Installing An Rru Alarm Cable - Huawei DBS3900 LTE Installation Manual

RRU3260
Installation Guide
----End

9.8 Installing an RRU Alarm Cable

This section describes the procedure for installing an RRU alarm cable.
Procedure
Step 1 Use an M3 Phillips screwdriver to loosen the screws on the dustproof cap on the EXT_ALM
port and remove the dustproof cap.
Step 2 Connect the waterproof DB15 connector at one end of the RRU alarm cable to the EXT_ALM
port on the RRU, and connect the eight cord end terminals at the other end to external alarm
devices, as shown in
Figure 9-18 Installing an RRU alarm cable
Step 3 Use an M3 Phillips screwdriver to tighten the posts on both sides of the waterproof DB15 male
connector to 0.4 N·m (3.54 lbf·in.).
Step 4 Route the cables according to the instructions in
ties to bind the cables.
Issue ()
5. Route the cables according to the instructions in
use cable ties to bind the cables.
6. Label the installed cables according to the instructions in Attaching an L-Shaped
Label.
Figure
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
9-18.
9.1 Cabling
9 Installing RRU Cables
9.1 Cabling Requirements, and then
Requirements, and then use cable
110