Huawei NetEngine 8000 F User Manual

Number of
Optical Fiber
Connectors
Maximum Reection of Each Connector (dB)
50GBASE-FR 50GBASE-LR 50GBASE-ER
6 -38 -35 -35
8 -40 -37 -37
10 -41 -39 -39
Procedure
1. After the optical ber at the peer end is disconnected, use the OTDR meter to
test the local end. Check whether the loss and
reection of each link and
node are normal. (The loss of a ber splicing connector should be less than
0.3 dB, the loss of a connector should be less than 0.75 dB, and the reection
of a connector should be less than -30 dB.) If the test result is not within the
required range, process the abnormal port.
2. Locate the equipment room where the port resides based on the distance
between abnormal points in the OTDR test result. Preliminarily determine the
port location, disconnect the port, and perform an OTDR test on the port that
reports alarms. Check whether the distance is consistent with that in the
previous test. If not, continue to test other ports.
3. After the abnormal port is found, test the port using a
ber microscope. If the
port is dirty, clean it. For details, see "Inspecting and Cleaning Optical Fiber
Connectors and Adapters".
4. After the port is cleaned, restore the port, and ensure that the connector is
tightened. Perform an OTDR test on the port to check whether loss and
reection of each link and node are normal.
5. If the fault persists, replace the ange and perform an OTDR test on the port
that reports alarms to check whether loss and reection of each link and
node are normal.
6. If the fault persists, replace the optical
ber and perform an OTDR test on the
port that reports alarms to check whether loss and reection of each link and
node are normal.
7. If multiple abnormal points exist on the link, repeat steps 2 to 6.
4.1.4.5.6 Cleaning Optical Fiber Connectors Using the Cassette Cleaner
This topic describes how to clean the
ber connectors using a cassette cleaner.
Prerequisites
Before cleaning, inspect the ber end face with a ber microscope or a magnier
to conrm the degree of ber contamination. Clean the ber only when it is
severely contaminated. This is because the cleaning operation itself may introduce
dust, dirt, or cause damage to the
ber.
The following procedure provides the steps to clean the ber connectors using
cartridge type cleaners.
HUAWEI NetEngine 8000 F
Hardware Guide 4 Hardware Installation and Parts Replacement
Issue 05 (2023-03-31) Copyright © Huawei Technologies Co., Ltd. 393

Huawei NetEngine 8000 F Specifications

General

Brand	Huawei
Model	NetEngine 8000 F
Category	Network Router
Language	English