samedi 13 décembre 2014

Guide To DIN Rail Fiber Optic Patch Panel

By Lucia Weeks


A patchbay is, in many areas of wired data transmission (eg audio, telephone and video technology or computer networks) a technical device to simplify wiring, where usually several devices are connected, their compounds comfortable using short patch cable may be prepared and changed with attached to front bushings (DIN Rail Fiber Optic Patch Panel).

The main purpose of wiring is disconnected to allow the realization of different connections between the signals in a simple and cheap, avoiding the use of more complex tools switching. An early form of patchbay is with the manual telephone exchanges, in which the connections were made manually. With time, this use has been abandoned in favor ofutomatic switching systems.

The use of patchbay is rather large in entertainment industry and more particularly in television, and is also widely used in computer networks. Disconnection video signals of mobile direction. Note on left a series of panels not normalized with fittings inserted and, in blue, a rope. Each type wiring is suitable in principle to use of patchbay. Depending on type signal, changes the type cable that carries it and the type connector used. Common examples of patchbay are: Video signals over coaxial cable 75. There are different specifications depending on type video.

In common practice, in any case, the patchbay and matrix coexist, generally by cutting all the inputs and outputs of matrix. This allows to realize simple by-pass in case of emergency. There is also the advantage of not having to put in array signals used rarely, if necessary, that are still available on the patchbay.

This is useful, for example when the microphone input of a mixer, where, according to microphone often a preamplifier (integrated in mixer or external), an equalizer and a compressor in a row are connected. Each trail with each other via a socket pair distribution box is completed, the output of previous device is usually above, the input of next down.

The modular structure allows to compose patchbay capable of routing connections of different types of signals on same panel, saving space if the number of signals is limited. Typically, in a panel on top rack unit can accommodate 24/26 modules. You can make a panel with, for example, video connections 8, 10 and 6 serial audio.

Jacks are connected as in normalized variant unpatched state. However, it is only separated in a bush shows the default signal when plugged in, the second drags the signal is always through. In general, the input is interpreted divisive, to allow the (exclusive) feeding another source, while the output jack, the signal both branched into patch cord, towards the entrance; However, this passive division may be associated with the level and quality loss.

Depending on use, there are three types of disconnectors, whose normalization of signals may be absent or complete, or it may be disconnectors. The normalization indicates the way in which the elements of single module are wired internally. In a form without normalization, a rope is required for the transit of signal (or a dedicated short cable to U), while in a normalized form the input signal to patch panel is always connected to corresponding output.




About the Author: