The crystal connector has 8 holes, and the network cable has 8 wires, and it is not a wire inserted

Right: X in a certain order.

Now the 568b standard is generally used to make the crystal head, see the core chromatography in the figure above.

The connection order of the eight-core network cable is orange, blue, green and brown, and the position of blue and white and green and white can be reversed.

In the same way, it has a color label next to the terminal hole, and it is connected according to that color.

The wiring methods are both A and B;

When connecting to the socket, you can refer to the color of the sticker on the side of the socket; There are two kinds of line sequences for network cables: crossed and parallel, and you can find the specific line sequence on the Internet; Now they are all adaptive network cards, as long as the network cable of the socket is connected, the network cable can be used in any connection method;

The standard network cable is 8 cores, but the general use is to use 4 cores inside. In order to reduce costs, some network cables now only make 4 cores, which is the same in our ordinary use.

If Chadan is on some special occasions, the 4-core network cable will not work. For example, the gigabit network cable must be an 8-core Qiheng, and when the passive AP is powered by PoE, it must also be an 8-core network cable.

How to distinguish mainly looks at two aspects:

The eight-core network cable has 4 pairs of twisted pair cores inside.

The four-core network cable only has 2 pairs of twisted pair cores inside.

The specifications of eight-core network cables are divided into indoor and outdoor network cables, <> four-core network cables generally only have one specification of outdoor wire skin.

There are two ways to connect the network cable crystal header, one is the direct connection interconnection method, and the other is the cross interconnection method. The practice of crossing the line is: 568A standard at one end and 568B standard at the other end.

The practice of parallel (straight-through) lines is to use both ends of the 568A or 568B standard.

Since the cross line and the straight line are only different in line sequence, now the 568b standard is used as an example for the through line, and the connection method is as follows:

2. Arrange them in this order: orange-white, orange, green-white, blue, blue-white, green, brown-white, brown-white. Then cut it with a network cable pliers.

3. Insert the neat 8 strands of wire into the crystal head with one end of the plastic spring sheet downward and the one end with metal pins upward, and make it tightly top at the top.

4. Insert the crystal head into the 8p slot, and hold the crimping pliers firmly, and the other end is the same.

5. Take the network cable tester again and test the smoothness of eight lines, so that one network cable is done.

Summary. 8 network cables are connected to 4 cores, as long as the corresponding cable is connected. In terms of color, these four are generally connected: orange and white, and orange are used for sending; Green and white and green are used for receiving; The other colors are two-way lines.

How to connect the 8-core network cable to the 4-core crystal head I can't connect ...... like thisHurry, Hurry, Hurry!!

8 network cables are connected to 4 cores, as long as the corresponding cable is connected, there is no shortage. In terms of color, it is generally connected to four sticks: orange and white, orange and two for sending; Green and white and green are used for receiving; The disadvantage of other colors is that it is a two-way line.

According to the standard national standard connection method T568B, it is orange-white, orange, green-white, and green 4 cores.

There are 8 network cables and 4 crystal heads, so how to sort those 4 colors.

According to the international standard connection: 1, orange white 2, orange 3, green white 4, blue 5, blue and white 6, green 7, brown white 8 brown.

The crystal head is 4 cores.

4 core wire practice:

The practice of 8 core wires:

Sorting method: 568a standard: white green, green, white Duan Yanling Xiang's orange, grasp Qi blue, white blue, orange, white brown, brown 568b standard: white orange, orange, white green, blue, white blue, green, white brown, brown.

There are 8 network cables, 4 crystal heads, as long as the line is pressed in the order of 1236, it can be a year of trouble. At present, the network cable only uses 4 for data transmission, and the remaining 4 are idle code wheels are used to send data and are used to receive data, as long as 1-2, the color of the cover 3-6 lines is the same to ensure smooth network communication.

You only need to mark the 4 network cables clearly, and dock the 8-core network cable to make filial piety stove 1 orange white, 2 orange Shenchang, 3 green and white liquor, 6 green; The order of the twisted pair corresponds to the pin sequence number of the RJ45 head.

8 network cable pins sell four-core network cable connection: there are 8 slots in the crystal head, and the numbers for it are 1 2 3 4 5 6 7 8, and the orange and white of the four-core network start line correspond to the No. 1 slot, the orange corresponds to the No. 2 slot, the green and white correspond to the No. 3 slot, and the green corresponds to the No. 6 slot. That is, it is inserted into 1236 in the order of orange-white, orange, green-white, and green.

The correct wiring method of Crystal Head He Chen is as follows: 1. Prepare the required network cable, and cut the length that needs to be dismantled vertically. 2. Use crimping pliers to peel off the wire skin at both ends of the network cable, and the stripping length is about 3 cm.

3. Organize the inner line, in the order of white orange, orange, white green, blue, white blue, green, white brown, and brown. 4. Use crimping pliers to cut the inner thread end of the remaining jujube flat. 5. Stuff the flattened inner thread into the crystal head, and pay attention to the line sequence when plugging.

6. Press the metal contacts on the crystal head with crimping pliers, and press them firmly.

It's the same at both ends.

Connected to the 568b standard: orange-white, orange, green-white, blue, blue-white, green, brown-white, and brown are all 1236

The practice of twisted pair crystal heads:

1. It is used for computers and hubs (or switches) in the network

One end is the same as the other: orange-white, orange, green-white, blue-white, blue-white, green, brown, white, brown.

2. Used for computers and computers (or switches and switches).

The other end: green-white, green, orange-white, blue-white, blue-white, orange, brown-white, brown-white.

As always, it has a color label next to the wiring hole, which can be connected according to the color.

RS-485 uses A, B, and 2 wires to transmit differential signals, A interface Data+, B interface Data-.

RS-485 is also known as TIA-485-A, ANSI TIA EIA-485, or TIA EIA-485. RS485 is the standard used to define the electrical characteristics of drivers and receivers in balanced digital multipoint systems, as defined by the Telecommunications Industry Association and the Electronics Industry Association.

The connection mode is A and B:

When connecting the socket, refer to the color of the sticker on the side of the socket. There are two types of network lines: cross lines and parallel lines, and you can find the specific line sequence on the Internet; Now the network cards are all adaptive, as long as there is a cable socket, you can connect to the cable;