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Camera Operation & Features
Document No.: 04646-01
PixeLINK PL-A780
MACHINE VISION CAMERA
SYSTEM GUIDE
Copyright © 2004 PixeLINK
All Rights Reserved
Using an analog trigger switch that connects to ground when a trigger occurs:
•
Connect Pin 1 (Power) to Pin 2 (T)
•
Connect trigger switch between Pin 3 (Trigger - ) and Pin 4 (Ground)
More sophisticated examples using TTL logic are shown in Figure 14 and Figure 15 below.
Figure 16 on page 25 shows an example using an optical trigger where the optical sensor is
used to trigger multiple cameras. Note that with such a device, there will be some noise as
the signal is switched and the camera’s debounce clock should be reduced to 100KHz to
avoid multiple triggers.
Figure 14 Trigger Input Example - TTL AND Gate
Figure 15 Trigger Input Example - TTL Inverter
