Service manual

2-1 GENERAL SPECIFICATION
Test Resolution & Frequency 1280x1024 @ 60Hz
Test Image Size Full Size
Contrast and Brightness Controls
Factory Default:
Contrast = 50%, Brightness = 100%
2-2 VIDEO INTERFACE
Input Connector 1 (Analog 1) DB-15 (Analog), refer the appendix A
Input Connector 2 (Analog 2) DB-15 (Analog), refer the appendix A
Input Connector 3 (Digital) DVI-D (Digital), refer the appendix B
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
1. Video RGB (Analog)
Separate, Composite, and Sync on Green
2. TMDS (Digital)
Video Impedance 75 Ohms (Analog), 100 Ohms (Digital)
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, Composite Sync, SOG
Video Compatibility
Shall be compatible with all PC type computers,
Macintosh computers, and after market video cards
Resolution Compatibility
640 x 350*
1
, 640 x 480, 720 x 400*
1
(640 x 400*), 800 x
600, 832 x 624, 1024 x 768, 1152 x 864, 1152 x 870*
2
,
1280 x 720, 1280 x 960, 1280 x 1024
*1 The image vertical size might not be full screen.
But the image vertical position should be at the
center.
*2 Under 1152x870@60Hz or 72Hz, the OSD
information
shows on “1152x864”
Exclusions Not compatible with interlaced video
2. Specification
3
ViewSonic Corporation Confidential
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Do Not Copy VP191b/s