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Share the gigabit Ethernet cable crystal head Internet cable connection correlates with crystal head connection

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

  shareGigabit Ethernet cable correlates with Ethernet cable
  LAN is a single computer or terminal, the use of communication lines connected to each other, follow certain agreement, exchange of information and realize resources sharing
  This year, TIA/EIA committee released formally integrated wiring six standard (the standard number: ANSI/TIA/EIA - 568 - B. 2-1), TIA568B since then become a fully able to meet the current network development, solve the set of basic standards in network construction.
  Despite the rapid development of the network, but in terms of network construction, gigabit network will become the universal demand of the construction of the network, as a skeleton of a network, six standard launched in Hong Kong can become a gigabit network, a new generation for the construction enterprises based on gigabit Ethernet network laid a solid foundation at the physical level.
  Six wiring system on the transmission rate can provide higher than 5 kinds of 2.5 times the bandwidth, at 100 MHZ is higher than the five kinds of ACR value of 300%.In terms of construction installation, six analogy super five classes also more difficult.
  Six wiring system of construction personnel must according to the standard of international standards to implement.Because "the more advanced copper abnormalities is more sensitive to the outside world. As the transmission rate rise, installation of the greater correctly or not will influence the performance of the system".Unreasonable pipeline design, non-standard installation steps, inadequate management system, all the test results of six kinds of wiring (including electrical properties and physical properties), and some will be difficult to repair failure, even only for laying a link to replace again.Enterprises should pay attention to the following six points for attention during the construction.
  One of the matters needing attention
  Because six types of the cable diameter than the average 5 kinds of line, in order to avoid the cable winding (especially in the elbow), when the pipeline design must pay attention to the diameter of the filling degree, generally 20 mm inner diameter line pipe to put 2 six class thread is advisable.
  Gigabit Ethernet cable, gigabit Ethernet cable connection
  Note 2
  Bridge design is reasonable, to ensure that the appropriate cable bending radius.Turn up and down or so bypass other trough, slope to gently, focus attention on both ends of the cable sagging stress after can cover on the premise of no pressure loss cable cover plate.
  Gigabit Ethernet cable, gigabit Ethernet cable connection
  Note 3
  Mainly pay attention to during the process of taking control of the tension, for cables with reel packaging, recommend two head at least all the arrangement is a worker, the scroll set on the anchor pole of homemade, pay-off the workers from the first scroll box out part of cable, for the partners in the other end of the pipeline pump, pull line cannot too much, avoid multiple thread around the ground tangles.(Beijing deep vanke, weak current experts around you!)
  Gigabit Ethernet cable, gigabit Ethernet cable connection
  Note 4
  Set aside on both ends of the wire end of the process, the redundancy of cable to organize and protect, disk line should follow the original direction of rotation, the coil diameter is not too small, if possible with waste thread on the bridge, the condole top or cartons, completes the annotation, remind don't move don't step on other people.
  Gigabit Ethernet cable, gigabit Ethernet cable connection
  Note 5
  Settles in finishing, binding, cables, redundancy cable don't be too long, don't let the superposition of cable force, conveniently consolidation coil, fixed rope don't le too tight.
  Gigabit Ethernet cable, gigabit Ethernet cable connection
  Matters needing attention of six
  During the whole construction process in a timely manner, each type of work, communicate, head of found the problem immediately notify party a in time before the other subsequent work for this type of work tasks.
  The attached:
  MB Internet practice: orange white orange, green, white, blue, blue white green white palm (ordinary computer connected to the router, it is usually said cable)
  The gigabit Ethernet cable approach: green and white, green, orange white white palm orange blue blue and white
  LAN is a single computer or terminal, the use of communication lines connected to each other, follow certain agreement, exchange of information and realize resources sharing.Among them, communication lines, the transmission medium commonly used are: twisted pair, coaxial cable, optical fiber, etc.Starting from the performance and maintainability, most of the local area network (LAN) is usedUnshielded twisted pair(UTP - Unshielded Twisted Pair) as the transmission medium to network cabling.
  Cable is composed of a certain distance long twisted-pair cable and RJ45 head.Twisted-pair cable by eight different colors of thread into 4 pairs twisted together, twisting into a team role is as far as possible to reduce the influence of electromagnetic radiation and external electromagnetic interference, twisted pair according to whether the plus metal mesh set shield and divided intoShielded twisted-pair cable(STP) and unshielded twisted pair (UTP).In the EIA/TIA - 568 - a standard, differentiate twisted-pair cable according to the electrical characteristics are: three, four, five line.Network is the most commonly used in three kinds of line and line of the five categories, there are more than six class line.The third kind is often used in twisted-pair LAN as a 10 MBPS Ethernet data and voice transmission, accord with the standard of 10 base-t IEEE802.3.Fifth class twisted-pair owns the largest LAN market at present, the highest rate of up to 100 MBPS, 100 base-t IEEE802.3 standard.The best cable RJ45 crystal head to access network card or RJ45 socket of the HUB and other network devices.Accordingly, RJ45 socket is divided into three or five types of electrical characteristics.RJ45 crystal head made up of metal and plastic, need special attention is that pin number, from left to right when metal face our pin number is 1-8, the serial number it is very important to network online, can't make a mistake.Twisted pair of maximum transmission distance is 100 meters.
