October 21, 2014, Tuesday, 293

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There are numerous types of Communication Cables available for sale today, but we depend on some kinds of Cables like Coaxial Cables, Drop Cables, UTP Cables and Fibre Optic Cables more often. These Cables are applicable in various kinds of data transfer in our life.

Coaxial cable is known as "coaxial" because it includes one physical channel that carries the signal surrounded (after a layer of insulation) by another concentric physical channel, both running along the same axis. The outer channel works as a ground. A number of these cables or pairs of coaxial tubes can be placed in one outer sheathing and, with repeaters, can carry information for any good distance.

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PVC jacketed Bus Drop Cable is meant for use as drop cables from overhead busways and allows easy relocation of plant equipment.Resistant against oils, lubricants, acids, alkalies, ozone, water and abrasion. Individual grounds per conductor. Conductors, grounds and filler are cabled for flexibility then wrapped in a separator to aid strippability. Rated for use in dry or wet locations.

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Unshielded Twisted Pair (UTP) cable contains 4 twisted pairs of wires, as many as 8 wires. The strands that constitute each wire will either be just one strand or multiple strands, usually known as solid or flex. Typically the solid is used to run through walls and ceilings and also the flex can be used to make drop cables (the cable from the wall plate to the pc) and patch cables (the cable from the patch panel towards the hub). Whether the exterior portion of the cable which contains the 4 twisted pairs, the jacket, is Plenum grade or Non-plenum grade is essential, it refers back to the Fire Codes.The pairs of wires in UTP cable are colored to ensure that it's possible to identify the same wire at each end. Furthermore, they're usually color coded by pair so the pairs may also be identified from end to finish.

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Fiber Optic Cables use light pulses to transmit information down fiber lines instead of using electronic pulses to deliver information in copper lines.Light pulses move easily on the fiber-optic line due to a principle known as total internal reflection. "This principle of total internal reflection states that when the angle of incidence exceeds a vital value, light cannot get out of the glass; instead, the light bounces in. If this principle is used to the construction of the fiber-optic strand, it is possible to transmit information down fiber lines in the form of light pulses.