參數(shù)資料
型號: CH7012A
廠商: Electronic Theatre Controls, Inc.
英文描述: Chrontel CH7012 TV Output Device
中文描述: 昆泰CH7012電視輸出設備
文件頁數(shù): 14/42頁
文件大小: 551K
代理商: CH7012A
CHRONTEL
NTSC and PAL Operation
Composite and S-Video outputs are supported in either NTSC or PAL format. The general parameters used to
characterize these outputs are listed in
Table 9
and shown in
Figure 7
. (See
Figures 10
through
15
for illustrations
of composite and S-Video output waveforms).
CH7012A
14
201-0000-042 Rev. 1.1, 9/29/2000
1.
2.
3.
Durations vary slightly in different modes due to the different clock frequencies used.
Active video and black (F, G, H) times vary greatly due to different scaling ratios used in different modes.
Black times (F and H) vary with position controls.
Figure 7: NTSC / PAL Composite Output
Table 8. NTSC/PAL Composite Output Timing Parameters (in mS)
Symbol
Description
Level (mV)
Duration (uS)
NTSC
PAL
NTSC
PAL
A
Front Porch
287
300
1.49 - 1.51
1.48 - 1.51
B
Horizontal Sync
0
0
4.69 - 4.72
4.69 - 4.71
C
Breezeway
287
300
0.59 - 0.61
0.88 - 0.92
D
Color Burst
287
300
2.50 - 2.53
2.24 - 2.26
E
Back Porch
287
300
1.55 - 1.61
2.62 - 2.71
F
Black
340
300
0.00 - 7.50
0.00 - 8.67
G
Active Video
340
300
37.66 - 52.67
34.68 - 52.01
H
Black
340
300
0.00 - 7.50
0.00 - 8.67
A
B
C
D
E
F
G
H
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