Trigger Mode - THORLABS DCU223x Operation Manual And Sdk

2.1.2 Trigger Mode

In trigger mode, the sensor is on standby and starts exposing on receipt of a trigger signal. A trigger event can be
initiated by a software command (software trigger) or by an electrical signal via the camera's digital input (hardware
trigger).
This chapter describes the different trigger modes you can use with the DCx Cameras. To choose a mode, go to
the camera properties
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Note
Note on the schematic diagrams: These illustrations show a schematic view of the image capture sequence. The
sensor exposure and readout times and the transmission times depend on the camera model and settings. The
pre-processing time depends on the API functions you are using (e.g. color conversion, edge enhancement).
For more information on flash timing see the
Software trigger mode
When this mode is enabled, calling the "Snap" function triggers the capture of an image, which is then transferred
to the PC. If you call the "Live" function in this mode, the image capture is triggered continuously and images are
transferred continuously.
* Optional flash function. See also
Hardware trigger mode
When this mode is enabled, calling the
triggering just once. When the camera receives an electrical trigger signal, one image is captured and transferred.
If you call the
is_CaptureVideo()
image is captured and transferred each time an electrical trigger signal is received; the camera is then ready for
triggering again (recommended procedure).
Attention
When you use triggered image capture, the camera is only ready to process the next trigger signal after completion
of the data transfer to the PC. Trigger events that occur during image exposure or data transfer are ignored. An
internal counter records the number of ignored trigger events and can be read out from the PC.
© 2013 Thorlabs GmbH
of the uc480 Viewer application or use the
Digital In-/Output (Trigger/Flash)
Software trigger mode with continuous image capture
Digital input/output (trigger/flash)
is_FreezeVideo()
(Live) function, the camera is made ready for triggering continuously. An
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API command.
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chapter.
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(Snap) function makes the camera ready for
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2 Camera Basics
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