Timing Chart - Samsung MO15E Series Service Manual

2 Product Specifications

2-3 Timing Chart

This section of the service manual describes the timing that the computer industry recognizes as standard
for computer-generated video signals.
Mode
VGA1/70 Hz
640 x 350
Timing
31.469
fH (kHz)
31.778
A µsec
B µsec 3.813
C µsec 1.589
D µsec 26.058
0.318
E µsec
70.086
fV (Hz)
14.268
O msec
P msec 0.064
Q msec 1.716
R msec 11.504
0.985
S msec
Clock
25.175
Frequency
(MHz)
Polarity
Positive
H.Sync
Negative
V.Sync
Separate
Remark
Separate Sync
Horizontal
Video
Video
C C D D E E
Sync Sync Sync
B
B
A
A
A : Line time total
C : Back porch
E : Front porch
MO15E*
Table 2-1 Timing Chart
IBM
VGA3/60 Hz
VGA2/70 Hz
640 x 480
720 x 400
31.469
31.469
31.777
31.778
3.813
3.813
1.589
1.589
26.058
26.058
0.318
0.318
70.087
59.940
14.268
16.683
0.064
0.064
0.858
0.794
13.155
15.761
0.191
0.064
28.322
25.175
Negative
Negative
Positive
Negative
Separate
Separate
Vertical
Video Video
Q Q R R S S
Sync Sync Sync
P P
P
O O
O
B : Horizontal sync width
D : Active time
VESA
640/72 Hz
640/75 Hz
640 x 480
640 x 480
37.861
37.500
26.413
26.667
1.270 2.032
3.810
3.810
20.825
20.317
0.508
0.508
72.809
75.000
13.735
13.333
0.079 0.080
0.528
0.427
13.100
12.800
0.026
0.027
31.500
31.500
Negative
Negative
Negative
Negative
Separate
Separate
O : Frame time total
Q : Back porch
S : Front porch
CONFIDENTIAL
800/60 Hz
800/56 Hz
800 x 600
800 x 600
35.156 37.879
26.400
28.444
3.200
2.000
2.200
3.556
20.000
22.222
0.667 1.000
56.250 60.317
16.579
17.778
0.106
0.057
0.607
0.626
17.067 15.840
0.028 0.026
36.000 40.000
Positive Positive
Negative Positive
Separate
Separate
P : Vertical sync width
R : Active time
2-3