THORLABS DCU223 SERIES User Manual

253SDK (Software development Kit)
© 2010 Thorlabs
7.3.85
is_SetExternalTrigger
USB 2.0
USB 2.0
Syntax
INT is_SetExternalTrigger (HIDS hCam, INT nTriggerMode)
Description
Using is_SetExternalTrigger(), you can activate the trigger mode. If the camera is in standby
mode, it quits this mode and activates trigger mode.
In hardware trigger mode, image capture is delayed for each function call until the selected trigger
event has occurred.
In software trigger mode, an image is captured immediately when is_FreezeVideo() is called,
or a continuous triggered capture is started when is_CaptureVideo() is called. In hardware
trigger mode, you can use the is_ForceTrigger() command to trigger an image capture even if
no electric signal is present.
When you disable the trigger functionality, you can statically query the signal level at the trigger
input. This option causes the camera to change to freerun mode.
For further information on the image capture modes of the DCx camera camera, see the How To
Proceed: Image Capture section.
Input Parameters
hCam
Camera handle
nTriggerMode
Trigger mode
Trigger event
IS_SET_TRIGGER_OFF
Off
-
IS_SET_TRIGGER_HI_LO
Hardware trigger
Falling signal edge
IS_SET_TRIGGER_LO_HI
Hardware trigger
Rising signal edge
IS_SET_TRIGGER_HI_LO_SYNC
Freerun sync./hardware
trigger *
)
Falling signal edge
IS_SET_TRIGGER_LO_HI_SYNC
Freerun sync./hardware
trigger *
)
Rising signal edge
IS_SET_TRIGGER_SOFTWARE
Software trigger
Call of is_FreezeVideo()
(single frame mode)
Call of is_CaptureVideo()
(continuous mode)
IS_GET_EXTERNALTRIGGER
Returns the trigger mode setting
IS_GET_TRIGGER_STATUS
Returns the current signal level at the trigger input
IS_GET_SUPPORTED_TRIGGER_MODE
Returns the supported trigger modes
*
)
The freerun synchronisation mode is currently not supported by the DCx camera series.
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THORLABS DCU223 SERIES Specifications

General

Brand	THORLABS
Model	DCU223 SERIES
Category	Security Camera
Language	English