CHAPTER 4: Operation: Hardware and Keyboard Commands
By contrast, coaxial cables (standard for Sun applications, required for XGA applications, and recommended for most other applications) do much better at maintaining video quality, as shown in Table
Table 4-3. Video Quality vs. Distance for Coaxial Cables
Distance | 10 ft. | 20 ft. | 30 ft. | 50 ft. | 75 ft. | 100 ft. | 150 ft. | 200 ft. |
Resolution | (3 m) | (6.1 m) (9.1 m) | (15.2 m) | (22.9 m) | (30.5 m) | (45.7 m) | (61 m) | |
| ||||||||
640 x 480 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 |
800 x 600 noninterl. | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 |
1024 x 768 interlaced | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 |
1024 x 768 noninterl. | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 1 |
1280 x 1024 interlaced | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 |
1280 x 1024 noninterl. | 3 | 2 | 2 | 1 | 1 | 1 | 1 | 1 |
CAUTION!
Some CPUs can’t drive or receive keyboard and mouse signals across longer runs of coaxial cable. Consult with the manufacturers of your CPUs before installing this cable in lengths greater than 20 ft. (6.1 m).
For
One last note of caution about video: The IBM 9515, 9517, and 9518 monitors that come with some PS/2 systems are not normal VGA monitors and require special cabling in order for video to be correctly sized and synchronized. Call Black Box for technical support if you want to use one of these monitors.
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