User`s guide

Retrieving Timing Information
7-23
Retrieving Timing Information
In this section...
“Introduction” on page 7-23
“Determining When a Trigger Executed” on page 7-23
“Determining When a Frame Was Acquired” on page 7-24
“Determining the Frame Delay Duration” on page 7-25
Introduction
The following sections describe how the toolbox provides acquisition timing information,
particularly,
• Determining when a trigger executed
• Determining when a particular frame was acquired
To see an example of retrieving timing information, see “Determining the Frame Delay
Duration” on page 7-25.
Determining When a Trigger Executed
To determine when a trigger executed, check the information returned by a trigger
event in the object's event log. You can also get access to this information in a callback
function associated with a trigger event. For more information, see “Retrieving Event
Information” on page 8-8.
As a convenience, the toolbox returns the time of the first trigger execution in the video
input object's InitialTriggerTime property. This figure indicates which trigger is
returned in this property when multiple triggers are configured.