
16
Installing the RRU Cables
b c Cabling Cavity of the RRU
Opening the Cover Plate
of the RRU Cabling Cavity
Waterproofing filler
Cable troughs for
optical cables
Cable troughs for
power cables
Cabling cavity
Cover plate of the
cabling cavity
Label for preparing
the power cable cable clip
Cable troughs for
power cables
dCable Connections on the RRU
zBefore connecting a power cable,
ensure that other end of the power cable
not connected to any power supply.
zUse 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.
zGround the shielding layer at the
other end of the power cable.
zDo not remove the dustproof cap from
the idle antenna port, and use the
waterproof tape to wrap the joint.
zFor 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."
zWhen wrapping the waterproof tape,
apply even force to extend the tape until
the width of the tape is 1/2 of the
original width.
zWrap 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.”
zInstall the optical module before
installing the optical cables. For details,
see page 25 “Installing the Optical
Module.”
After the cables
are installed on
the RRU, insert
the waterproofing
fillers into the idle
cable troughs.
CPRI optical cable RRU RF
jumper
DC RRU
power cable
Shielding
layer of the
power cable
First wrap the joint
with the waterproof
tape, and then
wrap the joint with
the PVC insulating
tape.
M4