User`s guide

6 Acquiring Image Data
6-4
Overview of Data Logging
Trigger Properties
The video input object supports several properties that you can use to configure aspects
of trigger execution. Some of these properties return information about triggers.
For example, to find out when the first trigger occurred, look at the value of the
InitialTriggerTime property. Other properties enable you to control trigger behavior.
For example, you use the TriggerRepeat property to specify how many additional times
an object should execute a trigger.
The following table provides a brief description of all the trigger-related properties
supported by the video input object. For information about how to set these properties,
see “Setting the Values of Trigger Properties” on page 6-6.
Property Description
InitialTriggerTime Reports the absolute time when the first trigger
executed.
TriggerCondition Specifies the condition that must be met for a trigger to
be executed. This property is always set to 'none' for
immediate and manual triggers.
TriggerFcn Specifies the callback function to execute when a trigger
occurs. For more information about callbacks, see “Using
Events and Callbacks” on page 8-2.