Rj 45 cable: how to crimp a twisted pair cable, internet connection methods

To organize a local network, wired segments are used. They are different cables with so-called connectors at the ends. For small office or home wired networks, use an rj 45 cable. You can squeeze it at home, you just need to have an idea of ​​some of the intricacies of this procedure.

Crimp diagrams rj 45

LAN elements are connected to each other using network cables called "twisted pair" with connectors at the ends of rg45. The main distinguishing feature of twisted pairs is tight outer insulation in the form of a polychloride film, which reduces the risk of mechanical damage to the cable. Also available are cables of this type with a foil shield, which reduces the effect of foreign electromagnetic fields on the signal passing through the conductors.

Twisted pair pinout technology

Rj45 pinout for ethernet requires certain knowledge and skills. It is important to remember that the very sequence of actions when crimping twisted pairs remains unchanged, and only the colors of the connected cable wires alternate.

Sequencing:

1. First, the outer insulating layer of the cable is cut off. For the convenience of divorcing the conductors, the cut is made at a distance of 50 mm from the edge of the cable.
2. The twists of all cable pairs are unwound and arranged so that there is no intersection of them.
3. Multi-colored veins are lined up in the desired color range and cut strictly at an angle of 90 degrees at a distance of 3 cm from the base of the common cable.
4. The cores are inserted into the body of the rj45 plug. In this case, the plastic connector itself must be held in such a way that the clamping clip is located at the bottom. Each vein must enter the corresponding channel of the rj45 connector in the desired color sequence. This is important, since an incorrect wiring sequence during crimping will lead to inoperability of the network section with such a cable.
5. With a little effort, the cable should be pressed against the connector to make sure that the ends of the wires are tightly pressed against the edge of the rg plug.
6. All inserted veins are crimped with a special device or with a small screwdriver for each vein in turn.

The result of this work will be a reliable fastening of the twisted pair wires in the rj45 plug. You can check the quality of the fastening of the wires in the connector by pulling in opposite directions with the force of the cable itself and the fixed plug.

Pinout and installation of the socket

To pin out the rj45 socket, you will need the same tools as for crimping the plug. The main thing is to observe the correct connection of the conductive cores in color. Scheme of actions:

1. The outer winding of the twisted pair is removed at a distance of 10 cm from the edge for ease of operation.
2. The twists are unwound and arranged in one row in the desired color sequence. It is also worth ensuring that from the edge of the cut to the ends of the wires, they do not intersect with each other.
3. Depending on the connection scheme (computer to computer or computer to switch, etc.) ), cross or standard pinout is performed. The rj45 sockets are marked accordingly.
4. Attaching the base of the braid to the board, insert the wires into the far connectors. The distance from the braid to the connector should not be more than 30 mm.
5. The inserted cores are crimped either with a special tool or with small scissors with such an effort that a characteristic click is heard.

When mounting the outlet on the wall, it is important to follow the rule that the outlet sockets should point downward. There are several reasons for this location:

• firstly, it protects from the ingress of dust or moisture from above;
• secondly, with a quick and inaccurate connection to the outlet from the bottom position, there is less chance of disrupting the outlet;
• and, thirdly, from the point of view of aesthetics, this type of installation is not very striking and less spoils the interior of the room.

Correct ethernet pinout and successful installation of the socket will allow you to create a reliable connection in the local network for a long time.

Internet connection in a standard way

When connecting a computer's network card to the Internet, the functioning of twisted pairs is used to receive and transmit information. In this case, the rj45 is pinned by colors for the Internet. Two pairs of cores are used, connected to the hub and the computer according to the principle of a symmetrical transformer circuit. This pinout allows you to avoid mistakes when installing or wiring the twisted pair and provides good suppression of interference and pickup.

And if there is a need for an additional line or the pairs used are damaged, then without loss of signal quality it is possible to double the number of lines or to repress the connector from damaged pairs to whole ones wires.

Pinout of the 8-wire internet cable is not too difficult. All that is needed is attentiveness and accuracy. To shorten the time it is worth using special tools for installing a local network and a tester to verify that the twisted pair connectors are crimped correctly.