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Analog timing mode table
1 2 3 4 5 6
7
Signal name
symbol TEXT mode TEXT mode
VGA
MAC-II VESA-VGA VESA-VG
A
VESA-VG
A
H-frequency
(kHz)
31.468
31.469
31.468
35.001 37.5 37.862
43.269
V-frequency (Hz)
70.087
70.087
59.941
66.667
75
72.807
85.005
Pixel
rate
(MHz)
25.175
28.322
25.175
30.240 31.5 31.501
36.000
H-sync
Ths
96 108 96 64 64 40
56
H-back porch
Thb
48
54
48
96
120
128
80
Count
num
(H-total)
Thd
800 900 800 864 840 832
832
H-
front
porch Thf
16 18 16 64 16 24
56
V-sync
Tvs
2 2 2 3 3 3
3
V-back
porch Tvb
60 35 33 39 16 28
25
Count
num
(V-total)
Tvd
449 449 525 525 500 520
509
V-front
porch
Tvf
37
12
10
3 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)
350 400 480 480 480 480
480
8 9 10
11
12
13
14
Signal name
Symbol IBM-8514A
SVGA
SVGA
SVGA
SVGA
MAC 16"
XGA
H-frequency (kHz)
35.156
37.879
48.077
46.875
53.674
49.725
48.363
V-frequency
(Hz)
56.250 60.317 72.188 75.000 85.061 74.5 60.004
Pixel
rate
(MHz)
36.000 40.000 50.000 49.500 56.250 57.283
65.000
H-sync
Ths
72 128
120
80 64 64
136
H-back
porch Thb
128 88 64 160 152 224
160
Count
num
(H-total)
Thd
1024 1056 1040 1056 1048 1152
1344
H-
front
porch Thf
24 40 56 16 32 32
24
V-sync
Tvs
2 4 6 3 3 3
6
V-back
porch Tvb
22 23 23 21 27 39
29
Count
num
(V-total)
Tvd
625 628 666 625 631 667
806
V-front
porch
Tvf
1 1 37
1 1 1
3
!
28
ViewSonic Corporation
Confidential – Do Not Copy
VX900-2
Summary of Contents for VX900-2
Page 58: ...6 Mechanical Assembly 64 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 59: ...65 ViewSonic Corporation Confidential Do Not Copy VX900 2...
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Page 63: ...69 ViewSonic Corporation Confidential Do Not Copy VX900 2 7 Explode Diagram...
Page 64: ...Sechmatic Daigrams 6 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 65: ...72 ViewSonic Corporation Confidential Do Not Copy VX900 2...
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Page 69: ...76 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 70: ...PCB Layout 77 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 71: ...78 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 72: ...79 ViewSonic Corporation Confidential Do Not Copy VX900 2...