15
2.1.3.
Cable Shield Grounding
Camera and frame grabber cable “outer” shields are connected to the CLT-351R/L
aluminum case. Case and endplate contacting surfaces are unpainted, providing a
Faraday cage to shield internal circuitry. The case is isolated from the CLT-351R/L
circuitry and the cable “inner” shields, avoiding possible safety concerns.
The frame grabber cable “inner” shield connects to circuit digital ground, maintaining
signal reference levels between the CLT-351R/L 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 the CLT-351R/L, the
camera connector
represents
the Camera Link
TM
frame grabber interface. To incorporate this flexibility, the CLT-
351R/L 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.
Содержание CAMERA LINKT CLT-351L
Страница 21: ...19 Ground 68 N A tied to digital ground 1 Pixel Data MSB FG Frame Grabber ...
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Страница 27: ...25 Ground 68 N A tied to digital ground 1 Pixel Data MSB FG Frame Grabber ...
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Страница 33: ...31 Ground 68 N A tied to digital ground 1 Pixel Data MSB FG Frame Grabber ...
Страница 36: ...34 Ground 68 N A tied to digital ground 1 Pixel A MSB 2 Pixel B MSB FG Frame Grabber ...
Страница 39: ...37 Ground 68 N A tied to digital ground 1 Pixel A MSB 2 Pixel B MSB FG Frame Grabber ...
Страница 42: ...40 Ground 68 N A tied to digital ground 1 Pixel A MSB 2 Pixel B MSB FG Frame Grabber ...