User`s guide

start
17-83
start
Obtain exclusive use of image acquisition device
Syntax
start(obj)
Description
start(obj) obtains exclusive use of the image acquisition device associated with
the video input object obj and locks the device's configuration. Starting an object is a
necessary first step to acquire image data, but it does not control when data is logged.
obj can either be a 1-by-1 video input object or an array of video input objects.
Data logging is controlled with the TriggerType property.
Trigger Type Logging Behavior
'hardware' Data logging occurs when the condition specified in the object's
TriggerCondition property is met via the TriggerSource.
'immediate' Data logging occurs immediately.
'manual' Data logging occurs when the trigger function is called.
Use the triggerconfig function to configure the object's trigger settings.
When an acquisition is started, obj performs the following operations:
1
Transfers the object's configuration to the associated hardware.
2
Executes the object's StartFcn callback.
3
Sets the object's Running property to 'On'.
If the object's StartFcn errors, the hardware is never started and the object's Running
property remains 'Off'.
The start event is recorded in the object's EventLog property.