2AITF-BTDG-C51Type-C Wireless Audio Transmitter

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Date:04/17/2018VCB_F-01:OperatingProceduresForm–FCCAuthorizationv02Page1of1 AvantreeTechnologyCo.,Ltd. FederalCommunicationsCommission AuthorizationandEvaluationDivision 1435OaklandMillsRoad Columbia,MD21046 Date:2020/4/15 SUBJECT:FCCApplicationfor(FCCID:2AITF-BTDG-C51) ToWhomItMayConcern: We,theundersigned,herebyauthorizeAaronMain ShenzhenHuaxiaTesting TechnologyCo.,Ltd at 1F.,BlockAofTongshengTechnologyBuilding,HuahuiRoad, DalangStreet,LonghuaDistrict,Shenzhen,Chinaonourbehalf,toapplytotheFederal CommunicationsCommissiononourequipment.Anyandallactscarriedoutby ShenzhenHuaxiaTestingTechnologyCo.,Ltdonourbehalfshallhavethesame effectasactsofourown. ThisistoadvisethatweareinfullcompliancewiththeAnti-DrugAbuseAct.We, theapplicant,arenotsubjecttoadenialoffederalbenefitspursuanttoSection 5301oftheAnti-DrugActof1988,21USC853a,andnopartytotheapplicationis subjecttoadenialoffederalbenefitspursuanttothatsection. Sincerely, (MustbesignedbythepersonthatislistedontheFCCWebsite) Signature: Contactname:NisaWang Companyname:AvantreeTechnologyCo.,Ltd. Address:The4thFloor,YuepengBuilding,No.1019JiabinRd,LuohuDistrict,Shenzhen,China

