Huawei NetEngine80E Installation Manual page 64

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HUAWEI NetEngine80E Router

Installation Guide

Precautions for the overload-caused burnt optical module

Other precautions

Cleaning Fiber Connectors

This section describes how to clean fiber connectors.

Procedure

Step 1 Clean the pins of a fiber connector by using lint-free cotton and alcohol.

Step 2 Clean the pins again by using dust-free cotton. If necessary, clean the pins by using an air gun.

----End

Cleaning MT Connectors (MTP/MTRJ) with Guide Pins

This topic describes how to clean the guide pins of MT connectors.

Procedure

Step 1 Clean the guide pins by using lint-free cotton and alcohol.

Step 2 Clean the pins again by using dry, lint-free cotton.

Step 3 Clean the pins by using an air gun.

----End

Installing an FC Fiber Connector

This section describes how to install an FC fiber connector.

Issue 02 (2011-09-10)

When using an OTDR to test the connectivity or the attenuation of optical signals,

disconnect the optical connector from the optical module. Otherwise, the optical module

is probably burnt.

When performing a self-loop test, use an optical attenuator. Do not loosen the optical

connector instead.

It is required that a long-distance optical module input optical power smaller than -7 dBm.

If the input optical power is larger than -7 dBm, you need to add an optical attenuator. For

example, if the transmiting optical power is X dBm and the optical attenuation is Y dB, the

receiving optical power is X-Y, which must be smaller than -7dBm (X-Y<-7 dBm).

The optical connector should be horizontally inserted in the receptacle to avoid damages

to the receptacle.

Mixed use of multi-mode and single-mode optical fibers is prohibited. Otherwise, faults

such as signal loss may occur.

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3 On-site Cable Assembly and Installation

Ne80e