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Description

3 - 1 8

If a contaminated (dirty) fiber is disconnected with high levels of

power present, permanent damage to the fiber can occur. The Switch

protection feature is designed to protect the fiber by ensuring that the

power has been turned down prior to disconnecting the fiber. The

switch protection mechanism combines a movable hinged cover,

located over the fiber connection on the circuit pack faceplate, with a

switch. With the cover in the down position the fiber connection

cannot be physically accessed. With the cover in the down position

high power light can flow through the fiber. Unlatching the cover and

raising it to the up position causes the system to turn down the

necessary pumps, making it safe to remove the fiber connection. The

time interval between moving the hood to the up position and

removing the fiber connection is sufficient for the pumps to be turned

down.

Lucent Technologies - Proprietary

See notice on first page

Automatic Power Reduction (APR)

365-575-783R1.1

Issue 1, June 2002

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