ELECTROMAGNETIC EMISSIONS COMPLIANCE REPORT
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DOKE COMMUNICATION (HK) LIMITED AIRBUDS10 Wireless Earphone 2A7DX-AIRBUDS10 2A7DXAIRBUDS10 airbuds10
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Document DEVICE REPORTGetApplicationAttachment.html?id=6430076Report No.: STR230130002001E RADIO TEST REPORT FCC ID:2A7DX-AIRBUDS10 Product: Wireless Earphone Trade Mark: Blackview Model No.: AirBuds 10 Family Model: N/A Report No.: STR230130002001E Issue Date: Feb 28, 2023 Prepared for DOKE COMMUNICATION (HK) LIMITED RM 1902 EASEY COMM BLDG 253-261 HENNESSY ROAD WANCHAI HK CHINA Prepared by Shenzhen NTEK Testing Technology Co., Ltd. 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street Bao'an District, Shenzhen 518126 P.R. China Tel. 400-800-6106, 0755-2320 0050, 0755-2320 0090 Website: http://www.ntek.org.cn Version.1.3 Page 1 of 114 Report No.: STR230130002001E TABLE OF CONTENTS TABLE OF CONTENTS................................................................................................................................................2 1 TEST RESULT CERTIFICATION ...................................................................................................................... 4 2 SUMMARY OF TEST RESULTS.........................................................................................................................5 3 FACILITIES AND ACCREDITATIONS ............................................................................................................. 6 3.1 FACILITIES..................................................................................................................................................... 6 3.2 LABORATORY ACCREDITATIONS AND LISTINGS ................................................................................. 6 3.3 MEASUREMENT UNCERTAINTY...............................................................................................................6 4 GENERAL DESCRIPTION OF EUT .................................................................................................................. 7 REVISION HISTORY.....................................................................................................................................................8 5 DESCRIPTION OF TEST MODES ..................................................................................................................... 9 6 SETUP OF EQUIPMENT UNDER TEST ......................................................................................................... 10 6.1 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM..................................................................... 10 6.2 SUPPORT EQUIPMENT............................................................................................................................... 11 6.3 EQUIPMENTS LIST FOR ALL TEST ITEMS.............................................................................................. 12 7 TEST REQUIREMENTS .................................................................................................................................... 14 7.1 CONDUCTED EMISSIONS TEST ............................................................................................................... 14 7.1.1 Applicable Standard .................................................................................................................................. 14 7.1.2 Conformance Limit ................................................................................................................................... 14 7.1.3 Test Configuration .................................................................................................................................... 14 7.1.4 Test Procedure ........................................................................................................................................... 14 7.1.5 Test Results ................................................................................................................................................ 14 7.1.6 Test Results ................................................................................................................................................ 15 7.2 RADIATED SPURIOUS EMISSION ............................................................................................................ 17 7.2.1 Applicable Standard .................................................................................................................................. 17 7.2.2 Conformance Limit ................................................................................................................................... 17 7.2.3 Measuring Instruments............................................................................................................................. 18 7.2.4 Test Configuration .................................................................................................................................... 18 7.2.5 Test Procedure ........................................................................................................................................... 