Huawei RRU3203 Installation Manual page 17

Installing the RRU Cables
b
Opening the Cover Plate
of the RRU Cabling Cavity
d
Cable Connections on the RRU
Before connecting a power cable,
ensure that other end of the power cable
not connected to any power supply.
Use the DC RRU power cable clip to
press the shielding layer tightly and
ensure that the lower part of the
shielding layer does not exceed the
position shown in the preceding figure.
Ground the shielding layer at the
other end of the power cable.
Do not remove the dustproof cap from
the idle antenna port, and use the
waterproof tape to wrap the joint.
For details on how to add OT
terminals to the DC RRU power cable of
the RRU, see page 22 " Adding OT
Terminals by Using a Wire Stripper."
When wrapping the waterproof tape,
apply even force to extend the tape until
the width of the tape is 1/2 of the
original width.
Wrap the joint spirally upward,
downward, and then upward again. In
other words, the joint is wrapped by
three layers of the tape. Ensure that the
two immediate layers overlap with each
other about half the width of the tape.
For details, see page 24 "Waterproofing
Outdoor Cables."
Install the optical module before
installing the optical cables. For details,
see page 25 "Installing the Optical
Module."
c
M4
Cover plate of the
cabling cavity
Cabling cavity
Label for preparing
the power cable
CPRI optical cable
Cabling Cavity of the RRU
Shielding
layer of the
power cable
DC RRU
power cable
RRU RF
jumper
16
Cable troughs for
power cables
Cable troughs for
optical cables
Cable troughs for
power cables
Waterproofing filler
cable clip
First wrap the joint
with the waterproof
tape, and then
wrap the joint with
the PVC insulating
tape.
After the cables
are installed on
the RRU, insert
the waterproofing
fillers into the idle
cable troughs.