User's Manual

RRU3278

Installation Guide

8 Installing RRU Cables

Issue 05 (2017-03-10)

Huawei Proprietary and Confidential

Figure 8-15 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 3 Waterproof the ANT ports on the RRU, as shown in Figure 8-16.