI 6 Positive Edge
LXI 7 Positive Edge
LXI 0 Negative Edge
LXI 1 Negative Edge
LXI 2 Negative Edge
LXI 3 Negative Edge
LXI 4 Negative Edge
LXI 5 Negative Edge
LXI 6 Negative Edge
LXI 7 Negative Edge
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