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CHAPTER 7: Troubleshooting
7.2 General Questions About the Extender
Is it possible to use an interconnection cable longer than 300 meters (1000 feet)?
Can Extenders be daisychained to operate across greater distances?
We don’t recommend doing either of these things.
Can the Extender be used between buildings?
No. Ground loops could destroy the Extender and attached equipment.
Can I rackmount the Extender?
The Extender is designed for desktop use. You could set it on a rack shelf, but
there are not currently any rackmount or wallmount kits available for it.
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.
When using UTP, what’s the best way to make sure that the system does not suffer from any
interference?
The Extender is designed to withstand high levels of interference while driving
signals over UTP. To further reduce the potential for interference, consider taking
these actions:
a) Make sure that the Extender’s Remote Unit, any remote KVM switch, and the
local CPU or KVM switch are all connected to the same utility-power (mains)
phase.
b) Make sure that the AC voltage across the utility-power (mains) grounds (at
both the local PC or switch and remote monitor or switch) is less than 2V.
c) Use a “clean earth” or “clean grounding” system (if your site has one
installed).
d) Route the interconnection cable away from generators, motors, compressors,
fluorescent lights, and other cables.
e) Try STP cable if you think noise could be a problem.
This interconnect cable is exactly like the cable I use on my LAN. Can I connect the Extender
to my network?
Absolutely not. Regardless of the cable similarities, the data signals and voltages
used by the Extender are totally different from those used by Ethernet and other
types of networks. Connecting the Extender to a LAN hub, switch, repeater, or other
network device, or exposing it to the signal levels present on network data lines, is
a sure way to blow out the Extender, and could damage attached devices as well.
Summary of Contents for ACU1007A
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