LG H810 - Page 112

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For Your Safety
M-Ratings:PhonesratedM3orM4meetFCCrequirementsandarelikelytogenerateless
interferencetohearingdevicesthanphonesthatarenotlabeled.M4isthebetter/higherof
thetworatings.
T-Ratings:PhonesratedT3orT4meetFCCrequirementsandarelikelytogenerateless
interferencetohearingdevicesthanphonesthatarenotlabeled.T4isthebetter/higherof
thetworatings.
Hearingdevicesmayalsoberated.Yourhearingdevicemanufacturerorhearinghealth
professionalmayhelpyoufindthisrating.Higherratingsmeanthatthehearingdeviceis
relativelyimmunetointerferencenoise.Thehearingaidandwirelessphoneratingvalues
arethenaddedtogether.Asumof5isconsideredacceptablefornormaluse.Asumof6is
consideredforbestuse.
Intheaboveexample,ifahearingaidmeetstheM2levelratingandthewirelessphone
meetstheM3levelrating,thesumofthetwovaluesequalM5.Thisshouldprovidethe
hearingaiduserwith“normalusage”whileusingtheirhearingaidwiththeparticular
wirelessphone.“Normalusage”inthiscontextisdefinedasasignalqualitythat’s
acceptablefornormaloperation.
TheMmarkisintendedtobesynonymouswiththeUmark.TheTmarkisintendedtobe
synonymouswiththeUTmark.TheMandTmarksarerecommendedbytheAlliancefor
TelecommunicationsIndustriesSolutions(ATIS).TheUandUTmarksarereferencedin
Section20.19oftheFCCRules.TheHACratingandmeasurementprocedurearedescribed
intheAmericanNationalStandardsInstitute(ANSI)C63.19standard.
ToensurethattheHearingAidCompatibilityratingforyourphoneismaintained,secondary
transmitterssuchasBluetoothandWLANcomponentsmustbedisabledduringacall.