OSDAMIRON100True Wireless Earphones

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218-240314 Production date: 24-29 R3A829 RoHS 刘 丽 设 计 DRAWN BY 2024.07.05 47409188 审 核 CHECKED BY 核 准 APPVE BY 零件料号 PART NO. 单 位 METRIC 比 例 SCALE 描述 Describe 机 型 MODEL NO. BE-1141 图纸名称 DWG NAME 认证标签 绘图视角 PROJECTION MM 1:1 3NOD DIGITAL TECHNOLOGY ■REACH■RoHs■CA65CFRl303PFOSPAHsFORMALDEHYDE/甲醛≤***PPM HALOGEN FREE/无卤 THIS DRAWING，AND IT'S INHERANT DESIGN CONCEPTS，ARE THE PROPERTY OF 3NOD AND AS SUCH MAY NOT BE COPIED，REPRODUCED，0R GIVEN TO THIRD PARTIES WITHOUT THE WRITTEN CONSENT OF 3NOD． 技术要求: 1. 图中标注 尺寸为FAI尺寸。 2. 图中标注 尺寸为重点检验尺寸, 要求CPK≥1。 FAI ** * FORM NO:FM-QMP005-36 A.0 版本/Rev修订描述/REVISION DESCRIPTION V0.12024.07.05 第一次发行 修订/REVISED BY日期/DATE 控制复印 认证标签：122*42mm 80g 铜板纸 1C印刷 + 防刮哑膜 + 背胶 (180°剥离力10-100gf/25mm, ≥3N/cm), RoHS REACH CA65 TSCA 无矿物油墨 要求 低温-20°C高温70°C 粘贴后无起翘、脱落、溢胶。 生产依据实际当年周期制作， 例如：2024年第29周生产， 则印刷：Production date: 24-29 下单时PMC需备注实际生产“当年周期”需求

1 Antenna Part Specification Project name： BE-1141 Material category： FPC Version： V1.0 Date： 2024.04.15 Supplier Address： 505-506 ,ABlock,Donglian Building,Chuangye 2 road,Baoan District,Shenzhen,Guangdong,P.R china Supplier： Shenzhen Cicent Communication Technology Co., Ltd. Contact information： Arkin/13632320627 2 Contents I：The report of passive data .................................................................................................... 3 Change record Compile / change date Reason for change Changed content Version 2024.04.15 First edition First edition V1.0 II：Structure file ........................................................................................................................ 9 3 I：The report of passive data Angilent E5071C L-Antenna S11 parameters 4 R-Antenna S11 parameters 5 Efficiency： L Frequency （MHz） Gain (dBi) Efficiency (dB ) Efficiency（%） 2400 -7.2 -10.2 9.6 2410 -7.0 -10.1 9.8 2420 -6.7 -9.7 10.7 2430 -6.5 -9.5 11.3 2440 -6.6 -9.7 10.8 2450 -6.8 -9.8 10.5 2460 -7.0 -10.0 10.0 2470 -7.3 -10.3 9.4 2480 -7.6 -10.5 8.9 Average value -7.0 -10.0 10.1 R Frequency （MHz） Gain (dBi) Efficiency (dB ) Efficiency（%） 2400 -6.9 -9.7 10.7 2410 -6.8 -9.7 10.7 2420 -6.9 -9.8 10.6 2430 -6.8 -9.6 10.9 2440 -7.0 -9.8 10.6 2450 -6.9 -9.6 11.0 2460 -6.9 -9.4 11.4 2470 -7.4 -9.8 10.4 2480 -7.7 -10.1 9.7 Average value -7.0 -9.7 10.7 6 Antenna radiation pattern(L): Theta=90° Phi=0° Phi=90° 7 Antenna radiation pattern(R): Theta=90° Phi=0° Phi=90° 8 Antenna radiation pattern 3D(L): Antenna radiation pattern 3D(R): 11 II：Structure file 12

Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE24032904-2E14 TRF No.: RT-4-E-02-601 FCC SAR Test Report Ver.1.1 Page 1 of 28 FCC SAR TEST REPORT Applicant : Beyerdynamic Address of Applicant : 56 Central Avenue, Farmingdale, New York 11735, United States Manufacturer : Beyerdynamic Address of Manufacturer : 56 Central Avenue, Farmingdale, New York 11735, United States Equipment under Test : True Wireless Earphones Model No. : AMIRON 100 FCC ID : OSDAMIRON100 Test Standard(s) : Test Standard Used: IEEE Std. 1528-2013; IEC/IEEE 62209-1528:2020 FCC Rules and Regulations: 47 CFR § 2.1093 Test Procedure Used: KDB447498 D04 v01, KDB 865664 D01 v01r04, KDB 865664 D02 v01r02 Report No. : DDT-RE24032904-2E14 Issue Date : 2024/04/08 Issue By : Guangdong Dongdian Testing Service Co., Ltd. Address of Laboratory : Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808 Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE24032904-2E14 TRF No.: RT-4-E-02-601 FCC SAR Test Report Ver.1.1 Page 2 of 28 Table of Contents 1. General test information ...................................................................................................... 6 1.1. Description of EUT .............................................................................................................. 6 1.2. Accessories of EUT ............................................................................................................. 6 1.3. Assistant equipment used for test ....................................................................................... 6 1.4. Block diagram of EUT configuration for test ....................................................................... 6 1.5. Test environment conditions ............................................................................................... 7 1.6. Test laboratory .................................................................................................................... 7 2. Summary of test results ...................................................................................................... 8 2.1. Report SAR results ............................................................................................................. 8 2.2. RF exposure limits .............................................................................................................. 8 3. SAR measurements system configuration .......................................................................... 9 3.1. The SAR measurement system .......................................................................................... 9 3.2. Isotropic E-field probe EX3DV4 ........................................................................................ 10 3.3. SAM twin phantom ............................................................................................................ 10 3.4. ELI phantom ...................................................................................................................... 11 3.5. Data acquisition electronics (DAE) ................................................................................... 11 3.6. Device holder for transmitters ........................................................................................... 12 4. Measurement procedure ................................................................................................... 13 4.1. Scanning procedure .......................................................................................................... 13 5. Description of test position ................................................................................................ 15 5.1. Body-worn accessory configurations ................................................................................ 15 5.2. Extremity exposure configurations .................................................................................... 16 6. RF exposure conditions .................................................................................................... 17 6.1. EUT Test sides .................................................................................................................. 17 6.2. Standalone SAR test exclusion considerations ................................................................ 17 7. SAR system verification procedure ................................................................................... 18 7.1. Tissue simulate liquid ........................................................................................................ 18 7.1.1. Target dielectric properties of head tissue-equivalent material ........................................ 18 7.1.2. Measurement for tissue simulate liquid ............................................................................ 18 7.2. SAR system validation ...................................................................................................... 20 7.2.1. Justification for extended SAR dipole calibrations ............................................................ 21 7.2.2. Validation test setup photograph ...................................................................................... 21 7.2.3. Summary system validation results .................................................................................. 22 7.2.4. Detailed system validation results ..................................................................................... 22 8. Equipment list .................................................................................................................... 23 9. Measurement uncertainty .................................................................................................. 24 Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE24032904-2E14 TRF No.: RT-4-E-02-601 FCC SAR Test Report Ver.1.1 Page 3 of 28 10. Test results and measurement data .......................................................…

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Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 1 of 3 Appendix A System Validation Plots Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 2 of 3 Table of Contents 1. D2450V2-SN: 904 Validation Plot ..................................................................................... 3 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 3 of 3 1. D2450V2-SN: 904 Validation Plot

Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 1 of 4 Appendix B Highest Test Plots Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 2 of 4 Table of Contents 1. BT Head-worn 0mm SAR ....................................................................................................... 3 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 3 of 4 1. BT Head-worn 0mm SAR Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 4 of 4

Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 1 of 30 Appendix C Calibration Certification Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 2 of 30 Table of Contents 1. D2450V2-SN: 904 Calibration certification ............................................................................. 3 2. D5GHzV2-SN: 1148 Calibration certification .......................................................................... 9 3. DAE4-SN: 1366 Calibration certification............................................................................... 19 4. EX3DV4-SN: 3906 Calibration certification .......................................................................... 22 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 3 of 30 1. D2450V2-SN: 904 Calibration certification Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 4 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 5 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 6 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 7 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 8 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 9 of 30 2. D5GHzV2-SN: 1148 Calibration certification Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 10 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 11 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 12 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 13 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 14 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 15 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 16 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 17 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 18 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 19 of 30 3. DAE4-SN: 1366 Calibration certification Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 20 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 21 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 22 of 30 4. EX3DV4-SN: 3906 Calibration certification Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 23 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 24 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 25 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 26 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 27 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 28 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 29 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 30 of 30

Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 1 of 8 Appendix D Test setup photograph Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 2 of 8 Table of Contents 1. 2.4G Tissue Head-worn Photograph ...................................................................................... 3 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 3 of 8 1. 2.4G Tissue Head-worn Photograph L Top Side-0mm L Bottom Side-0mm Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 4 of 8 L Left Side-0mm L Right Side-0mm Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 5 of 8 L Front side-0mm L Back Side-0mm Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 6 of 8 R Top Side-0mm R Bottom Side-0mm Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 7 of 8 R Left Side-0mm R Right Side-0mm Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24032904-2E14 Page 8 of 8 R Front side-0mm R Back Side-0mm

