Monday, 22 December 2014

Overview Of 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).

In turn, in a form to complete normalization can take the signal without interrupting transit. A forcing of output signal, however, the interrupt. In case of a module seminormalizzato instead, a rope is inserted into an input output will interrupt the transit of signal. For the benefit of matrix, there is the fact that each signal can be sent to any destination without any limit to amount of times it is used, while the patchbay is inevitably limited by the availability of multiple copies of a signal, in typically from a distributor but nonetheless present in a limited number of copies.

In early days of telephony conversations were manually made by telephone operators by the interlocutors were connected via plug cable. The operators were able to connect with headsets set directly on the patchbay to terminals. The audio and video patchbays enable the flexible cabling of signal outputs and inputs, for example, the outputs of a mixer to a recording device or the insertion of effects units. Moreover, it is possible to intercept signals at various points in order to identify about sources of error.

This type patchbays is also used for digital audio interface with AES / EBU, in variant AES3id; the connector used on back of a patchbay is the BNC type, while the strings have a special coaxial connector. Analog audio signals on a balanced pair or digital AES / EBU. In this case, terminals of disconnector are usually to be welded directly; the strings are stereo jack or fittings multipolar different depending on manufacturer.

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.

Naturally it is not possible to cross between them two types of different signals. As a general rule, although it is not a fixed rule, the top line of panel receives incoming connections to patchbay (and then the outputs of machines), while the lower sends outgoing connections (and therefore to inputs machines ).

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.




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