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Introduction to seven class network wire and cable advantages and disadvantages compared

Date: 2016-08-12 Source: www.dg-taifeng.com

  As is known to all, in signal transmission line in network cabling, network with transmission medium, cable and optical fiber are often used in wiring the two transmission medium.Cable types are divided intoShielded twisted-pair cableandUnshielded twisted pairThese two, optical fiber is also divided into multimode optical fiber and single mode fiber.Today, here share with youClass seven network lineCompared with cable quality.
  1, aluminum foil shield twisted-pair FTP, larger bandwidth, strong anti-jamming ability, has the characteristics of low smoke zero halogen.Relative, shielded wire than shielding wire price and installation costs, cable bending performance is a bit poor.More than six before class line and shielding system using this form.
  2, unshielded twisted pair utp, most of the wiring system is the present domestic applications, suitable for transmission bandwidth below 250 MHZ, no special performance requirements of network applications, its advantage is the overall performance is good, price cheap, construction and maintenance more convenient.Six wiring system has reached the limit the performance of the unshielded twisted pair.
  3, independent shielded twisted-pair STP, each pair of lines has a foil shield, with four line together with a common metal braided shielding layer, this is seven classNetwork lineThe standard structure.It is suitable for the application of high-speed Internet, providing highly confidential transmission, support the new application of the future, help to unify the current application of the network cabling platform, making everything from E-mail to multimedia video information, can be in the same set of high-speed transmission in the system.
  Additional shielding layer makes seven class line has a larger wire diameter, installation of routing and termination in the design of these characteristics require space cannot be too careful, want to leave a lot of space and large bending radius
  Moreover, due to its excellent shielding design and high bandwidth, a typical seven kind of channel can even provide a pair of line 862 MHZ bandwidth for transmission cable TV signal, in another line to transmit analog audio signal, and then in the third and fourth line of high speed local area network information transmission.The application in the present is unimaginable, but soon will be seven class wiring system implementation.
  Compared with optical fiber LAN, seven class network line system solution provides the performance and the bandwidth of hope, but its overall cost just a fraction of a fiber.Some people may think the bandwidth of the optical fiber system can give people enough, seven class cable and optical fiber cable with prices close to.However, if considering the fiber optic router, optical switches and optical network card cost factors, the price advantage of the fiber will quickly lost.
  4, optical cable, especially the single mode optical fiber cable can be used for high speed network transmission, and has the support of innate immune to electromagnetic interference, strong reliability, the advantages of long distance transmission, is the ideal network transmission medium, its status is increasingly important.But the cable equipment, materials and termination costs are relatively expensive, installation is relatively complex, so the general suitable for long distance and large capacity of wiring.Now 62.5/125 mu m multimode fiber in the main integrated wiring system have become the mainstream wiring medium, application in the level system is also becoming increasingly widespread.
  To sum up, for the choice of network cabling system, need to have different choice due to the different requirements, suits own is the rational choice.


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