Huawei BBU3900 Installation Manual page 9

Installing the BBU in the APM30
b
Installing the BBU Cables
2. Install the CPRI optical cable.
Connect the fiber tails labeled 2A and 2B to one of the CPRI0 to CPRI5 ports on the
GTMU, and connect the fiber tails labeled 1A and 1B to the CPRI_W port on the RRU.
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.
1. Install BBU power cable.
Connect the OT terminal of the power cable to the LOAD3
terminal of the PDU, and then fix the 3V3 connector of the
power cable to the PWR port on the BBU.
LOAD3
The OT terminals of the power cable is to be made on site.
Winding pipe
The TX port on the BBU is connected to the RX port on the RRU.
The RX port on the BBU is connected to the TX port on the RRU.
8
Optical module
Puller
a. Insert the optical module into the CPRI0,
CPRI1, CPRI2 CPRI3, CPRI4 or
CPRI5 port, and then turn outwards
the puller on the optical module.
b. Insert one end of the CPRI optical cable
into the optical module, and then lead
the CPRI optical cable out of the
cabinet along the right side of the
cabinet.
c. Wrap the fiber tail with the winding pipe.
NEG(-)
RNT(+)
PWR