Installation Guide

eRelay DBS3900 RRU3252/RRU3256 Installation Guide

7 Installing the RRU

Issue Draft A (2012-11-30)

Huawei Proprietary and Confidential

Step 3 Remove the attachment plate from the rear of the second RRU and then install it on the RRU

front, as shown in Figure 7-14.

Figure 7-14 Removing the attachment plate from the rear of the second RRU and then installing it

on the RRU front

1. Remove the attachment plate from the RRU rear using an inner hexagon screwdriver.

2. Install the attachment plate to the RRU front, and tighten the stainless steel screws on the

attachment plate with a torque of 4.8 N·m (44.25 lbf·in.) using a torque screwdriver.

Step 4 Install the second RRU on the main mounting bracket, as shown in Figure 7-15.

When you install two RRUs in back-to-back mode, ensure that the cabling cavities of these two RRUs

face the same direction.