External Trigger Connector
VCE-PRO
The external trigger for the VCE-PRO card consists of a 3.5mm female
stereo phono jack. The pin-out for the mating phono plug is illustrated
below.
3.5mm Stereo Plug
Trigger_In -
Connects to pin 2 of the Jack
Trig
Connects to pin 3 of the Jack
Not used
Figure 4 – VCE-PRO External Trigger – mating plug
VCE-PRO-F
The external trigger of the VCE-PRO-F card utilizes pins on the 15 pin
connector. Pins 13 and 14 are used for the Trig and Trigger_In –
signals, respectively.
Functionality
If external triggering is enabled, the VCE-PRO will use the state of the
external trigger signal to qualify when to start ( and optionally end )
capturing video images to disk. The VCE-PRO will wait until the trigger
condition ( as specified in the ‘Trigger behavior’ field of the ‘Trigger
Capture Settings’ dialog ) has been satisfied before beginning to store
video images to the disk. It will stop storing video images on the disk
when the programmed end condition has been met. The following external
trigger conditions can be specified:
Rising Edge
Image capture begins when a ‘logic-0’ to ‘logic-1’ transition
occurs on the trigger inputs.
Image capture ends when ‘limit number of frames to’ or ‘limit time
to’ has been met.
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