CCIR System L

CCIR System L is an analog broadcast television system used in France, Luxembourg, Monaco, and Chausey. It was the last system to use positive video modulation and AM sound.

Initially adopted in 1963 for second national black and white public channel and officially associated with the SECAM color system (SECAM-L) in 1967, it was discontinued in 2011, when France transitioned to Digital Video Broadcasting.

Specifications

The main System L specifications are listed below:

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

Notes and references

External links

• ITU, Characteristics of television systems
• World Analogue Television Standards and Waveforms
• Fernsehnormen aller Staaten und Gebiete der Welt