I I I . E M I / R F I

Laboratory tests performed by the Food and DrugAdministration (FDA) have shown that radio waves can cause unintended motion of power chairs. Radio waves are a form of electromagnetic energy. When this energy ad- versely affects the operation of an electronic device, it is called Electromagnetic Interference (EMI) or Radio

Frequency Interference (RFI).

WARNING! Radio waves may interfere with the control of power chairs.

EMI/RFI—FREQUENTLY ASKED QUESTIONS (FAQS)

The following FAQs summarize what you should know about EMI/RFI. Use this information to minimize the risk that EMI/RFI will affect your power chair.

Where do radio waves come from?

Radio waves are emitted from the antennas of cellular phones, mobile two-way radios (such as walkie-talkies), radio stations, TV stations, amateur radio (HAM) transmitters, wireless computer links, microwave sources, and paging transmitters. Radio waves are a form of electromagnetic energy (EM). Because electromagnetic energy is more intense closer to the transmitting antenna (source of emission), the EM fields from two-way radios are of special concern to power chair users.

If my power chair is affected by EMI/RFI, what kind of motion should I expect? This is hard to predict. It would depend on a number of factors:

νStrength of the radio waves

νConstruction of the power chair

νPosition of the power chair (whether it is on level ground or on an incline)

νWhether or not the power chair is in motion

An affected power chair’s movement can be erratic. It may move by itself or come to a sudden stop. Furthermore, it is possible for EMI/RFI to unexpectedly release the brakes on a power chair. Some intense sources of EMI/RFI can even damage the control system of the Jazzy.

Is there any way to know for sure whether radio waves are responsible for the unintended motion of my power chair?

Unfortunately, interference from radio wave sources may be difficult to recognize, since the signals from these sources are invisible and may be intermittent. However, the FDA recommends that you report all incidents of unintended motion or brake release to the power chair manufacturer and, if possible, note whether there was a radio wave source nearby at the time of the incident.

Has anyone been hurt from erratic, unintended motion of power chairs?

The FDAhas reports of injuries that resulted from the apparent uncontrolled motion of power chairs. However, it is unclear how many of these incidents were actually caused by radio wave interference.

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Jazzy 1143/RevK/Feb03

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Pride Mobility Jazzy 1143 I . E M I / R F, EMI/RFI-FREQUENTLY Asked Questions Faqs, Where do radio waves come from?
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Jazzy 1143 specifications

The Pride Mobility Jazzy 1143 is a well-designed power wheelchair that blends comfort, performance, and maneuverability. Specifically engineered for indoor and outdoor use, it offers users a unique balance of features that enhances mobility and independence.

One of the standout characteristics of the Jazzy 1143 is its compact design, allowing users to navigate tight spaces effortlessly. Its tight turning radius makes it ideal for indoor settings, whether it be at home, in an office, or in public spaces. This model boasts a sturdy build while remaining lightweight, which is essential for user safety and ease of transport.

The Jazzy 1143 is powered by two durable 12-volt batteries that deliver a long driving range. This ensures users can enjoy extended outings without the frequent concern of battery life. Designed with a top speed of up to 4 miles per hour, it allows users to maintain a steady pace while ensuring they do not compromise safety.

Another critical feature of the Jazzy 1143 is its innovative mid-wheel drive technology. This configuration enhances stability and allows for optimal traction, especially on varied terrains. With a full suspension system that absorbs shocks and bumps, users can experience a comfortable ride regardless of the surface.

The seat on the Jazzy 1143 is designed for ultimate comfort, with customizable options, including armrest height, seat depth, and seat height. The adjustable seat ensures that users can find the perfect fit for their physical needs, enhancing comfort for longer use.

In terms of durability, the Jazzy 1143 features a heavy-duty frame that is built to withstand the rigors of everyday use. The anti-tip wheels enhance security while operating, reducing the risk of tip-over incidents.

Technologically, the Jazzy 1143 is equipped with a user-friendly joystick control that enables effortless navigation. The easy-to-read battery gauge informs users of their battery status, allowing for better planning during outings.

Overall, the Pride Mobility Jazzy 1143 is an excellent choice for those seeking a dependable, feature-rich power wheelchair. With its unique combination of maneuverability, comfort, and technology, it empowers users to maintain their independence while enjoying a dynamic lifestyle. Whether for daily errands or social engagements, the Jazzy 1143 offers the reliability and performance users deserve.
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