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User Manual - Page 118

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118
Safety Guidelines
radiofrequencyenergy(RF),themeasuresdescribedabovewouldapplytochildren
andteenagersusingwirelessphones.Reducingthetimeofwirelessphoneuseand
increasingthedistancebetweentheuserandtheRFsourcewillreduceRFexposure.
Somegroupssponsoredbyothernationalgovernmentshaveadvisedthatchildrenbe
discouragedfromusingwirelessphonesatall.Forexample,thegovernmentinthe
UnitedKingdomdistributedleafletscontainingsucharecommendationinDecember
2000.Theynotedthatnoevidenceexiststhatusingawirelessphonecausesbrain
tumorsorotherilleffects.Theirrecommendationtolimitwirelessphoneuseby
childrenwasstrictlyprecautionary;itwasnotbasedonscientificevidencethatany
healthhazardexists.
11. What about wireless phone interference with medical
equipment?
Radiofrequencyenergy(RF)fromwirelessphonescaninteractwithsomeelectronic
devices.Forthisreason,theFDAhelpeddevelopadetailedtestmethodto
measureelectromagneticinterference(EMI)ofimplantedcardiacpacemakersand
defibrillatorsfromwirelesstelephones.Thistestmethodisnowpartofastandard
sponsoredbytheAssociationfortheAdvancementofMedicalinstrumentation
(AAMI).Thefinaldraft,ajointeffortbytheFDA,medicaldevicemanufacturers,
andmanyothergroups,wascompletedinlate2000.Thisstandardwillallow
manufacturerstoensurethatcardiacpacemakersanddefibrillatorsaresafefrom
wirelessphoneEMI.TheFDAhastestedhearingaidsforinterferencefromhandheld
wirelessphonesandhelpeddevelopavoluntarystandardsponsoredbytheInstitute
ofElectricalandElectronicEngineers(IEEE).Thisstandardspecifiestestmethods
andperformancerequirementsforhearingaidsandwirelessphonessothatno
interferenceoccurswhenapersonusesa‘compatible’phoneanda‘compatible’
hearingaidatthesametime.ThisstandardwasapprovedbytheIEEEin2000.The
FDAcontinuestomonitortheuseofwirelessphonesforpossibleinteractionswith
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