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Home My WebLink AboutAttachment 1 - Electric Meter WorkshopUronKnowledgetoShapeYourFutureCENTRON®MeterTechnicalReferenceGuideEffectiveDate:October2006nitiDci1,LzJ:..------PuttingknOwledgetoworkI Operation:012.19CISD,CIST,andCISLVersionsRFOptions1—AsanoptiontheC12.19D/T/LregistercanbeorderedwithR300CD/CD3functionality.ITheR300CDICD3continuouslytransmitsStandardConsumptionMessages(SCM)andIIntervalDataMessaging(1DM)usingradiofrequencyintheunlicensedfrequencybandL1whichcanbereadbyhandheld,drive-by,orfixednetworksystems.ThetablebelowdescribesthevariousversionsoftheRfoption:OptionSCMERTType1DMERTTypeDescriptionR300CD04N/ATwoERTregisterwithout1DMR300CD30824ThreeERTregisterwith1DMThetransmissionfrequencies,thefrequencyhoppingpattern,andthetimeintervalbetweentransmissioncyclesarerandominnature;thusprovidingamethodforavoidinginterferencewithtransmissionfromotherdevices.EachSCMmessagecontainstamperinformation.BelowisachartthatindicatesthetamperinformationavailableineachSCM:SCM#lndicator#GroupIIMeterInversionI2MeterRemoval21DemandReset(PushButton)22LowBatteryorEndofBillingSchedule(1yearfromendofwarning)31BillingEvents32Non-BillingWarningsITamper,Event,andAlarmsIndicatorBehavior:Twobitsareusedtologtheabovealarm,event,andtamperoccurrenceGroups..AllIndicatorsare“Non-Latching”,meaningtheR300CD/CD3boardcontinuestoincrementforeachandeveryalarm,event,ortamperoccurrenceeachtimetheyhappen.64CENTRON®MeterTechnicalReferenceGuide TantalusTantalusSystemsCorp.301—3480GilmoreWay,Burnaby,BCCanadaV5G4Y1Tel.604.299.0458•Fax604.451.4111www.tantalus.comMay23,2012ToWhomItMayConcern:ToinvestigatetheRFexposureoftheTantalusSystemsCorp.TC-1120/1220seriescommunicationmoduletheFCCOETBulletin65andtheHealthCanadaSafetyCode6(asspecifiedinRSS-102)havebeenusedasguidelinestodeterminecompliancewiththeFCCandICRfexposurelimit.InadditiontheFCChasallowedtoomitthe20cmgrantnoteandusermanualstatementspecificallyforutilitymetersifthesource-basedtime-averagedoutputpowersarebelowtheJuly17,2002TCBExclusionListfootnote3GeneralPopulation,foradistancegreaterthanorequalto2.5cmthresholdlevels.Analysis:AsperOETBulletin65andHealthCanadaSafetyCode6guidelines:TheEUTisclassedtomeettheRFexposurethatitsubjectstothe“GeneralPopulation/UncontrolledEnvironment”.Underthisclassthelimitiscalculatedby:S=f/1500WhereSisthePowerDensityinmW/cm2.FisthefrequencyofoperationinMHz.TheEUToperatesinthe902to928MHzband,thelowerexposurelimitwouldbeobtainedbyusingafrequencyattheloweredgeoftheband,therefore:S=902/1500=0.601mW/cm2ThemaximumEIRPwasmeasuredtobe0.828WHowever,undernormaloperationthetransmitterisnotoncontinuouslyandthereforeitspowermustbetimeaveraged.Themaximumtotaltransmitcyclewillbe10.7%. TheaverageEIRPistherefore:EIRP(averaae)=*dutycycleEIRP(averacye)=0.828W0.107=0.0941WThepredictedpowerdensityatadistanced,inthesamehorizontalplaneastheelevationoftheantennaiscalculatedandgraphedbelow:Eirp:=0.828Duty_cycle:=0.107Eirp_avg:=EirpDuty_cycleFreqMhz:=902FreqMhzd:=0.01,0.011..10(Distanceinmeters)Fcclimit:=(FccLimitinW/cm2)15001000C.)C)zCTheEUTisnormallyoperatedandhousedwithinanelectromechanicalutilitymeter.FromthepredictedexposurelevelsgraphedabovethedistanceawayfromtheEUTantennawheretheRFexposurelimitisexceededisrequiredtobelessthan4cm.TypicallyoccupantsofthebuildinginwhichtheEUTisinstalledaremanytimesfartherthan4cmfromtheEUTandthereforetypicalexposuresoccuratdistancesgreaterthanonemeter.Atonemeterthepredictedpowerdensityis0.810uW/cm2or0.13%oftheallowableFCCexposurelimit.(PowerinW/cm2)s(d):=Eirp_avg4.7t.(d.100)20.0111s(d)1Fcclirnit—1101100.010.1110dflistnncfrnrnAntnniinMfcr AsperTCBExclusionList,footnote3,GeneralPopulation>2.5cm:Specificallyfortelemetryutilitymeters,themaximumtimeaveragedsourcebasedoutputpowermustbebelowthefollowinginordertoallowomissionofthe20cmnoteandstatementonaTCBGrantofEquipmentAuthorizationandEUTusermanualrespectively.l2O/f(GH)mWor120/0.928=129mWAsinthepreviousanalysisthemaximumtimeaveragedsourcedbasedoutputpoweris94.1mWandrepresents73%ofthelimit.Result:TheEUTdoesnotexposethepublictoradiofrequencyenergylevelsinexcessoftheFCCguidelines.ThefollowingstatementisnotreiuiredonaTCBGrantofEquipmentAuthorizationorintheEUTusermanual:“Theantennausedforthistransmittermustbefixed-mountedinapermanentstructureprovidingaseparationdistanceofatleast20cmfromallpersonsduringnormaloperation.”MarkFairburnRFDesignEngineerTantalusSystemsCorp. TantalusTantalusSystemsCorp.301—3480GilmoreWay,Burnaby,BCCanadaV5G4Y1Tel.604.299.0458.fax604.451.4111www.tantalus.comSeptember3,2013ToWhomItMayConcern:AnewdataratehasbeencreatedfortheSmartMetercommunicationmodule(FCCID:OZFACXX2O).averagedafactorof1.5;thisisduetothehigherdataratebeingabletoacknowledgemoredeviceswithaSincetheRFexposureatthenewdatarateisloweritmeansthattheBYexposuredataandtheusermanualcontainpertinentinformationfortheexistingdatarateandnewexhibitsarenotrequired.MarkFairburnREDesignEngineerTantalusSystemsCorp.