Description
In OMC’s 48F Stranded Loose Tube Armored Cable – GYFTSH, A FRP&PE cushion layer is located in the center of core as a metallic strength member. Single-mode/multimode Fiber are positioned in the loose tube, which is made of PBT materials and filled with filling compound. The loose tube is covered with Water Blocking Glass Yarn+ Corrugated Steel tape. A UV-LSZH materials cable Jacket guarantee the compactness and longitudinal water-blocking performance.
Standard color of fiber and tube
The color code of the individual fibers, shall be in accordance with the table as below
| No. | 1 | 2 | 3 | 4 | 5 | 6 |
| Color | Blue | Orange | Green | Brown | Gray | White |
| No. | 7 | 8 | 9 | 10 | 11 | 12 |
| Color | Red | Black | Yellow | Violet | Pink | Aqua |
Tube color code for 12~144 fibers:
| No. | 1 | 2 | 3 | 4 | 5 | 6 |
| Color | Blue | Orange | Green | Brown | Gray | White |
Cable Structure parameter
| Item | Contents | Unit | Value |
| Fiber count | Number | / | 48 |
| Fiber type | / | / | G657A1 |
| Cable structure | / | / | 1+6 |
| Fibers per tube | Count | / | 12 |
| Loose tube | Material | / | PBT |
| Nominal Diameter | mm | 2.5 | |
| Central strength member | Material | / | FRP &PE cushion layer |
| Nominal Diameter | mm | 2.6 | |
| PE cushion | mm | – | |
| Water blocking | Material | Water blocking glass yarn | |
| Peripheral strength member | Material | Corrugated Steel tape | |
| Sheath | Material | UV-LSZH | |
| Color | Black | ||
| Outer diameter | mm | 1.6±0.2 | |
| Attenuation (after cable) | 1310nm | dB/km | £0.36 |
| 1550nm | dB/km | £0.22 | |
| Cable diameter | ±0.3 | mm | 11.9 |
| Cable weight | ±5% | kg/km | 170 |
Mechanical & Environmental Performance
| Item | Contents | Value |
| Max. tensile load | Short term | 2500N fiber strain≤0.6% |
| Long term | 800N | |
| Max. crush resistance | Short term | 1000N/100mm |
| Long term | 300N/100mm | |
| Min. bending radius | Installation | 25 x cable diameter |
| Operation | 12.5 x cable diameter | |
| Temperature range | Operation | -40℃ ~ +70℃ |
| Installation | -20℃ ~ +60℃ | |
| Storage/transportation | -40℃ ~ +70℃ |
Optical fiber technical parameters
| Fiber style | Unit | SM 9/125 | MM 50/125 | MM 62.5/125 | |
| Condition | nm | 1310/1550 | 850/1300 | 850/1300 | |
| Attenuation | dB/km | ≤0.34/0.2 | ≤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 | ….. | ….. | |
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