ViewSonic VX2235wm-4, Service Manual

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6
ViewSonic Corporation
Confidential - Do Not Copy
VX2235wm-4
Electrical Requirements
Horizontal / Vertical Frequency
Horizontal Frequency 24 – 82 KHZ
Vertical Refresh Rate 50 – 85 HZ
Maximum Pixel Clock 165 MHz
Sync Polarity Independent of sync polarity
Timing Table
Analog
Item
Timing
Separat
ed
C
omposi
te
SOG
Dig
ital -
TM
DS
Remark
1
640 x 350 @ 70 Hz, 31.5 KHz For SOG sync, OSD will be
720x400@70Hz.
2
640 x 400 @ 60 Hz, 31.5 KHz For SOG sync, switch
640x400@60Hz and
640x480@60Hz by [1]+[2] short
cut key
(primary=640x480@60Hz)
3
640 x 400 @ 70 Hz, 31.5 KHz For Analog sync, OSD will be
640x400@70Hz/720x400@70Hz
.
(Promary=720x400@70Hz)
4
640 x 480 @ 50 Hz, 24.7 KHz
5
640 x 480 @ 60 Hz, 31.5 KHz For SOG sync, switch
640x400@60Hz and
640x480@60Hz by [1]+[2] short
cut key
(primary=640x480@60Hz)
6
640 x 480 @ 67 Hz, 35 KHz
7
640 x 480 @ 72 Hz, 37.9 KHz
8
640 x 480 @ 75 Hz, 37.5 KHz
9
640 x 480 @ 85 Hz, 43.3 KHz
10
720 x 400 @ 70 Hz, 31.5 KHz For Analog sync, OSD will be
640x400@70Hz/720x400@70Hz
.
(Promary=720x400@70Hz)
11
720 x 480 @ 60 Hz, 31.5 KHz
12
720 x 576 @ 50 Hz, 31.3 KHz
13
800 x 600 @ 50 Hz, 24.7 KHz
14
800 x 600 @ 56 Hz, 35.1 KHz
15
800 x 600 @ 60 Hz, 37.9 KHz
16
800 x 600 @ 70 Hz, 43 KHz
17
800 x 600 @ 72 Hz, 48.1 KHz
18
800 x 600 @ 75 Hz, 46.9 KHz
19
800 x 600 @ 85 Hz, 53.7 KHz
20
832 x 624 @ 75 Hz, 49.7 KHz
21
1024 x 768 @ 50 Hz, 39.6 KHz For SOG sync, the Information
OSD will be 1024x768@50Hz,
the OSD content also can be
changed to 1280x768@50Hz by