User's Manual

SECTION 3

TROUBLESHOOTING

OPTICAL FIBER

The VersiVision FVT1000 and FVR1000 Series fiber optic video modems are available for applications using

multimode or singlemode optical fibers. Please be certain that the correct size and type of fiber is being used for

the particular mode transmitter/receiver combination.

Also be certain that the attenuation and bandwidth of the fiber optic cable being used is within the range of the

system’s loss budget specifications.

GENERAL

Any dirt or dust may easily pollute or block the fiber from accepting or radiating light. Therefore, please try to

keep the optical connector clear and always use the dust caps whenever the connector is exposed to air. It is

suggested that the tip of the optical connector should be carefully cleaned with a lint-free cloth moistened with

alcohol from time to time.

The status of any of the VIDEO LED should provide the first clue as to the origin of any operational failure. If

the VIDEO LED or the receiver unit is off, it usually means that the fiber is broken or has too much attenuation.

Next, be certain to check all connections and assure that inputs and outputs are not intermixed and transmitter

and receiver are not connected incorrectly.

Note: If the system is still not working after examining the above possibilities, please contact our Customer

Service Department for further assistance.