  EIA/TIA wiring standards specified in the two kinds of twisted pair line 568 a and 568 b.
  White - 1 standard 568 a: orange, orange - 2, green and white - 3, blue - 4-5 of white and blue, and green - 6, brown and white - 7, brown - 8;
  Standard 568 b: green and white - 1, and the green - 2, orange and white - 3, blue - 4-5 of white and blue, orange - 6, brown and white - 7, brown - 8.
  Throughout the network cabling used A wiring way, but both sides have the RJ - 45 plug-in network on-line adoption of A termination, or termination mode B, is common in the network.The order of twisted-pair cable and RJ45 head pin number corresponding.10 m Ethernet cable transfer data using 5 number of conductor, 100 m Ethernet cable transfer data using 4,5,7,8 number of conductor.Why are now adopting 4 twisted pair of (8 core)?This is mainly in order to adapt to the use of the more, the under the premise of not changing infrastructure, can satisfy all kinds of user equipment wiring requirements.For example, we can use at the same time with a pair of wire to achieve voice communication.Rj45 crystal head, rj45 head, crystal head, network connection, rj45, wiring connector
  100 base - T4 RJ - 45 provisions to twisted-pair are as follows: rj45 crystal head, rj45 head, crystal head, network connection, rj45, wiring
  1, 2, used to send, 3, 6, used to receive, 4, 5, 7, 8 is bi-directional line.
  1, 2, line must be twisted, 3, 6 twisted-pair, 4, 5, twisted, 7, 8 twisted-pair.
  Here are several applied the method of making the environment twisted-pair cable.
  MDI said this level is even mouth mouth, mouth and MDI - X said this is common.
  1) the network devices connected to the HUB such as PC, using the Internet for straight line, the two ends of the twisted-pair wires to one to one correspondence, at this point, the HUB of MDI - X, PC for MDI.10 MBPS Ethernet cable as long as one to one correspondence can be on both ends of the twisted pair, don't need to consider different color line sorting, and if you use 100 m rate is linked together, must be in strict accordance with the EIA/TIA 568 a or 568 b wiring standard production.
  2) in the HUB between level even, should put even mouth control switch in MDI (Uplink), at the same time they are connected by straight line.If there is no special grade even mouth the HUB, or can't use the mouth, must use the MDI - X level even mouth, at this time, we can cross the line to achieve the purpose, the intersection line, cable, is doing with RJ - 45 plug-in at one end of 1 foot from the other end RJ - 45 plug-in 3 feet;One end with RJ - 45 plug-in 2 feet from the other end of the RJ 45 plug-in - 6 feet.According to the following chromatography:
  A side: orange, white, orange, green and white, blue, blue and white, green, brown, white, brown,
  Side B: green and white, green, orange, white, blue, blue, white, orange, brown, white and brown.
  Level at the same time, we should also know that even the HUB between the cable length should be not more than 100 meters, the HUB of the class should not be more than 4.Because the intersection line is less used should be special markers, in order to avoid mistake for straight line in the future, cause line fault.Another crossover cables can also be used in two microcomputer directly connected.Finally to on and off line tests, RJ - 45 line meter test, four green light should be blinking in turn.Software debugging is the most commonly used method, is to use the Ping command Windows95, Windows 98.If the workstation to get the server's response suggests that circuit is normal and network protocols installed normal, and this is the foundation of the network application software to work.
  Gigabit Ethernet cable production methods
  Gigabit class 5 or super 5 twisted-pair correlates with cable, in the form of form is the same, also can be divided into direct and cross two kinds.Straight line and the little difference, we usually use are one-to-one correspondence.But traditional MB network cable to transmit only to 4 root, and gigabit network need eight to transmit, so gigabit crossover cable production correlates with different, producing method is as follows: 1 to 3, 2 to 6, 3 to 1, 4 to 7, 5 to 8, 6 to 2, 7, 8 to 5 to 4
  Such as:
  One end is: half orange, orange, and green, blue, half blue, green, half brown, brown;
  On the other side: half green, green, orange, and brown, brown, orange, blue, and a half
  The practice of gigabit Ethernet cable
  Gigabit class 5 or super 5 twisted-pair correlates with cable, in the form of form is the same, also can be divided into direct and cross two kinds.Straight line and the little difference, we usually use are one-to-one correspondence.But traditional MB network cable to transmit only to 4 root, and gigabit network need eight to transmit, so gigabit crossover cable production correlates with different, producing method is as follows: 1 to 3, 2 to 6, 3 to 1, 4 to 7, 5 to 8, 6 to 2, 7, 8 to 5 to 4
  Such as:
  One end is: half orange, orange, and green, blue, half blue, green, half brown, brown;
  At the other end: half green, green, orange, and brown, brown, orange, blue, half orchid gigabit 5 classes or super five types of twisted-pair correlates with cable, in the form of form is the same, also can be divided into direct and cross two kinds.Straight line and the little difference, we usually use are one-to-one correspondence.But traditional MB network cable to transmit only to 4 root, and gigabit network need eight to transmit, so gigabit crossover cable production correlates with different, producing method is as follows: 1 to 3, 2 to 6, 3 to 1, 4 to 7, 5 to 8, 6 to 2, 7, 8 to 5 to 4
  Such as:
  One end is: half orange, orange, and green, blue, half blue, green, half brown, brown;
  At the other end: half green, green, orange, and brown, brown, orange, blue, half orchid gigabit 5 classes or super five types of twisted-pair correlates with cable, in the form of form is the same, also can be divided into direct and cross two kinds.Straight line and the little difference, we usually use are one-to-one correspondence.But traditional MB network cable to transmit only to 4 root, and gigabit network need eight to transmit, so gigabit crossover cable production correlates with different, producing method is as follows: 1 to 3, 2 to 6, 3 to 1, 4 to 7, 5 to 8, 6 to 2, 7, 8 to 5 to 4
  Such as:
  One end is: half orange, orange, and green, blue, half blue, green, half brown, brown;
  On the other side: half green, green, orange, and brown, brown, orange, blue, and a half


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