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EMC Compliance
All models of Action Trackstander comply with the requirements and test methods for electromagnetic
compatibility of electrically powered wheelchairs including their battery chargers. Testing was performed
to IEC 60601-1-2, ANSI/RESNA WC-2:2009 section 21 testing requirements.
The Action Trackstander has been tested to 20 volts per meter (V/m) in the range of 26 MHz to 1000 MHz
which is the generally acceptable and useful immunity level against EMI at this testing level there was no
EMI phenomena observed.
All power operated wheelchairs have some level of susceptibility to ELECTROMAGNETIC INTERFERENCE
(EMI) FROM RADIO WAVE SOURCES. The Trackstander may be susceptible to electromagnetic
interference (EMI), which is a kind of interfering electromagnetic energy (EM) emitted from sources such
as radio stations, TV stations, amateur radio (HAM) transmitters, two-way radio, and cellular phones. The
interference (from radio wave sources) could cause the Trackstander to release its brakes, move by itself,
or move in unintended directions. This can also permanently damage the Trackstander control system.
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. 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, and
cassette players, and small appliances, such as electric shavers and hair dryers, so far as we know, are not
likely to cause problems to the Trackstander.
Trackstander 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 sources
(transceivers) are of special concern. It is possible to unintentionally bring high levels of EM energy very
close to the Trackstander’s control system while using thes
e devices. This could affect Trackstander
movement and braking. Therefore, the warnings listed below are recommended to prevent possible
interference with the control system.
WARNINGS 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 Trackstander is
turned ON. 2. Be aware of nearby transmitters, such as radio or TV stations, and try to avoid close
contact. 3. If unintended movement or brake release occurs, turn the Trackstander OFF as soon as it is
safe. 4. Be aware that adding accessories or components, or modifying the Trackstander may make it
more susceptible to EMI. NOTE! Like all power wheelchairs, there is no easy way to evaluate the overall
immunity of the Trackstander. 5. Report all incidents of unintended movement or braking and note
whether there are sources of EMI nearby.
Summary of Contents for EAGLE
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