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RRU3260
Installation Guide
9.6 Installing an RRU RF Jumper
This section describes the procedure for installing an RRU RF jumper.
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
Figure
Figure 9-14 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 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
Issue 10 (2015-12-30)
9-14.
NOTICE
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9 Installing RRU Cables
Figure
9-15.
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