Service manual

ViewSonic Corporation Confidential - Do Not Copy VX2245wm-1
8
compliance with ISO 7779 (DIN EN27779:1991) Noise
measurements of machines acoustics. Power Switch noise shall
not be considered.
Power Saving Operation(Method) VESA DPMS Signaling
Mode LED Power Consumption
On Blue 38W (typ)
43W (max)
Active off Amber <1W
Power Consumption
Off Off <1W
Recovery Time On Mode = N/A, Active Off < 3 sec
4-4 ELECTRICAL REQUIREMENT
Horizontal / Vertical Frequency
Horizontal Frequency
24 – 82 kHz
Vertical Refresh Rate
50 – 85* Hz
Maximum Pixel Clock
150 MHz
Sync Polarity
Independent of sync polarity.
Timing Table
Analog
Item
Timing
Separated
Composite
SOG
Digital - TMDS
Remark
1 640 x 350 @ 70 Hz, 31.5 KHz
3 3 3 3
For Analog sync, the image vertical size image will
be not full screen (Still at the center), And the OSD
will be 640x350/640x400/720x400 (primary=
720x400).
2 640 x 350 @ 85 Hz, 37.9 KHz
3 3 3 3
For Analog sync, the image vertical size image will
be not full screen (Still at the center), And the OSD
will be 640x350/640x400/720x400 (primary=
720x400).
3 640 x 400 @ 60 Hz, 31.5 KHz
3 3 3 3
For Analog sync, switch 640x400@60Hz and
640x480@60Hz by [1]+[2] short cut key (primary
= 640x480@60Hz)
4 640 x 400 @ 70 Hz, 31.5 KHz
3 3 3 3
For Analog sync, the image vertical size image will
be not full screen (Still at the center), And the OSD
will be 640x350/640x400/720x400 (primary=
720x400).
5 640 x 400 @ 85 Hz, 37.9 KHz
3 3 3 3
For Analog sync, the image vertical size image will
be not full screen (Still at the center), And the OSD
will be 640x350/640x400/720x400 (primary=
720x400).
6 640 x 480 @ 50 Hz, 24.7 KHz
3 3 3 3
7 640 x 480 @ 60 Hz, 31.5 KHz
3 3 3 3
For Analog sync, switch 640x400@60Hz and
640x480@60Hz by [1]+[2] short cut key (primary
= 640x480@60Hz)
8 640 x 480 @ 67 Hz, 35 KHz
3 3 3 3
9 640 x 480 @ 72 Hz, 37.9 KHz
3 3 3 3
10 640 x 480 @ 75 Hz, 37.5 KHz
3 3 3 3
11 640 x 480 @ 85 Hz, 43.3 KHz
3 3 3 3
12 720 x 400 @ 70 Hz, 31.5 KHz
3 3 3 3
For Analog sync, the image vertical size image will
be not full screen (Still at the center), And the OSD
will be 640x350/640x400/720x400 (primary=
720x400).
13 720 x 400 @ 85 Hz, 37.9 KHz
3 3 3 3
For Analog sync, the image vertical size image will
be not full screen (Still at the center), And the OSD
will be 640x350/640x400/720x400 (primary =
720x400).
14 720 x 480 @ 60 Hz, 31.5 KHz
3 3 3 3
For Analog sync, the image vertical size image will