THORLABS DCU223 SERIES Description And Sdk Manual

© 2016 Thorlabs Scientific Imaging
4 Programming (SDK)
351
4.3.85 is_SetExternalTrigger
USB 2.0
USB 3.0
USB 2.0
USB 3.0
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 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, see How to proceed:
Image capture.
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_PRE_HI_LO
(Not supported by DCx
Cameras)
IS_SET_TRIGGER_PRE_LO_HI
(Not supported by DCx
Cameras)
IS_SET_TRIGGER_HI_LO_SYNC
(Not supported by DCx
Cameras)
IS_SET_TRIGGER_LO_HI_SYNC
(Not supported by DCx
Cameras)
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_MO
DE
Returns the supported trigger modes

THORLABS DCU223 SERIES Specifications

General

Brand	THORLABS
Model	DCU223 SERIES
Category	Security Camera
Language	English