VT Camera Link series
Page 29 of 88
VW40-161-001
8.1.2
Using an External/CC1 Trigger Signal
If the
Trigger Mode
parameter is set to
ON
and the
Source
parameter is set to
External
or
CC1
, you must
apply an external or CC1 trigger signal to the camera to begin image acquisition.
To apply trigger signals via CC1 port of the Camera Link frame grabber, you must set the
Source
parameter to
CC1
. At that point, each time a proper CC1 trigger signal is applied to the camera by using the APIs provided by
a Camera Link frame grabber manufacturer, the line start trigger signal will be applied to the camera.
For more information, refer to your Camera Link frame grabber user manual.
To apply trigger signals via hardware (external), you must set the
Source
parameter to
External
. At that point,
each time a proper electrical signal is applied to the camera, an occurrence of the line start trigger signal will be
recognized by the camera.
A rising edge and/or a falling edge of the external or CC1 signal can be used to trigger image acquisition.
The
Activation
parameter is used to select rising edge and/or falling edge triggering.
When the camera is operating under control of an external or CC1 signal, the period of trigger signal will
determine the rate at which the camera is acquiring images:
For example, if you are operating a camera with an external trigger signal period of 20
㎲
(0.00002 s):
So in this case, the line rate is 50
㎑
.
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