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7
ViewSonic Corporation
Confidential - Do Not Copy
VA1703w-1_VA1703wb-1
5 ELECTRICAL
REQUIREMENT
Horizontal / Vertical Frequency
Horizontal Frequency
24 – 70 kHz
Vertical Refresh Rate
50 – 75 Hz
Maximum Pixel Clock
135 MHz
Sync Polarity
Independent of sync polarity
Timing Table
Analog
Item Timing
Sep
arated
Comp
osite
SOG
Digit
al -
T
M
D
S
Remark
1
640 x 350
@
70 Hz,
31.5 KHz
DMT
2
640 x 400
@
60 Hz,
31.5 KHz
3
640 x 400
@
70 Hz,
31.5 KHz
4
640 x 480
@
50 Hz,
24.7 KHz
5
640 x 480
@
60 Hz,
31.5 KHz
DMT
6
640 x 480
@
67 Hz,
35 KHz
For MAC
7
640 x 480
@
72 Hz,
37.9 KHz
DMT
8
640 x 480
@
75 Hz,
37.5 KHz
DMT
9
720 x 400
@
70 Hz,
31.5 KHz
10
720 x 480
@
60 Hz,
31.5 KHz
DTV
11
720 x 576
@
50 Hz,
31.3 KHz
DTV
12
800 x 600
@
56 Hz,
35.1 KHz
DMT
13
800 x 600
@
60 Hz,
37.9 KHz
DMT
14
800 x 600
@
72 Hz,
48.1 KHz
DMT
15
800 x 600
@
75 Hz,
46.9 KHz
DMT
16
832 x 624
@
75 Hz,
49.7 KHz
MAC
17
1024 x 768 @
50 Hz,
39.6 KHz
18
1024 x 768 @
60 Hz,
48.4 KHz
DMT
19
1024 x 768 @
70 Hz,
56.5 KHz
DMT
21
1024 x 768 @
75 Hz,
60 KHz
DMT
23
1152 x 864 @
75 Hz,
67.5 KHz
DMT
24
1152 x 870 @
75 Hz,
68.7 KHz
For MAC
25
1152 x 900 @
67 Hz,
62.5 KHz
For SUN
26
1280 x 720 @
50 Hz,
37.5 KHz
DTV
27
1280 x 720 @
60 Hz,
45 KHz
DTV
28
1280 x 768 @
50 Hz,
39.6 KHz
29
1280 x 768 @
60 Hz,
47.8 KHz
DMT;
30
1280 x 768 @
75 Hz,
60.3 KHz
DMT;
31
1280 x 960 @
50 Hz,
49.4 KHz
32
1280 x 960 @
60 Hz,
59.7 KHz
DMT
33
1280 x 960 @
75 Hz,
75.2 KHz
34
1280 x 1024 @
50 Hz,
52.7 KHz
35
1280 x 1024 @
60 Hz,
64 KHz
DMT
36
1280 x 1024 @
75 Hz,
80 KHz
DMT
37
1440 x 900 @
60 Hz
55.9 KHz
DMT
38
1440 x 900 @
75 HZ
70.6 KHz
DMT
*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 85Hz mode might be worse than 75Hz.
*4. The image quality 1280x960@75HZ and 1280x1024@75Hz mode might be worse than other mode.