ViewSonic Corporation
Confidential - Do Not Copy
VA902-3_VA902b-3
4
2. Specification
1. General Requirements
General Specifications
Test Resolution & Frequency
“1280 x 1024” @ 60Hz
Test Image Size
Full Size
Contrast and Brightness Controls
Factory Default:
Contrast = 70%, Brightness = 100%
2. Signal Interface
Video Interface
Analog Input Connector
DB-15 (Analog)
Default Input Connector
Defaults to the first detected input
Video Cable Connector DB-15 Pin out
Compliant DDC 1/2B.
Video Signals
1. Video RGB (Analog) Separate Sync
Video Impedance
75 Ohms (Analog), 100 Ohms (Digital)
Exclusions Not
compatible with interlaced video.
3. Power
Power Supply
Input Voltage Range
90 to 264 VAC
Power Dissipation
40 Watts (Typ.)
4. Electrical Requirements
Horizontal / Vertical Frequency
Horizontal Frequency
30 – 80 KHz
Vertical Refresh Rate
50 – 75 Hz
* For resolution 1280 x 1024, the vertical
Refresh rate up to 75 Hz; for there rest
Resolutions, the vertical refresh rate up
To 75Hz.
Maximum Pixel Clock
135 MHz.
Sync Polarity
Independent of sync polarity.
Timing Table
Item Timing
Analog
1
640 x 350 @ 70Hz, 31.5kHz
Yes
2
640 x 400 @ 60Hz, 31.5kHz
Yes
3
640 x 400 @ 70Hz, 31.5kHz
Yes
4
640 x 480 @ 50Hz, 24.7kHz
Yes
5
640 x 480 @ 60Hz, 31.5kHz
Yes
6
640 x 480 @ 67Hz, 35.0kHz
Yes
7
640 x 480 @ 72Hz, 37.9kHz
Yes
8
640 x 480 @ 75Hz, 37.5kHz
Yes
9
640 x 480 @ 85Hz, 43.27kHz
Yes
10
720 x 400 @ 70Hz, 31.5kHz
Yes
11
800 x 600 @ 56Hz, 35.1kHz
Yes
12
800 x 600 @ 60Hz, 37.9kHz
Yes
13
800 x 600 @ 75Hz, 46.9kHz
Yes
14
800 x 600 @ 72Hz, 48.1kHz
Yes
15
800 x 600 @ 85Hz, 53.7kHz
Yes
16
832 x 624 @ 75Hz, 49.7kHz
Yes
17
1024 x 768 @ 60Hz, 48.4kHz
Yes
18
1024 x 768 @ 70Hz, 56.5kHz
Yes
19
1024 x 768 @ 72Hz, 58.1kHz
No
20
1024 x 768 @ 75Hz, 60.0kHz
Yes
21
1024 x 768 @ 85Hz, 68.67kHz
Yes
22
1152 x 864 @ 75Hz, 67.5kHz
No
Summary of Contents for VA902-3
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