2BMA9-A2000Open-Ear Headphones

Shenzhenshixiaohuangdoukejiyouxiangongsi (13shi,6FBqu,shenzhoudiannaodasha,julifurendadaowankecheng shequ,bantianjiedao,longgangqu,shenzhen,China ) AttestationStatements NotCoveredEntityApplicant&NotCoveredEquipment To:FederalCommunicationsCommissionDate:Nov.24,2025 7435OaklandMillsRoad, Columbia,MD21046,USA Ref:InformationRequiredbySection2.911(d)(5)(i)&(ii) FCCID:2BMA9-A2000 shenzhenshixiaohuangdoukejiyouxiangongsi(“theapplicant”)certifiesthat,asofthedateofthefilingof theapplication,theapplicantisnotidentifiedontheCoveredList,establishedpursuantto§1.50002of referencechapter,asanentityproducing“covered”communicationequipment.Theequipmentfor whichauthorizationissoughtisnot“covered”telecommunicationsequipmentandvideosurveillance equipmentproducedbyentitiesidentifiedontheCommission’sCoveredListthatprohibitedfrom receivinganequipmentauthorizationpursuanttosection§2.903oftheFCCrules. Sincerelyyours, ApplicantSignature PrintedName:junwu Title:Manager Address:13shi,6FBqu,shenzhoudiannaodasha,julifurendadaowankecheng shequ,bantianjiedao,longgangqu,shenzhen,China Email:[email protected]

Shenzhenshixiaohuangdoukejiyouxiangongsi (13shi,6FBqu,shenzhoudiannaodasha,julifurendadaowankecheng shequ,bantianjiedao,longgangqu,shenzhen,China ) 1|Page AttestationStatements To:FederalCommunicationsCommissionDate:Nov.24,2025 7435OaklandMillsRoad, Columbia,MD21046,USA Subject:AttestationofCompliancewithFCCCoveredListSoftwareRequirements FCCID:2BMA9-A2000 ProductName:Open-EarHeadphones Thisletterservesasanattestationthattheequipmentidentifiedabove☐is/☒isnot(selectone)"covered" softwareasdefinedundertheFederalCommunicationsCommission(FCC)CoveredListrequirements,as outlinedinFCC22-84andKDB986446. Specifically,theundersignedcertifiesthattheequipmentforwhichauthorizationissought: 1.Doesnotcontaincybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab, Inc.oranyofitssuccessors,assignees,parents,subsidiaries,affiliates,oranyentitythathasrebranded orrelabeledsoftwareproducedbytheaforementionedentities. 2.Doesnothavethecapabilitytostore,run,ordeliveranysoftwareidentifiedontheFCCCoveredList, includingbutnotlimitedtocybersecurityandanti-virussoftware. Tosupportthisattestation,theappendixevaluationdocumentationhasbeenpreparedandisincludedinthe certificationfiling. Thisattestationisbasedonathoroughevaluationofthedevice'sdesign,functionality,andsoftware environment.Theundersignedaffirmsthattheinformationprovidedisaccurateandcompletetothebestof theirknowledge. Sincerelyyours, ApplicantSignature PrintedName:junwu Title:Manager Address:13shi,6FBqu,shenzhoudiannaodasha,julifurendadaowankecheng shequ,bantianjiedao,longgangqu,shenzhen,China Tel.:008613510021916 Email:[email protected] Shenzhenshixiaohuangdoukejiyouxiangongsi (13shi,6FBqu,shenzhoudiannaodasha,julifurendadaowankecheng shequ,bantianjiedao,longgangqu,shenzhen,China ) 2|Page EvaluationregardingtotheCoveredListSoftware: Compliance Methodology EvaluationProcessResults Deviceis Inherent compliance ☒ TheChipset(s)usedislimitedtorun theCybersecurityoranti-virus software. Compliance ☒ TheMemoryusedislimitedtorunthe Cybersecurityoranti-virussoftware. Compliance ☒ Thereisstoragecapacitylimitationfor storeorinstalltheCybersecurityor anti-virussoftware. Compliance ☒ Operatingsystemusedislimitedto run,installordelivertheCybersecurity oranti-virussoftware. Compliance Deviceisnot Inherent compliance ☐ EvaluationBasedonSoftware BillofMaterials(SBoM) Seeattached“SBoM“ Note:TheSBoMcontentislimited tothescopeofcoveredlist software(e.g.antivirusand cybersecuritysoftware). ☐ EvaluationBasedonScanfor Softwareonthedevice ☐ EvaluationBasedonFilesystemscan ☐ EvaluationBasedonRunning softwarecheck SBOM(SoftwareBillofMaterials)[ForDeviceisnotInherentcompliance] SectionComponentNameVersionSupplier 1 2 3

