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ELECTRICAL REQUIREMENT
Horizontal / Vertical Frequency
Horizontal Frequency
Vertical Refresh Rate
Maximum Pixel Clock
Sync Polarity
Timing Table
Item
1
640 x 350 @
2
640 x 400 @
3
640 x 400 @
640 x 480 @
4
5
640 x 480 @
640 x 480 @
6
7
640 x 480 @
8
640 x 480 @
9
720 x 400 @
10
800 x 600 @
11
800 x 600 @
12
800 x 600 @
13
800 x 600 @
14
832 x 624 @
15
1024 x 768 @
16
1024 x 768 @
17
1024 x 768 @
18
1152 x 864 @
1152 x 870 @
19
20
1280 x 720 @
21
1280 x 1024 @
22
1280 x 1024 @
*1. Tolerance ≧ ±2KHz (if no overlapping issue)
*2. Any timing not in the list, it should display as normal or show on "OUT OF RANGE" OSD message without
blanking.
*3. The image quality of 50Hz mode might be worse than 60Hz.
ViewSonic Corporation
Timing
70 Hz,
31.5 KHz
60 Hz,
31.5 KHz
70 Hz,
31.5 KHz
50 Hz,
24.7 KHz
60 Hz,
31.5 KHz
67 Hz,
35 KHz
72 Hz,
37.9 KHz
75 Hz,
37.5 KHz
70 Hz,
31.5 KHz
56 Hz,
35.1 KHz
60 Hz,
37.9 KHz
72 Hz,
48.1 KHz
75 Hz,
46.9 KHz
75 Hz,
49.7 KHz
60 Hz,
48.4 KHz
70 Hz,
56.5 KHz
75 Hz,
60 KHz
75 Hz,
67.5 KHz
75 Hz,
68.7 KHz
60 Hz,
45 KHz
60 Hz,
64 KHz
75 Hz,
80 KHz
24 – 82 kHz
50 – 75 Hz
135 MHz
Independent of sync polarity
Analog
The image quality might be
worse than 640x480@60Hz
DMT
DMT
DMT
DMT
DMT
DMT
MAC
DMT
DMT
DMT
DMT
For MAC
DTV
DMT
DMT
5
Confidential - Do Not Copy
Remark
VG921m-2
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