2A8DO-S89TWS Earbuds

Guangzhou Wesdar Electronic Technology Co.,Ltd

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Application Details

Equipment Class: DSS - Part 15 Spread Spectrum Transmitter
Date of Grant: Nov 08, 2022
Application Purpose: Original Equipment
Date of Application: Nov 07, 2022
Equipment Note: TWS Earbuds
Frequency Range: 2402.00000000 - 2480.00000000
Company: Guangzhou Wesdar Electronic Technology Co.,Ltd
Country: China

Documents & Files

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Document Text

Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Cover Letter(s)

GuangzhouWESDARElectronicTechnology.,Ltd AgentAuthorizationLetter (2022-11-07) RE:LETTEROFAGENTAUTHORIZATION ToWhomItMayConcern: We,authorizeMicomLabsInc.,575BoulderCourt,Pleasanton,California94566, USAtoactonourbehalfinallmattersrelatingtoapplicationforequipment authorization,includingthesigningofalldocumentsrelatingtothesematters. Thisagreementexpiresoneyearfromthecurrentdate. Sincerely, CelineLiu/SalesManager CompanyName:GuangzhouWESDARElectronicTechnology.,Ltd Address:No.6,Industry1stRoad,ShangshaoVillage,XintangTown,Zengcheng District,Guangzhou,China

Cover Letter(s)

GuangzhouWESDARElectronicTechnology.,Ltd OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:2022-11-03 Subject;RequestforConfidentiality FCCID:2A8DO-S89 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthesedocuments mightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantageinthemarket. SchematicDiagram BlockDiagram OperationalDescription SWSECURITYDESCRIPTION PartsList Tuneup Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: Name:CelineLiu Title:SalesManager

External Photos

Code:AB-RF-05-b ExternalPhotograph Code:AB-RF-05-b Code:AB-RF-05-b Code:AB-RF-05-b Code:AB-RF-05-b Code:AB-RF-05-b Code:AB-RF-05-b

ID Label/Location Info

LabelLocation: FCC:2A8DO-S89

ID Label/Location Info

LabelLocation: FCC:2A8DO-S89

Internal Photos

Code:AB-RF-05-b InternalPhotograph Code:AB-RF-05-b ANT Code:AB-RF-05-b Code:AB-RF-05-b Code:AB-RF-05-b

RF Exposure Info

RFEXPOSUREEVALUATION FCCID:2A8DO-S89 AccordingtoFCC1.1310:Thecriterialistedinthefollowingtableshallbeused toevaluatetheenvironmentimpactofhumanexposuretoradiofrequency(RF) Radiationasspecifiedin§1.1307(b): RoutineSARevaluationreferstothatspecificallyrequiredby§2.1093,using measurementsorcomputersimulation.WhenroutineSARevaluationisnot required,portabletransmitterswithoutputpowergreaterthantheapplicable lowthresholdrequireSARevaluationtoqualifyforTCBapproval. Channel (MHz) Maximum output power (dBm) Tuneup tolerance (dBm) MaxTuneUp Power (dBm) Distance (mm) Calculation results Limit Operating Mode 2402-4.68-4.68 ±1 -3.6850.133 3 BDR+EDR 2441-4.13-4.13 ±1 -3.1350.152 3 2480-3.79-3.79±1-2.7950.166 3 2402-3.98-3.98 ±1 -2.9850.156 3 2441-3.39-3.39 ±1 -2.3950.180 3 2480-3.08-3.08±1-2.0850.195 3 Result:NoStandaloneSARtestisrequired.

