ViewSonic VA1930wm-1 Service Manual page 23

3. FACTORY PRESET TIMING TABLE
TIMING
640*350@70Hz
IBM
640*400@70Hz
IBM
720*400@70Hz
640*480@50Hz
VESA
640*480@60Hz
640*480@67Hz
VESA
640*480@72Hz
VESA
640*480@75Hz
VESA
640*480@85Hz
VESA
800*600@56Hz
VESA
800*600@60Hz
VESA
800*600@72Hz
VESA
800*600@75Hz
VESA
800*600@85Hz
MAC
832*624@75Hz
VESA
1024*768@60Hz
VESA
1024*768@70Hz
VESA
1024*768@75Hz
VESA
1024*768@85Hz
1024*768@72Hz
VESA
1152*864@75Hz
MAC
ViewSonic Corporation
F (KHz) Sync
H
F (Hz) Polarity (Dot/Line)
V
31.469 + 800
−
70.086 449
−
31.469 800
70.086 449
+
−
31.469 900
449
70.087 +
−
24.700 800
−
50.000 494
−
31.469 800
−
525
59.940
−
35.000 864
−
66.667 525
−
37.861 832
−
520
72.809
−
37.500 840
−
75.000 500
−
43.269 832
−
85.008 509
35.156 + 1024
56.250 + 625
37.879 + 1056
60.317 + 628
48.077 + 1040
72.188 + 666
46.875 + 1056
75.000 + 625
53.674 + 1048
85.061 + 631
−
49.725 1152
−
74.550 667
−
1344
48.363
−
60.004 806
−
56.476 1328
−
70.069 806
60.023 + 1312
75.029 + 800
68.677 + 1376
84.997 + 808
−
57.700 1360
−
72.125 800
67.500 + 1600
+
75.000 900
−
68.681 1456
Total Active Sync Width
(Dot/Line) (Dot/Line)
640 96
350 2
640 96
400 2
720 108
400 2
640 96
480 2
640 96
480 2
640 64
480 3
640 40
480 3
640 64
480 3
640 56
480 3
800 72
600 2
800 128
600 4
800 120
600 6
800 80
600 3
800 64
600 3
832 64
632 3
1024 136
768 6
1024 136
768 6
1024 96
768 3
1024 96
768 3
1024 136
768 6
1152 128
864 3
1152 128
Confidential - Do Not Copy
20
Back Porch
Pixel Freq.(MHz)
(Dot/Line)
48
25.175
60
48
25.175
35
54
28.322
35
48
19.760
8
40
25.175
25
96
30.240
39
120
31.500
20
120
31.500
16
80
36.000
25
128
36.000
22
88
40.000
23
64
50.000
23
160
49.500
21
152
56.250
27
224
57.283
39
160
65.000
29
144
75.000
29
176
78.750
28
208
94.500
36
144
78.472
26
256
108.000
32
100.000
144
VA1930wm-1