Huawei DBS3900 Installation Manual page 105

DBS3900 (Ver.B)
Installation Guide
Context
Procedure
Step 1 Install an E1/T1 surge protection transfer cable, as shown in
1.
2.
Step 2 Route the cables by referring to
the cables.
Step 3 Label the installed cables by referring to Attaching an L-Shaped Label.
----End
Installing the E1/T1 Cable
This section describes the procedure and precautions to be taken for installing an E1/T1 cable.
Prerequisite
Ensure that both ends of the E1 cable are disconnected from any devices. Then, weld connectors
to the bare wires at one end of the E1 cable during the same session.
Context
Route the E1/T1 cable as follows:
Issue 06 (2011-09-15)
NOTE
The procedures for installing E1/T1 surge protection transfer cables in an APM30H and in a TMC11H are
the same. The following description is based on the procedure for installing an E1/T1 surge protection
transfer cable in an APM30H.
Link the DB26 connector at one end of the E1/T1 surge protection transfer cable to the E1/
T1 port on the GTMU, WMPT, or UTRP in the BBU, and then tighten the plastic screws
on the connector until the tightening torque reaches 0.25 N·m.
Link the DB25 connector at the other end to the INSIDE port on the UELP in the SLPU,
and then tighten the plastic screws on the connector until the tightening torque reaches 0.25
N·m.
Figure 6-82 Installing an E1/T1 surge protection transfer cable
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6 Outdoor Scenario with AC Power Supply (BBU Installed
6.5.1 Cabling Requirements, and then use cable ties to bind
in an APM30H)
Figure 6-82.
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