RF Exposure Info

Test Report

Page1of40 AppendixTestData ReportNo.:18220WC20230901TestSampleNo.:1-2-2 StartTestDate:2022.9.27FinishTestDate:2022.9.30 TestEngineer:Auditor: Temperature:27.3 °C RelativeHumidity:47% Pressure:1012hPa AppendixA:20dBEmissionBandwidth TestResult TestModeAntennaFrequency[MHz] 20db EBW[MHz] FL[MHz]FH[MHz] DH5Ant1 24020.9572401.5352402.492 24410.9542440.5442441.498 24800.9572479.5382480.495 2DH5Ant1 24021.2842401.3732402.657 24411.2812440.3732441.654 24801.3202479.3402480.660 Page2of40 TestGraphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Page3of40 2DH5_Ant1_2402 2DH5_Ant1_2441 Page4of40 2DH5_Ant1_2480 Page5of40 AppendixB:OccupiedChannelBandwidth TestResult TestModeAntennaFrequency[MHz] OCB[MHz] FL[MHz]FH[MHz] DH5Ant1 24020.861242401.56522402.4265 24410.864742440.56462441.4293 24800.863012479.56592480.4289 2DH5Ant1 24021.18782401.40492402.5927 24411.19032440.40382441.5941 24801.18512479.40472480.5898 Page6of40 TestGraphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Page7of40 2DH5_Ant1_2402 2DH5_Ant1_2441 Page8of40 2DH5_Ant1_2480 Page9of40 AppendixC:Maximumconductedoutputpower TestResultPeak Test Mode AntennaFrequency[MHz] ConductedPeak Power[dBm] Conducted Limit[dBm] Verdict DH5Ant1 2402-4.68≤20.97PASS 2441-4.13≤20.97PASS 2480-3.79≤20.97PASS 2DH5Ant1 2402-3.98≤20.97PASS 2441-3.39≤20.97PASS 2480-3.08≤20.97PASS Page10of40 TestGraphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Page11of40 2DH5_Ant1_2402 2DH5_Ant1_2441 Page12of40 2DH5_Ant1_2480 Page13of40 AppendixD:Carrierfrequencyseparation TestResult TestModeAntennaFrequency[MHz]Result[MHz]Limit[MHz]Verdict DH5Ant1Hop0.994≥0.957PASS 2DH5Ant1Hop0.946≥0.880PASS Page14of40 TestGraphs DH5_Ant1_Hop 2DH5_Ant1_Hop Page15of40 AppendixE:Timeofoccupancy TestResult TestModeAntennaFrequency[MHz] BurstWidth [ms] TotalHops [Num] Result[s]Limit[s]Verdict DH1Ant1Hop0.3703200.118≤0.4PASS DH3Ant1Hop1.6261580.257≤0.4PASS DH5Ant1Hop2.8741060.305≤0.4PASS 2DH1Ant1Hop-1.255319-0.4≤0.4PASS 2DH3Ant1Hop1.6311550.253≤0.4PASS 2DH5Ant1Hop2.8801080.311≤0.4PASS Page16of40 TestGraphs DH1_Ant1_Hop DH3_Ant1_Hop Page17of40 DH5_Ant1_Hop Page18of40 2DH1_Ant1_Hop 2DH3_Ant1_Hop Page19of40 2DH5_Ant1_Hop Page20of40

Test Report

Page21of40 AppendixF:Numberofhoppingchannels TestResult TestModeAntennaFrequency[MHz]Result[Num]Limit[Num]Verdict DH5Ant1Hop79≥15PASS 2DH5Ant1Hop79≥15PASS Page22of40 TestGraphs DH5_Ant1_Hop 2DH5_Ant1_Hop Page23of40 AppendixG:Bandedgemeasurements TestResult TestModeAntennaChNameFrequency[MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5Ant1 Low2402-5.49-49.61≤-25.49PASS High2480-4.45-54.75≤-24.45PASS LowHop_2402-5.40-54.9≤-25.4PASS HighHop_2480-4.53-52.64≤-24.53PASS 2DH5Ant1 Low2402-5.41-52.29≤-25.41PASS High2480-4.25-56.5≤-24.25PASS LowHop_2402-7.11-56.96≤-27.11PASS HighHop_2480-4.14-54.71≤-24.14PASS Page24of40 TestGraphs DH5_Ant1_Low_2402 DH5_Ant1_High_2480 DH5_Ant1_Low_Hop_2402 Page25of40 DH5_Ant1_High_Hop_2480 2DH5_Ant1_Low_2402 Page26of40 2DH5_Ant1_High_2480 2DH5_Ant1_Low_Hop_2402 2DH5_Ant1_High_Hop_2480 Page27of40 Page28of40 AppendixH:ConductedSpuriousEmission TestResult TestModeAntennaFrequency[MHz] FreqRange [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5Ant1 2402 Reference-5.90-5.90---PASS 30~1000-5.90-68.8≤-25.9PASS 1000~26500-5.90-51.33≤-25.9PASS 2441 Reference-5.27-5.27---PASS 30~1000-5.27-68.21≤-25.27PASS 1000~26500-5.27-50.77≤-25.27PASS 2480 Reference-4.64-4.64---PASS 30~1000-4.64-69.5≤-24.64PASS 1000~26500-4.64-51.26≤-24.64PASS 2DH5Ant1 2402 Reference-9.42-9.42---PASS 30~1000-9.42-69.09≤-29.42PASS 1000~26500-9.42-51.29≤-29.42PASS 2441 Reference-8.28-8.28---PASS 30~1000-8.28-69.61≤-28.28PASS 1000~26500-8.28-50.91≤-28.28PASS 2480 Reference-5.62-5.62---PASS 30~1000-5.62-68.94≤-25.62PASS 1000~26500-5.62-51.2≤-25.62PASS Page29of40 TestGraphs DH5_Ant1_2402_0~Reference DH5_Ant1_2402_30~1000 DH5_Ant1_2402_1000~26500 Page30of40 DH5_Ant1_2441_0~Reference DH5_Ant1_2441_30~1000 Page31of40 DH5_Ant1_2441_1000~26500 DH5_Ant1_2480_0~Reference DH5_Ant1_2480_30~1000 Page32of40 DH5_Ant1_2480_1000~26500 2DH5_Ant1_2402_0~Reference Page33of40 2DH5_Ant1_2402_30~1000 2DH5_Ant1_2402_1000~26500 2DH5_Ant1_2441_0~Reference Page34of40 2DH5_Ant1_2441_30~1000 2DH5_Ant1_2441_1000~26500 Page35of40 2DH5_Ant1_2480_0~Reference 2DH5_Ant1_2480_30~1000 2DH5_Ant1_2480_1000~26500 Page36of40 Page37of40 AppendixI:DutyCycle TestResult TestModeAntenna Frequency[ MHz] ONTime [ms] Period [ms] DutyCycle [%] DutyCycle Factor[dB] DH5Ant1 24022.893.7577.071.13 24412.883.7576.801.15 24802.883.7576.801.15 2DH5Ant1 24022.893.7676.861.14 24412.883.7576.801.15 24802.893.7577.071.13 Page38of40 TestGraphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Page39of40 2DH5_Ant1_2402 2DH5_Ant1_2441 Page40of40 2DH5_Ant1_2480 ---End---

