User`s guide

5 Acqu iring Image Data
The fol lowing figure il lustrates a group of frame s being acquired from the
video stream and being logg ed to m emory a nd disk.
Overview o
fDataLogging
Trigger Pr
operties
The video i
nput object supports several properties that you can use to
configure
aspects of trigger execution. Some of these properties return
informat
ion about triggers. For example, to find out when the first trigger
occurred
, look at the value of the
InitialTriggerTime property. Other
properti
es enable you to control t rig ge r behavior. For ex ample, y ou use the
Trigger
Repeat
property to specify how many additional times an object
should e
xecute a trigger.
The foll
owing table provides a brief des cription of all the trigger-related
propert
ies supported by the video input object. For information about how to
set the
se properties, see “Se tting the Values of Trigger Properties” on page 5-6.
Property Description
InitialTriggerTime
Reports the absolute time when the first trigger
executed.
5-4