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2.4.
Cable Shield Grounding
Camera and frame grabber cable “outer” shields are connected to the CLV-401 aluminum
case. The case is isolated from the CLV-401 circuitry and the cable “inner” shields.
The frame grabber cable “inner” shield connects to circuit digital ground, maintaining
signal reference levels between the CLV-401 and the frame grabber.
The Camera Link
TM
Specification recommends that a provision be incorporated into frame
grabbers that enable the inner shields be tied to digital ground either directly, or through a
parallel R/C network. In CLV-401, the
camera connector
represents the Camera Link
TM
frame grabber interface. To incorporate this flexibility, the CLV-401 ties the inner shields
from the camera connector to digital ground through 0-ohm resistors. If necessary, the 0-
ohm resistors may be replaced with a parallel RC network.
