ViewSonic VX710 Service Manual - Page 9

Electrical Requirements, X 1024 - 17

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2.4. ELECTRICAL REQUIREMENTS Horizontal / Vertical Frequency Horizontal Frequency Vertical Refresh Rate Maximum Pixel Clock Sync Polarity 30 - 82 KHZ 50 -85 HZ. 135 MHz Independent of sync polarity. Primary Presets Primary Preset 1280 x 1024 @ 60Hz Look up table timing 1. 640 x 350 @ 70Hz, 31.5kHz 2. 640 x 480 @ 60Hz, 31.5kHz 3. 640 x 480 @ 67Hz, 35.0kHz 4. 640 x 480 @ 75Hz, 37.5kHz 5. 640 x 480 @ 72Hz, 37.9kHz 6. 640 x 480 @ 85Hz, 43.27kHz 7. 720 x 400 @ 70Hz, 31.5kHz 8. 800 x 600 @ 56Hz, 35.1kHz 9. 800 x 600 @ 60Hz, 37.9kHz 10. 800 x 600 @ 75Hz, 46.9kHz 11. 800 x 600 @ 72Hz, 48.1kHz 12. 800 x 600 @ 85Hz, 53.7kHz 13. 832 x 624 @ 75Hz, 49.7kHz 14. 1024 x 768 @ 60Hz, 48.4kHz 15. 1024 x 768 @ 70Hz, 56.5kHz 16. 1024 x 768 @ 72Hz, 58.1kHz 17. 1024 x 768 @ 75Hz, 60.0kHz 18. 1024 x 768 @ 85Hz, 68.67kHz 19. 1280 x 1024 @ 60Hz, 63.4kHz 20. 1280 x 1024 @ 75Hz, 79.97kHz 21. 1280x720 @ 60Hz, 45kHz (HDTV) Changing Modes Maximum Mode Change Blank Time, for image stability. Note: 1) Excluding "Auto Adjust" time 2) Under DOS mode (640 x 350, 720 x 400 & 640 x 400), there is no "Auto Adjust" feature. 3) The monitor needs to do "Auto Adjust" the first time a new mode is detected. Mode Change Image 3 seconds (Max) 1 seconds (Typ) for recognized timings 1-2 seconds (Typ) for unrecognized timing . The image shall blank while the monitor changes modes. ViewSonic Corporation Confidential - Do Not Copy VX710 6

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2.4.
ELECTRICAL REQUIREMENTS
Horizontal / Vertical Frequency
Horizontal Frequency
30 – 8
2
KHZ
Vertical Refresh Rate
50 –85
HZ.
Maximum Pixel Clock
135
MHz
Sync Polarity
Independent of sync polarity.
Primary Presets
Primary Preset
1280 x 1024
@ 60Hz
Look up table timing
<<Analog>>
1.
640 x 350 @ 70Hz, 31.5kHz
2.
640 x 480 @ 60Hz, 31.5kHz
3.
640 x 480 @ 67Hz, 35.0kHz
4.
640 x 480 @ 75Hz, 37.5kHz
5.
640 x 480 @ 72Hz, 37.9kHz
6.
640 x 480 @ 85Hz, 43.27kHz
7.
720 x 400 @ 70Hz, 31.5kHz
8.
800 x 600 @ 56Hz, 35.1kHz
9.
800 x 600 @ 60Hz, 37.9kHz
10.
800 x 600 @ 75Hz, 46.9kHz
11.
800 x 600 @ 72Hz, 48.1kHz
12.
800 x 600 @ 85Hz, 53.7kHz
13.
832 x 624 @ 75Hz, 49.7kHz
14.
1024 x 768 @ 60Hz, 48.4kHz
15.
1024 x 768 @ 70Hz, 56.5kHz
16.
1024 x 768 @ 72Hz, 58.1kHz
17.
1024 x 768 @ 75Hz, 60.0kHz
18.
1024 x 768 @ 85Hz, 68.67kHz
19.
1280 x 1024 @ 60Hz, 63.4kHz
20.
1280 x 1024 @ 75Hz, 79.97kHz
21.
1280x720 @ 60Hz, 45kHz (HDTV)
Changing Modes
Maximum Mode Change Blank
Time,
for
image stability. Note:
1) Excluding “Auto Adjust” time
2) Under DOS mode (640 x 350, 720 x 400 & 640 x
400),
there is no “Auto Adjust” feature.
3) The monitor needs to do “Auto Adjust” the first
time a new mode is detected.
3 seconds (Max)
1 seconds (Typ) for recognized timings
1-2 seconds (Typ) for unrecognized timing
.
Mode Change Image
The image shall blank while the monitor changes
modes.
6
ViewSonic Corporation
Co
nfidential
- Do Not Copy
VX710