BMW E65 User Manual download pdf (Page 27)

E65 Bus Systems

Abrasion Points

In contrast with copper wires,

abrasion of fiber-optic cables

does not cause a short circuit.

Instead, loss of light or intrusion

of external light occurs. The sys-

tem then suffers interference or

fails completely.

Dirty or Scratched Fiber-Optic Cable Ends

Another potential source of problems are dirty or scratched cable ends. Although the ends

of the cables are protected against accidental contact, they can still be damaged by incor-

rect handling.

Dirt on the end of an optical fiber will prevent the light entering/exiting the fiber. The dirt

absorbs the light and the attenuation is then too great.

Scratches on the cable ends scatter light striking them so that the amount of light reach-

ing the receiver is reduced.

KT-8940

KT-8854

KT-8855

Dirty

Scratched

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BMW E65 User Manual Page 27