ServSwitch User's Manual

CHAPTER 3: Installation and Preconfiguration

The Matrix ServSwitch will support SVGA (Super VGA) video, but with original

Serv cables the video quality can decrease at higher resolutions and distances.

Table 3-2 illustrates this. The distances in the table are total lengths of CPU Cable

and User Cable (but not Expansion Cable) measured from the CPU to the

monitor. The table assumes that one Matrix ServSwitch is between the CPU and

monitor; in a daisychained application with multiple Matrix ServSwitches between

the CPU and monitor, video quality will always be lower.

This table also applies to Mac video in Matrix ServSwitch systems in which the

Mac version of the original Serv type CPU Cable (product code EHN215) has been

installed.

Table 3-2. 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 333 3 2

1024 x 768 interlaced 333 2 2

1024 x 768 noninterlaced 332 2 2

1280 x 1024 interlaced 322 2 1

1280 x 1024 noninterlaced 222 1 1

1600 x 1280 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