19 7.2.6 Test Results ................................................................................................................................................ 20 7.3 NUMBER OF HOPPING CHANNEL........................................................................................................... 31 7.3.1 Applicable Standard .................................................................................................................................. 31 7.3.2 Conformance Limit ................................................................................................................................... 31 7.3.3 Measuring Instruments............................................................................................................................. 31 7.3.4 Test Setup .................................................................................................................................................. 31 7.3.5 Test Procedure ........................................................................................................................................... 31 7.3.6 Test Results ................................................................................................................................................ 31 7.4 HOPPING CHANNEL SEPARATION MEASUREMENT ........................................................................... 32 7.4.1 Applicable Standard .................................................................................................................................. 32 7.4.2 Conformance Limit ................................................................................................................................... 32 7.4.3 Measuring Instruments............................................................................................................................. 32 7.4.4 Test Setup .................................................................................................................................................. 32 7.4.5 Test Procedure ........................................................................................................................................... 32 7.4.6 Test Results ................................................................................................................................................ 32 7.5 AVERAGE TIME OF OCCUPANCY (DWELL TIME) ................................................................................ 33 7.5.1 Applicable Standard .................................................................................................................................. 33 7.5.2 Conformance Limit ................................................................................................................................... 33 7.5.3 Measuring Instruments............................................................................................................................. 33 7.5.4 Test Setup .................................................................................................................................................. 33 7.5.5 Test Procedure ........................................................................................................................................... 33 7.5.6 Test Results ................................................................................................................................................ 34 Version.1.3 Page 2 of 114 Report No.: STR230130002001E 7.6 20DB BANDWIDTH TEST .......................................................................................................................... 35 7.6.1 Applicable Standard .................................................................................................................................. 35 7.6.2 Conformance Limit ................................................................................................................................... 35 7.6.3 Measuring Instruments............................................................................................................................. 35 7.6.4 Test Setup .................................................................................................................................................. 35 7.6.5 Test Procedure ........................................................................................................................................... 35 7.6.6 Test Results ................................................................................................................................................ 35 7.7 PEAK OUTPUT POWER .............................................................................................................................. 36 7.7.1 Applicable Standard .................................................................................................................................. 36 7.7.2 Conformance Limit ................................................................................................................................... 36 7.7.3 Measuring Instruments............................................................................................................................. 