Description
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telephone cable how many cores
Fiber to the home aerial drop cable (2core FTTH) Specification
1. Cable Description
FTTH Cable directly connected to their homes, their bandwidth, wavelength and transmission technology type are not restricted. The optical fiber unit id positioned in the centre. Two parallel strength member are placed at the two sides. A steel wire as the additional strength member is also applied ,then, the cable is completed with a black LSZH sheath.
2. Cable Drawing
<Cross-sectional Drawing of Cable>
Note : Structure drawing just for reference, please check the following details.
3. Application
1.Adopted to outdoor level and vertical distribution.
2.Suitable for connect with communication equipment.
3.Long distance and local area network communication.
4. Characteristics
1. Good mechanical and enviromental characteristic
2. Anti-UV charateristics meet the requirements of relevant standards
3. The mechanical charateristics meet the requirements of relevant standards
4. Soft ,flexiable ,easy to lay and splice,and with big capacity data transmission
5. Meet various requirements of market and clients
5. Features:
Cable construction details
| Items | Description | |
| Number of fiber | 2 cores | |
| Fiber type | ITU- G652D | |
| Self support
Messenger wire |
material | Galvanized steel wire |
| diameter | 1.2mm and 0.4*7mm | |
| Outer sheath | material | LSZH |
| diameter | 1.8±0.2mm | |
| Cable size (Height * width) | 3.0（±0.05）*7.6（±0.2） | |
| Messenger sheath thickness | 0.5mm | |
| Cable weight | 35KG±1KG | |
6. Standard color of fiber and tube
The color of the individual fibers (EIA/TIA-598), shall be in accordance with the table as below:
| Standard Colour Identification | |
| No. | 1 |
| Color | Blue |
Out sheath is black.
7. Cable Mechanical characteristic
| Items | Description | |
| Installation Temperature range | -10±70℃ | |
| Storage or shipping range | -20±80℃ | |
| Operation and transport temperature | -20±80℃ | |
| Span length | 50m | |
| MOT (maximum operation tension) | ≥ 0.5KN | |
| MAT (maximum allowable tension) | ≥ 1 KN | |
| Applied Load Crush Resistance | ≥ 0.5 KN/1 | |
| Shock resistance of cable | ≥ 3 times | |
| Min Bending Radius(mm) | Long term | 15D |
| short term | 30D | |
| Utilization time | ≥ 15 years | |
| Fiber length in cable compare with the cable length | ≥ 1% | |
8. Fiber characteristic
| Fiber style | Unit | SM
G652D |
SM
G657A1 |
MM 62.5/125 | ||
| condition | nm | 1310/1550 | 1310/1550 | 850/1300 | ||
| attenuation | dB/km | ≤0.36/0.23 | ≤0.4/0.3 | ≤3.0/1.0 | ||
| Dispersion | 1310nm | Ps/(nm*km) | ≤18 | ≤18 | ….. | |
| 1550nm | Ps/(nm*km) | ≤22 | ≤22 | ….. | ||
| Bandwidth | 850nm | MHZ. KM | ….. | ….. | ≧160 | |
| 1300nm | MHZ. KM | ….. | ….. | ≧500 | ||
| Zero dispersion wavelength | nm | 1314 ≤ λ0 ≤ 1324 | 1314 ≤ λ0 ≤ 1324 | ….. | ||
| Zero dispersion slope | ps/(nm²×Km) | ≤0.091 | ≤0.092 | ….. | ||
| PMD Maximum Individual Fiber | [ps/√km] | ≤0.2 | ≤0.2 | ….. | ||
| PMD Design Link Value | ps/(nm²×Km) | ≤0.08 | ≤0.08 | ….. | ||
| Fiber cutoff wavelength λc | nm | ≧1180,≤1330 | ≧1180,≤1330 | ….. | ||
| Cable cutoff wavelength λcc | nm | ≤1260 | ≤1260 | ….. | ||
| MFD | 1310nm | um | 9.2±0.4 | 8.6±0.4 | ….. | |
| 1550nm | um | 10.4±0.8 | 10.1±0.5 | ….. | ||
| Numerical Aperture(NA) | …… | …… | 0.275±0.015 | |||
| Step(mean of bidirectional measurement) | dB | ≤0.05 | ≤0.05 | ≤0.10 | ||
| Irregularities over fiber length and point discontinuity | dB | ≤0.05 | ≤0.05 | ≤0.10 | ||
| Difference backscatter coefficient | dB/km | ≤0.03 | ≤0.03 | ≤0.10 | ||
| Attenuation uniformity | dB/km | ≤0.01 | ≤0.01 | ……. | ||
| Core diameter | um | …… | …… | 62.5±2.5 | ||
| Cladding diameter | um | 125.0±0.1 | 125±0.1 | 125.0±0.1 | ||
| Cladding non-circularity | % | ≤1.0 | ≤1.0 | ≤1.0 | ||
| Coating diameter | um | 242±7 | 245±5 | 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 | ≤0.6 | ≤1.5 | ||
| Curl(radius) | um | ≥4 | ≥4 | ….. | ||
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