Powered Wheelchair Electromagnetic Emissions - Invacare TDX SP User Manual

Invacare® TDX® SP
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.
WARNING!
– DO NOT operate handheld 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;
– Be aware of nearby transmitters, such as radio or TV
stations, and try to avoid coming close to them;
– If unintended movement or brake release occurs, turn
the powered wheelchair OFF as soon as it is safe;
– Be aware that adding accessories or components, or
modifying the powered wheelchair, may make it more
susceptible to EMI (Note: There is no easy way to
evaluate their effect on the overall immunity of the
powered wheelchair); and
– Report all incidents of unintended movement or brake
release to Invacare and note whether there is a source
of EMI nearby.
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WARNING!
Important Information
– 20 volts per meter (V/m) is a generally achievable and
useful immunity level against EMI (as of May 1994) (the
higher the level, the greater the protection);
– This device has been tested to a radiated immunity
level of 20 volts per meter.
– The immunity level of the product is unknown.
– Modification of any kind to the electronics of this
power wheelchair as manufactured by Invacare may
adversely affect the EMI immunity levels.
3.3 Powered Wheelchair Electromagnetic
Emissions
CAUTION!
Risk of Injury or Damage
EMC interference affecting other products may result
in injury or damage.
To avoid impacting the operation and function
of other products:
– Products not specified by Invacare that may be used on
or near the wheelchair may be impacted by emissions
from this product if they have a sensitivity level that
is lower than the recognized standard and provided
by this wheelchair. Refer to the manufacturer
specifications for any electronic device BEFORE use
near this product to determine its level of immunity
and potential risk.
1143190-N-03