ViewSonic VA1912W Service Manual - Page 7

General Spection, 3 Video Interface - resolution

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2.2 GENERAL SPECTION Test Resolution & Frequency Test Image Size Contrast and Brightness Controls 2.3 VIDEO INTERFACE Analog Input Connector Digital Input Connector Default Input Connector Video Cable Strain Relief Video Cable Connector DB-15 Pin out Video Signals Video Impedance Maximum PC Video Signal Maximum Mac Video Signal Sync Signals DDC 2B Sync Compatibility Video Compatibility Resolution Compatibility Exclusions 1440 x 900 @ 60Hz Full Size Factory Default: Contrast = 70%, Brightness = 100% DB-15 (Analog), refer the appendix A N/A Defaults to the first detected input Equal to twice the weight of the monitor for five minutes Compliant DDC 2B Video RGB (Analog) Separate 75 Ohms (Analog) 950 mV with no damage to monitor 1250 mV with no damage to monitor TTL Compliant with Revision 1.3 Separate Sync Shall be compatible with all PC type computers, Macintosh computers, and after market video cards 640 x 350*, 640 x 480, 720 x 400* (640 x 400*), 800 x 600, 832 x 624, 1024 x 768, 1152 x 864, 1280 x 768, 1280 x 960, 1280 x 1024, 1440 x 900 * The image vertical size might not be full screen. But the image vertical position should be at the center. Not compatible with interlaced video ViewSonic Corporation 4 Confidential - Do Not Copy VA1912w-2_VA1912wb-2

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ViewSonic Corporation
2.2 GENERAL SPECTION
Test Resolution & Frequency
1440 x 900
@ 60Hz
Test Image Size
Full Size
Contrast and Brightness Controls
Factory Default:
Contrast = 70%, Brightness = 100%
2.3 VIDEO INTERFACE
Analog Input Connector
DB-15 (Analog), refer the appendix A
Digital Input Connector
N/A
Default Input Connector
Defaults to the first detected input
Video Cable Strain Relief
Equal to twice the weight of the monitor for five minutes
Video Cable Connector DB-15 Pin out
Compliant DDC 2B
Video Signals
Video RGB (Analog)
Separate
Video Impedance
75 Ohms (Analog)
Maximum PC Video Signal
950 mV with no damage to monitor
Maximum Mac Video Signal
1250 mV with no damage to monitor
Sync Signals
TTL
DDC 2B
Compliant with Revision 1.3
Sync Compatibility
Separate Sync
Video Compatibility
Shall be compatible with all PC type computers,
Macintosh computers, and after market
video cards
Resolution Compatibility
640 x 350*, 640 x 480, 720 x 400* (640 x 400*), 800 x
600, 832 x 624, 1024 x 768, 1152 x 864, 1280 x 768,
1280 x 960, 1280 x 1024, 1440 x 900
* The image vertical size might not be full screen.
But the image vertical position should be at the center.
Exclusions
Not compatible with interlaced video
4
Confidential - Do Not Copy
VA1912w-
2
_VA1912wb-
2