Emi Warning - Evolution Technologies Safari Sporty3000 User Manual

Evolut ion Sa fa ri Sc oot e rs

EMI WARNING

Evolution Safari scooters may be susceptible to electromagnetic interference (EMI), which is a
kind of interfering electromagnetic energy (EM) emitted from sources such as radio stations, TV
stations, amateur radio (HAM) transmitters, two-way radio, and cellular phones. The interference
(from radio wave sources) can cause the scooter to release its brakes, move by itself, or move in
unintended directions. It can also permanently damage the scooter ¯s con tr o l s yst e m
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, ° w al k i -talkie ± , securit y ,
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, and cassette players, and small appliances, such as electric shavers
and hair dryers, so far as we know, are not likely to cause problems to the scooter.
Scooter Electromagnetic Interference (EMI)
Because EM energy rapidly becomes more intense as one moves closer to the transmitting
antenna (source), the EM fields from hand-held radio sources (transceivers) are of special concern.
It is possible to unintentionally bring high levels of EM energy very close to the scooter ¯s con tr o l
system while using these devices. This can affect scooter movement and braking. Therefore, the
warnings listed below are recommended to prevent possible interference with the control system
of the scooter.
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