User`s guide

5 Acqu iring Image Data
Comparison of Trigger Types (Continued)
TriggerType
Value
TriggerSource
and
TriggerCondition
Values Description
'manual'
Always 'none' The trigger occurs wh en you issue
the
trigger function. A manual
trigger can prov ide more control
over image acquisition. For example,
you can monitor the video stream
being acquired, using the
preview
function, and manually execute the
trigger when you observ e a particular
condition in the s cen e. For more
information, see “Example: Using a
Manual Trigger” on page 5-13.
'hardware'
Device-specific Hardware triggers are external
signals that are processed directly by
the hardware. This type of trigger
is used when synchronization with
another device is part of the image
acquisition setup or when speed is
required. A hardware device can
process an input signal much faster
than software. For more information,
see “Example: Using a Hardware
Trigger” on page 5-16.
Note Only a subset of image
acquisition devices supports
hardware triggers. To determine
the trigger types supported by your
device, see “Determining Valid
Configurations” on page 5-7.
5-10