Cabling process, the indispensable fiber optic cable, cable there are several, what are the advantages? Choose the type of cable should be from the cable use, the required transmission capacity, transmission bandwidth, price and other aspects of comprehensive consideration. Unshielded twisted pair cable types, shielded twisted pair, cable three categories. (1) unshielded twisted pair UTP, is currently the most widely used cabling system for transmission bandwidth below 250MHz, no special performance requirements of the network applications, the advantage of overall performance is good, cheap, construction and maintenance more convenient . Six cabling systems have reached the performance limits of unshielded twisted pair. (2) Aluminum foil shielded twisted pair FTP, large bandwidth, strong anti-interference performance, with low smoke and halogen-free characteristics. On the other hand, the shielding line is higher than the non-shielding line in terms of price and installation cost, and the cable bending performance is somewhat inferior. Six types of lines and before the screening system to use more of this form. (3) Independent shielded twisted pair STP, each pair has a line of aluminum foil shield, four pairs of wire together there is a common metal braided shield, which is the standard structure of seven lines. It is suitable for high-speed network applications, providing highly secure transmission, support for future new applications, help unify the current network application of the wiring platform, making the various information from e-mail to multimedia video, can be in the same high-speed system In transmission. The additional shields allow for a larger wire diameter for the seven types of cables. These features require special care in designing and installing routing and termination space, leaving a lot of room and a large bend radius. Corning Incorporated Seven types of cabling systems are introduced in China. As early as 1997, standardization organizations and manufacturers of cabling have proposed the concept of seven types of copper cabling systems. Among them, Corning announced seven types of cabling of 600MHZ in 1997. It offers a combined attenuation-to-crosstalk ratio of at least 500MHz and an overall bandwidth of 600MHz with connectors requiring a combined near-end skew of at least 60dB for all pairs at 600MHz. The super five system only requires 43dB at 100MHz, six at 250MHz the value of 46dB. And because of its excellent shielding design and high bandwidth, a typical Class 7 channel can even provide a pair of lines at a time, with a bandwidth of 862 MHz for transmitting cable television signals and an analog audio signal on the other pair, and then in the third , Four-wire transmission of high-speed LAN information. This kind of application is unimaginable at present, but will be realized by seven kinds of wiring systems in the near future, the seven kinds of wiring systems that the Corning Company of the United States introduces already have already led the trade to reach 1200MHz bandwidth at present. Compared with fiber LAN, seven kinds of system solutions provide the desired performance and bandwidth, but the overall cost is only a fraction of the fiber. Some people think that fiber optic systems can give people enough bandwidth, and fiber optic cable and seven types of cable prices. However, if you consider the cost of fiber routers, optical switches, and optical network cards, the price advantage of optical fibers is quickly lost. (4) Optical fiber cables, especially single-mode optical fiber cables, can be used for high-speed network transmission and have the advantages of innate electromagnetic interference immunity, strong reliability and long-distance transmission support. They are ideal network transmission media in the future and their status is increasingly important. However, cable equipment, materials and termination costs are more expensive, the installation is relatively complex, it is generally suitable for long-distance and high-capacity wiring. At present, 62.5 / 125μm multimode optical fiber cable has become the mainstream wiring medium in the integrated wiring trunk system, and the application in the horizontal system has also become increasingly widespread. Corning has now launched a full set of optical fiber-to-desktop optical cable routing system and this year 5 Month officially launched 10G optical cable cabling system. The new version of TIA / EIA-568-B.3 specifies the mechanical and transmission properties of optical fibers, connecting hardware and fiber jumpers. The most significant enhancement over the 568-A is the acceptance of 50 / 125μm multimode fiber and the addition of SC connectors as well as small component (SFF) fiber optic connectors for the work area. The use of SFF connectors offers many benefits to the end user. For example, the larger size of the SC connector does not support the industry trend towards higher density of device interfaces, and the use of SFF connectors makes it easy to work with RJ-45 Connect the two cores in the same space. Thanks to TIA's recognition of SFF fiber optic connectors, fiber optic equipment manufacturers such as CISCO, 3Com, IBM and others have incorporated these interface designs into their products. Printed Fabric,Patterns Fabric,Breathable Geometric Print,Woven Geometric Print Fabric SHAOXING HONEST IMP&EXP.CO.,LTD , https://www.transfer-printed.com