Avaya Virtual Services Platform 7000 Series Installation Manual page 25

Fiber optic cable care
Although reinforcing material and plastic insulation protects the glass fiber in fiber optic cable , it is
subject to damage. Use the following precautions to avoid damaging the glass fiber.
• Do not kink, knot, or vigorously flex the cable.
• Do not bend the cable to less than a 40 mm radius.
• Do not stand on fiber optic cable; keep the cable off the floor.
• Do not pull fiber optic cable harder than you do a cable containing copper wire of comparable
size.
• Do not allow a static load of more than a few pounds on a section of the cable.
• Place protective caps on fiber optic connectors that are not in use.
• Store unused fiber optic patch cables in a cabinet, on a cable rack, or flat on a shelf.
Frequent overstressing of fiber optic cable causes progressive degeneration that leads to failure.
If you suspect damage to a fiber optic cable, either due to mishandling or an abnormally high error
rate observed in one direction, reverse the cable pairs. If the high error rate appears in the other
direction, replace the cable.
Caution:
Risk of equipment damage
Do not crush fiber optic cable. If fiber optic cable is in the same tray or duct with large, heavy
electrical cables, the weight of the electrical cable can damage the fiber optic cable.
Fiber optic connector care
Before you connect fiber optic connectors to transmission equipment, test equipment, patch panels,
or other connectors, ensure fiber optic connectors are clean. The performance of an optical fiber
connector depends on how clean the connector and coupling are at the time of connection.
A damaged or dirty connector can damage a connector with which it pairs. A connector must be
clean before you insert it into a transmitter or receiver.
Never clean an optical connector while it carries light. Optical power can cause ignition of the
cleaning material when it contacts the end of the optical connector and can destroy the connector.
Typical cleaning materials, for example, tissues saturated with alcohol, combust almost
instantaneously after you expose them to optical power levels of +15 dBm or higher.
Visually inspect the connector to determine cleanliness and to determine if it needs replacing. You
must replace a connector that has a scratch across the core, or a scratch that appears to end in the
core.
The proper connector cleaning method depends on the connector contaminants:
• Judge cleanliness by visual inspection with a fiber microscope. First inspect the connector, and
then clean as required.
Warning:
Risk of eye injury
August 2014 Installing Transceivers and Optical Components on Avaya VSP 7000 Series
Comments? infodev@avaya.com
Fiber optic equipment care
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