Definitions for data link

This page provides all possible meanings and translations of the word data link

Princeton's WordNet

  1. link, data link(noun)

    an interconnecting circuit between two or more locations for the purpose of transmitting and receiving data

Freebase

  1. Data link

    In telecommunication a data link is the means of connecting one location to another for the purpose of transmitting and receiving digital information. It can also refer to a set of electronics assemblies, consisting of a transmitter and a receiver and the interconnecting data telecommunication circuit. These are governed by a link protocol enabling digital data to be transferred from a data source to a data sink. There are at least three types of basic data-link configurations that can be conceived of and used: ⁕Simplex communications, most commonly meaning all communications in one direction only. ⁕Half-duplex communications, meaning communications in both directions, but not both ways simultaneously. ⁕Duplex communications, communications in both directions simultaneously. In civil aviation, a data-link system is used to send information between aircraft and air traffic controllers when an aircraft is too far from the ATC to make voice radio communication and radar observations possible. Such systems are used for aircraft crossing the Atlantic and Pacific oceans. One such system, used by NavCanada and NATS over the North Atlantic, uses a five-digit data link sequence number confirmed between air traffic control and the pilots of the aircraft before the aircraft proceeds to cross the ocean. This system uses the aircraft's flight management computer to send location, speed and altitude information about the aircraft to the ATC. ATC can then send messages to the aircraft regarding any necessary change of course.

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