Tài liệu Datasheet - FO - Cable - F8 Dry core Cable doc

TECHNICAL SPECIFICATION
LOOSE TUBE
SINGLE JACKET, NON ARMOR SELF-SUPPORT
FIGURE-8 DRY CORE CABLE
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REV: 3.0 KRSI-610C
PAGE 3 OF 7
1. SCOPE
1.1 Application
This specification covers the general requirements for fiber optic telecommunication
cables used for aerial application.
1.2 Cable Description
1) Single Jacket, Non Armor, Self-support Figure-8
Single or Multi mode color coded fibers, filled color coded loose tubes, PE filler (if
required), SZ-stranded around the dielectric central strength member, water blocking
tape, dielectric strength member, suspension wire and outer PE jacket
2. OPTICAL FIBER
The optical, geometrical and mechanical performance of the optical fiber shall be in
accordance with Table 1 and 2 below.
Table 1. The Optical, Geometrical and Mechanical Performance of the Multi Mode Fiber
SPECIFICATION
ITEMS UNITS
50 Multi Mode 62.5 Multi Mode
Attenuation dB/km
 3.5 at 850nm
 1.0 at 1300nm
 3.5 at 850nm
 1.0 at 1300nm
Bandwidth MHz.km
 400 at 850nm
 600 at 1300nm

 200 at 850nm
 400 at 1300nm
Numerical Aperture -
0.20 0.015 0.275 0.015
Core Diameter
 50 3.0 62.5 3.0
Core Non-circularity %
 6.0  6.0
Cladding Diameter
 125 2.0 125 2.0
Cladding Non-circularity %
 2.0  2.0
Core/Cladding Concentricity Error
  3.0  3.0
Coating Diameter
 245 15 245 15
Proof Test kpsi
 100  100
*Note) Superior performance available upon request.
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REV: 3.0 KRSI-610C
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Table 2. The Optical, Geometrical and Mechanical Performance of the Single Mode Fiber
ITEMS UNITS SPECIFICATION
Attenuation dB/km
 0.40 at 1310nm
 0.25 at 1550nm
Chromatic Dispersion ps/nm.km
 3.2 at 1285nm ~ 1330nm
 18 at 1550nm

Zero Dispersion Wavelength nm 1300 ~ 1324
Zero Dispersion Slope ps/nm
2
.km
 0.093
Cut-off Wavelength
(cc, 22m of a cabled fiber)
nm
 1270
Mode Field Diameter
 9.3 10%
Mode Field Concentricity
  0.8
Cladding Diameter
 125 1.0
Cladding Non-circularity %
 1.0
Coating Diameter
 245 15
Proof Test kpsi
 100
*Note) Superior performance available upon request.
3. CABLE CONSTRUCTION
The construction of the cable shall be in accordance with Table 3 below.
Table 3. Construction of the Cable
ITEMS DESCRIPTION
Number of Fibers 2 ~ 144
Type of Fiber Single Mode or 62.5 Multi Mode or 50 Multi Mode
Loose Buffer Tube PBT (Polybutylene Terephthalate)
Filling Compound

in Loose Buffer Tube
Thixotropic Jelly Compound
Water Blocking Material Water Swellable Tape or Yarn (around the CSM)
Dielectric CSM
FRP (Fiberglass Reinforced Plastic)
with PE coating (if necessary)
Core Wrapping Tape
Water Swellable Tape
(To prevent the ingress of water)
Dielectric Strength Member
Glass yarns
(To provide the required tensile strength together
with the central strength member)
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Table 3. Construction of the Cable.(continued)
Suspension Wire
Galvanized 7 Stranded Steel Wires
Diameter of each wire : Nom. 2.0mm
Outer Jacket
Material : Black MDPE or HDPE
Thickness : Nom. 2.0mm
4. FIBER AND LOOSE BUFFER TUBE IDENTIFICATION
The color code of the loose buffer tubes and the individual fibers within each loose buffer
tube shall be in accordance with Table 4 below.
Table 4. The Color Code of the Individual Fibers and Loose Tubes
No. of Fibers/
Loose Buffer Tubes
Color

