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Quantum Dynamo ATS RevE/May03
EMI/RFI
EMI/RFI
Laboratory tests performed by the Food and Drug Administration (FDA) have shown that radio waves can cause unintended
motion of electric mobility vehicles. Radio waves are a form of electromagnetic energy (EM). When this energy unintentionally
affects the operation of an electronic device, it is called
Electromagnetic Interference (EMI) or Radio Frequency Interference
(RFI)
.
WARNING! Radio waves may interfere with the control of power chairs.
FREQUENTLY ASKED QUESTIONS (FAQS)
The following FAQs summarize what you should know about EMI/RFI. Use this information to minimize the risk that EMI/RFI
may affect your power chair.
WHERE DO RADIO WAVES COME FROM?
Radio waves are emitted from the antennas of cellular phones, mobile two-way radios, walkie-talkies, radio stations, TV
stations, amateur radio (HAM) transmitters, wireless computer links, microwave sources, and paging transmitters. Radio
waves are a form of electromagnetic energy (EM). EM is more intense closer to transmitting antennas, which are sources of
emission. The greater the transmission strength, the greater the concern to electric mobility vehicle users.
IF MY POWER CHAIR IS AFFECTED BY EMI/RFI, WHAT KIND OF MOTION SHOULD I EXPECT?
This is hard to predict. The effect may depend on a number of factors including:
l
Strength of the radio waves
l
Construction of the power chair
l
Position of the power chair (whether it is on level ground or on a slope)
l
Whether or not the power chair is in motion
Preventing Unintended movement
WARNING! If you anticipate being seated in a stationary position for an extended period of time, turn off the
power. This will prevent unexpected motion from inadvertent joystick contact. This will also eliminate the pos-
sibility of unintended chair movement from electromagnetic (EM) sources. Failure to do so may result in per-
sonal injury.
Prescription Drugs/Physical Limitations
Users must exercise care and common sense when operating a power chair. This includes awareness of safety issues when
taking prescribed or over-the-counter drugs or when the user has specific physical limitations.
WARNING! Consult your physician if you are taking prescribed or over-the-counter medication or if you have
certain physical limitations. Some medications and limitations may impair your ability to operate your power
chair in a safe manner.
Alcohol
The power chair user must exercise care and common sense when operating his/her power chair. This includes awareness of
safety issues while under the influence of alcohol.
WARNING! Do not operate your power chair while you are under the influence of alcohol, as this may impair
your ability to operate your power chair in a safe manner.
Removable Parts
WARNING! Do not attempt to lift or move a power chair by any of its removable parts. Personal injury and/or
damage to the power chair may result.
Summary of Contents for Dynamo ATS
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