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2018 - 10 - 10
AfricaCom is the biggest, best and most influential Tech & Telecoms event on the continent of Africa. It’s a place to meet everybody who’s anybody in African telecoms and technology, AfricaCom brings together 14,000 attendees, 450 speakers and 400 exhibitors. XDK will be exhibiting for the second time.   Whether your focus is connectivity, Infrastructure, disruptive technologies, digital series or ICT strategy, this is the place to network, learn and get deals done with us. We bring high density connectivity products to your business at the heart of African Tech &a...
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(GYTC8S) Figure 8 Self-Supporting Cable

The fibers,either of single-mode or multimode type, are placed in a loose tube made of high modulus plastic. The tubes are filled with a water-resistant filling compound. A steel wire locates in the center of core as a metallic strength member. The tubes (and fillers) are stranded around the strength member into a compact and circular cable core. After PSP is applied around the cable core, this part of cable accompanied with the stranded wires as the supporting part are completed with a polyethylene (PE) sheath to be figure 8 structure. This kind of cable is specifically applied for self-supporting aerial installation


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Accurate fiber excess length ensure a good performance of tensile strength and temperature.

High strength loose tube that is hydrolysis resistant and special tube filling compound ensure a critical protection of fiber.

The following measures are taken to ensure the cable watertight:

Steel wire as the central strength member

Loose tube filling compound

100% cable core filling

PSP enhancing moisture-proof


1) Cable Drawing

(GYTC8S) Figure 8  Self-Supporting Cable

(GYTC8S) Figure 8  Self-Supporting Cable

 

2)Fiber Allocation Scheme

Fiber number

Tube number

Fiber per tube

Fiber type

24-144

1-12

2-12 F/Tube

OS1 OS2

OM1,OM2, OM3,OM4

 

3)Cable construction details

         Items

 Description

Number of fiber

24-144cores

Moisture Barrier

Water blocking system

Central strength member

Material

FRP

size

1.4mm

Mental strength member

material

Steel wire

diameter

1.0mm*7

Gallus

material

PE

diameter

2.2mm*2.8mm

Loose tube

material

PBT

diameter

Ф2.2(outer/inner)

Tube-filling

material

Tube filling compound

Outer armored

materail

corrugated steel tape

Outer sheath

material

PE

diameter

1.70±0.2mm

 

4)Standard color of fiber and tube

The color code of the tubes and the individual fibers, shall be in accordance with  the table as below:

Standard Colour Identification

No.

1

2

3

4

5

6

Color

Blue

Orange

Green

Brown

Slate

White

No.

7

8

9

10

11

12

Color

Red

Black

Yellow

Violet

Pink

Aqua

Note: The color can be required by customers.

 

 5)Cable Mechanical characteristic

 

Items

Cable diameter

Weight

24 cores to60 cores

5.5*10.0±0.5mm

145 ±5 kg/km

72cores

13.1±0.5mm

290±10kg/km

96cores

14.7±0.5mm

330±10kg/km

144cores

17.9±0.5mm

420±10kg/km

Installation Temperature range  

-15--+60

Operation and transport temperature

-40-+70

Min Bending Radius(mm)

Long term

10D

short term

20D

Allowable Tensile Strength(N)

Long term

3000

short term

7000

Crush Load (N/100mm)

Long term

1000

short term

3000

 

 6)Fiber characteristic

Fiber style

Unit

SM

G652D

MM

50/125

MM 62.5/125

condition

nm

1310/1550

850/1300

850/1300

attenuation

dB/km

≤0.36/0.23

≤3.0/1.0

≤3.0/1.0

Dispersion

1310nm

Ps/(nm*km)

≤18

.....

.....

1550nm

Ps/(nm*km)

≤22

.....

.....

Bandwidth

850nm

MHZ. KM

.....

≧400

≧160

1300nm

MHZ. KM

.....

≧800

≧500

Zero dispersion wavelength

nm

≧1302,

≤1322

.....

.....

Zero dispersion slope

nm

≤0.091

.....

.....

PMD Maximum Individual Fiber


≤0.2

.....

.....

PMD Design Link Value

Ps(nm2*km)

≤0.08

.....

.....

Fiber cutoff wavelength λc

nm

≧1180,≤1330

.....

.....

Cable cutoff wavelength λcc

nm

≤1260

.....

.....

MFD

1310nm

um

9.2±0.4

.....

.....

1550nm

um

10.4±0.8

.....

.....

Numerical Aperture(NA)


......

0.200±0.015

0.275±0.015

Step(mean of bidirectional measurement)

dB

≤0.05

≤0.10

≤0.10

Irregularities over fiber length and point discontinuity

dB

≤0.05

≤0.10

≤0.10

Difference backscatter coefficient

dB/km

≤0.03

≤0.08

≤0.10

Attenuation uniformity

dB/km

≤0.01

.......

.......

Core diameter

um

......

50±1.0

62.5±2.5

Cladding diameter

um

125.0±0.1

125.0±0.1

125.0±0.1

Cladding non-circularity

%

≤1.0

≤1.0

≤1.0

Coating diameter

um

242±7

242±7

242±7

Coating/chaffinch concentrically error

um

≤12.0

≤12.0

≤12.0

Coating non circularity

%

≤6.0

≤6.0

≤6.0

Core/cladding concentricity error

um

≤0.6

≤1.5

≤1.5

Curl(radius)

um

≤4

.....

.....

aerial , duct and direct buried.


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