2A7GB-U8Bluetooth Headset

Shenzhen Jiechen Technology Co. LTD

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Application Details

Equipment Class: DSS - Part 15 Spread Spectrum Transmitter
Date of Grant: Jul 04, 2022
Application Purpose: Original Equipment
Date of Application: Jul 04, 2022
Equipment Note: Bluetooth Headset
Frequency Range: 2402.00000000 - 2480.00000000
Company: Shenzhen Jiechen Technology Co. LTD
Country: China

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External Photos

FCCID:2A7GB-U8

Internal Photos

FCCID:2A7GB-U8 ANT

Operational Description

version01 ShenzhenJiechenTechnologyCo.LTD DeclarationconcerningAntennaSpecification Itisherebydeclaredthattheproduct ModelNo.:U8pro,U8,U8plus,U18,U18pro,U18plus FCCID:2A7GB-U8 fulfillstherequirementinFCCtestrelatingtotheantennatype. ThedevicespecifiedaboveconfirmstotheFCCrecommendationsfor internal antennatype(s) describedbelow: ModelNo.ofantenna:N/A Typeofantenna: CeramicAntenna Gainoftheantenna:2dBi Frequencyrange:2402-2480MHzMHz Themountingoftheantennaisfixedtotheradiomoduleandnootherantennashouldbeused. Companyname:ShenzhenJiechenTechnologyCo.LTD Address: 502,Floor5,Building17,MakerTown,No.4109,Liuxian Avenue,PingshanCommunity,TaoyuanStreet,NanshanDistrict, Shenzhen,China City:Shenzhen ZIP/Postalcode:/ Country:China Place:ShenzhenDate:6/22/2022 Signature:

RF Exposure Info

RFEXPOSUREEVALUATION FCCID:2A7GB-U8 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 24020.440.44 ±1 1.4450.432 3 GFSK 24410.470.47 ±1 1.4750.438 3 24800.590.59±11.5950.454 3 2402-0.24-0.24 ±1 0.7650.369 3 π/4-DQPSK 2441-0.21-0.21 ±1 0.7950.375 3 2480-0.18-0.18±10.8250.380 3 2402-0.11-0.11 ±1 0.8950.380 3 8DPSK 2441-0.04-0.04 ±1 0.9650.390 3 2480-0.01-0.01±10.9950.396 3 Result:NoStandaloneSARtestisrequired.

