Evolution Safari Scooters
5
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 contr ol syst 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, ° wal ki -talkie ±, security,
fire and polic
e 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 pol
ice 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 co
ncern.
It is possible to unintentionally bring high levels of EM energy
very close to the scooter ¯s contr ol
system while using these devices. This can affect
scooter movement and braking. Therefore, the
warnings listed below are recommended to prevent poss
ible interference with the control system
of the scooter.