Step 3
Label the installed cable by referring to Attaching a Cable-Tying Label.
----End
7.6 Installing an RRU RF Jumper
This section describes the procedure for installing an RRU RF jumper.
Procedure
Step 1
Link the type N connector at one end of the RF jumper to the ANT port and use a torque wrench
to tighten the connector to 1N·m (8.85 lbf·in.), as shown in
Figure 7-8
Installing an RRU RF jumper
CAUTION
On AC-powered electric railways, such as high speed railways, when leaky cables are connected
to RRUs installed in tunnels, high-voltage-resistance DC blocks must be installed between RRU
RF jumpers and the leaky cables to protect the RRUs against damage.
Step 2
Link the other end of the RF jumper to the external antenna system.
Step 3
Waterproof the connectors of the RF jumper by referring to
RRU3232
Installation Guide
7 Installing RRU Cables
Issue 05 (2011-10-20)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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