Clear-Com RCV-2, Инструкция по эксплуатации, Страница: 17 / 24

W i r e l e s s I F B / C u e S y s t e m
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MAINTENANCE
TROUBLESHOOTING
The majority of difficulties with Clear-Com wireless systems are not due to
equipment failure. This equipment is fully tested before leaving the factory. In
most instances, problems are due to equipment application. This chapter
describes the most commonly encountered application problems. If you are
having difficulties, please review this information and take any necessary
corrective action before returning the equipment for repair.
BATTERY
The most common problems with the wireless system are those related to
batteries used in the RCV-2 wireless receiver. The low battery light on the
receiver will indicate when it is time to replace the battery. Clear-Com
recommends that only new, fresh Duracell MN1604 or Eveready Energizer No.
522 alkaline batteries be used. Rechargeable cell units (ni cads) commonly sold
are almost always 7.2 volts instead of 9 volts and provide only a fraction of an
hour of operation. The only acceptable rechargeable battery known to
Clear-Com is the Varta, which is a true 9-volt design. Even here, the usable life
will be much less than for a Duracell (usually two to three hours).
Battery contacts in the receivers must be clean and unbroken. It is strongly
recommended that the battery be checked prior to each use. It is also good
practice to try replacing the battery with a fresh unit in the event of any sort of
problem with the system, because a low battery may affect system operation in
subtle ways. When you turn off the power to the UPX-10 transmitter, always
turn off the power to the RCV-2 receiver as well, and remove the earpiece and
headset.
INTERFERENCE
Clear-Com receivers have been specifically designed to reject interference.
However, interfering signals may fall directly on the receiver frequency, making it
impossible to avoid problems completely.
Defective fluorescent lighting fixtures can generate extremely high amounts of
RF energy, which can cause interference. When such a situation exists, the fixture
has become a wideband transmitter and little can be done to the wireless
equipment to correct its problem that will not seriously degrade its performance.
A more serious problem is selection of operating frequencies, which are subject to
interference due to intermodulation. Fortunately, a proper initial selection or a
change of frequencies will almost always correct any such problem. Clear-Com
offers a free computerized frequency-selection service to purchasers of its
equipment. If the frequency of other wireless equipment in the area is known,
interference-free frequencies can be chosen. However, if equipment is added later
• The most commonly
encountered problems
involve the batteries used
in the RCV-2 wireless
receiver.
• It is strongly
recommended that the
battery in the receiver is
checked prior to each
use.
• Always turn off the power
to the RCV-2 when not in
use.
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