20
“R2” SERVSWITCH
Use only the generic Microsoft mouse driver
MOUSE.COM
, version 4.0 at least and
preferably version 9.01 or higher. If you’re running Windows
®
, this driver must be
loaded in Windows as well as in the base operating system. Do not, on any of your
switched CPUs, run any programs or TSRs, or enter any DOS commands, that
change the settings of the mouse port after the driver has been loaded.
Although the ServSwitch resists minor transient surges that can be caused by
rapidly cycling power, certain keyboards are sensitive to such transients. Since your
shared keyboard’s power is provided by the ServSwitch, wait at least three seconds
after powering down the switch before powering it up again, or the keyboard
might not reset correctly.
The ServSwitch is designed to support IBM PC compatible 101-key keyboards and
IBM PC keyboard-scan modes 1, 2, and 3, and it’s designed to work with
CPUs/keyboards that use 5-pin DIN or 6-pin mini-DIN keyboard connectors. The
ServSwitch might not work properly with keyboards that have proprietary keys or
connectors or use proprietary keyboard-scan modes.
4.1.3 M
ONITOR
NOTE
No keyboard/video switch can provide perfect video. You will see at
least a little fuzziness on your monitor no matter how close to ideal your
ServSwitch system is.
The ServSwitch is designed to support standard VGA video, including VGA
monochrome and VGA “page white.” It does not support PCs that use 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 is also
designed to support CGA video and standard color or monochrome EGA video. It
will support SVGA, although it doesn’t handle higher resolutions or longer
distances very well without coaxial cabling (see the next two pages). With coaxial
cables, it will also support XGA. Lastly, it will also support true monochrome video,
but this requires special cabling; call Black Box for technical support.
NOTE
If you are running a mixed VGA-and-EGA system, you will need VGA
cables and EGA-to-VGA adapters for all your CPUs. You will also need a
multisync monitor capable of synchronizing to a horizontal scan rate of
15.5 to 35 kHz. These can be hard to find. One set of models that fit the
bill is older NEC Multisync II monitors.
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