ViewSonic VP720B Service Manual - Page 25

Contrast of each R, G, B

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17. 800 x 600 @ 85Hz, 53.7kHz 18. 832 x 624 @ 75Hz, 49.7kHz 19. 1024 x 768 @ 60Hz, 48.4kHz 20. 1024 x 768 @ 70Hz, 56.5kHz 21. 1024 x 768 @ 72Hz, 58.1kHz 22. 1024 x 768 @ 75Hz, 60.2kHz 23. 1024 x 768 @ 85Hz, 68.67kHz 24. 1152 x 864 @ 75Hz, 67.5kHz 25. 1152 x 870 @ 75Hz, 68.7kHz 26. 1280 x 720 @ 50Hz, 37.5kHz 27. 1280 x 720 @ 60Hz, 45kHz 28. 1280 x 768 @ 50Hz, 39.6kHz 29. 1280 x 768 @ 60Hz, 47.8kHz 30. 1280 x 768 @ 75Hz, 60.3kHz 31. 1280 x 768 @ 85Hz, 68.6kHz 32. 1280 x 960 @ 50Hz, 49.4kHz 33. 1280 x 960 @ 60Hz, 59.7kHz 34. 1280 x 960 @ 75Hz, 75.2kHz 35. 1280 x 1024 @ 60Hz, 63.4kHz 36. 1280 x 1024 @ 75Hz, 79.97kHz 800 x 600 @ 85Hz, 53.7kHz 832 x 624 @ 75Hz, 49.7kHz 1024 x 768 @ 60Hz, 48.4kHz 1024 x 768 @ 70Hz, 56.5kHz 1024 x 768 @ 72Hz, 58.1kHz 1024 x 768 @ 75Hz, 60.2kHz 1024 x 768 @ 85Hz, 68.67kHz 1152 x 864 @ 75Hz, 67.5kHz 1152 x 870 @ 75Hz, 68.7kHz 1280 x 720 @ 50Hz, 37.5kHz 1280 x 720 @ 60Hz, 45kHz 1280 x 768 @ 50Hz, 39.6kHz 1280 x 768 @ 60Hz, 47.8kHz 1280 x 768 @ 75Hz, 60.3kHz 1280 x 768 @ 85Hz, 68.6kHz 1280 x 960 @ 50Hz, 49.4kHz 1280 x 960 @ 60Hz, 59.7kHz 1280 x 960 @ 75Hz, 75.2kHz 1280 x 1024 @ 60Hz, 63.4kHz 1280 x 1024 @ 75Hz, 79.97kHz 1.4.2 Function Test Display Pattern Item Test Content Pattern Specification Remark 1 Frequency & Tracking Fine Line Moire Eliminate visual wavy Figure 1 noise. 2 Contrast/Brightness 16 Gray Scale 16 gray levels should be Figure 2 distinguishable. 3 Boundary Horizontal & Horizontal and Vertical Figure 3 Vertical Thickness position of video should be adjustable to be within the screen frame. 4 RGB Color RGB Color Contrast of each R, G, B, Figure 4, 5, Performance Intensities color should be normal. 6 5 Screen Uniformity & Full White Should be compliant with Figure 7 Flicker the spec. 6 Dead Pixel/Line White Screen & The numbers of dead Figure 7, 8 Dark Screen pixels should be compliant with the spec. 7 White Balance White & Black The screen must have the Figure 9 Pattern pure white and black pattern, no other color. ViewSonic Corporation Confidential - Do Not Copy 22 VP720-1_VP720b-1

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17. 800 x 600 @ 85Hz, 53.7kHz
18. 832 x 624 @ 75Hz, 49.7kHz
19. 1024 x 768 @ 60Hz, 48.4kHz
20. 1024 x 768 @ 70Hz, 56.5kHz
21. 1024 x 768 @ 72Hz, 58.1kHz
22. 1024 x 768 @ 75Hz, 60.2kHz
23. 1024 x 768 @ 85Hz, 68.67kHz
24. 1152 x 864 @ 75Hz, 67.5kHz
25. 1152 x 870 @ 75Hz, 68.7kHz
26. 1280 x 720 @ 50Hz, 37.5kHz
27. 1280 x 720 @ 60Hz, 45kHz
28. 1280 x 768 @ 50Hz, 39.6kHz
29. 1280 x 768 @ 60Hz, 47.8kHz
30. 1280 x 768 @ 75Hz, 60.3kHz
31. 1280 x 768 @ 85Hz, 68.6kHz
32. 1280 x 960 @ 50Hz, 49.4kHz
33. 1280 x 960 @ 60Hz, 59.7kHz
34. 1280 x 960 @ 75Hz, 75.2kHz
35. 1280 x 1024 @ 60Hz, 63.4kHz
36. 1280 x 1024 @ 75Hz, 79.97kHz
800 x 600 @ 85Hz, 53.7kHz
832 x 624 @ 75Hz, 49.7kHz
1024 x 768 @ 60Hz, 48.4kHz
1024 x 768 @ 70Hz, 56.5kHz
1024 x 768 @ 72Hz, 58.1kHz
1024 x 768 @ 75Hz, 60.2kHz
1024 x 768 @ 85Hz, 68.67kHz
1152 x 864 @ 75Hz, 67.5kHz
1152 x 870 @ 75Hz, 68.7kHz
1280 x 720 @ 50Hz, 37.5kHz
1280 x 720 @ 60Hz, 45kHz
1280 x 768 @ 50Hz, 39.6kHz
1280 x 768 @ 60Hz, 47.8kHz
1280 x 768 @ 75Hz, 60.3kHz
1280 x 768 @ 85Hz, 68.6kHz
1280 x 960 @ 50Hz, 49.4kHz
1280 x 960 @ 60Hz, 59.7kHz
1280 x 960 @ 75Hz, 75.2kHz
1280 x 1024 @ 60Hz, 63.4kHz
1280 x 1024 @ 75Hz, 79.97kHz
1.4.2
Function Test Display Pattern
Item
Test Content
Pattern
Specification
Remark
1
Frequency & Tracking
Fine Line Moire
Eliminate visual wavy
noise.
Figure 1
2
Contrast/Brightness
16 Gray Scale
16 gray levels should be
distinguishable.
Figure 2
3
Boundary
Horizontal &
Vertical Thickness
Horizontal and Vertical
position of video should be
adjustable to be within the
screen frame.
Figure 3
4
RGB Color
Performance
RGB Color
Intensities
Contrast of each R, G, B,
color should be normal.
Figure 4, 5,
6
5
Screen Uniformity &
Flicker
Full White
Should be compliant with
the spec.
Figure 7
6
Dead Pixel/Line
White Screen &
Dark Screen
The numbers of dead
pixels should be compliant
with the spec.
Figure 7, 8
7
White Balance
White & Black
Pattern
The screen must have the
pure white and black
pattern, no other color.
Figure 9
ViewSonic Corporation
Confidential – Do Not Copy
VP720-1_VP720b-1
22