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NTSC Video Reference
PROPAGATION DELAY THROUGH COAX CABLE

Practical figures are:

7.9” (20 cm) Coax =

6.1” (15.5cm) Coax 1 at 3.58 MHz
T at 3.58 MHz = 2.79.4 nanoseconds
T per degree at 3.58 MHz = .776 nanoseconds

 

DELAY TIME CONVERSIONS

Delay
(nanoseconds)
Phase @
3.58 MHz
Distance
  1   =
1.289
= 7.9” (20cm)
  2   =
2.577
= 15.7” (40cm)
  3   =
3.866
=
23.6” (60cm)
  4   =
5.155
=
31.5” (80cm)
  5   =
6.443
=
39.4” (1.Om)
  6   =
7.732
=
47.2” (1.2m)
  7   =
9.020
=
55.1” (1.4m)
  8   =
10.31
=
63.0” (1 .6m)
  9   =
11.60
=
70.9” (1 .8m)
10  =
12.89
=
78.7” (2.Om)

 

DELAY TIME CONVERSIONS

1 = 0.7760 =     6.1" (       15.5cm)
5 = 3.880 =    30.3" (      76.9cm)
10 = 7.760 =    60.6" (1m 53.9cm)
15 = 11.64 =    7' 6.9"(2m 30.8cm)
20 = 15.52 = 10' 1.3" (3m   8.1cm)
25 = 19.40 = 12' 7.6" (3m  85.0cm)
30 = 23.28 = 15' 1.9" (4m 62.0cm)
60 = 46.56 = 30' 3.8" (9m 24.0cm)
90 = 69.84 = 45' 5.7" (13m 86.1cm)
180 = 139.7 = 90' 11.3" (27m 71.9cm)
270 = 209.5 = 136' 5.0" (41m 58.0cm)
360 = 279.4 = 181' 10.7" (55m 44.0cm)
EIA COLOR FREQUENCIES

Subcarrier

3.579545 MHz

2H

31.468 KHz

Horizontal

15.734 KHz
Vertical
59.94 Hz
 

COLOR VECTORS

Reference Burst 180
I 303
Q 33
Yellow 167
Cyan 284
Green  241
Magenta 61
Red 104
Blue 347
 

METRIC
MULTIPLIER
PREFIXES
109 Giga G
106 Mega M
103 Kilo K
10-3 milli m
10-6 micro u
10-9 nano n
10-12 pico p

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