Figure 9-19 Installing an RRU alarm cable
NOTE
Install the waterproof DB15 male connector on the RRU alarm cable with caution, preventing the pin assignment
from being damaged.
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 Connect the eight cord end terminals at the other end to external alarm devices.
NOTE
Use insulating adhesive tapes to wrap cord end terminals that are not in use and fix them at a proper position
based on the onsite situations. This prevents false alarm reporting and equipment damage due to contact of
exposed cables. Figure 9-20 shows the method for handling cord end terminals not in use.
Figure 9-20 Method for handling cord end terminals that are not in use
Step 5 Route the cables according to the instructions in 9.1 Cabling Requirements, and then use cable
ties to bind the cables.
RRU3832&RRU3632
Installation Guide
9 Installing RRU Cables
Issue 05 (2014-06-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
104
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