EasyTravel – ET1B
User’s Manual
Rev. 0708
20
The sources of radiated EMI can be broadly classified into three types:
1)
Hand-held portable transceivers
(transmitters-receivers) with the an-
tenna mounted directly on the transmitting unit. Examples include citi-
zens band (CB) radios, "walkie-talkies”, security, fire, and police trans-
ceivers, 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; and
3)
Long-range transmitters and transceivers
, such as commercial broad-
cast 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 EMI problems to motorized scooters.
Motorized 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 wave
sources (transceivers) are of special concern. It is possible to unintentionally
bring high levels of EM energy very close to the motorized scooter’s control
system while using these devices. This can affect the scooter’s movement
and braking. Therefore, the warnings listed below are recommended to pre-
vent possible interference with the control system of your
EasyTravel
.
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