Digital Mode
1 2 3 4 5
6
7
Signal name
symbol
TEXT
mode
TEXT
mode
VGA VGA
VESA-VGA
VESA-VGA
VESA-VGA
H-frequency (kHz)
31.468
31.469
31.468
31.468
37.5
37.862
43.269
V-frequency (Hz)
70.087
70.087
70.087
59.941
75
72.807
85.005
Pixel rate (MHz)
25.175
28.322
25.175
25.175
31.5
31.501
36.000
H-sync Ths
96
108
96
96 64 40 56
H-back porch
Thb
48
54
48
48 120 128 80
Count num (H-total)
Thd
800
900
800
800 840 832 832
H- front porch
Thf
16
18
16
16 16 24 56
V-sync Tvs
2
2
2
2 3 3 3
V-back porch
Tvb
60
35
35
33 16 28 25
Count num (V-total)
Tvd
449
449
449
525 500 520 509
V-front porch
Tvf
37
12
12
10 1
9
1
H-sync. Polarity
Positive Negative Negative Negative
Negative
Negative
Negative
V-sync Polarity
Negative Positive
Positive Negative
Negative
Negative
Negative
H-resolution (dots)
640
720
640
640
640
640
640
V-resolution (lines)
350
400
400
480
480
480
480
8 9 10 11 12 13 14
Signal name
Symbol IBM-8514
A
SVGA SVGA SVGA SVGA XGA XGA
H-frequency
(kHz)
35.156 37.879 48.077 46.875 53.674 48.363 56.476
V-frequency
(Hz)
56.250 60.317 72.188 75.000 85.061 60.004 70.069
Pixel
rate
(MHz)
36.000 40.000 50.000 49.500 56.250 65.000 75.000
H-sync
Ths 72 128 120 80 64 136 136
H-back
porch
Thb 128 88 64 160 152 160 144
Count
num
(H-total)
Thd 1024 1056 1040 1056 1048 1344 1328
H-
front
porch Thf
24 40 56 16 32 24 24
V-sync
Tvs
2 4 6 3 3 6 6
V-back
porch
Tvb
22 23 23 21 27 29 29
Count
num
(V-total)
Tvd 625 628 666 625 631 806 806
V-front
porch Tvf
1 1 37 1 1 3 3
H-sync. Polarity
Positive
Positive
Positive
Positive
Positive
Negative
Negative
V-sync Polarity
Positive
Positive
Positive
Positive
Positive
Negative
Negative
H-resolution
(dots)
800 800 800 800 800 1024
1024
V-resolution
(lines)
600 600 600 600 600 768 768
11
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VG810s/b
Summary of Contents for VG810B
Page 30: ...6 6 Figure of Waveform 27 ViewSonic Corporation Confidential Do Not Copy VG810s b...
Page 31: ...28 ViewSonic Corporation Confidential Do Not Copy VG810s b...
Page 49: ...46 ViewSonic Corporation Confidential Do Not Copy VG810s b...
Page 50: ...47 ViewSonic Corporation Confidential Do Not Copy VG810s b...
Page 51: ...48 ViewSonic Corporation Confidential Do Not Copy VG810s b...
Page 53: ...10 Schematic Diagrams 50 ViewSonic Corporation Confidential Do Not Copy VG810s b...
Page 54: ...51 ViewSonic Corporation Confidential Do Not Copy VG810s b...
Page 55: ...52 ViewSonic Corporation Confidential Do Not Copy VG810s b...
Page 56: ...53 ViewSonic Corporation Confidential Do Not Copy VG810s b...
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Page 61: ...58 ViewSonic Corporation Confidential Do Not Copy VG810s b...
Page 62: ...59 ViewSonic Corporation Confidential Do Not Copy VG810s b...
Page 63: ...11 PCB Layout Diagrams 60 ViewSonic Corporation Confidential Do Not Copy VG810s b Main Board...
Page 64: ...61 ViewSonic Corporation Confidential Do Not Copy VG810s b Main Board...
Page 65: ...62 ViewSonic Corporation Confidential Do Not Copy VG810s b Power Board...
Page 66: ...63 ViewSonic Corporation Confidential Do Not Copy VG810s b Control Board...