Test Report

Page1of50 AppendixTestData ReportNo.:18220WC20126301TestSampleNo.:1-2-2 StartTestDate:2022.6.14FinishTestDate:2022.6.17 TestEngineer:Auditor: Temperature:24.3 °C RelativeHumidity:57.2% Pressure:1012hPa AppendixA:20dBEmissionBandwidth TestResult TestModeAntennaChannel 20db EBW[MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict DH5Ant1 24020.9452401.5382402.483---PASS 24410.9482440.5382441.486---PASS 24800.9452479.5382480.483---PASS 2DH5Ant1 24021.3262401.3342402.660---PASS 24411.3112440.3402441.651---PASS 24801.3262479.3342480.660---PASS 3DH5Ant1 24021.2692401.3522402.621---PASS 24411.3412440.3252441.666---PASS 24801.3322479.3312480.663---PASS Page2of50 TestGraphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Page3of50 2DH5_Ant1_2402 2DH5_Ant1_2441 Page4of50 2DH5_Ant1_2480 3DH5_Ant1_2402 3DH5_Ant1_2441 Page5of50 3DH5_Ant1_2480 Page6of50 AppendixB:OccupiedChannelBandwidth TestResult TestModeAntennaChannel OCB[MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict DH5Ant1 24020.89147 2401.55 4 2402.445---PASS 24410.88641 2440.55 7 2441.444---PASS 24800.88816 2479.55 4 2480.442---PASS 2DH5Ant1 24021.2043 2401.39 7 2402.601---PASS 24411.1945 2440.40 4 2441.599---PASS 24801.1926 2479.40 1 2480.593---PASS 3DH5Ant1 24021.2043 2401.38 9 2402.593---PASS 24411.2028 2440.39 2 2441.595---PASS 24801.1927 2479.40 1 2480.593---PASS Page7of50 TestGraphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Page8of50 2DH5_Ant1_2402 2DH5_Ant1_2441 Page9of50 2DH5_Ant1_2480 3DH5_Ant1_2402 3DH5_Ant1_2441 Page10of50 3DH5_Ant1_2480 Page11of50 AppendixC:Maximumconductedoutputpower TestResult TestModeAntennaChannelResult[dBm]Limit[dBm]Verdict DH5Ant1 24020.44≤20.97PASS 24410.47≤20.97PASS 24800.59≤20.97PASS 2DH5Ant1 2402-0.24≤20.97PASS 2441-0.21≤20.97PASS 2480-0.18≤20.97PASS 3DH5Ant1 2402-0.11≤20.97PASS 2441-0.04≤20.97PASS 2480-0.01≤20.97PASS Page12of50 TestGraphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Page13of50 2DH5_Ant1_2402 2DH5_Ant1_2441 Page14of50 2DH5_Ant1_2480 3DH5_Ant1_2402 3DH5_Ant1_2441 Page15of50 3DH5_Ant1_2480 Page16of50 AppendixD:Carrierfrequencyseparation TestResult TestModeAntennaChannelResult[MHz]Limit[MHz]Verdict DH5Ant1Hop0.922≥0.632PASS 2DH5Ant1Hop1.024≥0.884PASS 3DH5Ant1Hop1.018≥0.894PASS Page17of50 TestGraphs DH5_Ant1_Hop 2DH5_Ant1_Hop 3DH5_Ant1_Hop Page18of50 Page19of50 AppendixE:Timeofoccupancy TestResult TestModeAntennaChannel BurstWidth [ms] TotalHops [Num] Result[s]Limit[s]Verdict DH1Ant1Hop0.373130.117≤0.4PASS DH3Ant1Hop1.631590.259≤0.4PASS DH5Ant1Hop2.881060.305≤0.4PASS 2DH1Ant1Hop0.383170.12≤0.4PASS 2DH3Ant1Hop1.631600.261≤0.4PASS 2DH5Ant1Hop2.881000.288≤0.4PASS 3DH1Ant1Hop0.383160.12≤0.4PASS 3DH3Ant1Hop1.631580.258≤0.4PASS 3DH5Ant1Hop2.881180.34≤0.4PASS Page20of50 TestGraphs DH1_Ant1_Hop DH3_Ant1_Hop Page21of50 DH5_Ant1_Hop Page22of50 2DH1_Ant1_Hop 2DH3_Ant1_Hop Page23of50 2DH5_Ant1_Hop Page24of50 3DH1_Ant1_Hop 3DH3_Ant1_Hop Page25of50 3DH5_Ant1_Hop Page26of50 Page27of50 AppendixF:Numberofhoppingchannels TestResult TestModeAntennaChannelResult[Num]Limit[Num]Verdict DH5Ant1Hop79≥15PASS 2DH5Ant1Hop79≥15PASS 3DH5Ant1Hop79≥15PASS Page28of50 TestGraphs DH5_Ant1_Hop 2DH5_Ant1_Hop 3DH5_Ant1_Hop Page29of50 Page30of50 AppendixG:Bandedgemeasurements TestResult TestModeAntennaChNameChannel RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5Ant1 Low24020.32-53.87≤-19.68PASS High24800.15-59.71≤-19.85PASS LowHop0.27-59.77≤-19.73PASS HighHop0.21-62.19≤-19.79PASS 2DH5Ant1 Low2402-0.95-54.43≤-20.95PASS High2480-0.88-58.57≤-20.88PASS LowHop-4.28-60.05≤-24.28PASS HighHop-2.43-61.09≤-22.43PASS 3DH5Ant1 Low2402-3.23-57.29≤-23.23PASS High2480-2.54-59.12≤-22.54PASS LowHop-2.61-59.59≤-22.61PASS HighHop-2.54-61.39≤-22.54PASS Page31of50 TestGraphs DH5_Ant1_Low_2402 DH5_Ant1_High_2480 DH5_Ant1_Low_Hop Page32of50 DH5_Ant1_High_Hop 2DH5_Ant1_Low_2402 Page33of50 2DH5_Ant1_High_2480 2DH5_Ant1_Low_Hop 2DH5_Ant1_High_Hop Page34of50 3DH5_Ant1_Low_2402 3DH5_Ant1_High_2480 Page35of50 3DH5_Ant1_Low_Hop 3DH5_Ant1_High_Hop Page36of50 AppendixH:ConductedSpuriousEmission TestResult TestModeAntennaChannel FreqRange [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5Ant1 2402 Reference0.100.10---PASS 30~10000.10-70.27≤-19.9PASS 1000~265000.10-54.86≤-19.9PASS 2441 Reference0.120.12---PASS 30~10000.12-70.25≤-19.89PASS 1000~265000.12-55.16≤-19.89PASS 2480 Reference0.340.34---PASS 30~10000.34-70.17≤-19.66PASS 1000~265000.34-55.05≤-19.66PASS 2DH5Ant1 2402 Reference-1.74-1.74---PASS 30~1000-1.74-70.51≤-21.74PASS 1000~26500-1.74-45.55≤-21.74PASS 2441 Reference-1.71-1.71---PASS 30~1000-1.71-70.96≤-21.71PASS 1000~26500-1.71-55.57≤-21.71PASS 2480 Reference-1.11-1.11---PASS 30~1000-1.11-68.71≤-21.11PASS 1000~26500-1.11-55.48≤-21.11PASS 3DH5Ant1 2402 Reference-0.96-0.96---PASS 30~1000-0.96-70.02≤-20.96PASS 1000~26500-0.96-55.44≤-20.96PASS 2441 Reference-1.37-1.37---PASS 30~1000-1.37-70.68≤-21.37PASS 1000~26500-1.37-55.53≤-21.37PASS 2480 Reference-0.87-0.87---PASS 30~1000-0.87-70.48≤-20.87PASS 1000~26500-0.87-55.55≤-20.87PASS Page37of50 TestGraphs DH5_Ant1_2402_0~Reference DH5_Ant1_2402_30~1000 DH5_Ant1_2402_1000~26500 Page38of50 DH5_Ant1_2441_0~Reference DH5_Ant1_2441_30~1000 Page39of50 DH5_Ant1_2441_1000~26500 DH5_Ant1_2480_0~Reference DH5_Ant1_2480_30~1000 Page40of50 DH5_Ant1_2480_1000~26500 2DH5_Ant1_2402_0~Reference Page41of50 2DH5_Ant1_2402_30~1000 2DH5_Ant1_2402_1000~26500 2DH5_Ant1_2441_0~Reference Page42of50 2DH5_Ant1_2441_30~1000 2DH5_Ant1_2441_1000~26500 Page43of50 2DH5_Ant1_2480_0~Reference 2DH5_Ant1_2480_30~1000 2DH5_Ant1_2480_1000~26500 Page44of50 3DH5_Ant1_2402_0~Reference 3DH5_Ant1_2402_30~1000 Page45of50 3DH5_Ant1_2402_1000~26500 3DH5_Ant1_2441_0~Reference 3DH5_Ant1_2441_30~1000 Page46of50 3DH5_Ant1_2441_1000~26500 3DH5_Ant1_2480_0~Reference Page47of50 3DH5_Ant1_2480_30~1000 3DH5_Ant1_2480_1000~26500 Page48of50 AppendixI:DutyCycle TestResult TestModeAntennaChannel ONTime [ms] Period [ms] XDC [%] xFactor LimitVerdict DH5Ant124022.873.74 0.767 4 76.741.15---PASS 2DH5Ant124022.883.75 0.768 0 76.801.15---PASS 3DH5Ant124022.893.75 0.770 7 77.071.13---PASS 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Test Report

