ViewSonic Corporation
Confidential - Do Not Copy
VG921m-4
10
4-5 ELECTRICAL REQUIREMENT
Horizontal / Vertical Frequency
Horizontal Frequency
24 – 82 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;
Summary of Contents for VG921m-4 VS11369
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Page 48: ...ViewSonic Corporation Confidential Do Not Copy VG921m 4 45 Setp4 3 Check the DDC...
Page 56: ...ViewSonic Corporation Confidential Do Not Copy VG921m 4 53 16 Take off the bezel...
Page 78: ...ViewSonic Corporation Confidential Do Not Copy VG921m 4 75 11 PCB Layout Diagrams...
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