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CAUTION:
IT IS VERY IMPORTANT THAT YOU READ THIS INFORMATION REGARDING
THE POSSIBLE EFFECTS OF ELECTRO MAGNETIC CONTAMINATION
(EMC) ON YOUR MOBILITY SCOOTER. SOMETIMES THIS EFFECT IS ALSO
KNOWN AS ELECTRO MAGNETIC INTERFERENCE (EMI).
EMC (EMI) FROM RADIO-WAVE SOURCES.
Mobility scooters may be susceptible to EMC, which is interference from
electromagnetic energy (EM) emitted from sources such as radio stations, TV
stations, amateur (HAM) radio transmitters, two way radios and mobile phones.
The interference (from radio sources) can cause the mobility scooter to release
its brakes, move by itself or move in an unintended way. Permanent damage can
also be done to the mobility scooter's control system.
The intensity of the interfering EM energy can be measured in volts per meter,
(V/m.).
Each mobility scooter can resist EMC up to a certain intensity.
This is known as the scooter's "immunity level".
The higher the immunity level, the greater the protection.
Current technology offers useful protection of at least 20 V/m. which provides
protection from the more common sources of radiated EMC.
There are a number of relatively strong electromagnetic fields present in the
everyday environment. Most of these sources are obvious and easy to avoid,
others are not so obvious and can be unavoidable.
By following the warnings listed, your risk of exposure to EMC will be minimised.
EMC sources can be broadly classified into three types:
1. Hand-held portable transceivers (transmitter-receivers with on-board
antenna). Examples are Walkie-Talkie, CB Radio, security, emergency
services, Mobile phones. Note that some cellular phones can transmit signals
while they are switched on but not being used.
2. Medium range mobile transmitters such as those used on emergency services
vehicles, taxis etc. These usually have antennae 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.
EMC (EMI) WARNINGS
26
Iss 1.
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