ReportNo.:18220WC20126301FCCID:2A7GB-U8Page1of39 Code:AB-RF-05-a FCCTESTREPORT ClientName:ShenzhenJiechenTechnologyCo.LTD Address: 502,Floor5,Building17,MakerTown,No.4109,Liuxian Avenue,PingshanCommunity,TaoyuanStreet,Nanshan District,Shenzhen,China ProductName:BluetoothHeadset Date:Jun.25,2022 ShenzhenAnbotekComplianceLaboratoryLimited ReportNo.:18220WC20126301FCCID:2A7GB-U8Page2of39 Code:AB-RF-05-a Contents 1.GeneralInformation ............................................................................................................................................... 5 1.1.ClientInformation ....................................................................................................................................... 5 1.2.DescriptionofDevice(EUT) ..................................................................................................................... 5 1.3.AuxiliaryEquipmentUsedDuringTest ................................................................................................... 6 1.4.DescriptionofTestModes ........................................................................................................................ 6 1.5.Listofchannels ........................................................................................................................................... 7 1.6.DescriptionOfTestSetup ......................................................................................................................... 8 1.7.TestEquipmentList .................................................................................................................................... 9 1.8.MeasurementUncertainty ....................................................................................................................... 10 1.9.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 .....................................................................................…

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Test Setup Photos

FCCID:2A7GB-U8 PhotoofConductedEmissionMeasurement PhotoofRadiationEmissionTest