9/30/2011
4
EMI WARNING
Electromagnetic Interference (EMI) from Radio Wave Sources
Powered electric chairs may be susceptible to electromagnetic interference,
which is a kind of interfering electromagnetic energy (EM) emitted from sources
such as radio stations, TV stations, amateur radio (HAM) transmitters, two-way
radios and cellular phones. The interference (from radio wave sources) can
cause the power chairs to release its brakes, move by itself or move in
unintended directions. This can also permanently damage the powered chair’s
control system.
The sources of radiated EMI can be broadly classified into three types:
1. Hand-held portable transceivers (transmitters-receivers) with the antenna
mounted directly on the transmitting unit. Examples include: citizens band
(CB) radios, “walkie talkies”, security, fire and police transceivers, cellular
telephones and other personal communication devices
NOTE: Some cellular telephones and similar devices transmit signals
while they are ON, even when not being used.
2. Medium-Range mobile transceivers, such as those used in police cars, fire
trucks, ambulances and taxis. These usually have the antenna mounted
on the outside of the vehicle.
3. Long-Range transmitters and transceivers, such as commercial broadcast
transmitters (radio and TV broadcast antenna towers) and amateur (HAM)
radios.
NOTE: Other types of hand-held devices, such as cordless phones,
laptop computers, AM/FM radios, TV sets, CD players, cassette players
and small appliances such as electric shavers and hair dryers, so far, as
we know, are not likely to cause problems to your Powerchair.
Содержание 6Runner 14HD
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