Foldawheel PW-999UL User Manual - Page 13

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The s ources o f r adiated E MI c an b e b roadly c lassiﬁed i nto t hree t ypes :

1.  Hand-‐held p ortable t ransceivers ( t ransmiXer-‐receivers w ith t he a ntenna

mounted d irectly o n t he t ransmicng u nit. E xamples i nclude: c i2zen

band ( CB) r adios, " walkie t alkie", s ecurity, ﬁ re, a nd p olice t ransceivers,

cellular t elephones a nd o ther p ersonal c ommunica2on d evices.

AXen2on : S ome c ellular t elephones t ransmit s ignals w hile t hey a re O N,

even w hen n ot b eing u

2.  Medium-‐range m obile t ransceivers, s uch a s t hose u sed i n p olice c ars, ﬁ re

trucks, a mbulances a nd t axis. T hese u sually h ave t he a ntenna m ounted

on t he o utside o f t he p ower w heelchair.

3.  Long-‐range t ransmiXers a nd t ransceivers, s uch a s c ommercial b roadcast

transmiXers ( radio a nd T V b roadcast a ntenna t owers) a nd a mateur

(HAM) r adios.

AXen2on : O ther t ypes o f h and-‐held d evices, s uch a s c ordless p hones,

laptop c omputers, A M/FM r adios, T V s ets, C D p layers, c asseXe a nd s mall

appliances s uch a s e lectric s havers a nd h air d ryers a re n ot l ikely t o c ause

EMI p roblems t o y our p ower w heelchair.

v  Power W heelchair E lectromagneVc I nterference ( EMI)

Because E M e nergy r apidly b ecomes m ore i ntense a s o ne m oves c loser t o

the t ransmicng a ntenna ( source), t he E M ﬁ elds f rom h and-‐held r adio w ave

sources ( transceivers) a re o f s pecial c oncern. I t i s p ossible t o u ninten2onally

bring h igh l evels o f E M e nergy v ery c lose t o t he p ower c ontrol s ystem o f t he

power w heelchair w hile u sing t hese d evices. T his c an a ﬀect t he p ower

wheelchair m ovement a nd b raking. T herefore, t he w arnings l isted b elow

are r ecommended t o p revent p ossible i nterference w ith t he c ontrol s ystem

of t he p ower w heelchair.

v  Warnings

Electromagne2c i nterference ( EMI) f rom s ources s uch a s r adio a nd T V

sta2ons, a mateur r adio ( HAM) t ransmiXers, t wo-‐way r adio, a nd c ellular

phones c an a ﬀect p ower w heelchairs a nd m otorized p ower w heelchairs.

Following t he w arnings l isted b elow s hould r educe t he c hance o f

unintended b rake r elease o r p ower w heelchair m ovement w hich c ould

result i n s erious i njury.

1.  Do n ot o perate h and-‐held t ransceivers-‐receivers, s uch a s c i2zen b and

(CB) r adios, o r t urn O N p ersonal c ommunica2on d evices s uch a s

cellular p hones, w hile t he p ower w heelchair i s t urned O N.

sed.

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