CCIR System N

CCIR System N is an analog broadcast television system introduced in 1951 and adopted by Argentina, Paraguay and Uruguay, paired with the PAL color system (PAL-N) since 1980.^[1][2][3]

Analog TV systems global map, with System N in orange.

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 subcarrier frequency of 3.582056 MHz^[2][4][5] (similar to NTSC).

Specifications

The general System N specifications are listed below.^[6][4]

Plan showing VHF frequency ranges for ITU Systems

• Frame rate: 25 Hz
• Interlace: 2/1
• Field rate: 50 Hz
• Lines/frame: 625
• Line rate: 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

See also

• PAL
• PAL-N
• Broadcast television systems
• Multichannel Television Sound
• Pan-American television frequencies

Notes and references

1. Sony Corporation (2014). "Help Guide | On TV color systems". www.sony-asia.com.
2. Iazbec; Soria; Tulli; Gonzalez (1999). Estudio de las tecnicas de transcodificacion de señales de television PAL-B / PAL-N (in Spanish). Vol. 10. Centro de Informacion Tecnologica. pp. 341–349.
3. Trappe, Raffael Amadeus (2005). "Worldwide TV Systems (NTSC, PAL, and SECAM)". Paradiso-Design. Archived from the original on 2023-04-19. Retrieved 2023-11-05.
4. Pemberton, Alan (August 30, 2012). "World Analogue Television Standards and Waveforms - CCIR Transmission Systems". Pembers' Ponderings. Archived from the original on 2012-08-30.
5. Recommendation ITU-R BT.470-6 -Conventional Television Systems (PDF). ITU-R. 1998.
6. Reference Data for Radio Engineers, ITT Howard W.Sams Co., New York, 1977, section 30

External links

• World Analogue Television Standards and Waveforms
• Fernsehnormen aller Staaten und Gebiete der Welt^{[permanent dead link]}