36 7.7.4 Test Setup .................................................................................................................................................. 36 7.7.5 Test Procedure ........................................................................................................................................... 36 7.7.6 Test Results ................................................................................................................................................ 36 7.8 CONDUCTED BAND EDGE MEASUREMENT......................................................................................... 37 7.8.1 Applicable Standard .................................................................................................................................. 37 7.8.2 Conformance Limit ................................................................................................................................... 37 7.8.3 Measuring Instruments............................................................................................................................. 37 7.8.4 Test Setup .................................................................................................................................................. 37 7.8.5 Test Procedure ........................................................................................................................................... 37 7.8.6 Test Results ................................................................................................................................................ 37 7.9 SPURIOUS RF CONDUCTED EMISSION.................................................................................................. 38 7.9.1 Applicable Standard .................................................................................................................................. 38 7.9.2 Conformance Limit ................................................................................................................................... 38 7.9.3 Measuring Instruments............................................................................................................................. 38 7.9.4 Test Setup .................................................................................................................................................. 38 7.9.5 Test Procedure ........................................................................................................................................... 38 7.9.6 Test Results ................................................................................................................................................ 38 7.10 ANTENNA APPLICATION .......................................................................................................................... 39 7.10.1 Antenna Requirement ........................................................................................................................... 39 7.10.2 Result..................................................................................................................................................... 39 7.11 FREQUENCY HOPPING SYSTEM (FHSS) EQUIPMENT REQUIREMENTS ......................................... 40 8 TEST RESULTS ................................................................................................................................................... 41 8.1 LEFT .............................................................................................................................................................. 41 8.1.1 Dwell Time................................................................................................................................................. 41 8.1.2 Maximum Conducted Output Power........................................................................................................ 48 8.1.3 -20dB Bandwidth ...................................................................................................................................... 52 8.1.4 Carrier Frequencies Separation ............................................................................................................... 56 8.1.5 Number of Hopping Channel ................................................................................................................... 60 8.1.6 Band Edge ................................................................................................................................................. 61 8.1.7 Band Edge(Hopping) ................................................................................................................................ 66 8.1.8 Conducted RF Spurious Emission ........................................................................................................... 71 8.2 RIGHT: .......................................................................................................................................................... 78 8.2.1 Dwell Time................................................................................................................................................. 78 8.2.2 Maximum Conducted Output Power........................................................................................................ 