AcQuisition Technology Quad M-module Carrier i4000 Guide de l'utilisateur télécharger pdf (Page 110)

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5: Troubleshooting

Care and Cleaning of Optical Cables

Warning: Never look into the end of a fiber optic cable to confirm that light is being

emitted (or for any other reason). Most fiber optic laser wavelengths (1300 nm and 1550

nm) are invisible to the eye and cause permanent eye damage. Shorter wavelength

lasers (for example, 780 nm) are visible and can cause significant eye damage. Use only

an optical power meter to verify light output.

Warning: Never look into the end of a fiber optic cable on a powered device with

any type of magnifying device, such as a microscope, eye loupe, or magnifying glass.

Such activity can cause a permanent burn on the retina of the eye. Optical signal

cannot be determined by looking into the fiber end.

Fiber optic cable connectors must be kept clean to ensure long life and to minimize

transmission loss at the connection points. When the cables are not in use, replace the

caps to prevent deposits and films from adhering to the fiber. A single dust particle

caught between two connectors will cause significant signal loss. In addition to causing

signal loss, dust particles can scratch the polished fiber end, resulting in permanent

damage. Do not touch the connector end or the ferrules; your fingers will leave an oily

deposit on the fiber. Do not allow uncapped connectors to rest on the floor.

If a fiber connector becomes visibly dirty or exhibits high signal loss, carefully clean the

entire ferrule and end face with special lint-free pads and isopropyl alcohol. The end face

in a bulkhead adapter on test equipment can also be cleaned with special lint-free swabs

and isopropyl alcohol. In extreme cases, a test unit may need to be returned to the factory

for a more thorough cleaning.

Never use cotton, paper, or solvents to clean fiber optic connectors; these materials may

leave behind particles or residues. Instead, use a fiber optic cleaning kit especially made

for cleaning optical connectors, and follow the directions. Some kits come with canned

air to blow any dust out of the bulkhead adapters. Be cautious, as canned air can damage

the fiber if not used properly. Always follow the directions that come with the cleaning

kit.

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AcQuisition Technology Quad M-module Carrier i4000 Guide de l'utilisateur Page 110