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SERVSWITCH™ JR.
4.1.3 M
ONITOR
The ServSwitch Jr. is designed to support standard VGA video, including VGA
monochrome (“page white”). It does not support PCs that use CGA, EGA, or
proprietary versions of VGA that depart from the original specifications. Consult
your PC’s manual, and if that doesn’t tell you whether or not the PC uses standard
VGA, consult with the PC’s or the video card’s manufacturer.
The ServSwitch Jr. is also designed to support SVGA, although it doesn’t handle
higher resolutions at longer distances as well without coaxial cabling (see the next
two pages). With coaxial cables, it will also support XGA, RS/6000, and SGI video
(RS/6000 and SGI require cables with 13W3 connectors—see Appendix B).
The ServSwitch Jr. will support SVGA (Super VGA) video, but with original Serv
cables the video quality can decrease at higher resolutions and distances. Table 4-1,
below, illustrates this. The distances in the table are total cable lengths measured
from the CPU to the monitor.
Table 4-1. Video Quality vs. Distance for Original Serv Cables
Resolution
Distance
5' (1.5 m) 10' (3 m) 15' (4.6 m) 20' (6.1 m)
25' (7.6 m)
640 x 480 333 3 3
800 x 600 noninterlaced 3333 2
1024 x 768 interlaced 333 2 2
1024 x 768 noninterlaced 3322 2
1280 x 1024 interlaced 322 2 1
1280 x 1024 noninterlaced 222 1 1
1600 x 1280 noninterlaced 221 1 1
Quality 3 = Near perfect; screen defects are not conspicuous
Quality 2 = Good to very good; images are clear; there are small reflections around
text lettering depending on the color; screen defects are sometimes conspicuous
Quality 1 = Fair to poor as distance increases; images run from slightly fuzzy to
badly smeared; text runs from fuzzy but readable to completely washed out
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