Operating instructions

SG4000 Installation and Operation Manual
Section 5
Installation
Installation consists of splicing the six- or eight-fiber service cable to the transportation fiber,
installing the housing and electronics on the messenger strand, applying power, and placing the
unit in service.
To avoid excess weight and the possibility of damage during installation, the housing is
normally mounted prior to inclusion of the expensive electronic components. It is assumed that
the node components have been removed, configured, and tested on the bench and only minimal
alignment may be required following field installation.
Splicing Fiber
The service cable can be spliced to the transportation cable at any time during the node
installation. Splicing does not need to coincide with the installation of the housing.
Fusion splicing is recommended because it has low insertion loss and is the most reliable
method. A technician experienced in splicing fiber should do the splicing.
To perform fusion splicing:
1 Obtain the 50-foot service cable with the compression fitting from the node package.
Figure 5-1 illustrates this cable.
Figure 5-1
Service cable connection and compression fitting
Compression
nut
Main
body
Service
cable
Water
seal nut
SC/APC
connectors
Heat
shrink
39.8” ± 1.5”
2 Splice each fiber according to procedures recommended by the manufacturer of the splicing
equipment being used.
A blue-coded fiber is suggested for the forward signal distribution and a brown-coded fiber is
recommended for the return path. Cleanliness in the work area is essential.