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RRU3268
Installation Guide
Figure 9-20 Installing an RRU alarm cable
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.
l Remove insulated protective tubes from the cord end terminals before connecting the cord end terminals
l Use insulating adhesive tapes to wrap cord end terminals that are not in use and fix them at a proper
Figure 9-21 Removing insulated protective tubes from the cord end terminals
Issue 10 (2015-12-30)
NOTE
NOTE
to devices, as shown in
Figure
position based on the onsite situations. This prevents false alarm reporting and equipment damage due to
contact of exposed cables.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
9-21.
Figure 9-22
shows the method for handling cord end terminals not in use.
9 Installing RRU Cables
104
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