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

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