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Installing eRRU Cables
i
Cable List
Cable
PGND cable and
equipotential cable (cable
diameter greater than or
equal to 16 mm
2
)
Power cable
CPRI optical fiber
The distance between the
RRU and the BBU does
not exceed 100 m.
CPRI single-mode pigtail
The distance between the
RRU and the BBU
exceeds 100 m.
RF feeder
Checking the eRRU Hardware Installation
a
Checking the Device Installation
NO.
Check Item
1
The position for each device conforms to the engineering drawing and meets the space requirement. Sufficient
space is reserved for equipment maintenance.
2
When installing the RRU on the pole, secure the bracket and ensure that the devices are tightened properly.
3
When installing the RRU on the wall, the holes in the auxiliary bracket are well aligned with those for expansion
bolts. The mounting bracket is placed against the wall securely and evenly.
4
Waterproof blocks are securely installed in vacant cable troughs of the RRU cabling cavity, and the cover plate for
the cabling cavity is securely installed. In addition, vacant RF ports are covered with dustproof caps and the caps
are tightened.
5
The optical modules at both ends of the optical fiber have the same specifications, rate, and transmission distance.
6
The eRRU works properly. The indicators run properly.
7
Labels are correct, legible, and complete at both ends of each cable, feeder, and jumper.
Connector Type
OT terminal (M6)
OT terminal (M8)
Tool-less female connector (pressfit
type) or 3-pin round connector
Bare wire
DLC connector
DLC connector
DLC connector
FC connector
Type N male connector
Type N male connector
Connected to...
RRU ground bolt
External ground bar/ground bar of the surge protection box
Power supply port on the RRU
External power system (with a connector added depending on
the actual condition)
DC
The 1A and 1B ends are connected to the CPRI0/IR0 port on
the RRU cabling cavity.
The 2A and 2B ends are connected to the optical port on the
BBU baseband board.
The 1A and 1B ends are connected to the CPRI0/IR0 port on
the RRU cabling cavity.
The 2A and 2B ends are connected to the fiber splice tray.
RF port on the RRU
Antenna
10
AC
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