RAD Data comm LA-210 Especificaciones descargar pdf (Pagina 16)

signals.

Laser

A device that transmits an extremely narrow and coherent beam

of electromagnetic energy in the visible light spectrum. Used as a

light source for fiber optic transmission (generally more expensive,

shorter lived, single mode only, for greater distances than LED).

Multiplexer

At one end of a communications link, a device that combines

several lower speed transmission channels into a single high speed

channel. A multiplexer at the other end reverses the process.

Sometimes called a mux. See Bit Interleaving/Multiplexing.

Network

(1) An interconnected group of nodes. (2) A series of points,

nodes, or stations connected by communications channels; the

collection of equipment through which connections are made

between data stations.

Port

The physical interface to a computer or multiplexer, for connection

of terminals and modems.

Single Mode

Describing an optical wave-guide or fiber that is designed to

propagate light of only a single wavelength (typically 5-10 microns

in diameter).

A digital transmission link with a capacity of 1.544 Mbps used in

North America. Typically channelized into 24 DS0s, each capable of

carrying a single voice conversation or data stream. Uses two pairs

of twisted pair wires.

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RAD Data comm LA-210 Especificaciones Pagina 16