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RRU3203
Installation Guide
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8.10 Installing a CPRI Fiber Optic Cable
This section describes the procedure for installing a CPRI fiber optic cable.
Prerequisites
Before the installation, single-mode optical modules can be distinguished from multi-mode
optical modules in either of the following ways:
l
l
Issue 06 (2012-04-16)
CAUTION
Ensure that the exposed shield layer of the power cable is properly tightened using
the clip.
2.
Connect the OT terminals of the blue and black/brown core wires at the other end of
the RRU power cable to the NEG(-) and RTN(+) wiring terminals of the LOAD0 on
the DCDU respectively.
NOTE
One DCDU can supply power to a maximum of six RRUs. The RRU power cable can be connected
to any wiring terminal from LOAD0 to LOAD5 on the DCDU.
3.
Lay out the cable by referring to
using cable ties.
4.
Label the installed cable by referring to Attaching a Cable-Tying Label.
Install an RRU power cable that feeds power to an RRU from the embedded power system
(EPS) or embedded power unit (EPU) when the EPS or EPU is configured.
1.
Connect the OT terminals of the blue and black/brown core wires at one end of the
RRU power cable to the NEG(-) and RTN(+) wiring terminals on the RRU cabling
cavity respectively, as shown in
2.
Link the tool-less female connector (pressfit type) at one end of the RRU power cable
to the RRU0 port on the EPS or EPU subrack.
NOTE
l The blue core wire in the tool-less female connector (pressfit type) is linked to the left port
on the EPS or EPU subrack, and the black/brown core wire is linked to the right port on
the EPS or EPU subrack.
l The EPS or EPU can supply power to a maximum of six RRUs. The RRU power cable can
be connected to any of RRU0 to RRU5 ports on the EPS or EPU.
3.
Lay out the cable by referring to
using cable ties.
4.
Label the installed cable by referring to Attaching a Cable-Tying Label.
SM and MM labels on an optical module: SM indicates a single-mode optical module, and
MM indicates a multi-mode optical module.
Color of the puller on an optical module: Blue indicates a single-mode optical module, and
black or gray indicates a multi-mode optical module.
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Copyright © Huawei Technologies Co., Ltd.
8.1 Cabling
Requirements, and then bind the cable
Figure
8-17.
8.1 Cabling
Requirements, and then bind the cable
8 Installing RRU Cables
79
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