Test Report

ReportNo.:18220WC20230901FCCID:2A8DO-S89Page1of32 Code:AB-RF-05-b FCCTestReport ClientName: GuangzhouWESDARElectronic Technology.,Ltd ClientAddress: No.6,Industry1stRoad,Shangshao Village,XintangTown,ZengchengDistrict, Guangzhou,China ProductName:TWSEarbuds ReportDate:Nov.12,2022 ShenzhenAnbotekComplianceLaboratoryLimited ReportNo.:18220WC20230901FCCID:2A8DO-S89Page2of32 Code:AB-RF-05-b Contents 1.GeneralInformation ............................................................................................................................................6 1.1.ClientInformation ....................................................................................................................................6 1.2.DescriptionofDevice(EUT) ..................................................................................................................6 1.3.AuxiliaryEquipmentUsedDuringTest .................................................................................................7 1.4.DescriptionofTestConfiguration ..........................................................................................................7 1.5.DescriptionOfTestSetup ......................................................................................................................8 1.6.TestEquipmentList .................................................................................................................................9 1.7.MeasurementUncertainty ....................................................................................................................10 1.8.DescriptionofTestFacility ...................................................................................................................10 2.SummaryofTestResults .................................................................................................................................11 3.ConductedEmissionTest ................................................................................................................................12 3.1.TestStandardandLimit ........................................................................................................................12 3.2.TestSetup ...............................................................................................................................................12 3.3.TestProcedure .......................................................................................................................................12 3.4.TestData .................................................................................................................................................12 4.RadiationSpuriousEmissionandBandEdge .............................................................................................15 4.1.TestStandardandLimit ........................................................................................................................15 4.2.TestSetup ...............................................................................................................................................15 4.3.TestProcedure .......................................................................................................................................16 4.4.TestData .................................................................................................................................................17 5.MaximumPeakOutputPowerTest ...............................................................................................................25 5.1.TestStandardandLimit ........................................................................................................................25 5.2.TestSetup ...............................................................................................................................................25 5.3.TestProcedure .......................................................................................................................................25 5.4.TestData .................................................................................................................................................25 6.20DBOccupyBandwidthTest ........................................................................................................................26 6.1.TestStandard .........................................................................................................................................26 6.2.TestSetup ...............................................................................................................................................26 6.3.TestProcedure .......................................................................................................................................26 6.4.TestData .................................................................................................................................................26 7.CarrierFrequencySeparationTest ................................................................................................................27 7.1.TestStandardandLimit ........................................................................................................................27 7.2.TestSetup ...............................................................................................................................................27 7.3.TestProcedure .......................................................................................................................................27 7.4.TestData .................................................................................................................................................27 8.NumberofHoppingChannelTest ..................................................................................................................28 8.1.TestStandardandLimit ..........................................................................…

