Motorola SG 2000 用户手册
SG 20 00 Ins tal la tion and O pera tion M anua l
Section 4
Installation
Installation consists of splicing the six-fiber service cable to the transportation fiber, installing the
housing and electronics on the messenger strand, applying power, and placing the unit in service.
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 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.
mounted prior to inclusion of the 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.
S p lic ing F ibe r
The six-fiber 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.
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.
technician experienced in splicing fiber should do the splicing.
To perform fusion splicing:
1
Obtain the 50-foot, six-fiber service cable with the compression fitting from the node package.
Figure 4-1 illustrates this cable:
Figure 4-1 illustrates this cable:
F i g u r e 4 - 1
S e r v i c e c a b l e c o n n e c t i o n a n d c o m p r e s s i o n f i t t i n g
S e r v i c e c a b l e c o n n e c t i o n a n d c o m p r e s s i o n f i t t i n g
Compression
nut
Main
body
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.
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.