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CCIR System L is an analog
The main System L specifications are listed below:
* 
Television channels were arranged as follows:
ITU, Characteristics of television systems
{{Analogue TV transmitter topics ITU-R recommendations Television technology Video formats Broadcast engineering CCIR System
CCIR System L is an analog broadcast television system
Broadcast television systems (or terrestrial television systems outside the US and Canada) are the encoding or formatting systems for the transmission and reception of terrestrial television signals.
Analog television systems were standardized ...
used in France
France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
, Luxembourg
Luxembourg, officially the Grand Duchy of Luxembourg, is a landlocked country in Western Europe. It is bordered by Belgium to the west and north, Germany to the east, and France on the south. Its capital and most populous city, Luxembour ...
, Monaco
Monaco, officially the Principality of Monaco, is a Sovereign state, sovereign city-state and European microstates, microstate on the French Riviera a few kilometres west of the Regions of Italy, Italian region of Liguria, in Western Europe, ...
and Chausey
Chausey () is a group of small islands, islets and rocks off the coast of Normandy, in the English Channel. It lies from Granville and forms a ''quartier'' of the Granville commune in the Manche '' département''.
Chausey forms part of the C ...
. It was the last system to use positive video modulation and AM sound.
Initially adopted in the 1970s and associated with the SECAM
SECAM, also written SÉCAM (, ''Séquentiel de couleur à mémoire'', French for ''sequential colour memory''), is an analog color television system that was used in France, Russia and some other countries or territories of Europe and Africa. ...
color system (SECAM-L), it was discontinued in 2011, when France transitioned to Digital Video Broadcasting
Digital Video Broadcasting (DVB) is a set of international open standards for digital television. DVB standards are maintained by the DVB Project, an international industry consortium, and are published by a Joint Technical Committee (JTC) o ...
.
Specifications
The main System L specifications are listed below:
* Frame rate
Frame rate, most commonly expressed in frame/s, or FPS, is typically the frequency (rate) at which consecutive images (Film frame, frames) are captured or displayed. This definition applies to film and video cameras, computer animation, and moti ...
: 25 Hz
* Interlace: 2/1
* Field rate
Field may refer to:
Expanses of open ground
* Field (agriculture), an area of land used for agricultural purposes
* Airfield, an aerodrome that lacks the infrastructure of an airport
* Battlefield
* Lawn, an area of mowed grass
* Meadow, a gras ...
: 50 Hz
* Lines/frame: 625
* Line rate
In telecommunications and computing, bit rate (bitrate or as a variable ''R'') is the number of bits that are conveyed or processed per unit of time.
The bit rate is expressed in the unit bit per second (symbol: bit/s), often in conjunction w ...
: 15.625 kHz
* Visual bandwidth: 6 MHz
* Vision modulation: Positive
* Preemphasis: 50 μs
* Sound modulation: AM
* Sound offset: -6.5 MHz
* Channel bandwidth: 8 MHz
Television channels were arranged as follows:
See also
*Broadcast television systems
Broadcast television systems (or terrestrial television systems outside the US and Canada) are the encoding or formatting systems for the transmission and reception of terrestrial television signals.
Analog television systems were standardized ...
* Television transmitter
A television transmitter is a transmitter that is used for terrestrial television, terrestrial (over-the-air) television broadcasting. It is an electronic device that radiates radio waves that carry a video signal representing moving images, alon ...
* Transposer
In broadcasting, a transposer or translator is a device in or beyond the service area of a radio or television station transmitter that rebroadcasts signals to receivers which can’t properly receive the signals of the transmitter because of a p ...
Notes and references
External links
ITU, Characteristics of television systems
{{Analogue TV transmitter topics ITU-R recommendations Television technology Video formats Broadcast engineering CCIR System