Huawei RRU3201-700M Users Guide
Installing the RRU Cables
b
Open the cover plate of the
RRU cabling cavity
Cabling cavity
Cover plate of the
cabling cavity
C
Cabling Cavity of the RRU
Cable trough for the optical cable
Cable trough for the
power cable
Waterproof filler
d
layer of the
power cable
Cable Connections of the RRU
Grounding
screw
OT terminal
PGND cable
Shielding
Strap
Waterproof
tape
15
Installing the RRU Cables
d
Cable Connections of the RRU
z Use the power cable clip to press the shielding layer tightly and ensure that the lower part of the shielding layer does n ot
exceed the position shown in the preceding figure.
z The grounding resistance of the PGND cable should be less than 10 ohms. The PGND cable cannot be connected to the
grounding terminal.
z Ground the shielding layer of the other end of the power cable.
z After the cables are installed on the RRU, insert the waterproofing fillers into the idle cable holes.
z When wrapping the waterproofing tape, apply even force to extend the tape until the width of the tape is 1/2 of the
original width.
z 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 upper layer of the tape covers about half of the lower layer when wrapping up the tape.
z Do not remove the dustproof cap from the idle antenna port. Perform the waterproof, dustproof, and smokeproof
treatment if necessary. Use the waterproof tape to wrap the joints in outdoor applications.
For details on how to add the OT terminals to the power cable, see pages 22 to 23 Adding
OT Terminals to the Power Cable of the RRU.
For details installing the Optical Module, see page 24 Installing the Optical Module.
e
Close the cover plate of the RRU cabling cavity
1.4N•m
1. The screw on the cover plate is tightened until the
fastening torque is 1.4 N• m.
2. The screws on the cover plate are tightened in the
order shown in the preceding figure
.
16
Installing the RRU Cables
f
RRU+APM30H
Grounding the shielding layer of the power cable:
25mm
Metal shielding layer
(25mm)
a
a
RRU power cable
CPRI optical cable
b
b
RRU power
cable
g
1. The RRU power cable is connected to one group of the RRU0 to RRU5 terminals of the PDU.
2. Strip the jacket off the RRU power cable for a small part, press the exposed shielding layer on the strap, and
then connect the PGND cable on the strap to the nearest grounding bolt on the side in the APM30/APM30H.
RRU+TMC/TMC11H
LOAD0
Grounding the shielding layer of the power cable:
25mm
Metal shielding layer
(25mm)
The RRU power cable is connected to
LOAD0 to LOAD5 on the DCDU-03C.
a
b
a
RRU power cable
CPRI optical cable
b
17
Installing the RRU Cables
h
RRU+19-Inch cabinet
LOAD0
RRU power cable
b
z At the end of the RRU power cable connected to the DCDU-03C, you need to make the shielding la yer of the power
cable into an OT terminal, and then connect the OT terminal to the PGND terminal of the corresponding port on the
DCDU-03C. For details about making an OT terminal, see pages 26 and 27.
z The RRU power cable is connected to LOAD0 to LOAD5 on the DCDU-03C.
a
a
b
CPRI optical cable
RRU+BBU Installed Against the Wall
i
a
RRU power cable
b
CPRI optical cable
c
BBU power cable
d
PGND cable
a
c
b
d
d
a
b
RRU
BBU
zThe RRU power cable is connected to LOAD0 to LOAD5 on the DCDU-03C.
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