Xtium2-CL MX4 User's Manual
CamExpert Quick Start
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External Trigger
Source
Specifies the physical input source the external frame
trigger is connected to or which trigger input is used on
the acquisition device.
Note: to assign the external trigger source to a GPIO it
must be reserved; By default, boards are shipped with
User Interface General Inputs 1 & 2 reserved for External
Triggers and User Interface General Outputs 1 & 2
reserved for Strobe Outputs.
Refer to
User Interface GIOs Reservation
for more
information on using the Teledyne DALSA Device
Manager tool to reserve GPIOs.
External Trigger
Minumum Duration
(in
μ
s)
CORACQ_PRM_EXT_TRIGGER_DURATION
Minimum external trigger pulse duration (in µs), needed
for the pulse to be acknowledged by the acquisition
device. If the duration of the pulse is shorter, the pulse is
ignored.
This feature is useful for trigger pulse debouncing. If the
value is ‘0’, no validation is performed
Frame Count per
External Trigger
CORACQ_PRM_EXT_TRIGGER_FRAME_COUNT
Number of images to acquire upon receiving an external
trigger. Valid range is 1-262142.
Note, infinite frame count (-1) is not supported.
External Trigger
Delay
Sets the delay between the reception of the trigger signal
and the start of the image acquisition. Units are specified
by the External Trigger Delay Time Base parameter.
External Trigger
Delay Time Base
CORACQ_PRM_EXT_TRIGGER_DELAY_TIME_BASE
Sets the external trigger delay time base.
Possible values:
ns
nanoseconds
us
microseconds
ms
milliseconds
line
line counts
line trigger
external line trigger or shaft
encoder pulse counts (after drop
and/or multiply factors)
shaft encoder
shaft encoder pulse counts (after
drop and/or multiply factors)
frame
image frame counts
External Trigger
Ignore Delay
CORACQ_PRM_EXT_TRIGGER_IGNORE_DELAY
Sets the time delay, in µsec, where if another external
trigger occurs, it is ignored. Valid range is 0-85899344.
The start of the delay (time '0') is the end of the next
vertical sync for analog cameras, or the beginning of the
next frame valid for digital cameras, following a valid
external trigger.