FCC ID:2AITF-BTDG-C51 FCC ID:2AITF-BTDG-C51 FCC ID:2AITF-BTDG-C51 FCC ID:2AITF-BTDG-C51

FCC ID:2AITF-BTDG-C51 FCC ID:2AITF-BTDG-C51 BT ANT

Shenzhen Huaxia Testing Technology Co., Ltd 1F., Block A of Tongsheng Technology Building,Huahui Road, Dalang Street, Longhua District, Shenzhen, China Telephone: +86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com Report Template Version: V04 Repor tTemplate Revision Date: 2018-07-06 RF Exposure Evaluation Report The test report is effective only with both signature and specialized stamp, The result(s) shown in this report refer only to the sample(s) tested. Without written approval of CQA, this report can’t be reproduced except in full. Report No. : CQASZ20200400251E-02 Applicant: Avantree Technology Co., Ltd. Address of Applicant:The 4th Floor, Yuepeng Building, No.1019 Jiabin Rd, Luohu District, Shenzhen, China Equipment Under Test (EUT): EUT Name:Type-C Wireless Audio Transmitter Model No.:BTDG-C51 Brand Name: Avantree FCC ID:2AITF-BTDG-C51 Standards: 47 CFR Part 1.1307 47 CFR Part 2.1093 KDB447498D01 General RF Exposure Guidance v06 Date of Receipt:2020-04-15 Date of Test:2020-04-15 to 2020-04-21 Date of Issue:2020-04-21 Test Result :PASS* *In the configuration tested, the EUT complied with the standards specified above Tested By： (Tom Chen) Reviewed By: (Sheek Luo) Approved By: ( Jack Ai) Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20200400251E-02 Page: 2 of 6 1Version Revision History Of Report ReportNo.Version Description Issue Date CQASZ20200400251E-02Rev.01 Initial report 2020-04-21 Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20200400251E-02 Page: 3 of 6 2 Contents Page 1 VERSION......................................................................................................................................................................2 2CONTENTS..................................................................................................................................................................3 3 GENERAL INFORMATION........................................................................................................................................4 3.1 C LIENTINFORMATION................................................................................................................................................4 3.2 G ENERALDESCRIPTION OFEUT................................................................................................................................4 4 SAR EVALUATION.....................................................................................................................................................5 4.1 RF E XPOSURECOMPLIANCEREQUIREMENT..............................................................................................................5 4.1.1 Standard Requirement..................................................................................................................................5 4.1.2 Limits................................................................................................................................................................5 4.1.3 EUT RF Exposure..........................................................................................................................................6 Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20200400251E-02 Page: 4 of 6 3 General Information 3.1 Client Information Applicant: Avantree Technology Co., Ltd. Address of Applicant: The 4th Floor, Yuepeng Building, No.1019 Jiabin Rd, Luohu District, Shenzhen, China Manufacturer: Avantree Technology Co., Ltd. Address of Manufacturer: The 4th Floor, Yuepeng Building, No.1019 Jiabin Rd, Luohu District, Shenzhen, China 3.2 General Description of EUT Product Name: Type-C Wireless Audio Transmitter Model No.: BTDG-C51 Trade Mark:Avantree Hardware Version: V2 Software Version: C51-V0 Operation Frequency: 2402MHz~2480MHz Bluetooth Version: V5.0 Modulation Technique: Frequency Hopping Spread Spectrum(FHSS) Modulation Type: GFSK,π/4DQPSK, 8DPSK Transfer Rate:1Mbps/2Mbps/3Mbps Number of Channel: 79 Hopping Channel Type: Adaptive Frequency Hopping systems Product Type:MobilePortableFix Location Test Software of EUT: Blue test3 (manufacturer declare ) Antenna Type: Ceramic antenna Antenna Gain: 2.0dBi Power Supply: DC5V Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20200400251E-02 Page: 5 of 6 4 SAR Evaluation 4.1 RF Exposure Compliance Requirement 4.1.1 Standard Requirement According to KDB447498D01 General RF Exposure Guidance v06 4.3.1. Standalone SAR test exclusion considerations Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Exclusion Threshold condition, listed below, is satisfied. 4.1.2 Limits The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] · [√f(GHz)]≤3.0 for 1-g SAR and≤7.5 for 10-g extremity SAR, where f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation 17 The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is≤50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20200400251E-02 Page: 6 of 6 4.1.3EUT RF Exposure Measurement Data GFSK mode Test channelPeak Output Power (dBm) Tune up tolerance (dBm) Maximum tune-up Power (dBm)(mW) Lowest(2402MHz)-0.620-1.5±1-0.50.891 Middle (2441MHz)-0.600-1.5±1-0.50.891 Highest(2480MHz)0.380-0.5±10.51.122 π/4DQPSK mode Test channelPeak Output Power (dBm) Tune up tolerance …

