The practice of parallel (straight-through) lines is that both ends are 568A standard or 568B standard. The method of crossing the line is: one end adopts 568A standard, and the other end adopts 568B standard. 568A standard: white green, green, white orange, blue, white blue, orange, white brown, brown; 568B standard: white orange, orange, white green, blue, white blue, green, white brown and brown.
Specific connection of extended data crystal head:
1. Stripping: Stripping the outer insulation of the network cable to expose the colored insulation inside-be careful not to hurt the inner insulation when stripping the cable.
2. Arrangement: that is, arrange the line colors of the network cable in order. The current network cables are all "twisted pairs", that is, the tiny wires inside are twisted together in pairs, with a total of 4 groups, that is, 8 wires.
There are two options for two wiring sequences: crosshairs and straight lines. Cross line means that the two crystal heads of the same network cable are connected in different ways; A straight line means that two crystal heads of the same network cable choose the same connection. Crosswires are generally used to connect similar devices, such as computers, routers and routers. Direct lines are used to connect different types of equipment, such as computers and routers.
3. Cut: Arrange the network cables in order, hold them in your hand, and press them well-be sure to press them well. At this time, you can't tell which wire so many white cables were twisted together. Cut the thread in the wire clamp. The purpose of pruning is to trim eight network cables, so if you don't trim them all at once, you need to modify them again-pinching the network cables and pruning them again will help improve the success rate.
4. Insertion: Insert the cut network cable into the crystal head in sequence-there is no need to peel off the wire skin. When inserting the crystal head, pay attention to the back of the crystal head, that is, the side where the button is not stuck. After inserting the network cable into the crystal head, make sure that part of the external insulation of the network cable is in the crystal head. If the inner insulation skin is exposed, it is necessary to repeat the steps of thread cutting again and cut the eight small wires a little shorter.
5. Pressing: Put the crystal head into the 8P groove of the clamp and press hard. Don't forget to test the crystal head after successful pressing.
Method of detecting the crystal head: We need to use another tool-the crystal head tester. There are two testers. Insert two crystal heads of the same network cable into the tester respectively. As long as the eight lights of the tester are lit separately, it proves that the crystal head is connected well.
References:
Baidu Encyclopedia _ Network Cable Crystal Head Connection