85 8.2.3 -20dB Bandwidth ...................................................................................................................................... 89 8.2.4 Carrier Frequencies Separation ............................................................................................................... 93 8.2.5 Number of Hopping Channel ................................................................................................................... 97 8.2.6 Band Edge ................................................................................................................................................. 98 8.2.7 Band Edge(Hopping) .............................................................................................................................. 103 8.2.8 Conducted RF Spurious Emission ......................................................................................................... 108 END OF REPORT ..................................................................................................................................................... 114 Version.1.3 Page 3 of 114 Report No.: STR230130002001E 1 TEST RESULT CERTIFICATION Applicant's name .........................: DOKE COMMUNICATION (HK) LIMITED Address........................................: RM 1902 EASEY COMM BLDG 253-261 HENNESSY ROAD WANCHAI HK CHINA Manufacturer's Name ..................: Shenzhen DOKE Electronic Co.,Ltd Address........................................: 801, Building3, 7th Industrial Zone, Yulv Community, Yutang Road, Guangming District, Shenzhen, China Product description Product name ..............................: Wireless Earphone Model and/or type reference ......: AirBuds 10 Family Model ...............................: N/A Test Sample Number ...................: T230130001R002 Measurement Procedure Used: APPLICABLE STANDARDS STANDARD/ TEST PROCEDURE FCC 47 CFR Part 2, Subpart J FCC 47 CFR Part 15, Subpart C ANSI C63.10-2013 TEST RESULT Complied This device described above has been tested by Shenzhen NTEK Testing Technology Co., Ltd., and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of Shenzhen NTEK Testing Technology Co., Ltd., this document may be altered or revised by Shenzhen NTEK Testing Technology Co., Ltd., personnel only, and shall be noted in the revision of the document. The test results of this report relate only to the tested sample identified in this report. Date of Test : Feb 02, 2023 ~ Feb 28, 2023 Testing Engineer : (Mary Hu) Authorized Signatory : (Alex Li) Version.1.3 Page 4 of 114 Report No.: STR230130002001E 2 SUMMARY OF TEST RESULTS FCC Part15 (15.247), Subpart C Standard Section Test Item Verdict 15.207 Conducted Emission PASS 15.209 (a) 15.205 (a) Radiated Spurious Emission PASS 15.247(a)(1) Hopping Channel Separation PASS Remark 15.247(b)(1) Peak Output Power PASS 15.247(a)(iii) Number of Hopping Frequency PASS 15.247(a)(iii) Dwell Time PASS 15.247(a)(1) Bandwidth PASS 15.247 (d) Band Edge Emission PASS 15.247 (d) Spurious RF Conducted Emission PASS 15.203 Antenna Requirement PASS Remark: 1. "N/A" denotes test is not applicable in this Test Report. 2. All test items were verified and recorded according to the standards and without any deviation during the test. Version.1.3 Page 5 of 114 Report No.: STR230130002001E 3 FACILITIES AND ACCREDITATIONS 3.1 FACILITIES All measurement facilities used to collect the measurement data are located at 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street, Bao'an District, Shenzhen 518126 P.R. China. The sites are constructed in conformance with the requirements of ANSI C63.7, ANSI C63.10 and CISPR Publication 22. 3.2 LABORATORY ACCREDITATIONS AND LISTINGS Site Description CNAS-Lab. : The Certificate Registration Number is L5516. IC-Registration The Certificate Registration Number is 9270A. CAB identifier:CN0074 FCC- Accredited Test Firm Registration Number: 463705. Designation Number: CN1184 A2LA-Lab. The Certificate Registration Number is 4298.01 This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (refer to joint ISO-ILAC-IAF Communiqué dated 8 January 2009). Name of Firm : Shenzhen NTEK Testing Technology Co., Ltd. Site Location : 1/F, Building E, Fenda Science Park, Sanwei Community, Xixiang Street, Bao'an District, Shenzhen 518126 P.R. China. 3.3 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y±U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 Conducted Emission Test ±2.80dB 2 RF power, conducted ±0.16dB 3 Spurious emissions, conducted ±0.21dB 4 All emissions, radiated(30MHz~1GHz) ±2.64dB 5 All emissions, radiated(1GHz~6GHz) ±2.40dB 6 All emissions, radiated(6GHz) ±2.52dB 7 Temperature ±0.5°C 8 Humidity ±2% 9 All emissions, radiated(9KHz~30MHz) ±6dB Version.1.3 Page 6 of 114 Report No.: STR230130002001E 4 GENERAL DESCRIPTION OF EUT Equipment Trade Mark FCC ID Model No. Family Model Model Difference Operating Frequency Modulation Number of Channels Antenna Type Antenna Gain Adapter Battery Power supply HW Version SW Version Product Feature and Specification Wireless Earphone Blackview 2A7DX-AIRBUDS10 AirBuds 10 N/A N/A 2402MHz~2480MHz GFSK, /4-DQPSK 79 Channels Chip antenna 1.75 dBi N/A Earphone: DC 3.7V, 50mAh Charging case: DC 3.7V, 550mAh Earphone: DC 3.7V from