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Shenzhen Huaxia Testing Technology Co., Ltd 1F., Block A of Tongsheng Technology Building,Huahui Road, Dalang Street, Longhua District, Shenzhen, China Telephone: +86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com Report Template Version: V04 Report Template Revision Date: 2018-07-06 Test Report The test report is effective only with both signature and specialized stamp, The result(s) shown in this report refer only to the sample(s) tested. Without written approval of CQA, this report can’t be reproduced except in full. Report No. : CQASZ20200400251E-01 Applicant: Avantree Technology Co., Ltd. Address of Applicant:The 4th Floor, Yuepeng Building, No.1019 Jiabin Rd, Luohu District, Shenzhen, China Equipment Under Test (EUT): EUT Name:Type-C Wireless Audio Transmitter Model No.:BTDG-C51 Brand Name: Avantree FCC ID:2AITF-BTDG-C51 Standards:47 CFR Part 15, Subpart C Date of Receipt:2020-04-15 Date of Test:2020-04-15 to 2020-04-21 Date of Issue:2020-04-21 Test Result :PASS* *In the configuration tested, the EUT complied with the standards specified above Tested By： (Tom Chen) Reviewed By: (Sheek Luo) Approved By: ( Jack Ai) Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20200400251E-01 Page: 2 of 100 1Version Revision History Of Report Report No.Version Description Issue Date CQASZ20200400251E-01Rev.01 Initial report 2020-04-21 Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20200400251E-01 Page: 3 of 100 2 Test Summary Test ItemTest RequirementTest methodResult Antenna Requirement 47 CFR Part 15, Subpart C Section 15.203/15.247 (c) ANSI C63.10 (2013)PASS AC Power Line Conducted Emission 47 CFR Part 15, Subpart C Section 15.207 ANSI C63.10 (2013)PASS Conducted Peak Output Power 47 CFR Part 15, Subpart C Section 15.247 (b)(1) ANSI C63.10 (2013)PASS 20dB Occupied Bandwidth 47 CFR Part 15, Subpart C Section 15.247 (a)(1) ANSI C63.10 (2013)PASS Carrier Frequencies Separation 47 CFR Part 15, Subpart C Section 15.247 (a)(1) ANSI C63.10 (2013)PASS Hopping Channel Number 47 CFR Part 15, Subpart C Section 15.247 (a)(1) ANSI C63.10 (2013)PASS Dwell Time 47 CFR Part 15, Subpart C Section 15.247 (a)(1) ANSI C63.10 (2013)PASS Pseudorandom Frequency Hopping Sequence 47 CFR Part 15, Subpart C Section 15.247(b)(4)&TCB Exclusion List (7 July 2002) ANSI C63.10 (2013)PASS Band-edge for RF Conducted Emissions 47 CFR Part 15, Subpart C Section 15.247(d) ANSI C63.10 (2013)PASS RF Conducted Spurious Emissions 47 CFR Part 15, Subpart C Section 15.247(d) ANSI C63.10 (2013)PASS Radiated Spurious emissions 47 CFR Part 15, Subpart C Section 15.205/15.209 ANSI C63.10 (2013)PASS Restricted bands around fundamental frequency (Radiated Emission) 47 CFR Part 15, Subpart C Section 15.205/15.209 ANSI C63.10 (2013)PASS Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20200400251E-01 Page: 4 of 100 3 Contents Page 1 VERSION....................................................................................................................................................................2 2 TEST SUMMARY......................................................................................................................................................3 3CONTENTS................................................................................................................................................................4 4 GENERAL INFORMATION.....................................................................................................................................5 4.1 C LIENTINFORMATION...........................................................................................................................................5 4.2 G ENERALDESCRIPTION OFEUT...........................................................................................................................5 4.3 A DDITIONALINSTRUCTIONS..................................................................................................................................7 4.4 T ESTENVIRONMENT..............................................................................................................................................8 4.5 D ESCRIPTION OFSUPPORTUNITS..........................................................................................................................8 4.6 S TATEMENT OF THE MEASUREMENT UNCERTAINTY..............................................................................................9 4.7 T ESTLOCATION...................................................................................................................................................10 4.8 T ESTFACILITY.....................................................................................................................................................10 4.9 A BNORMALITIES FROMSTANDARDCONDITIONS................................................................................................10 4.10 O THERINFORMATIONREQUESTED BY THECUSTOMER......................................................................................10 4.11 E QUIPMENTLIST................................................................................................................................................. 11 5 TEST RESULTS AND MEASUREMENT DATA............................................................................................... 12 5.1 A NTENNAREQUIREMENT.................................................................................................................................... 12 5.2 C ONDUCTEDEMISSIONS......................................................................................................................................13 5.3 C ONDUCTEDPEAKOUTPUTPOWER....................................................................................................................17 5.4 20 DBOCCUPYBANDWIDTH.....................................................................................................................…

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FCC ID:2AITF-BTDG-C51 1 Photographs - EUT Test Setup 1.1 Radiated Emission 9KHz~30MHz: 30MHz~1GHz: FCC ID:2AITF-BTDG-C51 Above 1GHz: 1.2 Conducted Emission