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