TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
half duplex [2 records]
Record 1 - internal organization data 2009-11-18
Record 1, English
Record 1, Subject field(s)
- Air Navigation Aids
- Telecommunications
Record 1, Main entry term, English
- simplex
1, record 1, English, simplex
correct, officially approved
Record 1, Abbreviations, English
Record 1, Synonyms, English
- half duplex 2, record 1, English, half%20duplex
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A method in which telecommunication between two stations takes place in one direction at a time. 1, record 1, English, - simplex
Record number: 1, Textual support number: 1 OBS
In application to the aeronautical mobile service, this method may be subdivided as follows: a) single channel simplex; b) double channel simplex; c) offset frequency simplex. 1, record 1, English, - simplex
Record number: 1, Textual support number: 2 OBS
simplex: term and definition officially approved by the International Civil Aviation Organization (ICAO). 3, record 1, English, - simplex
Record number: 1, Textual support number: 3 OBS
In civil aviation, very high frequency (VHF) amplitude modulated (AM) radio is typically used for radio voice communication between personnel in the cockpit and personnel in the air traffic control tower. VHF AM radio utilizes "simplex" (also called "half duplex") mode: i.e. a particular channel is used for both sides of a two-way conversation, and only one party can talk at a time (also known as "two way radio"). 4, record 1, English, - simplex
Record number: 1, Textual support number: 4 OBS
Two definitions have arisen over time: a common definition, which is used as an ANSI [American National Standards Institute] standard and elsewhere, and an ITU-T [International Telecommunication Union - Telecommunication Standardization Sector] definition. The ITU definition of simplex is termed "half duplex" in other contexts. 5, record 1, English, - simplex
Record number: 1, Textual support number: 5 OBS
According to ANSI standard, simplex also refers to communication that occurs in one direction only, from one device to the next. In the simplex mode, one of the devices can transmit but cannot receive, or it receives but does not transmit. The half-duplex mode indicates a transmission in either direction, but it can take place in only one direction at a time. 2, record 1, English, - simplex
Record 1, Key term(s)
- half-duplex
Record 1, French
Record 1, Domaine(s)
- Aides à la navigation aérienne
- Télécommunications
Record 1, Main entry term, French
- simplex
1, record 1, French, simplex
correct, masculine noun, officially approved
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Méthode suivant laquelle les communications entre deux stations ont lieu dans un sens à la fois. 1, record 1, French, - simplex
Record number: 1, Textual support number: 1 OBS
Appliquée au service mobile aéronautique, cette méthode peut se subdiviser comme suit : a) simplex sur voie unique; b) simplex sur deux voies; c) simplex sur fréquences décalées. 1, record 1, French, - simplex
Record number: 1, Textual support number: 2 OBS
simplex : terme et définition uniformisés par l'Organisation de l'aviation civile internationale (OACI). 2, record 1, French, - simplex
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Ayuda para la navegación aérea
- Telecomunicaciones
Record 1, Main entry term, Spanish
- símplex
1, record 1, Spanish, s%C3%ADmplex
correct, masculine noun, officially approved
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Método en el cual las telecomunicaciones entre dos estaciones se efectúan cada vez en un solo sentido. 1, record 1, Spanish, - s%C3%ADmplex
Record number: 1, Textual support number: 1 OBS
En su aplicación al servicio móvil aeronáutico, este método puede subdividirse en la forma siguiente: a) simplex de canal único; b) simplex de doble canal; c) simplex de frecuencia aproximada. 1, record 1, Spanish, - s%C3%ADmplex
Record number: 1, Textual support number: 2 OBS
símplex: término y definición aceptados oficialmente por la Organización de Aviación Civil Internacional (OACI). 2, record 1, Spanish, - s%C3%ADmplex
Record 2 - internal organization data 2005-05-12
Record 2, English
Record 2, Subject field(s)
- Internet and Telematics
- Telecommunications Transmission
Record 2, Main entry term, English
- half duplex
1, record 2, English, half%20duplex
correct, noun, officially approved
Record 2, Abbreviations, English
- HDX 2, record 2, English, HDX
correct
Record 2, Synonyms, English
- semi-duplex 3, record 2, English, semi%2Dduplex
correct, officially approved
- half-duplex 4, record 2, English, half%2Dduplex
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
A system capable of working in either direction but not in both simultaneously. 5, record 2, English, - half%20duplex
Record number: 2, Textual support number: 1 OBS
For example, a walkie-talkie is a half-duplex device because only one party can talk at a time. In contrast, a telephone is a full-duplex device because both parties can talk simultaneously. 2, record 2, English, - half%20duplex
Record number: 2, Textual support number: 2 OBS
half duplex; semi-duplex: terms and definition officially approved by the Government EDP Standards Committee (GESC). 6, record 2, English, - half%20duplex
Record 2, French
Record 2, Domaine(s)
- Internet et télématique
- Transmission (Télécommunications)
Record 2, Main entry term, French
- semi-duplex
1, record 2, French, semi%2Dduplex
correct, masculine noun, officially approved
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Système pouvant fonctionner dans les deux sens mais non simultanément. 2, record 2, French, - semi%2Dduplex
Record number: 2, Textual support number: 1 OBS
semi-duplex : terme et définition uniformisés par le Comité des normes gouvernementales en informatique (CNGI). 3, record 2, French, - semi%2Dduplex
Record 2, Key term(s)
- semi duplex
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Internet y telemática
- Transmisión (Telecomunicaciones)
Record 2, Main entry term, Spanish
- semidúplex
1, record 2, Spanish, semid%C3%BAplex
correct, masculine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
- bidireccional alternativo 1, record 2, Spanish, bidireccional%20alternativo
correct, masculine noun
Record 2, Textual support, Spanish
Record number: 2, Textual support number: 1 DEF
Protocolo de comunicaciones asíncronas, en el que el canal de comunicaciones puede manipular solamente una señal a la vez. Las dos estaciones alternan sus transmisiones. 2, record 2, Spanish, - semid%C3%BAplex
Record 2, Key term(s)
- semi dúplex
- semi-dúplex
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