User`s guide

Specifying the Trigger Type

6-17

vid.FramesAcquired

ans =

After it executes the trigger and acquires the specified number of frames, the video

input object stops running.

isrunning(vid)

ans =

To execute another hardware trigger, you must first restart the video input object.

Note that this deletes the frames acquired by the first trigger. To execute multiple

triggers, specify a value for the TriggerRepeat property. See “Specifying Multiple

Triggers” on page 6-32 for more information.

Clean up — Always remove image acquisition objects from memory, and the

variables that reference them, when you no longer need them.

delete(vid)

clear vid

Setting DCAM-Specific Trigger Modes

You can now use all trigger modes and all trigger inputs that DCAM cameras support.

Previous toolbox releases supported only trigger mode 0. Support for additional trigger

modes and inputs do not affect any existing code you use.

Control trigger functionality using the triggerinfo and triggerconfig functions

and the triggersource property. Before R2010a, one triggersource was available,

externalTrigger. Selecting externalTrigger configures the camera to use trigger

mode 0 with trigger source 0.

The triggersource property is now composed of the trigger type (internal or external),

the trigger source (0, 1, 2, etc.), and the mode number (0 through 5, 14 and 15). The

following table summarizes the options.

Trigger Mode Parameter External Source Multiple Frames Per Trigger

0 none yes yes