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

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

   0.299 × Red
   0.587 × Green
 + 0.114 × Blue
 ───────────────
    Luma (Y)

  (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

   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