To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

4,5
Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
Live Statistics
English Articles
Improved in 24 Hours
Added in 24 Hours
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.
.
Leo
Newton
Brights
Milds

From Wikipedia, the free encyclopedia

CCIR System N is an analog broadcast television system introduced in 1951 and adopted by Argentina, Paraguay and Uruguay (since 1980), paired with the PAL color system (PAL-N).[1][2] It was also used briefly in Brazil and Venezuela.

It employs the 625 line/50 field per second waveform of PAL-B/G, D/K, H, and I, but on a 6 MHz channel with a chrominance subcarrier frequency of 3.582056 MHz[2][3][4] (very similar to NTSC). On the studio production level, PAL-B cameras and equipment were used, with the signal then transcoded to PAL-N for broadcast.[2] This allows 625-line, 50-frame/s video to be broadcast in a 6-MHz channel, at some cost in horizontal resolution.

Specifications

Some of the important specs are listed below.[5][3]

System N specifications
Frame rate Interlace Field rate Line/frame Line rate Visual b/w Vision mod. Preemphasis Sound mod. Sound offset Channel b/w
25 2/1 50 625 15625 4.2 MHz. Neg. FM +4.5 MHz. 6 MHz.
Plan showing VHF frequency ranges for ITU Systems
Plan showing VHF frequency ranges for ITU Systems

Television channels were arranged as follows:[6]

Channel Channel Limits (MHz) Vision Carrier (MHz) Main Sound Carrier (MHz)
A14/J13 470.00 - 476.00 471.25 475.75
A15/J14 476.00 - 482.00 477.25 481.75
A16/J15 482.00 - 488.00 483.25 487.75
A17/J16 488.00 - 494.00 489.25 493.75
A18/J17 494.00 - 500.00 495.25 499.75
A19/J18 500.00 - 506.00 501.25 505.75
A20/J19 506.00 - 512.00 507.25 511.75
A21/J20 512.00 - 518.00 513.25 517.75
A22/J21 518.00 - 524.00 519.25 523.75
A23/J22 524.00 - 530.00 525.25 529.75
A24/J23 530.00 - 536.00 531.25 535.75
A25/J24 536.00 - 542.00 537.25 541.75
A26/J25 542.00 - 548.00 543.25 547.75
A27/J26 548.00 - 554.00 549.25 553.75
A28/J27 554.00 - 560.00 555.25 559.75
A29/J28 560.00 - 566.00 561.25 565.75
A30/J29 566.00 - 572.00 567.25 571.75
A31/J30 572.00 - 578.00 573.25 577.75
A32/J31 578.00 - 584.00 579.25 583.75
A33/J32 584.00 - 590.00 585.25 589.75
A34/J33 590.00 - 596.00 591.25 595.75
A35/J34 596.00 - 602.00 597.25 601.75
A36/J35 602.00 - 608.00 603.25 607.75
A37/J36 608.00 - 614.00 609.25 613.75
A38/J37 614.00 - 620.00 615.25 619.75
A39/J38 620.00 - 626.00 621.25 625.75
A40/J39 626.00 - 632.00 627.25 631.75
A41/J40 632.00 - 638.00 633.25 637.75
A42/J41 638.00 - 644.00 639.25 643.75
A43/J42 644.00 - 650.00 645.25 649.75
A44/J43 650.00 - 656.00 651.25 655.75
A45/J44 656.00 - 662.00 657.25 661.75
A46/J45 662.00 - 668.00 663.25 667.75
A47/J46 668.00 - 674.00 669.25 673.75
A48/J47 674.00 - 680.00 675.25 679.75
A49/J48 680.00 - 686.00 681.25 685.75
A50/J49 686.00 - 692.00 687.25 691.75
A51/J51 692.00 - 698.00 693.25 697.75
A52/J51 698.00 - 704.00 699.25 703.75
A53/J52 704.00 - 710.00 705.25 709.75
A54/J53 710.00 - 716.00 711.25 715.75
A55/J54 716.00 - 722.00 717.25 721.75
A56/J55 722.00 - 728.00 723.25 727.75
A57/J56 728.00 - 734.00 729.25 733.75
A58/J57 734.00 - 740.00 735.25 739.75
A59/J58 740.00 - 746.00 741.25 745.75
A60/J59 746.00 - 752.00 747.25 751.75
A61/J60 752.00 - 758.00 753.25 757.75
A62/J61 758.00 - 764.00 759.25 763.75
A63/J62 764.00 - 770.00 765.25 769.75
A64 770.00 - 776.00 771.25 775.75
A65 776.00 - 782.00 777.25 781.75
A66 782.00 - 788.00 783.25 787.75
A67 788.00 - 794.00 789.25 793.75
A68 794.00 - 800.00 795.25 799.75
A69 800.00 - 806.00 801.25 805.75

See also

Notes and references

  1. ^ "Help Guide | On TV color systems". www.sony-asia.com.
  2. ^ a b c Tecnologica, Centro de Informacion (January 19, 1999). "Informacion Tecnologica". Centro de Informacion Tecnologica – via Google Books.
  3. ^ a b "World Analogue Television Standards and Waveforms". August 30, 2012. Archived from the original on 2012-08-30.
  4. ^ RECOMMENDATION ITU-R BT.470-6 -CONVENTIONAL TELEVISION SYSTEMS (PDF). ITU-R. 1998.
  5. ^ Reference Data for Radio Engineers, ITT Howard W.Sams Co., New York, 1977, section 30
  6. ^ "World Analogue Television Standards and Waveforms". August 30, 2012. Archived from the original on 2012-08-30.

External links

This page was last edited on 23 July 2022, at 23:08
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.