Shenzhenshixiaohuangdoukejiyouxiangongsi (13shi,6FBqu,shenzhoudiannaodasha,julifurendadaowankecheng shequ,bantianjiedao,longgangqu,shenzhen,China ) U.S.AgentLetterofAttestation To:FederalCommunicationsCommission 7435OaklandMillsRoad,Columbia,MD21046,USA Date:November24,2025 Ref:AttestationStatement–Part2.911(d)(7)filing FCCID:2BMA9-A2000 [shenzhenshixiaohuangdoukejiyouxiangongsi](“theapplicant”)certifiesthat,asofthedateofthe filingoftheapplication,[GOLDENVICTORYINTERNATIONALTRADINGCOLTD](“theagent”)is ourdesignatedU.S.agentforserviceofprocessfortheabovereferenceFCCID.Theapplicant acceptstomaintainanagentforserviceofprocessintheUnitedStatesfornolessthanoneyear aftereitherthegranteehaspermanentlyterminatedallmarketingandimportationoftheapplicable equipmentwithintheU.S.,ortheconclusionofanyCommission-relatedadministrativeorjudicial proceedinginvolvingtheequipment,whicheverislater.Theapplicantfurtheracknowledgesitisour responsibilitytoinformtheFCCwhenevertheagentinformationchanges. [GOLDENVICTORYINTERNATIONALTRADINGCOLTD]("theagent)understanditistheagent's obligationtoacceptserviceofprocessintheUnitedStatesformattersrelatedtotheapplicable equipment,andatthephysicalU.S.addressandemailaddress. DesignatedU.S.Agent CompanyName:GOLDENVICTORYINTERNATIONALTRADINGCOLTD FRN:0036377570 Address:11016THSTREETSUITE1400 DENVER,CO80202UnitedStates Signature: ContactPerson:LeonHowar ContactPerson:Manager Tel:(337)255-0461Email: [email protected] Applicant CompanyName:shenzhenshixiaohuangdoukejiyouxiangongsi FRN:0036300218 Address:13shi,6FBqu,shenzhoudiannaodasha,julifurendadao wankechengshequ,bantianjiedao,longgangqu,shenzhen,China Signature: ContactPerson:junwu ContactPerson:Manager Tel:008613510021916Email:[email protected]

Shenzhenshixiaohuangdoukejiyouxiangongsi ( 13shi,6FBqu,shenzhoudiannaodasha,julifurendadaowankecheng shequ,bantianjiedao,longgangqu,shenzhen,China) Date:November24,2025 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:ConfidentialityRequestfor:FCCID:2BMA9-A2000 PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestpermanent confidentialtreatmentoftheexhibitsaccompanyingthiscertificationapplicationasoutlinedbelow: BlockDiagram Schematics OperationalDescription Theaboveexhibitscontaintradesecretsand/orproprietaryinformationthatarenotpubliclyavailableand materialsthattheApplicanthasspentconsiderableeffortsindeveloping.Publicdisclosureofthesemay beharmfultotheApplicantandgiveanunfairadvantagetocompetitorsonthemarket. PursuanttoDA04-1705,theapplicantalsorequeststemporaryconfidentialtreatmentoftheexhibits outlinedbelowforaperiodof(upto180)daysfromthedateofequipmentauthorizationandpriorto marketingintheUnitedStatestopreventtheprematurereleaseofanysensitiveinformation.Applicantis awareoftheirresponsibilitytonotifyDERYCOMintheeventinformationregardingtheproductorthe productismadeavailabletothepublicbeforetherequestedperiodhasexpired.  UserManual InternalPhotos  TestSetupPhotos Sincerely, (Signature) Title:Manager Address:13shi,6FBqu,shenzhoudiannaodasha,julifurendadaowankecheng shequ,bantianjiedao,longgangqu,shenzhen,China Tel.:008613510021916 Email:[email protected]

