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RRU3931E
Installation Guide
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Fiber optic cables must be routed as follows:
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1.7.2 Cable Connections
This section describes the connections of the canles.
Figure 1-20
Issue Draft A (2016-03-30)
PGND cables for a RRU3931E must be connected to the same ground bar.
PGND cables must be buried in the ground or routed indoors. They must not be routed
overhead before they are led into the equipment room.
The exterior of a coaxial wire and the shield layer of a 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 bound separately in an untangled and orderly
fashion. A certain distance must be reserved between them to prevent mutual
interference.
Fuses or switches must not be installed on PGND cables.
Other devices must not be used for electrical connections of PGND cables.
All the metal parts in the housing of the RRU3931E must be reliably connected to the
ground terminal.
PGND cables must be tubed when routed.
Signal cables must be routed as follows:
Signal cables must not cross power cables, PGND cables, or RF cables when routed. If
transmission cables are routed parallel to power cables, PGND cables, or RF cables, the
spacing between them must be greater than 30 mm.
Signal cables must be routed straightly and bound neatly with cable ties.
Sufficient slack must be provided in signal cables at turns.
A minimum of three qualified and trained personnel are required to route fiber optic
cables.
The operating temperature of fiber optic cables ranges from -40
current temperature is out of the range, additional protection measures must be taken or
the cable routing must be changed.
Cables must be routed in an untangled and orderly fashion.
Fiber optic cables must not be bound at turns.
Fiber optic cables cannot be stretched with too much force or stepped on, and they must
be far away from sharp objects. Heavy objects cannot be placed on fiber optic cables.
When fiber optic cables are routed, the excess of the cables must be coiled around
special devices, such as a fiber coiler.
Fiber optic cables must be coiled gently and must not be bent in a forcible manner.
Vacant optical connectors must be covered with dustproof caps.
Fiber optic cables cannot be squeezed by a cabinet door when routed through a cabinet.
When routed on the tower platform, the fiber optic cables must be laid out along the
guardrail within the shortest distance.
When routed close to a device on the tower, the fiber optic cables must be secured to the
guard rail or pole with cable clips. The RRU3931E must not be far away from the
position for securing the fiber optic cables.
The excess of the fiber optic cables must be coiled and secured on the tower.
shows the cable connections for a RRU3931E.
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Copyright © Huawei Technologies Co., Ltd.
1 RRU3931E Installation Guide
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