VTI Instruments EX1000A, User Manual

Page: 258 / 320

VTI Instruments Corp.
258 EX10xxA/RX1032/EX1044 Function Calls
vtex10xxA_set_trigger_source
F
UNCTION
P
ROTOTYPE
ViStatus vtex10xxA_set_trigger_source(ViSession vi ,ViInt16 vtb_masks[] ,ViInt16 dio_masks[] ,ViBoolean
timer_enable ,ViBoolean immediate );
F
UNCTION
P
ARAMETERS
vi = contains a session handle to the instrument. This handle is obtained by the function and remains valid until the
session is closed.
vtb_masks = a return array of four 8-bit integer values representing the enabled state of trigger events from the eight
channels of the trigger bus. Within the 8-bit field, the MSB corresponds to VTB channel 7 and the LSB corresponds
to VTB channel 0. Valid input values: 0 through 255.
dio_masks = a return array of four 8-bit integer values representing the enabled state of trigger events from the eight
channels of the digital I/O port. Within the 8-bit field, the MSB corresponds to DIO channel 7 and the LSB
corresponds to DIO channel 0. Valid input values: 0 through 255.
timer_enable = a Boolean value indicating whether the timer is enabled as a trigger event. If this parameter is set to
“1”, the timer is enabled as a trigger. If set to “0”, timer triggering is disabled.
immediate = a Boolean value indicating whether immediate is enabled as a trigger event. If this parameter is set to
“1”, immediate triggering is enabled. If set to “0”, immediate triggering is disabled.
D
ATA
I
TEM
R
ESET
V
ALUE
The trigger source is set to timer.
D
ESCRIPTION
This function sets the trigger source events. Regardless of this setting, software triggers are always enabled.
E
XAMPLE