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<br />. .... "'" <br />.....\.Ir-. <br /> <br />e <br /> <br />e <br /> <br />15. The cable core shall contain a water-blocking material. The water blocking material shall be <br />non-nutritive to fungus, electrically non-conductive and homogenous. It shall also be free from <br />dirt and foreign matter and shall be readily removable conventional non-toxic solvents.' .;, I : <br /> <br />16. Binders shall be applied with sufficient tension to secure the buffer tubes to the centr~ . <br />member without crushing the buffer tubes. . . : ,II' " <br /> <br />17. The binders shall be non-hygroscopic, non-wicking (or rendered so by the flooding <br />compound), and dielectric with low shrinkage. , I' .," 1'( . <br /> <br />18. The cable shall contain at least one ripcord under the sheath for easy sheath removal. ,." <br /> <br />19. Tensile strength shall be provided by high tensile strength aramid yams and/or fiberglass <br />yams. <br /> <br />, ',.1.,. <br /> <br />20. The high tensile strength aramid yams and/or fiberglass yams shall be helically stran~e~ <br />evenly around the cable core. .. ' 'I '.':. <br /> <br />21. The inner jacket shall be applied directly over the tensile strength members and water <br />blocking material. <br /> <br />22. The polyethylene shall contain carbon black to provide ultraviolet protection and shall not I <br />promote the growth of fungus, splits, and blisters. <br /> <br />. . . ., .! ,r ~ " <br /> <br />23. The cable jacket shall contain no metal elements and shall be of a consistent thickness. <br /> <br />Ii.' ., '1 :' ~ !" . ,; . <br /> <br />24. All optical fibers shall be sufficiently free of surface imperfections and inclusions to meet the <br />optical, mechanical, and environmental requirements of this specification. ,'I '., . <br /> <br />. . .: ~ r:t <br /> <br />25. Each optical fiber shall consist of a doped silica core surrounded by a concentric silica <br />cladding. <br /> <br />, , <br />Ir',.. . <br /> <br />26. The coating shall be mechanically or chemically strippable without damaging the fiber':I::: <br /> <br />" <br /> <br />27. The average change in attenuation at extreme operational temperatures (-400C to +700C) <br />shall not exceed 0.05 dBIkm at 1550 nm. The magnitude of the maximum attenuation change of <br />each individual fiber shall not be greater than 0.15 dBIkm at 1550 nm. <br /> <br />rr:' . <br /> <br />28. The maximum pulling tension shall be 2700 N (608 Ibf.) during installation (short tenn) and <br />890 N (200 Ibf.) long tenn installed. <br /> <br />IBM Global Services &:. La Porte ISO <br /> <br />peA 0 I September 30. 1998 <br /> <br />Page 18 of32 <br /> <br />I',:r <br />