563489578934

Sec. 8–9 Television 643
1
Max. carrier voltage H 1 2 3 4
Blanking level
Field 1 line numbers
(see note 15)
Equalizing
pulse
interval
Vert.
sync
pulse
interval
Equalizing
pulse
interval
etc.
0,5H
Hortizontal sync pulses S
H
(0.075 0.025)P (0.75 0.025)C
2
Reference black level
Reference white level
Zero carrier
Picture
Horizontal blanking
Field 2 line numbers
(see note 16) 0.5H
Sync
3H 3H 3H
t 3.02H + H
1
0
Vertical blanking 0.07V + 0.01V °
Bottom of picture
Start of field 1
(see note 13)
Time
1 2 3
4
etc.
H
P
C
(0.125 0.025)C
Top of picture
(see notes 3 and 5)
4 4
t 1 + V
Start of field 2 (see note 14)
3
3
Horizontal dimension not to scale in 1 , 2 , and
3
3 Detail between 3-3 in 2
Horizontal sync
Blanking level
H
Front porch
Color burst (see note 8)
Back porch
Reference white level
Zero carrier
Rear slope of vertical blanking (see note 3)
z=0.18H max.
(see note 4)
55
1/10 of max.
blanking
4 Detail between 4-4 in 2
5 Detail between 5-5 in 3
0.004H max.
0.004H max.
Blanking level
0.04H max.
(see note 6)
Equalizing
pulse
0.5H
H
Vertical
sync pulse
9/10 of max. sync
1/10 of max. sync
0.07H 0.01H °
S
x=0.02H min.
1/10S
0.125H max.
0.075H
y=0.145H
min.
9/10 of max. sync
8 cycles min.
0.90S to 1.1S
0.006H min.
Figure 8–37 U.S. television synchronizing waveform standards for analog color transmission.
(From Part 73 of FCC Rules and Regulations.)