VR-5000 OPERATING MANUAL 9
Installation
We recommend that, when using an external DC power supply, you turn the power supply
on, then turn on the VR-5000; when shutting down, turn the VR-5000 off first, then turn
off the power supply.
If the input voltage becomes too low (due to power supply failure or a problem in the DC
cable), the VR-5000’s display will indicate “ERROR LOW VOLTAGE” If this should hap-
pen, check the output voltage from your power supply; if it is OK, then look for a problem
in the DC cable.
Important Notice
Be absolutely certain to observe correct power supply polarity. Our Limited War-
ranty does not cover damage caused by improper power supply voltage or polarity.
ANTENNA CONSIDERATIONS
Antenna performance is critical to successful reception using the VR-5000. Extra time
and care in installing your antenna(s) will reap great benefits for your monitoring station.
Best performance will always be obtained by the use of an outdoor antenna system, in-
stalled as high and in the clear as reasonably possible. Indoor antenna installations gener-
ally suffer from high levels of interference from computers and other electronic devices, as
well as noise generated by fluorescent lights and home appliances.
Because of the wide frequency range of the VR-5000, no single antenna can be expected
to provide optimized performance on all available frequencies. Therefore, separate discus-
sions will address antenna principles for three general categories of antenna frequency
range.
Important Safety Note
Never install an antenna where it (or its supporting mast) could possibly come in
contact with utility power lines, even in a catastrophic wind storm. Such power
lines carry thousands of volts of energy, and you can be killed instantly if the
antenna connected to this product should come in contact with power lines, even
for an instant.
The utilization of the services of a professional antenna-installation company is
highly recommended, if you have any doubts about your ability to install your
antenna system safely.
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