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2 Product Specifications
2-4 GH19B*
Timing No.
Originator
Mode Name
Resolution (HxV)
1
IBM
VGA1
640x350
2
IBM
VGA2
720x400
3
IBM
VGA3
640x480
11
VESA
640/72Hz
640x480
17
VESA
640/75Hz
640x480
HORIZONTAL
Frequency
Total time
Active time
Blank time
Border (L / R)
Data time
Front porch
Sync. width
Back porch
Sync. polarity
31.469kHz
31.778
26.058
5.720
0.318
25.422
0.318
3.813
1.589
Positive
31.469kHz
31.777
26.058
5.720
0.318
25.422
0.318
3.813
1.589
Negative
31.469kHz
31.778
26.058
5.720
0.318
25.422
0.318
3.813
1.589
Negative
37.861kHz
26.413
20.825
5.588
0.254
20.317
0.508
1.270
3.810
Negative
37.500kHz
26.667
20.317
6.350
0.000
20.317
0.508
2.032
3.810
Negative
VERTICAL
Frequency
Total time
Active time
Blank time
Border (T / B)
Data time
Front porch
Sync. width
Back porch
Sync. polarity
70.086Hz
14.268ms
11.504ms
2.764ms
0.191ms
11.122ms
0.985ms
0.064ms
1.716ms
Negative
70.087Hz
14.268ms
13.155ms
1.113ms
0.222ms
12.711ms
0.191ms
0.064ms
0.858ms
Positive
59.940Hz
16.683ms
15.761ms
0.922ms
0.254ms
15.253ms
0.064ms
0.064ms
0.794ms
Negative
72.809Hz
13.735ms
13.100ms
0.635ms
0.211ms
12.678ms
0.026ms
0.079ms
0.528ms
Negative
75.000Hz
13.333ms
12.800ms
0.533ms
0.000ms
12.800ms
0.027ms
0.080ms
0.427ms
Negative
Dot Clock 25.175MHz 28.322MHz 25.175MHz 31.500MHz 31.500MHz
Sync. Type
Scan Type
*
Separate
N/I
Separate
N/I
Separate
N/I
Separate
N/I
Separate
N/I
µs
µs
µs
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µs
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µs
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µs
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µs
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µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
2-3-2 Supported Modes (1)