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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
70.000
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
10
6
1
9
1
H-sync. Polarity
Positive Negative Negative Negative
Negative
Negative
Negative
V-sync Polarity
Negative Positive Negative 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
Symbo
l
IBM-8514A
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
Negative
Positive
Positive
Positive
Positive Negative
Negative
V-sync Polarity
Negative
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
VG910s/b
Summary of Contents for VG910b-1
Page 30: ...6 6 Figure of Waveform 27 ViewSonic Corporation Confidential Do Not Copy VG910s b ...
Page 31: ...28 ViewSonic Corporation Confidential Do Not Copy VG910s b ...
Page 51: ...48 ViewSonic Corporation Confidential Do Not Copy VG910s b ...
Page 52: ...49 ViewSonic Corporation Confidential Do Not Copy VG910s b ...
Page 53: ...50 ViewSonic Corporation Confidential Do Not Copy VG910s b ...
Page 55: ...52 ViewSonic Corporation Confidential Do Not Copy VG910s b 10 Schematic Diagrams ...
Page 56: ...53 ViewSonic Corporation Confidential Do Not Copy VG910s b ...
Page 57: ...54 ViewSonic Corporation Confidential Do Not Copy VG910s b ...
Page 58: ...55 ViewSonic Corporation Confidential Do Not Copy VG910s b ...
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Page 60: ...57 ViewSonic Corporation Confidential Do Not Copy VG910s b ...
Page 61: ...58 ViewSonic Corporation Confidential Do Not Copy VG910s b ...
Page 62: ...59 ViewSonic Corporation Confidential Do Not Copy VG910s b ...
Page 63: ...60 ViewSonic Corporation Confidential Do Not Copy VG910s b ...
Page 64: ...61 ViewSonic Corporation Confidential Do Not Copy VG910s b ...
Page 65: ...62 ViewSonic Corporation Confidential Do Not Copy VG910s b 11 PCB Layout Diagrams Main Board ...
Page 66: ...63 ViewSonic Corporation Confidential Do Not Copy VG910s b Main Board ...
Page 67: ...64 ViewSonic Corporation Confidential Do Not Copy VG910s b Power Board ...
Page 68: ...65 ViewSonic Corporation Confidential Do Not Copy VG910s b Control Board ...