Shenzhenshixiaohuangdoukejiyouxiangongsi ( 13shi,6FBqu,shenzhoudiannaodasha,julifurendadaowankecheng shequ,bantianjiedao,longgangqu,shenzhen,China) Date:November24,2025 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorizationforFCCID:2BMA9-A2000 I,theundersigned,herebyauthorize(GuangdongZhonghanTestingTechnologyCo.,Ltd.)toactonour behalfinallmattersrelatingtothisapplicationforequipmentcertification. Anyactcarriedoutby(GuangdongZhonghanTestingTechnologyCo.,Ltd.)shallhavethesameeffect asourownandIacknowledgethatallresponsibilityforcomplyingwiththetermsandconditionsof certification,asspecifiedbyDERYCOMCERTIFICATIONSERVICES,INC.,stillresideswith (shenzhenshixiaohuangdoukejiyouxiangongsi). WecertifythatwearenotsubjecttoadenialoffederalbenefitsthatincludesFCCbenefitspursuantto Section5301oftheAnti-DrugAbuseActof1988,21U.S.C.§862,andthatnopartytotheapplication,as definedin47CFR§1.2002(b),issubjecttoadenialoffederalbenefitsthatincludesFCCbenefits pursuanttothatsection. Sincerely, (Signature) (FullnameofcontactpersonlistedonFCC’swebsite) Title:Manager Tel:008613510021916 Fax:008613510021916 Email:[email protected]

shenzhenshixiaohuangdoukejiyouxiangongsi ModelDifference Date:Nov.24,2025 Productdescription:Open-EarHeadphones Modelname:GTbeansE20,GTbeansE20AI,E20,E20AI FCCID:2BMA9-A2000 GTbeansE20isthetestmodel,whileothermodelsarederivativemodels.These modelsarethesameonthecircuit,withonlydifferentmodelnamesandcolors. Therefore,thetestdataofGTbeansE20canrepresenttheremainingmodels. Client’ssignature: Client’sname/title:junwu/Manager Contactinformation/address:13shi,6FBqu,shenzhoudiannaodasha,julifurendadao wankechengshequ,bantianjiedao,longgangqu,shenzhen,China

FCCID:2BMA9-A2000 EUTPHOTOSExternalPhotos FCCID:2BMA9-A2000 FCCID:2BMA9-A2000 FCCID:2BMA9-A2000 FCCID:2BMA9-A2000 ※※※※※ENDOFREPORT※※※※※

Size:4mm*20mm FCCID:2BMA9-A2000

FCCID:2BMA9-A2000 RFExposureEvaluation AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1093 ， Unless specificallyrequiredbythepublishedRFexposureKDBprocedures,standalone1-gheador bodyand10-gextremitySARevaluationforgeneralpopulationexposureconditions,by measurementornumericalsimulation,isnotrequiredwhenthecorrespondingSARTest ExclusionThresholdcondition(s),listedbelow,is(are)satisfied. For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-gSARtest exclusionthresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f (GHz) ]≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f (GHz) istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison Here, ForBluetooth,BLE Mode Max Power (dBm) Tune-up power (dBm) Max Power (mW) Frequency(MHz) Min. Distance (mm) Calc. thresholds limit BT0.070±11.26244050.3943.0 SoaSARtestisnotrequired

Master M Customer： ei XHT0 Project： 2 A Antenna Revision： 0 Phone number: 18814303605 Date Antenna type： : 2024.12.26 Antenna Test Report FPC antenna Sequence Number Test Item equipment S parameter VSWR Agilent 5071C & Agilent 5071C OTA Test TRP&TIS Agilent 8960 & CMW500 Gain & Efficiency Gain & Efficiency Agilent 5071C 1.TestSystem Purpose Conten ThisreportistomeasuretheperformanceofantennaforXHT02The antennaoperatingfrequencyat2400MHz0-2500MHz。Alltestdataareshowed asbelow. t 3.1 S11 Parameter-VSWR 3.2 Gain & Efficiency 1. Product Overview & Dimension 2.Antenna size 3. Test Result 3.3 2D Pattern ManufacturerShenzhen Helixun Technology Co., Ltd Adress1004, Building 1, Jinhuanyu Building, No. 56 Tiezai Road, Gongle Community, Xixiang Street, Bao'an District, Shenzhen 2.Antenna size Frequency (MHz) 2400245024802500 VSWR2.391.421.331.56 Resul3.1 Testt 1 S11 Parameter-VSWR Frequency (MHz) 2400245024802500 Log Mag -7.71-15.14-16.75-13.10 Resul3 . Testt 2 S11 Parameter-Log Mag Frequency (MHz) 2400245024802500 Smi th(Ω ) 36.6647.4361.4773.29 Resul3.1Testt 3 S11 Parameter-VSWR Frequency (MHz) Efficiency (%) Peak GAIN (dBi) 2400 35.50 0.25 2410 38.40 0.59 2420 40.96 0.99 2430 40.14 1.48 2440 41.65 1.87 2450 41.59 2.24 2460 42.59 2.40 2470 42.70 2.52 2480 42.89 2.58 1 Gain & Efficiency——AN 3.2 Test Result T 1 2D Pattern——BTAN 3.3Test Result T 2 2D Pattern——BT AN 3.3Test Result T 3 2D Pattern——BT AN 3.3Test Result T

