© 2016 Thorlabs Scientific Imaging210
DCx Camera Functional Description and SDK Manual
Example
UINT nRatio = 50;
INT nRet = is_Exposure(m_hCam, IS_EXPOSURE_CMD_SET_DUAL_EXPOSURE_RATIO,
(void*)&nRatio, sizeof(nRatio));
4.3.27 is_ForceTrigger
Syntax
INT is_ForceTrigger (HIDS hCam)
Description
You can use is_ForceTrigger() to force a software-controlled capture of an image while a capturing
process triggered by hardware is in progress. This function can only be used if the triggered
capturing process was started using the IS_DONT_WAIT parameter.
Input parameters
Return values
IS_CANT_COMMUNICATE_WITH_DRIVER
Communication with the driver failed because
no driver has been loaded.
An attempt to initialize or select the camera
failed (no camera connected or initialization
error).
One of the submitted parameters is outside the
valid range or is not supported for this sensor or
is not available in this mode.
An IO request from the uc480 driver failed.
Possibly the versions of the uc480.dll (API) and
the driver file (uc480_usb.sys) do not match.
Function executed successfully
Related functions
is_FreezeVideo()
is_CaptureVideo()
is_SetExternalTrigger()
Example
Enable trigger and wait 1 second for the external trigger. If no trigger signal has arrived, force an
exception using is_ForceTrigger().
HANDLE hEvent = CreateEvent(NULL, TRUE, FALSE, "");
if ( hEvent != NULL )
{
is_InitEvent(hCam, m_hEvent, IS_SET_EVENT_FRAME);
is_EnableEvent(hCam, IS_SET_EVENT_FRAME);