Timing Chart - Samsung PN19MT Service Manual

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
IBM
VGA2/70 Hz VGA3/60 Hz
720 x 400
Timing
fH (kHz) 31.469
A µsec 31.777
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
PN19MT/MO/IO
x178/19P2
Table 2-1. Timing Chart
640/85 Hz
800/85 Hz
640 x 480 640 x 480
800 x 600
31.469 43.269
31.778 23.111
3.813 1.556
1.907 2.222
25.422 17.778
0.636 1.556
59.940 85.008
16.683 11.764
0.064 0.671
1.048 0.578
15.253 11.093
0.318 0.023
25.175 36.000
Negative Negative
Negative Negative
Separate 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
1024/85 Hz
1280/75 Hz
1280 x 1024
1024 x 768
53.674 68.677
18.631
14.561
1.138 1.016
2.702
2.201
14.222 10.836
0.569 0.508
85.061 84.997
11.756 11.765
0.056
0.044
0.503 0.524
11.179
11.183
0.019 0.015
56.250 94.500 135.000
Positive Positive
Positive
Positive Positive Positive
Separate
Separate
O : Frame time total
Q : Back porch
S : Front porch
2 Product Specifications
1280/85 Hz 1600/75 Hz
1280 x 1024 1600 x 1200
79.976 91.146 93.750
12.504 10.667
10.971
1.067 1.016
1.837
1.422
9.481 8.127
0.119
0.406
75.025 85.024 75.000
13.329 11.761 13.333
0.038
0.033
0.475 0.483
12.804 12.800
11.235
0.013 0.011
157.500 202.500
Positive
Positive
Positive Positive
Separate Separate
P : Vertical sync width
R : Active time
0.948
1.501
7.901
0.316
0.032
0.491
0.011
2-3