ProjectNo.:ZHT-250917115W02 Page 1 of 163 FCCTESTREPORT FCCID:2BMA9-A2000 ReportNo........................:ZHT-250917115W02 Product............................:Open-EarHeadphones Trademark.......................:GTbeans Model(s)...........................: GTbeansE20 GTbeansE20AI,E20,E20AI ModelDifference..............: GTbeansE20isthetestmodel,whileothermodelsarederivativemodels. Thesemodelsarethesameonthecircuit,withonlydifferentmodelnames andcolors.Therefore,thetestdataofGTbeansE20canrepresentthe remainingmodels. Applicant..........................:shenzhenshixiaohuangdoukejiyouxiangongsi Address............................:13shi,6FBqu,shenzhoudiannaodasha,julifurendadaowankecheng shequ,bantianjiedao,longgangqu,shenzhen,China Manufacturer....................:shenzhenshixiaohuangdoukejiyouxiangongsi Address............................:13shi,6FBqu,shenzhoudiannaodasha,julifurendadaowankecheng shequ,bantianjiedao,longgangqu,shenzhen,China Preparedby.....................:GuangdongZhonghanTestingTechnologyCo.,Ltd. Address............................:Room104/201,Building1,YibaolaiIndustrialPark,Qiaotou,Fuhai Subdistrict,Bao'anDistrict,Shenzhen,Guangdong,China DateofReceipt................:Sept.13,2025 DateofTest(s).................:Sept.13,2025toSept.29,2025 DateofIssue....................:Sept.29,2025 TestStandard(s)..............:FCCCFRTitle47Part15SubpartCSection15.247 Testprocedure................:ANSIC63.10-2020 Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove. Preparedby:Reviewedby:Approvedby: KimiLu/EngineerBaretWu/DirectorLeviLee/Manager Note:Theresultsshowninthistestreportreferonlytothesample(s)testedunlessotherwisestated.Thistest reportshallnotbereproducedexceptinfull,withoutpriorwrittenapprovalofZHT.Thisdocumentmaybe alteredorrevisedbyZHT,personnelonly,andshallbenotedintherevisionofthedocument. ProjectNo.:ZHT-250917115W02 Page 2 of 163 TableofContents Page 1.VERSION.....................................................................................................................................4 2.TESTSUMMARY........................................................................................................................5 3.GENERALINFORMATION.........................................................................................................6 3.1GENERALDESCRIPTIONOFEUT.........................................................................................6 3.2TestSetupConfiguration...........................................................................................................8 3.3SupportEquipment....................................................................................................................8 3.4TestMode..................................................................................................................................8 4.TESTFACILITYANDTESTINSTRUMENTUSED...................................................................9 4.1TESTFACILITY.........................................................................................................................9 4.2EQUIPMENTSLISTFORALLTESTITEMS...........................................................................9 4.3Testingsoftware.........................................................................................................................9 4.4MEASUREMENTUNCERTAINTY..........................................................................................11 5.EMCEMISSIONTEST..............................................................................................................12 5.1Conductedemissions..............................................................................................................12 5.1.1POWERLINECONDUCTEDEMISSIONLimits.................................................................12 5.1.2TESTPROCEDURE............................................................................................................12 5.1.3DEVIATIONFROMTESTSTANDARD...............................................................................12 5.1.4TESTSETUP........................................................................................................................13 5.1.5EUTOPERATINGCONDITIONS........................................................................................13 5.1.6TestResult............................................................................................................................13 5.2Radiatedemissions.................................................................................................................14 5.2.1RadiatedEmissionLimits.....................................................................................................14 5.2.2TESTPROCEDURE............................................................................................................14 5.2.3DEVIATIONFROMTESTSTANDARD...............................................................................15 5.2.4TESTSETUP........................................................................................................................15 5.2.5EUTOPERATINGCONDITIONS........................................................................................16 5.2.6TESTRESULTS...................................................................................................................17 6.RADIATEDBANDEMISSIONMEASUREMENT....................................................................33 6.1TestRequirement....................................................................................................................33 6.2TESTPROCEDURE...............................................................................................................33 6.3DEVIATIONFROMTESTSTANDARD..................................................................................34 6.4TESTSETUP...........................................................................................................................34 6.5EUTOPE…

