Event / Message Handling - THORLABS DCU223x Operation Manual And Sdk

4.2.3.2 Event / Message Handling

Triggering events for single frame capture
The following figure shows the time sequence when triggering the IS_SET_EVENT_EXTTRIG and
IS_SET_EVENT_FRAME
is_SetExternalTrigger()
subsequent image transfer. Upon completion of the data transfer, the IS_SET_EVENT_EXTTRIG event signals that
the camera is ready for the next capture. The IS_SET_EVENT_FRAME event is set once pre-processing (e.g. color
conversion) is complete and the finished image is available in the user memory.
Note
The following illustrations show a schematic view of the image capture sequence. The sensor exposure and
readout times and the transmission times depend on the camera settings. The pre-processing time depends on the
API functions you are using (e.g. color conversion, edge enhancement).
* Optional function. The start time and duration of the flash signal are defined by the "Flash delay" and "Duration"
parameters (see
is_IO()
Events in live mode (image sequence)
The following figure shows the time sequence when triggering the
events. The camera is set to live mode using
The
IS_SET_EVENT_FRAME
is available in the user memory. The
completed (see also
is_AddToSequence()
* Optional function. The start time and duration of the flash signal are defined by the "Flash delay" and "Duration"
parameters (see
is_IO()
© 2013 Thorlabs GmbH
events. The camera
command. An incoming trigger signal at the camera starts the exposure and the
327
).
280
is_CaptureVideo()
event is set once pre-processing (e.g. color conversion) is complete and a finished image
IS_SET_EVENT_SEQ
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).
280
is prepared
IS_SET_EVENT_FRAME
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event is set after one cycle of a storing sequence has been
).
4 Programming (SDK)
for triggered capture
and
so that it continuously captures frames.
using the
IS_SET_EVENT_SEQ
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