Huawei BBU3900 Installation Manual page 35

Installing the BBU in the APM30H(Ver.B)
c
Installing the BBU Cables
1. Install power cable.
Link the easy power receptacle (pressfit type) connector at one end to the LOAD1 terminal of
the EPS01, and then link the 3V3 connector at the other end to the -48V port on the BBU.
2. Install the CPRI optical cable.
Insert the DLC connectors labeled 2A and 2B at one end of the CPRI optical cable into the
optical module on the GTMU, and then insert the DLC connectors labeled 1A and 1B at
the other end into the optical module on the RRU.
2.1. Turn the puller on the optical module outwards,
and then insert the optical module to the port CPRI
0 to CPRI5.
Optical module
Puller
The single-mode optical module is labeled "SM"
and multi-mode optical module is labeled "MM".
If the puller of an optical module is blue, the
module is a single-mode optical module. If the
puller of an optical module is black or grey, the
module is a multi-mode optical module.
2.2. Remove the dustproof caps from the optical
connectors. Insert the optical connector at one end
of the CPRI optical cable into the optical module.
Lead the CPRI optical cable out of the cabinet along
the left side of the cabinet.
2.3. Wrap the winding pipe at the fiber tails.
LOAD1
Winding pipe
If both ends of the optical cable are the LC
connectors, the TX and RX ports on the BBU
are respectively connected to the TX and RX
ports on the RRU.
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