Huawei RRU5303 Installation Manual page 120

RRU5303
Installation Guide

After removing dustproof caps from the optical module and optical fiber connector, insert
the optical fiber into the optical module immediately (within one minute) to avoid
pollution of the optical module or optical fiber connector, which may cause an optical
module alarm.

Ensure that CPRI optical fibers are correctly connected before the RRU is powered on.
Otherwise, the RRU may become faulty, causing cells to fail to provide services.

To avoid any damage to optical fibers, the fibers connected to the RRU must be installed
according to the installation process. For details about the installation process, see 8.3
Installing RRU Cables.
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Issue Draft B (2018-05-15)
When installing CPRI optical fibers for dual-fiber bidirectional optical modules, remove
the dustproof caps from the ports on the optical module and those from the optical fiber
connector, and connect the end labeled 1A and 1B on the optical fiber to the optical
modules on the RRU side, as shown in Figure 8-26. Connect the DLC ends labeled 2A
and 2B to the CPRI port on the main control board (such as the GTMU) or baseband
processing board (such as the WBBP) in the BBU.
Figure 8-26 Installing CPRI optical fibers for dual-fiber bidirectional optical modules
When installing CPRI optical fibers for single-fiber bidirectional optical modules,
remove the dustproof caps from the ports on the optical module and from the LC end
labeled 1A on the optical cable, divide the DLC end into two LC ends, and connect the
end labeled 1A to the optical module on the RRU side, as shown in Figure 8-27. Connect
the other LC end labeled 2A to the CPRI port on the main control board (such as the
GTMU) or baseband processing board (such as the WBBP) in the BBU.
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8 Installing RRU Cables
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