Huawei DBS3900 Installation Manual page 63

RRU3249
Installation Guide
The optical modules to be installed must match CPRI rates.
Context
l
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
Figure 7-24 Installing an optical module
The performance of an optical module that is exposed to the air for more than 20 minutes may
be abnormal. Therefore, you must insert an fiber optic cable into an unpacked optical module
within 20 minutes.
Step 2 Connect the end labeled 1A and 1B of the optical cable to the optical module on the RRU side,
as shown in
Issue DraftA (2015-05-30)
NOTICE
A CPRI optical cable transmits CPRI signals between a BBU and an RRU.
7-24.
NOTICE
Figure 7-25.
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7 Installing RRU Cables
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