Filter
Top Products
Part No. 1118395 11
®
SECTION 1GENERAL GUIDELINES
GENERAL GUIDELINES
ELECTROMAGNETIC INTERFERENCE
EMI WARNINGS
CAUTION: IT IS VERY IMPORTANT THAT YOU READ THIS
INFORMATION REGARDING THE POSSIBLE EFFECTS OF
ELECTROMAGNETIC INTERFERENCE ON YOUR POWERED
SCOOTER.
ELECTROMAGNETIC INTERFERENCE (EMI) FROM RADIO WAVE
SOURCES
Powered 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 the powered scooter to release its brakes,
move by itself, or move in unintended directions. It can also permanently
damage the powered scooter's control system. The intensity of the
interfering EM energy can be measured in volts per meter (V/m). Each
powered scooter can resist EMI up to a certain intensity. This is called its
"immunity level". The higher the immunity level, the greater the
protection. At this time, current technology is capable of achieving at least
a 20 V/m immunity level, which would provide useful protection from the
more common sources of radiated EMI.
There are a number of sources of relatively intense electromagnetic fields
in the everyday environment. Some of these sources are obvious and easy
to avoid. Others are not apparent and exposure is unavoidable. However,
we believe that by following the warnings listed, your risk to EMI will be
minimized.
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, "walkie talkie," security, 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; and
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, 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 your powered scooter.
WEIGHT LIMITATION
WARNING
The weight limitation for the Invacare Buzz is 300 lbs.
If so equipped, the front basket is rated for a maximum loading capacity of
10 lbs.