Multiplexer Used in Multiplexing

In telecommunications and computer networks, multiplexing (also called muxing) is a technique by which multiple analog message signals or digital data streams are combined into one signal more than a shared medium. The aim is always to share a pricey resource. For example, in telecommunications, several phone calls could be carried using one wire.

The multiplexed signal is transmitted on the communication channel, which can be an actual transmission medium. The multiplexing divides the ability of the high-level communication channel into several low-level logical channels, one for every message signal or data stream to become transferred. A reverse process called demultiplexing can extract the initial channels on the receiver side. Multiplexing originated from telegraphy in the 1870s, and is also now widely used in communications.

A device that performs the multiplexing is known as multiplexer (MUX), along with a device that performs overturn process is termed a demultiplexer (DEMUX). For example, video multiplexer is a type of MUX which utilized in video multiplexing. As well as in electronics, a multiplexer (or mux) can be a device that selects one of many analog or digital input signals and forwards the chosen input right into a single line. A multiplexer of 2n inputs has n select lines, which are used to select which input line to send towards the output.

Multiplexers are mainly used to increase the amount of data that can be sent over the network within a certain quantity of time and bandwidth. A multiplexer can be known as a data selector. An electronic multiplexer enables several signals to talk about one device or resource, for example one A/D converter a treadmill communication line, instead of having one device per input signal.

CWDM OADM Module

A multiplexer is usually used in combination with a complementary demultiplexer on the receiving end. A digital multiplexer can be considered as a multiple-input, single-output switch, plus a demultiplexer as a single-input, multiple-output switch. The schematic symbol for any multiplexer is definitely an isosceles trapezoid with the longer parallel side containing the input pins and the short parallel side containing the output pin. The schematic about the right shows a 2-to-1 multiplexer around the left plus an equivalent switch on the best.

One use for multiplexers is cost benefits by connecting a multiplexer plus a demultiplexer (or demux) together on the single channel (by connecting the multiplexer single output for the demultiplexer single input). The picture off to the right demonstrates this. A Video Data Multiplexer can assist you on this work. In cases like this, the price of implementing separate channels for each and every repository is more epensive compared to the cost and inconvenience of providing the multiplexing/demultiplexing functions. On the receiving end of the data link a complementary demultiplexer is usually needed to break single data stream back to the original streams.

In some cases, the far end system might have more functionality than a simple demultiplexer therefore, while the demultiplexing still exists logically, it might never actually happen physically. This could be typical in which a multiplexer serves a number of IP network users after which feeds straight into a router which immediately reads the content with the entire link into its routing processor after which will the demultiplexing in memory where it will be converted directly into IP sections.

Often, a multiplexer and demultiplexer are used together in to a single machine, that is usually described simply being a multiplexer. Both items are needed at both ends of the transmission link since most communications systems transmit in the directions.

In analog circuit design, a multiplexer can be a special kind of analog switch that connects one signal selected from the 3 inputs with a single output. There are many types of Multiplexers in Sopto, which is the best fiber optic network supplier in China.

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