How to make a crystal head 5, how to make a crystal head

First of all, you need to have crimping pliers to do it, and then buy a network cable and crystal head, and do it in line order. There are two main types of connectors:

586a refers to the first line order: orange white orange green-white blue-blue blue-white green-brown white-brown.

The other end is: green-white, green-orange-white, blue-white, blue-white, orange, brown-white, brown (orange and green swap positions).

586b means that the line order of the two ends is the same, all are: orange, white, orange, green, white, blue, blue, white, green, brown, brown, brown.

Generally, 568b is the kind of network cable we usually use, which can allow the computer to access the Internet normally. It is also called a positive line.

586a is used for, between two computers do not pass through a third party, directly use a network cable to connect and communicate, it is necessary to be 586a is, which is also what we usually call the reverse line.

Hope it solves your problem.

There are two ways to use network cables, one is a crossed line, and the other is a parallel (straight-through) line.

The practice of crossing the line is: 568A standard at one end and 568B standard at the other end.

The practice of parallel (straight) lines is: both ends are 568A standard or 568B standard, (generally used is the practice of 568B parallel (through) line).

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, brown.

The difference between the two approaches is that orange and green are swapped.

The crystal head has a special clamp.

Tools needed: Mesh cable, scissors, hammer, stainless steel ruler.

1. Cut off the outer wrapping skin at one end of the network, revealing the copper wire inside, with a total of 8 pieces and 8 colors.

2. Arrange them in order, namely: orange-white, orange, green-white, blue, blue-white, green, brown-white, brown-white, brown, this is the industry standard sorting, and it cannot be quietly messed up.

3. Use scissors to cut the thread heads, and then insert them into the crystal head of the water stupid slag, remember to push it to the end, so that the later production can be successful.

4. Press the metal head, use a ruler to snap into the crystal head buckle, and then put it flat on the ground.

5. Use a screwdriver and hammer to press each metal groove of the crystal head (use the hammer to gently tap the screwdriver).

If the screwdriver is too long and difficult to operate, you can use a shorter metal rod instead.

6. To make it simpler, you can also directly use a hammer to directly smash the crystal head, but be careful not to smash the crystal head with a lead cavity.

7. Finally, it's done, plug it in the computer and try to connect to the Internet normally, and you're done.

<>1. Find the computer network cable interface, align the computer network cable with the interface and gently press it to connect the network cable to the computer.

2. Find the network on the computer, right-click the properties, and open the network management center.

3. Click Set up a new connection or network.

Before pressing the crystal head, we need to prepare the following tools: RJ45 crystal head, crimping pliers, twisted pair cable, line tester. Registered Jack was developed by Bell Systems to connect a user's device to a public network.

There are two scenarios for connecting:

T-568A standard: white-green-green-white-orange-blue-white-blue-orange-white-brown-brown.

T-568B standard: white, orange, orange, white, green, blue, blue, blue, green, white, brown, brown.

Generally, the computer-router connection is T-568B (mostly) or T-568A at both ends, that is, it is directly connected, while the computer-computer, switch-switch and other connections use the cross-interconnection of T-568A at one end and T-568B at the other end.

When buying a crystal head, don't choose a crystal head that is too cheap, because such a crystal head is often not used enough materials or the size of the crystal head is different, for example, the copper contact of the crystal head is replaced with aluminum or iron and then poured copper on the surface, such a crystal head can not be used, because it is easy to oxidize, easy to break and fall off.

In addition, because the size may not be standard, the crimping pliers cannot locate the contacts when making the network cable, so that the crimped crystal head cannot be used at all, and it will also cause the plugging network interface to be not firm, resulting in network failure. It should also be noted that it is necessary to buy a crimping pliers with excellent quality, and you must not buy too cheap products, as the crystal head made of such products cannot be used.

Peel off the network cable and arrange the wire according to the standard, and clamp it with a wire clipper. The following are the cabling standards:

Standard 568a: green-white-1, green-2, orange-white-3, blue-4, blue-white-5, orange-6, brown-white-7, brown-8;

Standard 568B: Orange-White-1, Orange-2, Green-White-3, Blue-4, Blue-White-5, Green-6, Brown-White-7, Brown-8.

The general production method of network cable is:

1. Parallel lines. There are two types of parallel lines:

1. Standard 568A is used on both sides for crystal heads, 2. Standard 568B is used for crystal heads on both sides (many people use this kind of standard, and they think that the standard has better shielding for electromagnetic interference.) ）

Second, the crossing line. One end is made into standard 568a, and the other end is made into standard 568b.

Third, the full anti-line. The line sequence is generally 568b at one end, and the color at the other end is all reversed, which is mainly connected to the computer and the switch, and the console port of the router. This connection allows the computer user to log in to the router or switch and enter commands.

Direct connection, non-remote access).

Usage: Use cross lines for the same device interconnection, and parallel lines for different device interconnection.

For example, a computer is connected to a computer, a router is connected to a router, and a hub is connected to a hub, because the interconnected devices are the same, so use crossover wires.

Such as: computer to router, router to hub, router to switch, etc. Since the devices are different, parallel lines are used.

Switches and switches: There are three types of switches: the ordinary port of the switch is connected to the uplink port of another switch using a direct cable; The common port of the switch is connected to the common port of another switch and uses a crossover wire; Crossover wires are also used to connect the uplink ports of the switch.

Today's switches are generally equipped with uplink ports, so the use of parallel wires can reduce errors caused by different connection methods.

Therefore: because the computer and the switch do not belong to the same kind of equipment, the computer connector and the switch connector are both 568B direct connection method. The same goes for the straight-through couplings.

In addition, there is no wire pliers and the network cable cannot be fixed, and the crystal head cannot bite the network cable tightly, it will be loose, and it is easy to detach the network cable and the crystal head. Excuse me, what is a crystal head? It can be done with a pair of slotted and a pair of pliers.

The practice of RJ45 crystal head (that is, the connector of the 8-core network cable).

1。Dial the outer skin of the network cable: cut the network cable 3-4 cm away from the outer leather knife ring of the crystal head pliers, do not cut through, and then twist it to dial it off Don't hurt the line.

2。Line sequence: Straighten the 8 cores and sort them by the following colors:

1 orange-white, 2 orange, 3 green-white, 4 blue, 5 blue-white, 6 green, 7 brown-white, 8 brown. Neatly lined up. Keep the length of centimeters and cut the liquid with a cutter and cut the liquid.

3。Place the crystal head flat side up. Insert the neatly arranged threads into the crystal head, and look at the top of the crystal head below so that you can see all 8 threads to the end. Then put the crystal head into the pliers and press it firmly. The other end does the same.

PS: The lines that come out of this way are parallel. Ideal for PC-to-router or hub connections.

The other type of wire is the crossed line, which is used as a direct connection from the computer to the computer. The practice is the same as above, but the line order at one end becomes: 1 green-white, 2 green, 3 orange-white, 4 blue, 5 blue-white, 6 orange, 7 brown-white, 8 brown.