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CCIR System N

625-line analog television transmission format

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

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]

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]

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

Notes and references

↑ Sony Corporation (2014). "Help Guide | On TV color systems". www.sony-asia.com.
1 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.
↑ 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.
1 2 Pemberton, Alan (30 August 2012). "World Analogue Television Standards and Waveforms - CCIR Transmission Systems". Pembers' Ponderings. Archived from the original on 2012-08-30.
↑ Recommendation ITU-R BT.470-6 -Conventional Television Systems (PDF). ITU-R. 1998.
↑ 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

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Video formats

Television

Analog

405 lines	System A
525 lines	System M (Color systems: NTSC, NTSC-J, Clear-Vision, PAL-M) B-MAC
625 lines	System B, C, D, G, H, I, K, L, N (Color systems: PAL, PAL-N, PALplus, SECAM) MAC
819 lines	System E, F
1125 lines	MUSE
1250 lines	HD-MAC
Audio	BTSC (MTS) EIAJ NICAM SAP Sound-in-Syncs Zweikanalton (A2/IGR)
Hidden signals	Captioning CGMS-A EPG GCR PDC Teletext VBI VEIL VIT VITC WSS XDS
Historical	Pre-1940 Mechanical television 180-line 343-line 375-line 441-line 455-line 567-line Field-sequential color system OSKM

Digital

Interlaced	SDTV 480i 576i HDTV 1080i
Progressive	LDTV 1seg 240p 288p EDTV 480p 576p HDTV 720p 1080p UHDTV 4K 8K
MPEG-2 Video	ATSC DVB DVB 3D-TV ISDB DTMB ABS-S
AVS	CMMB
AVS+^{[note 1]}	DTMB ABS-S
MPEG-4 Visual	MobaHo!^{[note 2]}
MPEG-4 AVC	ATSC A/72 CMMB DMB DTMB DVB SBTVD 1seg MobaHo!^{[note 2]}
AVS2^{[note 1]}	ABS-S
MPEG-H HEVC	ATSC 3.0 DVB HD DMB ISDB-S3 DTMB
Audio	AC-3 (5.1) AC-4 DTS DRA MPEG-1 Audio Layer II MPEG Multichannel PCM LPCM AAC HE-AAC MPEG-H 3D Audio
Hidden signals	AFD Broadcast flag Captioning CPCM EPG Teletext
1 2 Also used in China's DVB-S/S2 network. 1 2 Defunct.

Technical issues
14:9 compromise Broadcast-safe Digital cinema (DCI) Display motion blur MPEG transport stream Reverse Standards Conversion Standards conversion Television transmitter Test card Video on demand Video processing Widescreen signaling Templates (Analogue TV Topics)

v t e Analog television broadcasting topics
Systems	180-line 343-line 375-line 405-line (System A) 441-line 455-line 525-line (System M) 625-line (System B, System C, System D, System G, System H, System I, System K, System L, System N) 819-line (System E, System F)
Color systems	NTSC NTSC-J Clear-Vision PAL PAL-M PAL-S PALplus SECAM
Video	Back porch and front porch Black level Blanking level Chrominance Chrominance subcarrier Color burst Color frame sequence Color killer Color TV Composite video Frame (video) Horizontal scan rate Horizontal blanking interval Luma Nominal analogue blanking Overscan Raster scan Safe area Teletext Television lines Vertical blanking interval Vertical interval timecode White clipper
Sound	Multichannel Television Sound NICAM Sound-in-Syncs Zweikanalton
Modulation	Frequency modulation Quadrature amplitude modulation Vestigial sideband modulation (VSB)
Transmission	Amplifiers Antenna (radio) Broadcast transmitter/Transmitter station Cavity amplifier Differential gain Differential phase Diplexer Dipole antenna Dummy load Frequency mixer Intercarrier method Intermediate frequency Output power of an analog TV transmitter Pre-emphasis Residual carrier Split sound system Superheterodyne transmitter Synchronization of TV transmitter and receiver Television receive-only Direct-broadcast satellite television Television transmitter Terrestrial television Transposer Digital television transition
Frequencies & bands	Frequency offset Microwave transmission Television channel frequencies UHF VHF
Propagation	Beam tilt Distortion Earth bulge Field strength in free space Noise (electronics) Null fill Path loss Radiation pattern Skew Television interference
Testing	Distortionmeter Field strength meter Vectorscope VIT signals Zero reference pulse
Artifacts	Dot crawl Ghosting Hanover bars Sparklies

Sumber data: id.wikipedia.org via REST API v1

Specifications

See also

Notes and references

External links