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Technical Information
Regarding EMI
Important Technical Information regarding
Electromagnetic Interference (EMI)
The intensity of interference from electromagnetic
energy is measured in volts per meter (v/m), which
refers to the strength of the electrical source (volt-
age) as it relates to the distance away from the
object being considered (in meters). Resistance
of a scooter/wheelchair to certain EMI intensity is
commonly called its “immunity level”. 20 volts/meter
is a generally achievable and useful immunity level
against interference from radio wave sources (the
higher the immunity level, the greater protection).
Your Powerchair has been tested and found
to meet the required immunity level from
Electromagnetic Interference (20v/m): the recom-
mended density of interference from electromagnet-
ic energy.
• Do not operate devices such as CB radios or
mobile phones while the vehicle is switched on.
• Avoid getting close to transmitter masts, such as
television and radio masts.
• Note you may experience interference when close
to ambulance or fire stations.
If your vehicle starts to operate by itself switch it off
and report this to your Dealer.
Warning! Even with the immunity level of 20
volts/meter, certain precautions must be
followed to ensure your scooter/wheelchair
will not be affected by outside electromagnetic
sources.
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