Battery or DC 5V from Charging case Charging case: DC 3.7V from Battery or DC 5V from type-C port. V4 V7 Note 1: Based on the application, features, or specification exhibited in User's Manual, the EUT is considered as an ITE/Computing Device. More details of EUT technical specification, please refer to the User's Manual. Note 2: The engineering test program was provided and the EUT was programmed to be in continuously transmitting mode. Version.1.3 Page 7 of 114 Revision History Report No. STR230130002001E Version Rev.01 Report No.: STR230130002001E Description Initial issue of report Issued Date Feb 28, 2023 Version.1.3 Page 8 of 114 Report No.: STR230130002001E 5 DESCRIPTION OF TEST MODES To investigate the maximum EMI emission characteristics generates from EUT, the test system was pre-scanning tested base on the consideration of following EUT operation mode or test configuration mode which possible have effect on EMI emission level. Each of these EUT operation mode(s) or test configuration mode(s) mentioned above was evaluated respectively. The Transmitter was operated in the normal operating mode. The TX frequency was fixed which was for the purpose of the measurements. Test of channel included the lowest and middle and highest frequency to perform the test, then record on this report. Those data rates (1Mbps for GFSK modulation; 2Mbps for /4-DQPSK modulation) were used for all test. The EUT was pretested with 3 orientations placed on the table for the radiated emission measurement X, Y, and Z-plane. The X-plane results were found as the worst case and were shown in this report. Carrier Frequency and Channel list: Channel Frequency(MHz) 0 2402 1 2403 ... ... 39 2441 40 2442 ... ... 77 2479 78 2480 Note: fc=2402MHz+k×1MHz k=0 to 78 The following summary table is showing all test modes to demonstrate in compliance with the standard. For AC Conducted Emission Final Test Mode Description Mode 1 normal link mode Note: AC power line Conducted Emission was tested under maximum output power. For Radiated Test Cases Final Test Mode Description Mode 1 normal link mode Mode 2 CH00(2402MHz) Mode 3 CH39(2441MHz) Mode 4 CH78(2480MHz) Note: For radiated test cases, the worst mode data rate 2Mbps was reported only, because this data rate has the highest RF output power at preliminary tests, and no other significantly frequencies found in conducted spurious emission. For Conducted Test Cases Final Test Mode Description Mode 2 CH00(2402MHz) Mode 3 CH39(2441MHz) Mode 4 CH78(2480MHz) Mode 5 Hopping mode Note: The engineering test program was provided and the EUT was programmed to be in continuously transmitting mode. Version.1.3 Page 9 of 114 6 SETUP OF EQUIPMENT UNDER TEST 6.1 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM For Conducted Test Cases Report No.: STR230130002001E E-1.2 EUT E-1.1 EUT C-1 AC PLUG E-2 Adapter For Radiated Test Cases E-1.1 EUT Measurement C-2 Instrument EUT Note: 1. The temporary antenna connector is soldered on the PCB board in order to perform conducted tests and this temporary antenna connector is listed in the equipment list. 2. EUT built-in battery-powered, the battery is fully-charged. Version.1.3 Page 10 of 114 Report No.: STR230130002001E 6.2 SUPPORT EQUIPMENT The EUT has been tested as an independent unit together with other necessary accessories or support units. The following support units or accessories were used to form a representative test configuration during the tests. Item Equipment Model/Type No. Series No. Note E-1.1 Wireless Earphone AirBuds 7 N/A EUT E-1.2 Chaging case AirBuds 7 N/A EUT E-2 Adapter N/A N/A Peripherals Item Cable Type Shielded Type C-1 Type-C Cable NO C-2 RF Cable YES Ferrite Core NO NO Length 0.2m 0.1m Notes: (1) The support equipment was authorized by Declaration of Confirmation. (2) For detachable type I/O cable should be specified the length in cm inLengthcolumn. (3) "YES" is means "shielded" "with core"; "NO" is means "unshielded" "without core". Version.1.3 Page 11 of 114 Report No.: STR230130002001E 6.3 EQUIPMENTS LIST FOR ALL TEST ITEMS Radiation& Conducted Test equipment Kind of Equipment Manufacturer Type No. 1 Spectrum Analyzer 2 Spectrum Analyzer 3 Spectrum Analyzer 4 Test Receiver Aglient Agilent R&S R&S E4407B N9020A FSV40 ESPI7 Serial No. Last calibration Calibrated until Calibrati on period MY45108040 2022.04.01 2023.03.31 1 year MY49100060 2022.04.01 2023.03.31 1 year 101417 101318 2022.06.16 2023.06.15 1 year 2022.04.06 2023.04.05 1 year 5 Bilog Antenna TESEQ CBL6111D 31216 2022.03.30 2023.03.29 1 year 6 50 Coaxial Switch Anritsu MP59B 6200983705 2020.05.11 2023.05.10 3 year 7 Horn Antenna EM EM-AH-1018 0 2011071402 2022.03.31 2023.03.30 1 year 8 Broadband Horn Antenna SCHWARZBE CK BBHA 9170 803 2022.11.07 2023.11.06 1 year 9 Amplifier EMC EMC051835 SE 980246 2022.06.17 2023.06.16 1 year 10 Active Loop SCHWARZBE FMZB 1519 Antenna CK B 055 2022.11.04 2023.11.03 1 year 11 Power Meter DARE RPR3006W 15I00041SN O84 2022.06.16 2023.06.15 1 year 12 Test Cable (9KHz-30MHz) N/A R-01 N/A 2022.06.17 2025.06.16 3 year Test Cable 13 (30MHz-1GHz N/A R-02 N/A 2022.06.17 2025.06.16 3 year ) High Test 14 Cable(1G-40G N/A R-03 N/A 2022.06.17 2025.06.16 3 year Hz) 15 Filter TRILTHIC 2400MHz 29 2020.04.07 2023.04.06 3 year temporary 