1.General
This clause contains the performance specifications for the optical fiber cables recognized in premises
cabling standards.
1.1Cable transmission performance
The outside plant telecommunications cable shall comply with ANSI/ICEA S-87-640. Inside plant optical
fiber telecommunications cable shall comply with ANSI/ICEA S-83-596.
Each cabled fiber shall meet the graded performance specifications of table 1.
Table 1 – Optical fiber cable transmission performance parameters
|
Optical fiber cable type
|
Wavelength (nm)
|
Maximum attenuation (dB/km)
|
Minimum information transmission capacity for overfilled launch (MHz· km) |
|
50/125 mm multimode |
850 |
3.5 |
500 |
|
1300 |
1.5 |
500 |
|
|
62.5/125 mm multimode |
850 |
3.5 |
160 |
|
1300 |
1.5 |
500 |
|
|
singlemode inside plant cable |
1310 |
1.0 |
N/A |
|
1550 |
1.0 |
N/A |
|
|
singlemode outside plant cable |
1310 |
0.5 |
N/A |
|
1550 |
0.5 |
N/A |
|
|
NOTE - The information transmission capacity of the fiber, as measured by the fiber manufacturer, can be used by the cable manufacturer to demonstrate compliance with this requirement. |
|||
1.2 Physical cable specifications
The optical fiber cable construction shall consist of 50/125 m m or 62.5/125 m m multimode optical fibers or
singlemode optical fibers, or a combination of these media. Individual fibers and groups of fibers shall be
identifiable in accordance with ANSI/TIA/EIA-598-A. The cable shall be listed and marked as required under the applicable electrical code and local building code requirements.
1.3 Inside plant cable specifications
The mechanical and environmental specifications for inside plant optical fiber cable shall be in accordance
with ANSI/ICEA S-83-596.
2- and 4-fiber cables intended for horizontal or centralized cabling shall support a bend radius of 25 mm
(1 in) under no-load conditions. 2- and 4-fiber cables intended to be pulled through horizontal pathways
during installation shall support a bend radius of 50 mm (2 in) under a pull load of 222 N (50 lbf). All other
inside plant cables shall support a bend radius of 10 times the cable outside diameter when not subject to
tensile load, and 15 times the cable outside diameter when subject to tensile loading up to the cable's rated
limit.
1.4 Outside plant cable specifications
The mechanical and environmental specifications for outside plant optical fiber cable shall be in accordance
with ANSI/ICEA S-87-640.
Outside plant optical fiber cables shall be of a water-block construction and meet the requirements for
compound flow and water penetration as established by ANSI/ICEA S-87-640. Outdoor cable shall have a
minimum pull strength of 2670 N (600 lbf).
Outside plant cables shall support a bend radius of 10 times the cable outside diameter when not subject to
tensile load, and 20 times the cable outside diameter when subject to tensile loading up to the cable's rated
limit.
1.5 Drop cable
Drop cables are typically small diameter, low fiber count cables with limited unsupported span distances.
They are used to feed a small number of fibers from a higher fiber count cable into a single location. Drop
cable shall have a minimum pull strength of 1335 N (300 lbf).