Parallel-port cameras that support triggering require a different type of port, with a different pinout. See the Parallel-Port Camera Setup page for details.

The 16 pin header on the controller (named TRIG/PORT) can be connected to a 15 pin 'D' connector or other suitable connector via a header and ribbon cable to the back of the computer. Using a 15 pin 'D' connector interface, the pin list is as follows:

Connector Installation
The 15-pin connector/plate is connected to the header via a ribbon cable. To install, follow these steps:

1. Turn the computer power OFF.
2. Install the DB15/Plate end of the cable in an available card slot opening.
3. Insert the header connector on the controller port marked "TRIG/PORT". Make sure that the red stripe on the ribbon cable is on the side marked '1' on the controller board (as indicated in the illustration).
4. The port is now ready for use.

Trigger Operation In MaxIm DL CCD

Click the "CCD" button in the "Setup" tab of the MaxIm CCD window (see below).

Next, click the scroll arrow beside the "External Trigger" on/off selector box. Choose the "On" setting, then click "Ok."

When "External Trigger" is set to on, clicking the "Expose" button under the "Expose" tab of the MaxIm CCD window will set the camera to wait for a trigger. When the (user-supplied) trigger pulse is received, the exposure begins. Remember, when the "wait for trigger" command is sent to the camera, flushing stops and dark current begins to accumulate. Electro-luminescence (or "amplifier glow") will appear in the upper lefthand corner of the images when there is a lengthy (10 seconds or more) wait period. For best results, send the "wait for trigger" command only a few seconds prior to triggering the exposure.