16 antenna connector NTS R001 N/A N/A N/A N/A (Note) Note: We will use the temporary antenna connector (soldered on the PCB board) When conducted test And this temporary antenna connector is listed within the instrument list Version.1.3 Page 12 of 114 Report No.: STR230130002001E AC Conduction Test equipment Item Kind of Equipment Manufacturer Type No. Serial No. Last calibration 1 Test Receiver R&S ESCI 101160 2022.04.06 2 LISN R&S ENV216 101313 2022.04.06 3 LISN SCHWARZBE CK NNLK 8129 8129245 2022.04.06 4 50 Coaxial Switch ANRITSU CORP MP59B 6200983704 2020.05.11 Test Cable 5 (9KHz-30MH N/A C01 N/A 2020.05.11 z) Test Cable 6 (9KHz-30MH N/A C02 N/A 2020.05.11 z) Test Cable 7 (9KHz-30MH N/A C03 N/A 2020.05.11 z) Calibrated until 2023.04.05 2023.04.05 2023.04.05 2023.05.10 2023.05.10 2023.05.10 2023.05.10 Calibration period 1 year 1 year 1 year 3 year 3 year 3 year 3 year Note: Each piece of equipment is scheduled for calibration once a year except the Aux Equipment & Test Cable which is scheduled for calibration every 2 or 3 years. Version.1.3 Page 13 of 114 Report No.: STR230130002001E 7 TEST REQUIREMENTS 7.1 CONDUCTED EMISSIONS TEST 7.1.1 Applicable Standard According to FCC Part 15.207(a) 7.1.2 Conformance Limit Frequency(MHz) Conducted Emission Limit Quasi-peak Average 0.15-0.5 66-56* 56-46* 0.5-5.0 56 46 5.0-30.0 60 50 Note: 1. *Decreases with the logarithm of the frequency 2. The lower limit shall apply at the transition frequencies 3. The limit decreases in line with the logarithm of the frequency in the range of 0.15 to 0.50MHz. 7.1.3 Test Configuration Reference Ground EMI Receiver EUT Auxiliary Reference Equipment Ground 80cm LISN 50 80cm LISN 7.1.4 Test Procedure According to the requirements in Section 13.1.4.1 of ANSI C63.10-2013 Conducted emissions the EUT measured in the frequency range between 0.15 MHz and 30 MHz using CISPR Quasi-Peak and average detector mode. 1. The EUT was placed 0.4 meter from the conducting wall of the shielding room. 2. The EUT was placed on a table which is 0.8m above ground plane. 3. Connect EUT to the power mains through a line impedance stabilization network (LISN). All other support equipments powered from additional LISN(s). The LISN provide 50 Ohm/ 50uH of coupling impedance for the measuring instrument. 4. Interconnecting cables that hang closer than 40 cm to the ground plane shall be folded back and forth in the center forming a bundle 30 to 40cm long. 5. I/O cables that are not connected to a peripheral shall be bundled in the center. The end of the cable may be terminated, if required, using the correct terminating impedance. The overall length shall not exceed 1 m. 6. LISN at least 80 cm from nearest part of EUT chassis. 7. The frequency range from 150KHz to 30MHz was searched. 8. Set the test-receiver system to Peak Detect Function and specified bandwidth(IF bandwidth=9KHz) with Maximum Hold Mode 9. For the actual test configuration, please refer to the related Item EUT Test Photos. 7.1.5 Test Results Pass Version.1.3 Page 14 of 114 Report No.: STR230130002001E 7.1.6 Test Results EUT Wireless Earphone Temperature22 Pressure 1010hPa Test Voltage DC 5V from Adapter AC 120V/60Hz Model Name AirBuds 10 Relative Humidity57% Phase : L Test Mode Mode 1 Frequency Reading Level Correct Factor Measure-ment (MHz) (dBV) (dB) (dBV) 0.4300 24.11 9.66 33.77 0.4300 11.66 9.66 21.32 0.8020 22.54 9.68 32.22 0.8020 7.06 9.68 16.74 1.4140 19.00 9.67 28.67 1.4140 5.30 9.67 14.97 2.3420 17.77 9.70 27.47 2.3420 3.93 9.70 13.63 3.2780 16.17 9.74 25.91 3.2780 2.24 9.74 11.98 4.0580 14.88 9.75 24.63 4.0580 1.88 9.75 11.63 Remark: 1. All readings are Quasi-Peak and Average values. 2. Factor = Insertion Loss + Cable Loss. Limits (dBV) 57.25 47.25 56.00 46.00 56.00 46.00 56.00 46.00 56.00 46.00 56.00 46.00 Margin (dB) -23.48 -25.93 -23.78 -29.26 -27.33 -31.03 -28.53 -32.37 -30.09 -34.02 -31.37 -34.37 Remark QP AVG QP AVG QP AVG QP AVG QP AVG QP AVG Version.1.3 Page 15 of 114 Report No.: STR230130002001E EUT Temperature Pressure Test Voltage Wireless Earphone 25 1010hPa DC 5V from Adapter AC 120V/60Hz Model Name AirBuds 10 Relative Humidity 62% Phase : N Test Mode Mode 1 Frequency Reading Level Correct Factor Measure-ment (MHz) (dBV) (dB) (dBV) 0.4260 24.99 9.67 34.66 0.4260 12.58 9.67 22.25 0.5580 25.38 9.67 35.05 0.5580 12.46 9.67 22.13 1.2300 20.55 9.67 30.22 1.2300 6.48 9.67 16.15 2.1060 18.01 9.67 27.68 2.1060 4.68 9.67 14.35 2.9780 16.82 9.69 26.51 2.9780 2.17 9.69 11.86 3.8620 15.50 9.72 25.22 3.8620 0.60 9.72 10.32 Remark: 1. All readings are Quasi-Peak and Average values. 