l 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.).
l E1 cables are routed straightly and bound neatly with cable ties.
l Sufficient slack is provided in E1 cables at turns.
Cabling requirements for fiber optic cables are as follows:
l Do not stretch, step on, or place heavy objects on fiber optic cables. Keep the cables away
from sharp objects.
l When fiber optic cables are routed, the extra length of the cables must be coiled around
special devices, such as a fiber coiler.
l When coiling fiber optic cables, apply even strength. Do not bend the cables with force.
l Vacant optical connectors must be covered with dustproof caps.
8.5.2 Installing a Cable Outlet Module in a Cabinet
During cable installation, you must lead the cables through the cable outlet modules at both sides
of the bottom of the cabinet for effective sealing.
Context
There is a cable outlet module at each side of the bottom of an APM30H, TMC11H, IBBS200D,
or IBBS200T, as shown in Figure 8-58.
NOTE
l Cable outlet modules for an APM30H, TMC11H, IBBS200D, or IBBS200T are the same. The
following description is based on the cable outlet modules in a TMC11H.
l When two IBBS200Ds or two IBBS200Ts are stacked, you do not need to install cable outlet modules
in the upper IBBS.
Figure 8-58 Cable outlet modules in a TMC11H
Figure 8-59 shows the exterior of cable outlet modules of the TMC11H.
NOTE
l The cables can be routed through proper cable holes as required.
l The recommended cable routes through the cable outlet module is shown in Figure 8-59. Different
color indicates different cross-sectional areas of cables. The same color indicates the same cross-
sectional area. You can route the cables that are not mentioned through vacant cable holes matching
their cross-sectional areas.
Different colors of cable holes in the figure stand for different cable diameters.
DBS3900 (Ver.B)
Installation Guide
8 Outdoor Scenario with DC Power Supply (BBU Installed
in a +24 V DC APM30H)
Issue 06 (2011-09-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
259
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