Huawei DBS3900 LTE Installation Manual page 55

RRU3260
Installation Guide
Figure 7-6 Hoisting fiber optic cables onto the tower
(1) Lifting sling
Before hoisting fiber optic cables onto the tower, connect the fiber optic cables to the RRU or
BBU based on the labels on both ends of the cables and determine the hoisting direction.
1.
2.
Issue ()
CAUTION
After climbing up to the tower, installation engineer A secures the fixed pulley to the tower
platform support and leads the lifting sling through the fixed pulley.
Installation engineer B places the fiber coiler for coiling fiber optic cables on the fiber
spools, and installation engineer D lead the lifting sling through the stretch sling of the fiber
optic cables and use the other sling as a traction sling to secure the cables 4 m (13.12 ft)
away from the lifting sling, as shown in
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
7 Hoisting an RRU and Related Cables onto a Tower
(2) Fixed pulley
Figure 7-7.
(3) Traction sling
47