2. Factor = Insertion Loss + Cable Loss. Limits (dBV) 57.33 47.33 56.00 46.00 56.00 46.00 56.00 46.00 56.00 46.00 56.00 46.00 Margin (dB) -22.67 -25.08 -20.95 -23.87 -25.78 -29.85 -28.32 -31.65 -29.49 -34.14 -30.78 -35.68 Remark QP AVG QP AVG QP AVG QP AVG QP AVG QP AVG Version.1.3 Page 16 of 114 Report No.: STR230130002001E 7.2 RADIATED SPURIOUS EMISSION 7.2.1 Applicable Standard According to FCC Part 15.247(d) and 15.209 and ANSI C63.10-2013 7.2.2 Conformance Limit According to FCC Part 15.247(d): radiated emissions which fall in the restricted bands, as defined in §15.205(a), must also comply with the radiated emission limits specified in §15.209(a) (see §15.205(c)). According to FCC Part15.205, Restricted bands MHz MHz MHz GHz 0.090-0.110 16.42-16.423 399.9-410 4.5-5.15 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 4.17725-4.17775 37.5-38.25 1435-1626.5 9.0-9.2 4.20725-4.20775 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 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 20dBc in any 100 kHz bandwidth outside the operating frequency band. In case the emission fall within the restricted band specified on 15.205(a), then the 15.209(a) limit in the table below has to be followed. Restricted Frequency(MHz) Field Strength (V/m) Field Strength (dBV/m) Measurement Distance 0.009~0.490 2400/F(KHz) 20 log (uV/m) 300 0.490~1.705 24000/F(KHz) 20 log (uV/m) 30 1.705~30.0 30 29.5 30 30-88 100 40 3 88-216 150 43.5 3 216-960 200 46 3 Above 960 500 54 3 Limits of Radiated Emission Measurement(Above 1000MHz) Frequency(MHz) Class B (dBuV/m) (at 3M) PEAK AVERAGE Above 1000 74 54 Remark :1. Emission level in dBuV/m=20 log (uV/m) 2. Measurement was performed at an antenna to the closed point of EUT distance of meters. 3. For Frequency 9kHz~30MHz: Distance extrapolation factor =40log(Specific distance/ test distance)(dB); Limit line=Specific limits(dBuV) + distance extrapolation factor. For Frequency above 30MHz: Distance extrapolation factor =20log(Specific distance/ test distance)(dB); Limit line=Specific limits(dBuV) + distance extrapolation factor. Version.1.3 Page 17 of 114 Report No.: STR230130002001E 7.2.3 Measuring Instruments The Measuring equipment is listed in the section 6.3 of this test report. 7.2.4 Test Configuration (a) For radiated emissions below 30MHz Turntable EUT Ground Plane 3m 0.8 m 1.0m (b) For radiated emissions from 30MHz to 1000MHz Test Receiver Coaxial Cable Turntable EUT Test Receiver Ground Plane 3m 0.8m (c) For radiated emissions above 1000MHz 1m to 4m Coaxial Cable 3m Turntable EUT 1.5m 1.5m Version.1.3 4m Amplifie r Test Receiver Page 18 of 114 Report No.: STR230130002001E 7.2.5 Test Procedure The test site semi-anechoic chamber has met the requirement of NSA tolerance 4 dB according to the standards: ANSI C63.10-2013. The test distance is 3m.The setup is according to the requirements in Section 13.1.4.1 of ANSI C63.10-2013 and CAN/CSA-CEI/IEC CISPR 22. This test is required for any spurious emission that falls in a Restricted Band, as defined in Section 15.205. It must be performed with the highest gain of each type of antenna proposed for use with the EUT. Use the following spectrum analyzer settings: Spectrum Parameter Setting Attenuation Auto Start Frequency 1000 MHz Stop Frequency 10th carrier harmonic RB / VB (emission in restricted band) 1 MHz / 1 MHz for Peak, 1 MHz / 1 MHz for Average Receiver Parameter Attenuation Start ~ Stop Frequency Start ~ Stop Frequency Start ~ Stop Frequency Setting Auto 9kHz~150kHz / RB 200Hz for QP 150kHz~30MHz / RB 9kHz for QP 30MHz~1000MHz / RB 120kHz for QP a. The measuring distance of at 3 m shall be used for measurements at frequency up to 1GHz. For frequencies above 1GHz, any suitable measuring distance may be used. b. The EUT was placed on the top of a rotating table 0.8 m for below 1GHz and 1.5m for above 1GHz the ground at a 3 meter. The table was rotated 360 degrees to determine the position of the highest radiation. c. The height of the equipment or of the substitution antenna shall be 0.8 m for below 1GHz and 1.5m for above 1GHz; the height of the test antenna shall vary between 1 m to 4 m. Both horizontal and vertical polarizations of the antenna are set to make the measurement. d. For the radiated emission test above 1GHz: Place the measurement antenna away from each area of the EUT determined to be a source of emissions at the specified measurement distance, while keeping the measurement antenna aimed at the source of emissions at each frequency of significant emissions, with polarization oriented for maximum response. The measurement antenna may have to be higher or lower than the EUT, depending on the radiation pattern of the emission and staying aimed at the emission source for receiving the maximum signal. The final measurement antenna elevation shall be that which maximizes the emissions. The measurement antenna elevation for maximum emissions shall be restricted to a range of heights of from 1 m to 4 m above the ground or reference ground plane. e. The initial step in collecting conducted emission data is a spectrum analyzer peak detector mode pre-scanning the measurement frequency range. Significant peaks are then marked and then Quasi Peak detector mode re-measured. f. If the Peak Mode measured value compliance with and lower than Quasi Peak Mode Limit, the EUT shall be deemed to meet QP Limits and then no additional QP Mode measurement performed. g. For the actual test configuration, please refer to the related Item EUT Test Photos. Note: Both horizontal and vertical antenna polarities were tested and performed pretest to three orthogonal axis. The worst case emissions were reported Version.1.3 Page 19 of 114 Report No.: STR230130002001E During the radiated emission test, the Spectrum Analyzer was set with the following configurations: Frequency Band (MHz) Function Resolution bandwidth Video Bandwidth 30 to 1000 QP 120 kHz 300 kHz Above 1000 Peak Average 1 MHz 1 MHz 