ViewSonic VA721-2 Service Manual page 32

3. Function test
(1) Test equipment
Color video signal and pattern generator (or PC with SXGV resolution)
(2) Test condition
Before function testing and alignment, the unit must warm up for at least 30 minutes under the
following conditions:
1. Room temperature
2. With full-white screen, RGB, black pattern
3. With cycled display modes
4. Test display modes
Item
1 640 x 350 @ 70Hz, 31.5kHz
2 640 x 400 @ 60Hz, 31.5kHz
3 640 x 400 @ 70Hz, 31.5kHz
4 640 x 480 @ 50Hz, 24.7kHz
5 640 x 480 @ 60Hz, 31.5kHz
6 640 x 480 @ 67Hz, 35.0kHz
7 640 x 480 @ 72Hz, 37.9kHz
8 640 x 480 @ 75Hz, 37.5kHz
9 640 x 480 @ 85Hz, 43.27kHz
10 720 x 400 @ 70Hz, 31.5kHz
11 800 x 600 @ 56Hz, 35.1kHz
12 800 x 600 @ 60Hz, 37.9kHz
13 800 x 600 @ 75Hz, 46.9kHz
14 800 x 600 @ 72Hz, 48.1kHz
15 800 x 600 @ 85Hz, 53.7kHz
16 832 x 624 @ 75Hz, 49.7kHz
17 1024 x 768 @ 60Hz, 48.4kHz
18 1024 x 768 @ 70Hz, 56.5kHz
19 1024 x 768 @ 72Hz, 58.1kHz
20 1024 x 768 @ 75Hz, 60.0kHz
21 1024 x 768 @ 85Hz, 68.67kHz
22 1152 x 864 @ 75Hz, 67.5kHz
23 1152 x 870 @ 75Hz, 68.7kHz
24 1280 x 1024 @ 60Hz, 63.4kHz
25 1280 x 1024 @ 75Hz, 79.97kHz
26 1280x 720 @ 60Hz, 45kHz (HDTV)
ViewSonic Corporation
Timing
Confidential - Do Not Copy
29
Analog
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
VA721-2