Production method of signal wires commonly used in stage lighting and audio equipment


The production method of signal wires commonly used in stage lighting and audio equipment A set of usable stage lighting and audio equipment, whether it is a professional system or a non-professional civil lighting and audio equipment, in addition to the equipment itself, requires various connecting wires to connect the equipment before it can be used. A complete wire is composed of a plug and a wire. The following is a brief introduction to the production of commonly used plugs, wires and connecting wires.

Signal plugs commonly used in stage lamps: A. Three-pin XLR plug (XLR): XLR plugs are divided into XLR male (XLR Male) and XLR female (XLR Female). It is very simple to distinguish the male and female of the XLR head, the one with the "needle" is the "male head", and the one with the "hole" is the "female head". The input and output ports of many audio equipment are XLR ports, and the ports with "needles" are "male ports", and the ports with "holes" are "female ports" as shown in the figure below.

The three solder joints of the XLR head are: "1" shielding; "2" signal "-" end (cold end); "3" signal "+" end (hot end) as shown in the figure below for male and female soldering Be sure to "shield" 1 to 1; 2 to 2; 3 to 3 welding, pay attention to 1, 2, 3 can not be short circuit or virtual welding when welding. B. RJ-45 crystal head (network cable): Stage lamps should respond to the vigorous development of domestic public entertainment and cultural performances, especially the rapid development of the KTV industry. Before the method of using XLR head welding to make signal lines has become a difficult task for on-site construction. Later, the method of using the crystal head to do the signal connection of the stage lighting appeared. It should be noted that the RJ-45 crystal head (network cable) connection is not a real network protocol, but the DMX512 protocol. The RJ45 network cable plug, also known as the crystal head, is made of eight cores and is widely used in LAN and ADSL broadband Internet users. The connection of network cables (called Category 5 or twisted pair) between network devices.

In specific applications, there are two connection methods (line sequence) for RJ45 plugs and network cables, which are called T568A line sequence and T568B line sequence (below). The stage lighting uses the T586B connection method, that is, one-to-one correspondence.

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