No. of Fibers/
Loose Buffer Tubes
Color
1 Blue 7 Red
2 Orange 8 Black
3 Green 9 Yellow
4 Brown 10 Violet
5 Grey 11 Pink
6 White 12 Aqua
5. PHYSICAL / MECHANICAL / ENVIRONMENTAL PERFORMANCE
The mechanical and environmental performance of the cable shall be in accordance with
Table 5 below. Unless otherwise specified, attenuation is measured before and after each
test in this section and all attenuation measurements required in this section shall be
performed at 1550nm for single mode fiber (SM) and at 1300nm for multi mode fiber
(MM).
Table 5. The Mechanical and Environmental Performance of the Cable
ITEMS
TEST METHOD AND
ACCEPTANCE CRITERIA
Compressive Loading
Resistance Test
# Test method: TIA/EIA-455-41A
Applied load: 110 N/cm
Duration of loading: 10 minutes
# Acceptance Criteria
Attenuation Increment:  0.10 dB (SM)
 0.20 dB (MM)
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REV: 3.0 KRSI-610C
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Table 5. The Mechanical and Environmental Performance of the Cable(continued)
ITEMS
TEST METHOD AND
ACCEPTANCE CRITERIA
Repeated Impact Test
# Test method: TIA/EIA-455-25B
Height of impact: 150mm
Drop hammer mass: 2.0kg
No. of impact cycles: 20 cycles
# Acceptance Criteria
Attenuation Increment:  0.10 dB (SM)
 0.20 dB (MM)
No jacket cracking and fiber breakage
Cyclic Flexing Test
# Test method: TIA/EIA-455-104A
Sheave diameter: 20D (D = cable diameter)
No. of flexing cycles: 25 cycles
Flexing speed: 30 cycles/minute
# Acceptance Criteria
Attenuation Increment:  0.10 dB (SM)
 0.20 dB (MM)
No jacket cracking and fiber breakage
Cable Twist Test
# Test method: TIA/EIA-455-85A
Cable length twisted: 2m
(Suspension wire and web shall be removed prior to
testing the cable)
No. of twist cycles: 10 cycles
Twist angle:  180
# Acceptance Criteria

Attenuation Increment:  0.10 dB (SM)
 0.20 dB (MM)
No jacket cracking and fiber breakage
Temperature Cycling Test
# Test method: TIA/EIA-455-3A
Temperature cycling schedule
: 23 -25 65 -25 65 23
Soak time at each temperature: 8hours
# Acceptance Criteria
Attenuation increment:  0.15 dB/km (SM)
 0.20 dB/km (MM)
Water Penetration Test
# Test method: TIA/EIA-455-82B
Length of specimen: 3m
(Suspension wire and web shall be removed prior to
testing the cable)
Height of pressure head: 1m
Test time: 24 hours
# Acceptance Criteria
No leakage through the open cable end
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REV: 3.0 KRSI-610C
PAGE 7 OF 7
6. REPRESENTATIVE SPAN LENGTHS
Representative span lengths for installation are in accordance with Table 6 below.
Table 6. Representative Span Lengths
NESC Loading District
Fiber count Max. Span length (m)
36 200
120 170

* Span length based on 1% installation sag in heavy storm area as defined in Rule 251 of
the National Electric Safety code (NESC). Other span and sag condition is also
available if required by customer.
7. PACKING AND MARKING
7.1 Cable Marking
The jacket shall be marked at intervals of one meter with following information.
1) Cable type and fiber counts
2) Name of the manufacturer
3) Year of manufacture
4) Length marking
7.2 Cable Packing
7.2.1 Standard length of cable shall be 2km. Other cable length is also available if required by
customer.
7.2.2 Each length of the cable shall be wound on a separate wooden reel.
7.2.3 Both ends of the cable shall be sealed with a suitable plastic cap to prevent the entry of
moisture during shipping, handling and storage.
7.2.4 Wood-fiber board or circumference battens shall be laid on cable between flanges and
fixed by steel bands.
7.2.5 The cable ends shall be securely fastened to the reel to prevent the cable from becoming
loose in transit or during placing operations.
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REV: 3.0 KRSI-610C
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7.3 Cable Reel
7.3.1 Details given below shall be distinctly marked on a weather proof materials on both
outer sides of the reel flange:
(1) Length of cable in meters
(2) Cable type and fiber counts
(3) Gross weight in kilograms
(4) Reel number

(5) Name of the manufacturer
(6) Year of manufacture
(7) Arrow showing the direction the drum shall be rolled
7.3.2 The cable shall be wound on the reel designed to prevent damages during shipment and
installation.
7.3.3 The arbor hole on each flange shall be lined with a metal plate.
== End of Specification ==