activecare medical Wildcat 450 소유자 매뉴얼 - 페이지 5

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For service assistance, please call your authorized ActiveCare dealer.

Eletromagnetic Interference (EMI)

This portion of the manual will provide the user with basic information about the problems with

EMI (electromagnetic interference), protective measures can be used to either lessen the

possibility of exposure or to minimize the degree of exposure; this section also shows some

conditions that unexpected or erratic movements may cause.

◊

Caution

It is very important that you read this information regarding the possible effects

of electromagnetic interference on your electric ActiveCare power wheelchair.

ELECTROMAGNETIC

SOURCES

Power wheelchairs may be susceptible to electromagnetic interference (EMI), which is

interfering electromagnetic energy (EM) emitted from sources such as radio stations, TV

stations, amateur radio (HAM) transmitters, two-way radios, and cellular phones. The

interference (from radio wave sources) can cause the power wheelchair to release its brakes,

move by itself, or move in unintended directions. It can also permanently damage the power

wheelchair's control system. The intensity of the interfering EM energy can be measured in

volts per meter (V/m). Each power wheelchair can resist EMI up to a certain intensity level.

The higher the immunity level the greater the protection. At this time, current technology is

capable of achieving at least a 20 V/m immunity level, which would provide useful protection

from the more common sources of radiated EMI. This power wheelchair model as shipped,

with no further modification, has an immunity level of 20 V/m without any accessories.

There are a number of sources of relatively intense electromagnetic fields in the everyday

environment. Some of these sources are obvious and easy to avoid. Others are not apparent

and exposure is unavoidable. However, we believe that by following the warning listed below,

your risk to EMI will be minimized.

The sources of radiated EMI can be broadly classified into three types:

Hand-held portable transceivers (transmitter-receivers with the antenna mounted directly

on the transmitting unit). Examples include: citizens band (CB) or hand held radios,

(security, fire, and police transceivers), cellular telephones and other personal

communication devices.

NOTE: Some cellular telephones transmit a signal while they are ON but not being used.

Medium-range mobile transceivers, such as those used in police cars, fire trucks,

ambulances and taxis usually have the antenna mounted on the outside of the

wheelchair.

Wildcat/Wildcat 450 Owner's Manual

INTERFERENCE

(EMI)

FROM

RADIO

WAVE