DRH
Hardware Maintenance Guide
5 Replacing an Optical Module
Issue 1.0(2013-04-10)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
11
5
Replacing an Optical Module
An optical module implements optical-electrical conversion, enabling optical transmission
between a DRH and other devices. You must disconnect optical fibers from an optical module
before replacing the optical module. Disconnecting the optical fibers interrupts the
transmission of CPRI signals.
Prerequisites
Confirm the type of a faulty optical module and do as follows:
−
Log in to the WebLMT or M2000 and run the
DSP SFP
command.
−
Confirm the type of the faulty optical module according to the
Transmission Rate
,
Wavelength
, and
Transmission mode
fields in the query result and obtain an optical
module of the same type.
shows the label on the optical module.
Figure 5-1
Label on the optical module
(1) Peak rate
(2) Wavelength
(3) Transmission mode
−
If the software version does not support query of the type of the optical module by
using an MML command, obtain all types of optical modules.
−
If a fault in the optical module on the DRH side causes disconnection of the CPRI
link, the MML command to query the type of the fault cannot be used. In this case,
query the type of the corresponding optical module on the DCU side instead and
obtain a new optical module of the same type. For the detailed querying method, see
the
DCU3900 Hardware Maintenance Guide
.
The following tools and materials are available: ESD gloves, M4 Phillips screwdrivers,
and an ESD box or bag.
Context
Optical modules are inserted into CPRI ports on a DRH.
Optical modules are hot-swappable when the same CPRI ports are used.
