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3 . E M I
Attention:
Other types of hand-held devices, such as cordless phones, laptop computers, AM/FM
radios, TV sets, CD player, and 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 power chair .
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POWERED POWER CHAIR 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 closer to the powered s control system
of power chair while using these devices. This can affect powered power chair movement and
braking. Therefore, the warnings listed below are recommended to prevent possible interference with
the control system of the powered power chair .
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WARNINGS
Electromagnetic interference (EMI) from sources such as radio and TV stations, amateur radio
(HAM) transmitters, two-way radios, and cellular phones can affect powered power chair and
motorized power chair. Following the warnings listed below should reduce the chance of unintended
brake release or powered power chair movement which could result in serious injury.
1.
Do not operate hand-held transceivers-receivers, such as citizens band (CB) radios, or turn ON
personal communication devices, such as cellular phones, while the powered power chair is
turned ON;
2.
Be aware of nearby transmitters, such as radio or TV stations, and try to avoid coming close to
them;
3.
If unintended movement or brake release occurs, turn the powered power chair OFF as soon as it is
safe;
4.
Be aware that adding accessories or components, or modifying the powered power chair , may
make it more susceptible to EMI ( Note: There is no easy way to evaluated their effect on the
overall immunity of the powered power chair ).
5.
Report all incidents of unintended movement or brake release to the powered power chair
manufacturer, and note whether there is a source of EMI nearby,
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IMPORTANT INFORMATION
1.
20 Volts per meter ( V/m) is a generally achievable and useful immunity level against EMI ( the
higher the level, the greater the protection);
2.
This product has an immunity level of 20 V/m without any accessories and connected to it.
