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Support Timing; Factory Preset Timing Table - Acer AL1921 Service Manual

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Supported Timing
FH(KHZ)/
TIMING
FV(HZ)
640x350
37.9/70
/DOS
31.5/59.9
640x480
37.9/72.8
VGA
37.5/75
35.2/56.3
800x600
37.9/60.3
SVGA
48.1/72.2
46.9/75
48.4/60.0
1024x768
XGA
56.5/70.1
60/75
1280x1024
63.98/60.02
SXGA
79.98/75.03

Factory Preset Timing Table

STANDARD
RESOLUTION
VGA
SVGA
XGA
Note: the IBM modes and Mac modes not in table, please refer to the spec!
SYNC
TOTAL
POLARITY
(DOT/LINE)
+
800
-
800
-
800
-
840
+
1024
+
1056
+
1040
+
1056
-
1344
-
1328
+
1312
+
1688
+
1688
FREQUENCY (kHz)
720 x 400
640 × 480
31.47
640 × 480
35.00
640 × 480
37.50
640 × 480
37.861
800 × 600
35.156
800 × 600
37.879
800 × 600
48.077
800 × 600
46.875
832 x 624
1024 × 768
48.363
1024 × 768
56.476
1024 x 768
1024 × 768
SYNC
ACTIVE
WIDTH
(DOT/LINE)
(DOT/LINE)
449
525
520
500
625
628
128
666
120
625
806
136
806
136
800
1066
112
1066
144
HORIZONTAL
31.47
49.725
60.24
60.02
14
FRONT
PORCH
(DOT/LINE)
(DOT/LINE)
64
32
96
8
40
16
64
16
72
24
40
56
80
16
24
24
96
16
48
16
VERTICAL
FREQUENCY (Hz)
70.0
60.0
66.6
75.0
72.8
56.3
60.0
72.2
75.0
75.0
60.0
70.0
74.9
75.0
BACK
PIXEL
PORCH
FOREQ.
(MHZ)
96
25.175
40
25.175
120
31.5
120
31.5
128
36.0
88
40.0
64
50.0
160
49.0
160
60.0
144
70.0
176
75.0
248
108
248
135

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