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CHAPTER 8: Troubleshooting
Can extenders be daisychained to allow operation across a distance greater than 1000 ft.
(304.8 meters)?
Though we do not recommend doing so, you can chain two extenders in order to
operate over longer distances. Using cascaded extenders (CPU→Local Unit 1→
Remote Unit 1→Local Unit 2→Remote Unit 2→monitor, keyboard, and mouse),
SVGA operation over 1640 ft. (499.9 m) and standard VGA operation over
2000 ft.
(609.6 m) is theoretically possible, though not guaranteed. In general, the first
CAT5
cable segment (the one between the first Extender’s Local and Remote Units)
should
be approximately 655 ft. (200 m) long and the remaining distance should
be covered by the
second segment (the one between the second extender’s Local
and Remote Units).
Such applications require careful setup of the video equalizers. If
you plan to cascade
extenders, please contact Black Box Technical Support to
discuss your application.
Can the extender be used between buildings?
No. Ground loops could destroy the extender and attached equipment.
Can I use multiple Local or Remote Units by swapping interconnect cables or switching the
interconnect link?
Because the extender performs full keyboard and mouse emulation, it is possible
to swap or switch the Local-Remote interconnection to create, in effect, a KVM
matrix-switch system; you would just have to remember to always reset the active
Remote Unit (and, if it’s a Dual-Access model, the Local Unit; see Section 7.2)
after each such swap or switch. Please call Black Box Technical Support to discuss
your application before deploying such a system.
Can the extender be used with RGB video or video with separate composite sync?
As long as the video has sync on green (the composite sync signal superimposed on
the green color signal), there should be no problem. The extender natively
supports composite sync.
Which cable type is better: UTP (unshielded twisted pair) or STP (shielded twisted pair)?
In electrically quiet environments, UTP cable will give the best quality video over
long distances because it has less capacitance per unit length. However, STP is
usually better in electrically noisy environments, because it resists interference
more strongly.
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