Trigger Source must be set to "Software" and Exposure Mode to "Timed".
For a quick test, the Trigger Software field in the GenICam Property Grid provides an Execute button to send a signal.
To test the configuration within a software solution, the trigger can be either sent via the the GenAPI (refer CVB Manual chapter Image Manager - GenICam Library) or the ISoftwareTrigger interface (e.g. VB.NET Grabber OCX Example) which is shown in CVB tutorials.
Also it can be used with CVB Viewer:
On arrival of a software signal, the image will be captured and processed by the application.
Be aware that there exists a standard timout interval. If the delay between the trigger signals is too large, this will result in Timout Error messages (CVB error #4).
Change the timeout value to a higher value in this case.
For details regarding the ISoftwareTrigger Interface please refer to the SDK -> Supported Interfaces chapter.