SN28837

1/2-INCH PAL TIMER

SOCS031B – JULY 1991

9

POST OFFICE BOX 655303

Horizontal

Scale†

SH1,GT3/SH2,

GT1/SH3

GT2

S1,S2,S3

HSYNC

4

08

212

208

12

16 20 24

28

32 36

40

44

48

52 56

60

64 68 72 76

80 96 100 104 108 112 116 120 124

CP2

BCP2

BCP1

SCBLK

5

200

196

192

CLK

Continuous

(214)

21

EQ

513

11

2

VS

5

203

96

204

120

11

2

CBLK

040

BF

23.5

31

LSW

5

5

024

048

521

038

30

34

30

34

5

112

HGATE

PS

24

28

T

04

812

16

20

4

8

12

16

20

24

See Note A

CP1

IDP

CSYNC

† For the horizontal scale (T1 clock), one interval = 299 ns

≥ 4 master-clock periods.

NOTES: A. Although S1, S2, and S3 appear to be coincident, S1 leads S2 by t5 ns, and S2 leads S3 by 75 ns between 4 and 24 on the horizontal

scale.

B. 1 TV line = 64

µs = 214 horizontal clocks

Figure 5. Horizontal Timing