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ProjectNo.:ZHT-250917115W02 Page 98 of 163 -20dBBandwidthNVNT3-DH52402MHzAnt1 -20dBBandwidthNVNT3-DH52441MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 99 of 163 -20dBBandwidthNVNT3-DH52480MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 100 of 163 Rightearphone ModeTestchannel 20dBEmission Bandwidth(MHz) 99%Bandwidth (MHz) Result GFSK Lowest1.0280.941 PassMiddle1.0390.943 Highest1.0530.951 π/4DQPSK Lowest1.3231.214 PassMiddle1.3071.23 Highest1.3441.224 8DPSK Lowest1.3031.218 PassMiddle1.2961.231 Highest1.2911.226 ProjectNo.:ZHT-250917115W02 Page 101 of 163 TestGraphs -20dBBandwidthNVNT1-DH52402MHzAnt1 -20dBBandwidthNVNT1-DH52441MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 102 of 163 -20dBBandwidthNVNT1-DH52480MHzAnt1 -20dBBandwidthNVNT2-DH52402MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 103 of 163 -20dBBandwidthNVNT2-DH52441MHzAnt1 -20dBBandwidthNVNT2-DH52480MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 104 of 163 -20dBBandwidthNVNT3-DH52402MHzAnt1 -20dBBandwidthNVNT3-DH52441MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 105 of 163 -20dBBandwidthNVNT3-DH52480MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 106 of 163 TestGraphs OBWNVNT1-DH52402MHzAnt1 OBWNVNT1-DH52441MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 107 of 163 OBWNVNT1-DH52480MHzAnt1 OBWNVNT2-DH52402MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 108 of 163 OBWNVNT2-DH52441MHzAnt1 OBWNVNT2-DH52480MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 109 of 163 OBWNVNT3-DH52402MHzAnt1 OBWNVNT3-DH52441MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 110 of 163 OBWNVNT3-DH52480MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 111 of 163 9.MaximumPeakOutputPower TestRequirement:FCCPart15CSection15.247(b)(1),RSS2475.4(b) TestMethod:ANSIC63.10-2020 9.1BlockDiagramOfTestSetup 9.2Limit Forfrequencyhoppingsystemsoperatinginthe2400-2483.5MHzbandemployingatleast75 non-overlappinghoppingchannels,andallfrequencyhoppingsystemsinthe5725-5850MHzband:1watt. Forallotherfrequencyhoppingsystemsinthe2400-2483.5MHzband:0.125watts. ForFHSsoperatingintheband2400-2483.5MHz,themaximumpeakconductedoutputpowershallnot exceed1.0Wifthehopsetuses75ormorehoppingchannels;themaximumpeakconductedoutputpower shallnotexceed0.125Wifthehopsetuseslessthan75hoppingchannels.Thee.i.r.p.shallnotexceed4W. 9.3Testprocedure 1.RemovetheantennafromtheEUTandthenconnectalowRFcablefromtheantennaporttothespectrum. 2.Setthespectrumanalyzer:RBW=2MHz.VBW=6MHz.Sweep=auto;DetectorFunction=Peak. 3.KeeptheEUTintransmittingatlowest,mediumandhighestchannelindividually.Recordthemaxvalue. 9.4DEVIATIONFROMSTANDARD Nodeviation. 9.5TestResult Leftearphone ModeTestchannel PeakOutputPower (dBm) PeakOutput PowerLimit (dBm) Result GFSK Lowest-1.17 21.00PassMiddle-1.11 Highest-1.22 π/4DQPSK Lowest-0.33 21.00 PassMiddle-0.27 Highest-0.38 8DPSK Lowest-0.09 21.00 PassMiddle0.07 Highest-0.12 ProjectNo.:ZHT-250917115W02 Page 112 of 163 TestGraphs PeakPowerNVNT1-DH52402MHzAnt1 PeakPowerNVNT1-DH52441MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 113 of 163 PeakPowerNVNT1-DH52480MHzAnt1 PeakPowerNVNT2-DH52402MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 