Procedure
Step 1 Link the DIN connector at one end of the RF jumper to the ANT port and use a torque wrench
to tighten the connector to 25 N·m (221.27 lbf·in.), as shown in Figure 8-8.
Figure 8-8 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 Figure 8-9.
RRU3201
Installation Guide 8 Installing RRU Cables
Issue 06 (2012-04-16) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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