What is the purpose of the RJ45 network interface?

RJ45 is a kind of connector of information socket (i.e. communication outlet) in the wiring system. The connector is composed of plug (connector, connector) and socket (module). RJ is short for Registered Jack, which means "Registered Jack.". RJ45 network cable plug, also known as crystal head, is made of eight cores, which is widely used in the connection of network cable (called Category 5 cable or twisted pair cable) between network equipment of LAN and ADSL broadband Internet users. 1. Design principle of RJ45: RJ45 is composed of a plug and a socket, and the connector composed of these two components is connected between the wires to realize the electrical continuity of the wires. The core of the RJ45 module is the modular Jack. The gold-plated wire or socket hole maintains a stable and reliable electrical connection with the modular socket spring. The electrical contact is further enhanced as the plug is inserted due to the friction between the shrapnel and the Jack. The body of the Jack is designed with an integral locking mechanism so that when the modular plug is inserted, maximum pull-out strength is created outside the interface of the plug and Jack. The wiring module on the RJ45 module is connected to the twisted pair through the "U" -shaped wiring groove, and the locking spring plate can fix the RJ45 module on the information outlet device such as the panel.

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II. Function of RJ45: RJ45 plug, also known as RJ45 Modular Plug, is used for termination of data cable to realize connection and change between equipment and distribution frame module. The RJ45 connector is required to have good conduction performance; the gold plating thickness of the three-prong contact reed is 50 μm, which meets the super 5 transmission standards and conforms to the T568A and T568B line sequences; it has the functions of preventing loosening, plugging and self-locking. The RJ45 plug is a standard connector in copper cabling, and together with the socket (RJ45 module), it forms a complete connector unit. A connector composed of these two elements is connected between the wires to achieve electrical continuity of the wires. It is also an integral part of the finished jumper of the integrated wiring technology. The RJ45 connector is usually connected to both ends of the twisted pair cable. In the standard design and installation of generic cabling, this accessory product is usually not listed separately, that is, it is not recommended that users complete the connection between twisted pair and RJ45 plug by themselves. Lock and other functions.

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