Huawei BBU3900 Installation Manual page 11

Installing the BBU in the APM30
b
Installing the BBU Cables
FE transfer cable
7. Install the monitoring signal cable between the APMI and the BBU.
7.1. Fix the RJ45 connector at one end of the cable to the MON1 port on the UPEU.
7.2. Cut off the RJ45 connector at the other end of the cable on site, and then connect the four exposed wires to the
RX+, RX-, TX+, and TX- ports on the APMI.
5. Install the FE transfer cable (FE transmission mode).
Connect one end of the FE transfer cable to the FE0 port
near the INSIDE label on the UFLP and the other end to the
FE0 port on the GTMU.
6. Install the FE cable (FE transmission).
6.1. Connect one end of the FE cable to the FE0 port near the
OUTSIDE label on the UFLP. Then, lead the other end out of
the cabinet along the right side of the cabinet.
6.2. Thread the FE cable through the grounding clip. Then,
tighten the screw on the grounding clip to make the shielding
layer of the FE cable in full contact with the grounding clip.
FE cable
Finally, connect the PGND cable on the grounding clip to the
grounding bolt of the APM30.
10
(25mm)
Shielding
layer of
the FE
cable