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Test Report

P/N: S1608ISMA02 REV:A0 SBR Communication has possession of proprietary information provided in this report and this proprietary information shall be kept in strict confidence and not disclosed to any person or firm without the prior written consent of SBR Communication Technology. 地址：深圳市宝安区西乡街道鹤州社区恒丰工业城B25栋二层 TEL: 0755-82790675, FAX: 0755 -82809726 www.surbaner.com.cn 1 / 6 Features 1. Surface Mounted Devices with a small dimension of 1.6 x 0.8 x 0.8mm meet future miniaturization trend. 2. Embedded and LTCC (low temperature co-fired ceramic) technology is able to integrate with system design as well as beatifying the housing of final product. 3. High stability and low tolerance. Applications 1. Bluetooth and Wireless LAN 2. ISM 2.4GHz in smart phone 3. PDA and other handheld devices. 4. ISM band 2.4GHz applications Dimensions（Unit：mm） Symbols L W T A Dimensions 1.60±0.20 0.80±0.20 0.80±0.10 0.30±0.10 P/N: S1608ISMA02 REV:A0 SBR Communication has possession of proprietary information provided in this report and this proprietary information shall be kept in strict confidence and not disclosed to any person or firm without the prior written consent of SBR Communication Technology. 地址：深圳市宝安区西乡街道鹤州社区恒丰工业城B25栋二层 TEL: 0755-82790675, FAX: 0755 -82809726 www.surbaner.com.cn 2 / 6 Evaluation Board and Matching Circuits P/N: S1608ISMA02 REV:A0 SBR Communication has possession of proprietary information provided in this report and this proprietary information shall be kept in strict confidence and not disclosed to any person or firm without the prior written consent of SBR Communication Technology. 地址：深圳市宝安区西乡街道鹤州社区恒丰工业城B25栋二层 TEL: 0755-82790675, FAX: 0755 -82809726 www.surbaner.com.cn 3 / 6 Electrical Characteristics Item Feature Specification 1 Central frequency 2445MHz 2 Bandwidth >100MHz 3 Peak gain 2.6dBi 4 VSWR <2 5 Polarization Linear 6 Azimuth beamwidth Omnidirectional 7 Impedance 50 Ω NOTE: The specification is defined based on the test board dimension. (1) Smith Chart P/N: S1608ISMA02 REV:A0 SBR Communication has possession of proprietary information provided in this report and this proprietary information shall be kept in strict confidence and not disclosed to any person or firm without the prior written consent of SBR Communication Technology. 地址：深圳市宝安区西乡街道鹤州社区恒丰工业城B25栋二层 TEL: 0755-82790675, FAX: 0755-82809726 www.surbaner.com.cn 4 / 6 (2) S-Parameter (3) Radiation Pattern P/N: S1608ISMA02 REV:A0 SBR Communication has possession of proprietary information provided in this report and this proprietary information shall be kept in strict confidence and not disclosed to any person or firm without the prior written consent of SBR Communication Technology. 地址：深圳市宝安区西乡街道鹤州社区恒丰工业城B25栋二层 TEL: 0755-82790675, FAX: 0755-82809726 www.surbaner.com.cn 5 / 6 Y-Z Plane X-Z Plane P/N: S1608ISMA02 REV:A0 SBR Communication has possession of proprietary information provided in this report and this proprietary information shall be kept in strict confidence and not disclosed to any person or firm without the prior written consent of SBR Communication Technology. 地址：深圳市宝安区西乡街道鹤州社区恒丰工业城B25栋二层 TEL: 0755-82790675, FAX: 0755 -82809726 www.surbaner.com.cn 6 / 6 X-Y Plane Frequency 2400MHz 2450MHz 2490MHz Avg. gain dBi 1.20 0.90 0.35 Peak gain dBi 2.6 2.6 2.4 Efficiency % 62% 55% 52% Dependability Test Test Temperature 25°C±3°C Operating Temperature -25°C~+85°C Temperature 5~+40°C Relative Humidity 20~70%HR

Test Setup Photos

Code:AB-RF-05-b TestSetupPhotograph PhotoofConductedEmissionMeasurement PhotoofRadiationEmissionTest Code:AB-RF-05-b