Timing Chart; Sync-On-Green - Samsung 214T Service Manual

14 Reference Infomation

14-4 Timing Chart

- This section of the service manual describes the timing that the computer industry recognizes as standard for
computer-generated video signals.
IBM
Mode
VGA2/ VGA3/
70 Hz 60 Hz
Timing 720 x 400 640 x 480
31.469 31.469
31.777 31.778
μ
μ 3.813 3.813
1.589 1.589
μ
26.058 26.058
μ
μ 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 26.175
Negative Negative
Positive Negative
Separate Separate
Separate Sync
Video
C D E
Sync
B
A
A : Line time total
C : Back porch
E : Front porch
14-6
Table 2-1 Timing Chart
640/75 Hz 800/60 Hz 800/75 Hz
640x480 800x600 800x600
37.500 37.879 46.875
26.667 26.400 21.333
2.032 3.200 1.616
3.810 2.200 3.232
20.317 20.000 16.162
0.508 0.000 0.323
75.000 60.317 75.000
13.333 16.579 13.333
0.080 0.106 0.064
0.607 0.448
0.427
12.800 15.840 12.800
0.027 0.0261 0.021
31.500 40.000 49.500
Negative Positive Positive
Negative Positive Positive
Separate Separate Separate
Video
Q R S
Sync
P
O
B : Horizontal sync width
D : Active time
VESA
1024/60Hz 1024/75Hz 1280/60Hz
1024x768 1024x768 1280x1024
48.363 60.023 63.981
20.677 16.660 11.852
2.092 1.219
2.462 2.235
15.754 13.003
0.369 0.203
60.004 75.029 60.020
16.666 13.328 16.005
0.124 0.050
0.600 0.466
15.880 12.795 15.630
0.062 0.017
75.000 78.750 108.000
Negative Positive Positive
Negative Positive
Positive
Separate Separate Separate
H/V Composite Sync

Sync-on-Green

O : Frame time total
Q : Back porch
S : Front porch
1280/75Hz 1600/60Hz
1280x1024 1600x1200
79.975 75.000
12.504 13.333
1.037 1.067 1.185
2.296 1.837 1.877
9.259 9.481 9.877
0.000 0.119 0.395
75.025 60.000
13.329 16.667
0.047 0.038 0.040
0.594 0.475 0.613
12.804 16.000
0.016 0.013 0.013
135.000 162.000
Positive Positive
Positive Positive
Separate Separate
P : Vertical sync width
R : Active time