CCIR System N is an analog broadcast television system introduced in 1951 and adopted by

Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...

Paraguay Paraguay, officially the Republic of Paraguay, is a landlocked country in South America. It is bordered by Argentina to the Argentina–Paraguay border, south and southwest, Brazil to the Brazil–Paraguay border, east and northeast, and Boli ...

and

Uruguay Uruguay, officially the Oriental Republic of Uruguay, is a country in South America. It shares borders with Argentina to its west and southwest and Brazil to its north and northeast, while bordering the Río de la Plata to the south and the A ...

, paired with the

PAL Phase Alternating Line (PAL) is a color encoding system for analog television. It was one of three major analogue colour television standards, the others being NTSC and SECAM. In most countries it was broadcast at 625 lines, 50 fields (25 ...

color system ( PAL-N) since 1980. It employs the 625 line/50 field per second waveform of CCIR Systems B/ G, D/ K, and I, but on a 6 MHz channel with a

chrominance Chrominance (''chroma'' or ''C'' for short) is the signal used in video systems to convey the color information of the picture (see YUV color model), separately from the accompanying Luma (video), luma signal (or Y' for short). Chrominance is usu ...

subcarrier frequency of 3.582056 MHz (similar to

NTSC NTSC (from National Television System Committee) is the first American standard for analog television, published and adopted in 1941. In 1961, it was assigned the designation System M. It is also known as EIA standard 170. In 1953, a second ...

Specifications

The general System N specifications are listed below:Reference Data for Radio Engineers, ITT Howard W.Sams Co., New York, 1977, section 30 VHF Usage

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: 4.2 MHz * Vision modulation: Negative * Preemphasis: 75 μs * Sound modulation: FM * Sound offset: +4.5 MHz * Channel bandwidth: 6 MHz

Notes and references

External links

World Analogue Television Standards and Waveforms

{{Analogue TV transmitter topics ITU-R recommendations Television technology Video formats Broadcast engineering CCIR System

Specifications

See also

Notes and references

External links