Timing Chart - Samsung CKF5607L Service Manual

3-3 Timing Chart

This section of the service manual describes the timing that the computer industry recognizes as standard
for computer-generated video signals.
Mode
IBM
VGA2/70 Hz VGA3/60 Hz
720 x 400 640 x 480
Timing
fH (kHz) 31.469
A µsec 31.778
B µsec 3.813
C µsec 1.907
D µsec 25.422
E µsec 0.636
fV (Hz) 70.087
O msec 14.268
P msec 0.064
Q msec 1.080
R msec 12.711
S msec 0.413
Clock
Frequency 28.322
(MHz)
Polarity
H.Sync Negative
V.Sync Positive
Remark Separate
Separate Sync
Horizontal
Video
Video
C D E
C D E
Sync Sync Sync
B
B
A
A
A : Line time total
C : Back porch
E : Front porch
CKF5607L
Table 3-1. Timing Chart
640/75 Hz 640/85 Hz
640 x 480 640 x 480
31.469 37.500 43.269
31.778 26.667 23.111
3.813 2.032
1.907 3.810
25.422 20.317 17.778
0.636 0.508
59.940 75.000 85.008
16.683 13.333 11.764
0.064 0.080
1.048 0.427
15.253 12.800 11.093
0.318 0.027
25.175 31.500 36.000
Negative Negative Negative
Negative Negative Negative
Separate Separate Separate
Vertical
Video
Video
Q Q R R
Sync Sync Sync
P P
P
O O
O
B : Horizontal sync width
D : Active time
VESA
800/75 Hz 800/85 Hz
800 x 600 800 x 600
46.875 53.674
21.333 18.631
1.556 1.616 1.138
2.222 3.232 2.702
16.162 14.222
1.556 0.323 0.569
75.000 85.061
13.333 11.756
0.671 0.064 0.056
0.578 0.448 0.503
12.800 11.179
0.023 0.021 0.019
49.500 56.250
Positive Positive
Positive Positive
Separate Separate
A
Horizontal
B
S S
O : Frame time total
Q : Back porch
S : Front porch
3 Product Specifications
1024/85 Hz 1280/60 Hz
1024 x 768 1280 x 1024
68.677 63.980
14.561 15.630
1.016 1.040
2.201 2.300
10.836 11.850
0.508 0.440
84.997 60.020
11.765 16.66
0.044 0.050
0.524 0.590
11.183 16.010
0.015 0.020
94.500 108.000
Positive Positive
Positive Positive
Separate Separate
H/V Composite Sync
VIDEO
Q S
R
Vertical
P
O
P : Vertical sync width
R : Active time
Apple Mac.
640/67 Hz
640 x 480
35.000
28.571
2.116
3.175
21.164
2.116
66.667
15.000
0.086
1.114
13.714
0.086
30.240
Negative
Negative
Composite
3-3