114 of 163 PeakPowerNVNT2-DH52441MHzAnt1 PeakPowerNVNT2-DH52480MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 115 of 163 PeakPowerNVNT3-DH52402MHzAnt1 PeakPowerNVNT3-DH52441MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 116 of 163 PeakPowerNVNT3-DH52480MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 117 of 163 Rightearphone ModeTestchannel PeakOutputPower (dBm) PeakOutput PowerLimit (dBm) Result GFSK Lowest-1.26 21.00PassMiddle-1.3 Highest-1.42 π/4DQPSK Lowest-0.54 21.00 PassMiddle-0.45 Highest-0.65 8DPSK Lowest-0.16 21.00 PassMiddle-0.07 Highest-0.19 ProjectNo.:ZHT-250917115W02 Page 118 of 163 TestGraphs PeakPowerNVNT1-DH52402MHzAnt1 PeakPowerNVNT1-DH52441MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 119 of 163 PeakPowerNVNT1-DH52480MHzAnt1 PeakPowerNVNT2-DH52402MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 120 of 163 PeakPowerNVNT2-DH52441MHzAnt1 PeakPowerNVNT2-DH52480MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 121 of 163 PeakPowerNVNT3-DH52402MHzAnt1 PeakPowerNVNT3-DH52441MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 122 of 163 PeakPowerNVNT3-DH52480MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 123 of 163 10.HOPPINGCHANNELSEPARATION TestRequirement:FCCPart15CSection15.247(a)(1),RSS2475.1 TestMethod:ANSIC63.10-2020 Limit: GFSK,π/4-DQPSK&8DSK:0.025MHzor2/3ofthe20dBbandwidth (whicheverisgreater) 10.1TestSetup 10.2Testprocedure 1.RemovetheantennafromtheEUTandthenconnectalowRFcablefromtheantennaport tothespectrum. 2.Setthespectrumanalyzer:RBW=300kHz.VBW=300kHzforGFSK,RBW=100kHz.VBW=100kHzfor π/4-DQPSK&8DSK,Span=auto.Sweep=auto;DetectorFunction=Peak.Trace=Maxhold. 3.Allowthetracetostabilize.Usethemarker-deltafunctiontodeterminetheseparationbetweenthepeaksof theadjacentchannels.ThelimitisspecifiedinoneofthesubparagraphsofthisSectionSubmitthisplot. 10.3DEVIATIONFROMSTANDARD Nodeviation. 10.4TestResult Leftearphone ConditionModeAntennaHoppingFreq1(MHz)HoppingFreq2(MHz)HFS(MHz)Limit(MHz)Verdict NVNT1-DH5Ant12402.0762403.1181.0420.689Pass NVNT1-DH5Ant12440.9462442.0781.1320.701Pass NVNT1-DH5Ant124792479.9820.9820.708Pass NVNT2-DH5Ant12402.06062403.17861.1180.879Pass NVNT2-DH5Ant12440.96182442.17861.21680.883Pass NVNT2-DH5Ant12478.82922480.17861.34940.881Pass NVNT3-DH5Ant12401.86042402.99921.13880.86Pass NVNT3-DH5Ant12440.86042441.86661.00620.865Pass NVNT3-DH5Ant12479.0062479.88220.87620.855Pass ProjectNo.:ZHT-250917115W02 Page 124 of 163 TestGraphs CFSNVNT1-DH52402MHzAnt1 CFSNVNT1-DH52441MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 125 of 163 CFSNVNT1-DH52480MHzAnt1 CFSNVNT2-DH52402MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 126 of 163 CFSNVNT2-DH52441MHzAnt1 CFSNVNT2-DH52480MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 127 of 163 CFSNVNT3-DH52402MHzAnt1 CFSNVNT3-DH52441MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 128 of 163 CFSNVNT3-DH52480MHzAnt1 ProjectNo.:ZHT-250917115W02 Page 129 of 163 Rightearphone ConditionModeAntennaHoppingFreq1(MHz)HoppingFreq2(MHz)HFS(MHz)Limit(MHz)Verdict NVNT1-DH5Ant12401.9142403.1581.2440.685Pass NVNT1-DH5Ant12441.0782441.950.8720.693Pass NVNT1-DH5Ant12478.9442479.9320.9880.702P…

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