Cable Connections - Huawei DBS3900 Installation Manual

15 Installing Cables
Cabling requirements for PGND cables are as follows:
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Cabling requirements for E1 cables are as follows:
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Cabling requirements for optical fibers are as follows:
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15.2 Cable Connections

This section describes the cable connections in different scenarios.
15.2.1 Cable Connections (-48 V DC, Six RRU3008s)
This section describes all the cable connections in a base station configured with six RRU3008s
in the -48 V DC power supply scenario.
15.2.2 Cable Connections (-48 V DC, Six RRU3804s)
This section describes all the cable connections in a base station configured with six RRU3804s
in the -48 V DC power supply scenario.
15.2.3 Cable Connections (-48 V DC, Six RRU3201s)
This section describes all the cable connections in a base station configured with six RRU3201s
in the -48 V DC power supply scenario.
15.2.4 Cable Connections (-48 V DC, Six RRU3908s)
This section describes all the cable connections in a base station configured with six RRU3908s
in the -48 V DC power supply scenario.
15.2.5 Cable Connections (-48 V DC, Three RRU3908s+Three RRU3804s)
15-4
PGND cables for the base station must be connected to the same ground bar.
PGND cables must be buried in the ground or routed indoors. They should not be routed
overhead before they are led into the equipment room.
The exterior of the coaxial wire and the shield layer of the shielded cable must have proper
electrical contact with the metal surface of the equipment to which they are connected.
PGND cables and signal cables must be installed in an untangled and orderly fashion. A
certain distance must be reserved between them to prevent interference from each other.
Fuses or switches must not be installed on the PGND cables.
Other devices must not be used for electrical connections of the PGND cables.
All the metal parts in the housing of the equipment must be reliably connected to the ground
terminal.
E1 cables must not cross power cables, PGND cables, or RF cables when routed. If
transmission cables are routed with power cables, PGND cables, or RF cables in parallel,
the spacing between them must be greater than 30 mm (1.18 in.).
E1 cables are routed straightly and bound neatly with cable ties.
Sufficient slack is provided in E1 cables at turns.
Do not stretch, step on, or place heavy objects on optical fibers. Keep the fibers away from
sharp objects.
When optical fibers are routed, the extra length of the fibers must be coiled around special
devices, such as a fiber coiler.
When coiling optical fibers, apply even strength. Do not bend the fibers with force.
Vacant optical connectors must be covered with dustproof caps.
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Copyright © Huawei Technologies Co., Ltd.
DBS3900(ICR)
Installation Guide
Issue 01 (2011-03-30)