Invacare Xterra GT Operating And Maintenance Manual page 16

SECTION 1
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 below, 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 wheelchair.
Powered Wheelchair 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 powered
wheelchair's control system while using these devices. This can affect
powered wheelchair movement and braking. Therefore, the warnings listed
below are recommended to prevent possible interference with the control
system of the powered wheelchair.
Electromagnetic interference (EMI) from sources such as radio and TV
stations, amateur radio (HAM) transmitters, two-way radios, and cellular
phones can affect powered wheelchairs and motorized scooters. Following
the warnings listed below should reduce the chance of unintended brake
release or powered wheelchair movement which could result in serious
injury.
1) Do not operate hand-held transceivers (transmitters receivers), such
as citizens band (CB) radios, or turn ON personal communication
devices, such as cellular phones, while the powered wheelchair is
turned ON;
Xterra™GT™
WARNING
16
GENERAL GUIDELINES
Part No. 1106627