Black Box KV6104SA-R2, Руководство пользователя

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APPENDIX A: Cable Guidelines
Appendix A: Cable Guidelines
IMPORTANT NOTE
The maximum supported cable lengths vary widely between devices and
cables. It might be possible to use cables that are longer than those
specified in this Appendix with certain computers and peripherals, but
this can’t be guaranteed. If you have problems, try using shorter cables.
A.1 Cabling from the Keyboards, Monitors, and Mice to the ServSwitch Duo/
Quadro or Duo Extender
All of the shared devices plug directly into the relevant ports at the rear of the
ServSwitch Duo/Quadro or on the ServSwitch Duo Extender. If you use a PC/AT
style keyboard you’ll need a PC/AT (5-pin DIN female) to PS/2 (6-pin mini-DIN
male) adapter. (These are available from Black Box as product code FA211.)
You can use Premium KVM User Cables (product code EHN409) to increase the
distance from the Duo/Quadro to your peripherals to as much as 32 ft. (10 m); see
Section 3.4.4 . Many keyboards and mice will operate at distances up to 65 ft.
(20 m), but don’t count on this.
A.2 Cabling from the ServSwitch Duo/Quadro to the CPUs
Video cabling: HD15 male to HD15 male, wired as a standard VGA CPU-to-
monitor cable. There are two types commonly available. The better type, which will
carry video very well, is constructed with a coaxial cable core. The not-so-good
type—cheaper cable more suited for data communication—is often used, but can
degrade video quality, especially over longer distances. Avoid using “data cables”
longer than 6 ft. (2 m) unless video quality is not important in your application.
You might be able to run good coaxial video cables as far as 165 ft. (50 m) with
little loss of video quality, but the longest we recommend going—unless you use a
ServSwitch brand KVM Extender—is 100 ft. (30 m) over the video strand of our
Premium KVM CPU Cables (product code EHN408, see
Section 3.4.4 ). In a
cascaded application,
avoid
running video cabling end-to-end (from user to CPU)
farther than 100 ft. (30 m).
If you want to make use of the ServSwitch Duo’s/Quadro’s ability to pass Display
Data Channel (DDC) information between your CPUs and the monitor, you’ll
need a cable that carries the DDC signaling lines (HD15 pins 12 and 15), which
not all video cables do.