Installing An Rru Alarm Cable - Huawei RRU3971 Installation Manual

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8.8 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, as shown in
Figure 8-22 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.).
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.
NOTE
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8.1 Cabling Requirements
Figure 8-22.
8 Installing RRU Cables
and then
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