Guangdong Dongdian Testing ServiceCo.,Ltd. Page 1 of 5 Appendix E Dipole Antenna self-calibration Guangdong Dongdian Testing ServiceCo.,Ltd. Page 2 of 5 Table of Contents 1. Calibration Date ...................................................................................................................... 3 2. Calibration Items ..................................................................................................................... 3 3. Standards ................................................................................................................................ 5 4. Laboratory ............................................................................................................................... 5 5. Calibration Results .................................................................................................................. 5 Guangdong Dongdian Testing ServiceCo.,Ltd. Page 3 of 5 1. Calibration Date Calibration Date Oct.20,2023, Due to Oct.19,2024 2. Calibration Items Dipole Antenna self-calibration 1、 Calibration Method Immediate re-calibration is required for the following conditions. 1) According to KDB 865664 D01, When the most recent return-loss result, measured at least annually, deviates by more than 20% from the previous measurement (i.e. value in dB  0.2) or not meeting the required 20 dB minimum return-loss requirement. 2) When the most recent measurement of the real or imaginary parts of the impedance, measured at least annually, deviates by more than 5 Ω from the previous measurement. 3）When the measured SAR deviates from the calibrated SAR value by more than 10% due to changes in physical, mechanical, electrical or other relevant dipole conditions; i.e., the error is not introduced by incorrect measurement procedures or other issues relating to the SAR measurement system. 2、 Calibration Purpose Demonstrate that SAR target, the impedance and return loss of the dipole remain stable as required 3、 Test The Product Manufacturer Speag Name 2450MHz Dipole antenna Model number D2450V2 Environment temperature 20.8°C Look pictures As shown in figure 1 Manufacturer Speag Name 5GHz Dipole antenna Model numbe D5GHZV2 Environment temperature 20.8°C Look pictures As shown in figure 2 Guangdong Dongdian Testing ServiceCo.,Ltd. Page 4 of 5 Figure 1 Test signal source Figure 2 Test signal source Guangdong Dongdian Testing ServiceCo.,Ltd. Page 5 of 5 3. Standards This antenna calibration is conducted according to KDB 865664 D01 4. Laboratory The following personnel participated in this laboratory: Table 1： Participate in the measurement laboratory Laboratory Name Temp°C Test person Guangdong Dongdian Testing Service Co., Ltd. 20.8°C Johnson Huang 5. Calibration Results The quality control test results are shown in Table 2 and Table 3, and the detailed test data is in the attachment Table 2 Calibrated Antenna Target Return loss Test Return loss Deviation Result 2450 -28.825 -28.394 1.50% OK 5200 -24.780 -20.041 19.12% OK 5300 -24.151 -27.179 12.54% OK 5500 -23.082 -25.183 9.10% OK 5600 -22.239 -23.471 5.54% OK Table 3 Calibrated Antenna Target Impedance （Real） Target Impedance （Imaginary Test Impedance （Real） Test Impedance （Imaginary） Deviation （Real） Deviation （Imaginary） Result 2450 53.391 1.586 50.607 2.878 2.784 1.292 OK 5200 49.477 -8.009 52.310 -8.448 2.833 0.439 OK 5300 54.645 -5.723 49.946 -3.293 4.699 2.43 OK 5500 56.887 -4.538 52.061 -5.591 4.826 1.053 OK 5600 56.214 -5.378 52.520 -4.505 3.694 0.873 OK

Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT- RE24032904-2E02 TRF No.: RT-4-E-02-004 FCC ID&ISED Report BLE-TWS Ver.1.1 Page 1 of 113 FCC CERTIFICATION TEST REPORT Applicant : Beyerdynamic Address of Applicant : 56 Central Avenue, Farmingdale, New York 11735, United States Manufacturer : Beyerdynamic Address of Manufacturer : 56 Central Avenue, Farmingdale, New York 11735, United States Equipment under Test : True Wireless Earphones Model No. : AMIRON 100 FCC ID : OSDAMIRON100 Test Standard(s) : FCC Rules and Regulations Part 15 Subpart C, ANSI C63.10:2013 Report No. : DDT-RE24032904-2E02 Issue Date : 2024/04/16 Issue By : Guangdong Dongdian Testing Service Co., Ltd. Address of Laboratory : Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808 Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT- RE24032904-2E02 TRF No.: RT-4-E-02-004 FCC ID&ISED Report BLE-TWS Ver.1.1 Page 2 of 113 Table of Contents Test report declares............................................................................................................4 1. Summary of Test Results .................................................................................................... 6 2. General Test Information .................................................................................................... 7 2.1. Description of EUT .............................................................................................................. 7 2.2. Accessories of EUT ............................................................................................................. 8 2.3. Assistant equipment used for test ....................................................................................... 8 2.4. Block diagram of EUT configuration for test ....................................................................... 8 2.5. Test environment conditions ............................................................................................... 9 2.6. Deviations of test standard.................................................................................................. 9 2.7. Test laboratory .................................................................................................................... 9 2.8. Measurement uncertainty .................................................................................................. 10 3. Equipment Used During Conductive Test ......................................................................... 11 4. 6 dB Bandwidth ................................................................................................................. 12 4.1. Block diagram of test setup ............................................................................................... 12 4.2. Limits ................................................................................................................................. 12 4.3. Test procedure .................................................................................................................. 12 4.4. Test result .......................................................................................................................... 13 4.5. Test graphs ....................................................................................................................... 14 6. Maximum Peak Output Power .......................................................................................... 18 6.1. Block diagram of test setup ............................................................................................... 18 6.2. Limits ................................................................................................................................. 18 6.3. Test procedure .................................................................................................................. 18 6.4. Test result .......................................................................................................................... 19 6.5. Test graphs ....................................................................................................................... 20 7. Power Spectral Density ..................................................................................................... 24 7.1. Block diagram of test setup ............................................................................................... 24 7.2. Limits ................................................................................................................................. 24 7.3. Test procedure .................................................................................................................. 24 7.4. Test result .......................................................................................................................... 25 7.5. Test graphs ....................................................................................................................... 26 8. Band Edge Compliance (Conducted Method) .................................................................. 30 8.1. Block diagram of test setup ............................................................................................... 30 8.2. Limits ................................................................................................................................. 30 8.3. Test procedure .................................................................................................................. 30 8.4. Test result .......................................................................................................................... 30 8.5. Test graphs ....................................................................................................................... 31 9. RF Conducted Spurious Emissions .................................................................................. 34 Guangdong Dongdian Testing Servi…

