How to make the Wire crystal head?

Tools for making crystal head of wire

Wire pliers (for connecting crystal Heads)

In fact, the tool is very simple, on one, the production is also very simple mainly to pay attention to the Crystal Head model, now the most commonly used standard is: Tia/eai 568B, there is a tia/eai 568A their wiring slightly different, making crystal head first will be crystal head with a card down side, there are copper side facing up, The one with the openings facing its own body, sorted from left to right 12345678 as follows:

Tia/eia-568b:1, White Orange, 2, orange, 3, White green, 4, blue, 5, white blue, 6, green, 7, White Brown, 8, brown

Tia/eia-568a:1, White green, 2, green, 3, white orange, 4, blue, 5, white blue, 6, Orange, 7, White Brown, 8, brown

Schematic diagram of wire crystal head step

In the whole network wiring to apply a wiring method, but both ends have RJ-45 plug network line whether using the end of the way a, or termination mode B, in the network are universal. The order of twisted pair and the pin number of the RJ45 head-corresponds.

10M Ethernet network cable Connection using 1,2,3,6 number of core wire transfer data, 100M Ethernet network cable using 4,5,7,8 numbered core wire transfer data. Why are there 4 pairs (8 cores) twisted pair? This is mainly to adapt to more use of the scope, without the transformation of infrastructure, under the premise of a wide range of user equipment to meet the wire wiring requirements. For example, we can use a pair of stranded wires to achieve voice communication.

100BASE-T4 RJ-45 for twisted-pair cable Connection method is as follows:

1, 2 for sending, 3, 6 for reception, 4, 5, 7, 8 are two-way lines.

1, 2 line must be twisted, 3, 6 twisted, 4, 5 twisted, 7, 8 twisted pair.

According to the two ends of the crystal head to do the same thing, there are tow wire access method.

Straight line:

The two ends of the line Crystal Head approach the same, are tia/eia-568b standards, or are TIA/EIA-568A standards.

Used for: PC network card to hub common mouth, hub common port to the hub cascade. The general use of straight line can be completed.

Cross line:

Network cable ends Crystal Head practice is not the same, one end tia/eia-568b standard, one end tia/eia-568a standard.

Used for: PC network card to PC network card, hub ordinary mouth to hub ordinary mouth.

Cross line:

How to determine the use of straight or crossed lines:

Same device port: Cross line, different device port: Straight line.

The maximum transmission distance of twisted pair cable is 100m. If you want to increase the transmission distance, the two-strand cable can be installed between the repeater, up to 4 repeaters can be installed. If 4 repeaters are installed to connect 5 network segments, the maximum transmission distance is up to 500m.

The setting of two computers connected directly via a network cable (i.e. Peer-to-peer network)

As mentioned above, two computers are connected to each other through a network cable. RJ45-type network cable Plug and wire connection is: one end according to the t568a line sequence, at one end by t568b line sequence, and then the network cable through the RJ45 plug to connect the computer network cable socket, which completes the physical connection between the two computers. However, the two computers may not immediately be able to carry out data transfer, but also must be related to the settings:

1. Specify the IP address of each computer: You can choose between 192.168.0.1 ——— 192.168.0.254 any value as the IP address of the two computers, pay attention to IP address do not re-use.

2. Set the subnet mask for each computer is: 255.255.255.0

3. Set the gateway for each computer: for example, if the IP address of the first computer is 192.168.0.1 and the IP address of the second computer is 192.168.0.2, the gateway of the first computer and the second computer should be 192.168.0.1 or both 192.168.0.2, or gateways take 192.168.0.1 ——— 192.168.0.254 any value between the two machines, such as the gateway to 192.168.0.100.

4. Set the hard disk you want to access your computer for sharing: The same method of setting up the share is the same as the operation on the local area network.

After completing the 1-4 settings above, you can see the computers connected to each other in your computer's "Network Neighborhood," and then you can use copy-paste to transfer data to each other like a LAN. In fact, the wire connection is so simple, you can also learn how to make network cable, become the Internet reach people.

The following is a brief introduction to the fabrication methods of twisted-pair wires in several application environments.

MDI indicates that this port is a cascade port, while mdi-x indicates that this port is a normal port.

1 PC and other network equipment connected to the hub, the cable used for straight line, twisted pair of wires to each of the corresponding, at this time, hub for mdi-x mouth, PC for MDI Port. 10Mbps network cable as long as the twisted pair at both ends of the line can be, do not have to consider the order of different colors, and if the use of 100M rate connected, you must strictly follow the Eia/tia 568A or 568B wiring standards.

2 during the hub Cascade, the Cascade control switch should be placed on the MDI (uplink) and connected with a straight line. If the hub does not have a dedicated grade port, or can not use the cascade, you must use the Mdi-x mouth level, at which point, we can be used to achieve the purpose of the crossover line, where the intersection line, that is, when doing network cable, with one end RJ-45 plug 1 feet to the other end of the RJ-45 plug 3 feet; and then one end RJ-45 Plug's 2 feet receive 6 feet from the other end of RJ-45 plug. Can be produced according to the following chromatography:

A-side: orange white, orange, green, white, blue, blue, white, green, brown white, brown;

B-end: Green, white, green, orange, blue, blue, white, orange, brown, Brown.

At the same time, we should also know that the level of the network cable between the length should not exceed 100 meters, the hub of the level should not exceed 4 levels. Because the intersection line is less used, it should be made special mark, so as to avoid future mistake for direct line, resulting in line failure. In addition, the crossover cable can also be used in two micro-computer direct connection.

At last, the circuit must be tested with RJ-45, 4 green lights should be flashing in turn. The most common way to debug software is to use the ping command with Windows95 and Windows 98. If the workstation gets a response from the server, the line is normal and the network protocol is properly installed, and this is the basis for the network application software to work properly.

Here is a simple introduction to the twisted pair when the line should be used in the following order: (tia/eia568b for example)

Line order of twisted pair