Step 3 Route the cable according to the instructions in 8.1 Cabling Requirements, and then use a cable
tie to bind the cable.
Step 4 Label the installed cable according to the instructions in Attaching a Cable-Tying Label.
----End
8.11 Installing a CPRI Fiber Optic Cable
This section describes the procedure for installing a CPRI fiber optic cable.
Prerequisites
Before the installation, single-mode optical modules can be distinguished from multi-mode
optical modules in either of the following ways:
l SM and MM labels on an optical module: SM indicates a single-mode optical module, and
MM indicates a multi-mode optical module.
l Color of the puller on an optical module: Blue indicates a single-mode optical module, and
black or gray indicates a multi-mode optical module.
NOTICE
The optical modules to be installed must match CPRI rates.
Context
l A CPRI fiber optic cable transmits CPRI signals between a BBU and an RRU.
l For details about CPRI fiber optic cable connections, see section "CPRI Cable Connections"
in the BBU3900 Hardware Description or DBS3900 Hardware Description.
Procedure
Step 1 Lower the pullers of two optical modules, insert one optical module into the CPRI0 port on the
RRU and the other optical module into the CPRI port on the BBU, and raise the pullers, as shown
in Figure 8-27.
Figure 8-27 Installing an optical module
RRU3942&RRU3642
Installation Guide
8 Installing RRU Cables
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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