What is the secret to sorting the crystal heads of network cables?

The formula for sorting the network cable crystal heads is: 1. 568A, from left to right, the order is white-green, green, white-orange, blue, white-blue, orange, white-brown, brown; 2. 568B, from The order from left to right is white-orange, orange, white-green, blue, white-blue, green, white-brown, brown.

#The operating environment of this article: Windows 7 system, Dell G3 computer.

Network cables, generally made of metal or glass, can be used to transmit information within the network. There are three types of commonly used network cables: twisted pair, coaxial cable, and fiber optic cable (fiber optic). Twisted pair is a data transmission line composed of many pairs of wires. It is characterized by its low price, so it is widely used.

Network cable crystal head (English: Registered jack, RJ) is a standardized telecommunications network interface that provides an interface for voice and data transmission.

There are two ways to connect the network cable crystal head, one is the direct interconnection method, and the other is the cross interconnection method. The method of crossing the cable is: one end adopts the 568A standard and the other end adopts the 568B standard. The method for parallel (straight-through) lines is: both ends are of the 568A standard or the 568B standard.

The formula for sorting the crystal heads of network cables is:

1, 568A

You need to peel off the network cable first, and then the order from left to right is: 1, white and green 2, green 3, white and orange 4, blue 5, white and blue 6, orange 7, white and brown 8, brown.

2, 568B

You need to peel off the network cable first, and then the order from left to right is: 1, white and orange 2, orange 3, white and green 4, Blue 5, White Blue 6, Green 7, White Brown 8, Brown.

Example:

A. If you want to make a network cable between a computer and a hub, you must choose a straight-through cable with 568A at both ends or 568B at both ends.

B. If you want to make a network cable for a router and a hub, you need a straight-through cable, with both ends being 568A or 568B network cables.

C. If you want to make a network cable between PC and PC, you need to choose a crossover cable. One end is 568A and the other end is 568B network cable.

How to connect and sort the network cable crystal head:

1. How to connect the network cable? First of all, you must prepare materials and tools, and then find a network cable of appropriate length, crystal head, crimping pliers and tester according to your own needs.

2. Use crimping pliers to remove some of the shells at both ends of the network cable, and then straighten the cores together in the order of 568A or 568B.

3. Arrange the core wires of 8 colors, and then place them at the notch of the crimping pliers. Pay attention to the 8 wires to be on the same plane and straighten them. Then expose part of the core wires and cut them with crimping pliers. together.

4. Insert the network cable into the RJ45 crystal head. When inserting, insert it evenly to the end. Check whether all 8 wire cores have entered, and try to line up the ones inside the crystal head.

5. Then open the network cable of the crimping pliers and press the crimping pliers hard, and then pull it out.

6. After this end of the network cable is ready, use the same method to make the other end. After both ends are good, insert both ends of the network cable into the tester for testing. If the indicator light is on, it is normal, otherwise , you need to recreate it.

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