Installing A Cable Outlet Module In An Omb - Huawei DBS3900 Installation Manual

DBS3900 (Ver.B)
Installation Guide
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Cabling requirements for E1 cables are as follows:
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Cabling requirements for fiber optic cables are as follows:
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9.4.2 Installing a Cable Outlet Module in an OMB

During cable installation, you must remove cable outlet modules at the bottom of an OMB, lead
cables through the cables holes on the cable outlet modules, and then reinstall the modules for
effective sealing.
Context
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Issue 06 (2011-09-15)
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 fiber optic cables. Keep the cables away
from sharp objects.
When fiber optic cables are routed, the extra length of the cables must be coiled around
special devices, such as a fiber coiler.
When coiling fiber optic cables, apply even strength. Do not bend the cables with force.
Vacant optical connectors must be covered with dustproof caps.
Cable outlet modules are installed on both sides at the bottom of an OMB, as shown in
Figure 9-14.
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9 Outdoor Scenario with DC Power Supply (BBU Installed
in an OMB)
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