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Chapter 10
D82014014B 10/15
The sources of radiated EMI can be broadly classified into three types.
1.
Hand-held portable transceivers (transmitters-receivers) with the
antennas mounted directly to the transmitting unit. Examples include:
Citizen band (CB) radios, “walkie-talkie”, security, fire, and police
transceivers, cellular telephones and other personal communication
devices. Note: some of the above transmit signals even when they
are not being used for communication.
2. Medium range mobile transceivers, such as those used in police cars,
fire trucks, ambulances and taxis. These usually have the antenna
mounted to the outside of the vehicle; and
3.
Long-range transmitters that have the antenna mounted upon
a fixed tower.
Other types of hand-held devices, such as lap-top
computers, AM/FM receivers, TV sets, CD and cassette
players, and small appliances such as electric shavers
and hair dryers, as far as we know, are not likely to
cause problems to your power wheelchair.
Radio Wave sources may affect power wheelchair control.
Radio wave sources, such as radio stations, TV stations, amateur radio
(HAM) transmitters, two-way radios and cellular phones, can affect power
wheelchairs and motorized scooters (in this text, both will be called power
wheelchairs). Following the warnings listed below should reduce the
chance of unintended brake release or power wheelchair movement that
could result in serious injury.
1.
Do not turn on hand-held personal communication devices, such
as citizens band (CB) radios and cellular phones, while the power
wheelchair is turned ON.
2.
Be aware of nearby transmitters, such as radio or TV stations and try
to avoid coming close to them.
3.
If unintended movement or brake release occurs, turn the power
wheelchair OFF as soon as it is safe.
4.
Be aware that adding accessories or components, or modifying
the power wheelchair, may make it more susceptible to interference
from radio wave sources. (Note: There is no easy way to evaluate
their effect on the overall immunity of the power wheelchair); and
Summary of Contents for Teknique HD-6
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