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RRU3269
Installation Guide
Procedure
Step 1 Connect the DIN male connector at one end of the RRU RF jumper to the ANT port on the RRU,
and use a torque wrench to tighten the connector to 25 N·m (221.27 lbf·in.), as shown in
7-13.
Figure 7-13 Installing an RRU RF jumper
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 Connect the other end of the RF jumper to the external antenna system.
Step 3 Waterproof the connectors of the RF jumper by referring to
Issue Draft A (2014-10-31)
NOTICE
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Copyright © Huawei Technologies Co., Ltd.
7 Installing RRU Cables
Figure
7-14.
Figure
47
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