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Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT- RE24032904-2E02 TRF No.: RT-4-E-02-004 FCC ID&ISED Report BLE-TWS Ver.1.1 Page 56 of 113 11.3. Limit (1) FCC 15.205 Restricted frequency band MHz MHz MHz GHz 0.090-0.110 16.42-16.423 399.9-410 4.5-5.15 1 0.495-0.505 16.69475-16.69525 608-614 5.35-5.46 2.1735-2.1905 16.80425-16.80475 960-1240 7.25-7.75 4.125-4.128 25.5-25.67 1300-1427 8.025-8.5 4.1772&4.17775 37.5-38.25 1435-1626.5 9.0-9.2 4.2072&4.20775 73-74.6 1645.5-1646.5 9.3-9.5 6.215-6.218 74.8-75.2 1660-1710 10.6-12.7 6.26775-6.26825 108-121.94 1718.8-1722.2 13.25-13.4 6.31175-6.31225 123-138 2200-2300 14.47-14.5 8.291-8.294 149.9-150.05 2310-2390 15.35-16.2 8.362-8.366 156.52475-156.52525 2483.5-2500 17.7-21.4 8.37625-8.38675 156.7-156.9 2690-2900 22.01-23.12 8.41425-8.41475 162.0125-167.17 3260-3267 23.6-24.0 12.29-12.293 167.72-173.2 3332-3339 31.2-31.8 12.51975-12.52025 240-285 3345.8-3358 36.43-36.5 12.57675-12.57725 322-335.4 3600-4400 ( 2 ) 13.36-13.41 1 Until February 1, 1999, this restricted band shall be 0.490-0.510 MHz. 2 Above 38.6 (2) FCC 15.209 Limit FREQUENCY MHz DISTANCE Meters FIELD STRENGTHS LIMIT V/m dB(V)/m 0.009 ~ 0.490 300 2400/F(kHz) 67.6-20log(F) 0.490 ~ 1.705 30 24000/F(kHz) 87.6-20log(F) 1.705 ~ 30.0 30 30 29.54 30 ~ 88 3 100 40.0 88 ~ 216 3 150 43.5 216 ~ 960 3 200 46.0 960 ~ 1000 3 500 54.0 Above 1000 3 74.0 dB(V)/m (Peak) 54.0 dB(V)/m (Average) Note: (1) The emission limits shown in the above table are based on measurements employing a CISPR QP detector except for the frequency bands 9 - 90 kHz, 110 - 490 kHz and above 1000 MHz. Radiated emissions limits in these three bands are based on measurements employing an average detector. Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT- RE24032904-2E02 TRF No.: RT-4-E-02-004 FCC ID&ISED Report BLE-TWS Ver.1.1 Page 57 of 113 (2) At frequencies below 30 MHz, measurement may be performed at a distance closer than that specified, and the limit at closer measurement distance can be extrapolated by below formula: Limit 3m (dBuV/m) = Limit 30m (dBuV/m) + 40Log(30m/3m) (3) Limit for this EUT The emissions appearing within 15.205 restricted frequency bands shall not exceed the limits shown in 15.209, all the other emissions shall be at least 20 dB below the fundamental emissions or comply with 15.209 limits. 11.4. Test Procedure (1) EUT was placed on a non-metallic table, 80 cm above the ground plane inside a semi-anechoic chamber for below 1 G and 150 cm above the ground plane inside a semi-anechoic chamber for above 1 G. (2) Test antenna was located 3 m from the EUT on an adjustable mast, and the antenna used as below table. Test frequency range Test antenna used Test antenna distance 9 kHz - 30 MHz Active Loop antenna 3 m 30 MHz - 1 GHz Trilog Broadband Antenna 3 m 1 GHz - 18 GHz Double Ridged Horn Antenna (1 GHz - 18 GHz) 3 m 18 GHz - 40 GHz Horn Antenna (18 GHz - 40 GHz) 1 m According ANSI C63.10:2013 clause 6.4.6 and 6.5.3, for measurements below 30 MHz, Antenna was located 3 m from EUT, the loop antenna was positioned in three antenna orientations (parallel, perpendicular, and round-parallel), for each measurement antenna alignment, the EUT shall be rotated through 0°to 360°on a turntable, and the lowest height of the magnetic antenna shall be 1 m above the ground. For measurement above 30 MHz, the Trilog Broadband Antenna or Horn Antenna was located 3 m from EUT, Measurements were made with the antenna positioned in both the horizontal and vertical planes of Polarization, and the measurement antenna was varied from 1 m to 4 m. in height above the reference ground plane to obtain the maximum signal strength. (3) Below pre-scan procedure was first performed in order to find prominent frequency spectrum radiated emissions from 9 kHz to 25 GHz: (a) Scanning the peak frequency spectrum with the antenna specified in step (3), and the EUT was rotated 360 degree, the antenna height was varied from 1 m to 4 m (Except loop antenna, it’s fixed 1 m above ground.) (b) Change work frequency or channel of device if practicable. (c) Change modulation type of device if practicable. (d) Change power supply range from 85% to 115% of the rated supply voltage (e) Rotated EUT though three orthogonal axes to determine the attitude of EUT arrangement produces highest emissions. Spectrum frequency from 9 kHz to 25 GHz (tenth harmonic of fundamental frequency) was investigated, and no any obvious emission were detected from 9 kHz to 30 MHz and 18 GHz to 25 Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT- RE24032904-2E02 TRF No.: RT-4-E-02-004 FCC ID&ISED Report BLE-TWS Ver.1.1 Page 58 of 113 GHz, so below final test was performed with frequency range from 30 MHz to 18 GHz. (4) For final emissions measurements at each frequency of interest, the EUT was rotated and the antenna height was varied between 1 m and 4 m in order to maximize the emission. Measurements in both horizontal and vertical polarities were made and the data was recorded. In order to find the maximum emission, the relative positions of equipments and all of the interface cables were changed according to ANSI C63.10:2013 on Radiated Emission test. (5) The emissions from 9 kHz to 1 GHz were measured based on CISPR QP detector except for the frequency bands 9 - 90 kHz, 110 - 490 kHz, for emissions from 9 kHz - 90 kHz, 110 kHz - 490 kHz and above 1 GHz were measured based on average detector, for emissions above 1 GHz, peak emissions also be measured and need comply with Peak limit. (6) The emissions from 9 kHz to 1 GHz, QP or average values were measured with EMI receiver with below RBW Frequency band RBW 9 kHz - 150 kHz 200 Hz 150 kHz - 30 MHz 9 kHz 30 MHz - 1 GHz 120 kHz (7) For emissions above 1GHz, both Peak and Average level were measured with Spectrum Analyzer, and the RBW is set at 1 MHz, VBW is set at 3 MHz for Peak measure; According ANSI C63.10:2013 clause 4.1.4.2.2 procedure for average measure. (8) For portable device, X a…

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