NTSC
Never The Same Color

The Impressionistic Era of Television

PDFs & Test Patterns
NTSC Specifications
Enhanced NTSC &
PAL-M Test Patterns

640×480 720×480 J
704×480 854×480

PAL Film Mode
854×480 Version

PAL TV in 4MHz
24Fps 432i 13:8

720×432 Version

PAL TV in 2MHz
24Fps 288i 16:9


New Analog TV
In A Digital World 1st

More Condensed Versions
NeoRetro™ Analog TV
768×432  720×480  856×528

A Look At SÉCAM

Slow Scan TV -- 1st


General Specifications
Aspect Ratio                 4:3
Resolution
   Digital   Resolution   640 × 480
   Analog    Resolution   450 × 340
   Broadcast Resolution   350 × 340

Channel Allocation            6 MHz
Video Bandwidth              4⅕ MHz
Horizontal Freq.      15.734264 kHz
Vertical Freq.            59.94 Hz
Vertical Scan Lines         525
  (Interlace)               262½


Chroma Subcarrier 
   227½ × H  =       3.57954506 MHz 
   I Bandwidth         1½ MHz  123°
   Q Bandwidth          ½ MHz   33°

Sound
 L+R  FM Subcarrier    
   286 × H          = 4.4999995 MHz

 L─R  AM-DSB-SC Subcarrier 
   2 × H           = 31.4685280 kHz
                  on L+R Subcarrier

L+R & L─R Peak Deviation    ±50 kHz

Luminance Weighting
 Red   (R)   29.9 %
 Green (G)   58.7 %
 Blue  (B)   11.4 %

   0.299 × Red
   0.587 × Green
 + 0.114 × Blue
 ───────────────
    Luma (Y)
Chrominance Weighting
  (B-Y)     0°     49.2111 %
  (R-Y)    90°     87.7283 %
  (G-Y) 235.8°    142.4415 %


  0.877283×(R-Y) × (3.58 MHz @ 90°)
 +0.492111×(B-Y) × (3.58 MHz @ 0°)
 ──────────────────────────────────
   Chroma Quadrature Sub-Carrier

Timings
   Horizontal             Vertical
Scan       63.55µs   Scan        16.68ms
Image      52.65µs   Image       15.25ms
Front Porch  1.5µs   Front Porch 190.7µs
Sync Pulse   4.7µs   Sync Pulse  190.7µs
Back Porch   4.7µs   Back Porch  1.049ms
Blank       10.9µs   Blank       1.430ms

Adjusted Luma-Chroma P-P Values
Luma Luma
%
Chroma
p-p
Chroma
Phase
Chroma
+
100%
Saturated
Colors
Chroma
1.0000 100 0 - - 1.0000 White 1.0000
0.9247 88.6 0.5911 167.08° 1.2202 Yellow 0.6291
0.8024 70.1 0.8356 283.46° 1.2202 Cyan 0.3847
0.7271 58.7 0.7802 240.71° 1.1172 Green 0.3370
0.6122 41.3 0.7802 60.71° 1.0023 Magenta 0.2220
0.5368 29.9 0.8356 103.46° 0.9546 Red 0.1190
0.4146 11.4 0.5911 347.08° 0.7102 Blue 0.1190
0.3393 0 0 - - 0.3393 Black 0.3393

Oscilloscope
NTSC OscilloScope

Vector Scope
NTSC VectorScope

I @ 123° Q @ 33°


Dot Crawl Patterns (⅛ Speed)

NTSC

PAL U

PAL V

2:1 De-Interlaced NTSC & PAL
On Screen Chroma Phase Dot Patterns



2:1 De-Interlaced PAL-M On Screen
Chroma Phase Dot Patterns Using
Different Number of Scan Lines



PAL On Screen Vector
Rotation/Shift & V Switch


150×150
(CC BY-SA 4.0)


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J. S. Gilstrap Copyright ©2000 ©2018
All Rights Reserved. ─ Creative Commons (CC BY-SA 4.0)