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EMI Warning
Electromagnetic Interface (EMI) From Radio Wave Sources
Powered motorized scooters may be susceptible to electromagnetic interference (EMI), which is
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 a powered scooter to release its brakes, move by itself or move in
unintended directions. It also can permanently damage the powered scooter's control system.
The sources of radiated EMI can be classified broadly into three types:
1.
Hand-held portable transceivers
(transmitters-receivers) with an antenna mounted directly
on the transmitting unit. Examples include: citizens band (CB) radios, "walkie-talkies", 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 antenna towers) and amateur (HAM) radios. **NOTE: So far as we know,
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, are not likely to cause problems to your powered scooter.
Powered 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, unintentionally, to bring high levels of EM energy very close to the powered scooter's
control system while using these devices. This can affect powered scooter movement and braking.
Therefore, the warnings listed below are recommended to prevent possible interference with the
control system of the powered scooter.
Warnings
The warnings listed below should reduce the chance of unintended brake release or powered
scooter movement, which could result in serious injury.
Содержание Shoprider 778S
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