VT Camera Link series
Page 28 of 88
VW40-161-001
8.1.1.2
Trigger Mode = ON
When the
Trigger Mode
parameter is set to
ON
, you must apply a line start trigger signal to the camera each
time you want to begin an image acquisition. The
Source
parameter specifies the source signal that will act as
the line start trigger signal.
The available settings for the
Source
parameter are:
External
:
You can apply a line start trigger signal to the camera by injecting an externally generated
electrical signal (commonly referred to as a hardware or external trigger signal) into the Control
I/O receptacle on the camera. Refer to
CC1
:
You can apply a line start trigger signal via CC1 port of the Camera Link frame grabber.
For more information, refer to your Camera Link frame grabber user manual.
After setting the
Source
parameter, you must also set the
Activation
parameter.
The available settings for the Activation parameter are:
Rising
:
Specifies that a rising edge of the electrical signal will act as the line start trigger.
Falling
:
Specifies that a falling edge of the electrical signal will act as the line start trigger.
Both
:
Specifies that both rising and falling edges of the electrical signal will act as the line start
trigger.
When the
Trigger Mode
parameter is set to
ON
, the camera’s line rate can be controlled by manipulating the
external trigger signal. At this point, it is important that you do not attempt to trigger images at a rate that is
greater than the maximum allowed.
Figure 8.2 Trigger Mode = ON
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