THORLABS DCC1 45 Series, Руководство пользователя

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100 DCx camera
© 2010 Thorlabs
7.2.3.2
Event / Message Handling
Triggering Events for Single-Frame Capture
The following figure shows the time sequence when triggering the
IS_TRIGGER
and
IS_FRAME
events. The camera is prepared for triggered capture using the
is_SetExternalTrigger()
command. An incoming trigger signal at the camera starts the exposure and the subsequent image
transfer. Upon completion of the data transfer, the
IS_TRIGGER
event signals that the camera is
ready for the next capture. The
IS_FRAME
event is set once pre-processing (e.g. colour conversion) is
complete and the finished image is available in the user memory.
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. colour conversion, edge
enhancement).
Figure 48 Events in hardware trigger mode
Events in Live Mode (Image Sequence)
The following figure shows the time sequence when triggering the
IS_FRAME
and
IS_SEQUENCE
events. The camera is set to live mode using
is_CaptureVideo()
so that it continuously
captures frames. The
IS_FRAME
event is set once pre-processing (e.g. colour conversion) is
complete and a finished image is available in the user memory. The
IS_SEQUENCE
event is set after
one cycle of a storing sequence has been completed (see also
is_AddToSequence()
).
Figure 49
Events in live mode
*
)
Optional function. The start time and duration of the flash signal are defined by the Flash delay and
Duration parameters (see
is_SetFlashDelay()
).
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