1 MHz 1 MHz Note: for the frequency ranges below 30 MHz, a narrower RBW is used for these ranges but the measured value should add a RBW correction factor (RBWCF) where RBWCF [dB] =10*lg(100 [kHz]/narrower RBW [kHz]). , the narrower RBW is 1 kHz and RBWCF is 20 dB for the frequency 9 kHz to 150 kHz, and the narrower RBW is 10 kHz and RBWCF is 10 dB for the frequency 150 kHz to 30 MHz. 7.2.6 Test Results Spurious Emission below 30MHz (9KHz to 30MHz) EUT: Wireless Earphone Model No.: Temperature: 20 Relative Humidity: Test Mode: Mode2/Mode3/Mode4 Test By: AirBuds 10 48% Mary Hu Freq. Ant.Pol. Emission Level(dBuV/m) Limit 3m(dBuV/m) Over(dB) (MHz) H/V PK AV PK AV PK AV -- -- -- -- -- -- -- -- Note: the amplitude of spurious emission that is attenuated by more than 20dB below the permissible limit has no need to be reported. Version.1.3 Page 20 of 114 Report No.: STR230130002001E Spurious Emission below 1GHz (30MHz to 1GHz) All the modulation modes have been tested, and the worst result was report as below: EUT Temperature Pressure Test Voltage Wireless Earphone 25 1010hPa DC 3.7V Model Name Relative Humidity Test Mode AirBuds 10 55% Mode 2-(RIGHT) Polar (H/V) Frequency (MHz) Meter Reading (dBuV) Factor (dB) Emission Level (dBuV/m) Limits (dBuV/m) V 30.7454 5.17 25.87 31.04 40.00 V 49.0144 11.29 15.27 26.56 40.00 V 117.7724 8.17 18.47 26.64 43.50 V 609.9215 7.13 26.63 33.76 46.00 V 776.8777 7.88 28.99 36.87 46.00 V 932.2712 7.73 30.76 38.49 46.00 Remark: Emission Level= Meter Reading+ Factor, Margin= Emission Level - Limit Margin (dB) -8.96 -13.44 -16.86 -12.24 -9.13 -7.51 Remark QP QP QP QP QP QP Version.1.3 Page 21 of 114 Report No.: STR230130002001E Polar (H/V) Frequency (MHz) Meter Reading (dBuV) Factor (dB) Emission Level (dBuV/m) Limits (dBuV/m) H 30.8535 7.59 25.87 33.46 40.00 H 33.7986 8.42 23.69 32.11 40.00 H 219.0752 12.40 17.18 29.58 46.00 H 601.4265 6.88 26.16 33.04 46.00 H 711.6734 7.46 28.04 35.50 46.00 H 890.7278 7.50 30.38 37.88 46.00 Remark: Emission Level= Meter Reading+ Factor, Margin= Emission Level - Limit Margin (dB) -6.54 -7.89 -16.42 -12.96 -10.50 -8.12 Remark QP QP QP QP QP QP Version.1.3 Page 22 of 114 Report No.: STR230130002001E EUT Temperature Pressure Test Voltage Wireless Earphone 25 1010hPa DC 3.7V Model Name Relative Humidity Test Mode AirBuds 10 55% Mode 2-(RIGHT) Polar (H/V) Frequency (MHz) Meter Reading (dBuV) Factor (dB) Emission Level (dBuV/m) Limits (dBuV/m) V 30.5304 5.65 25.87 31.52 40.00 V 449.5557 6.84 24.09 30.93 46.00 V 549.0193 5.98 25.66 31.64 46.00 V 654.2318 7.33 27.13 34.46 46.00 V 752.7432 7.66 28.73 36.39 46.00 V 872.1832 7.05 30.35 37.40 46.00 Remark: Emission Level= Meter Reading+ Factor, Margin= Emission Level - Limit Margin (dB) -8.48 -15.07 -14.36 -11.54 -9.61 -8.60 Remark QP QP QP QP QP QP Version.1.3 Page 23 of 114 Report No.: STR230130002001E Polar (H/V) Frequency (MHz) Meter Reading (dBuV) Factor (dB) Emission Level (dBuV/m) Limits (dBuV/m) H 30.5306 5.56 25.87 31.43 40.00 H 32.7486 6.61 24.53 31.14 40.00 H 390.7226 6.36 22.77 29.13 46.00 H 699.3046 6.98 27.84 34.82 46.00 H 766.0570 7.32 28.95 36.27 46.00 H 948.7610 7.30 30.87 38.17 46.00 Remark: Emission Level= Meter Reading+ Factor, Margin= Emission Level - Limit Margin (dB) -8.57 -8.86 -16.87 -11.18 -9.73 -7.83 Remark QP QP QP QP QP QP Version.1.3 Page 24 of 114 Report No.: STR230130002001E Spurious Emission Above 1GHz (1GHz to 25GHz) EUT: Wireless Earphone Model No.: AirBuds 10 Temperature: 20 Relative Humidity: 48% Test Mode: Mode2/Mode3/Mode4-LEFT Test By: Mary Hu All the modulation modes have been tested, and the worst result was report as below: Frequency (MHz) Read Level (dBV) 4804.90 4804.90 7206.67 7206.67 4804.08 4804.08 7206.33 7206.33 66.44 43.48 61.22 43.07 64.52 40.38 63.84 41.58 4882.40 4882.40 7323.81 7323.81 4882.86 4882.86 7324.41 7324.41 66.75 43.46 63.57 43.07 64.45 40.20 63.15 41.05 4959.31 4959.31 7439.25 7439.25 4960.58 4960.58 7440.92 7440.92 65.42 43.74 64.05 42.27 60.81 43.26 60.58 41.49 Cable Antenna Preamp Emission loss Factor Factor Level Limits Margin (dB) dB/m (dB) (dBV/m) (dBV/m) (dB) Low Channel (2402 MHz)( /4-DQPSK)--Above 1G 5.21 35.59 44.30 62.94 74.00 -11.06 5.21 35.59 44.30 39.98 54.00 -14.02 6.48 36.27 44.60 59.37 74.00 -14.63 6.48 36.27 44.60 41.22 54.00 -12.78 5.21 35.55 44.30 60.98 74.00 -13.02 5.21 35.55 44.30 36.84 54.00 -17.16 6.48 36.27 44.52 62.07 74.00 -11.93 6.48 36.27 44.52 39.81 54.00 -14.19 Mid Channel (2441 MHz)( /4-DQPSK)--Above 1G 5.21 35.66 44.20 63.42 74.00 -10.58 5.21 35.66 44.20 40.13 54.00 -13.87 7.10 36.50 44.43 62.74 74.00 -11.26 7.10 36.50 44.43 42.24 54.00 -11.76 5.21 35.66 44.20 61.12 74.00 -12.88 5.21 35.66 44.20 36.87 54.00 -17.13 7.10 36.50 44.43 62.32 74.00 -11.68 7.10 36.50 44.43 40.22 54.00 -13.78 High Channel (2480 MHz)( /4-DQPSK)-- Above 1G 5.21 35.52 44.21 61.94 74.00 -12.06 5.21 35.52 44.21 40.26 54.00 -13.74 7.10 36.53 44.60 63.08 74.00 -10.92 7.10 36.53 44.60 41.30 54.00 -12.70 5.21 35.52 44.21 57.33 74.00 -16.67 5.21 35.52 44.21 39.78 54.00 -14.22 7.10 36.53 44.60 59.61 74.00 -14.39 7.10 36.53 44.60 40.52 54.00 -13.48 Remark Comment Pk Vertical AV Vertical Pk Vertical AV Vertical Pk Horizontal AV Horizontal Pk Horizontal AV Horizontal Pk Vertical AV Vertical Pk Vertical AV Vertical Pk Horizontal AV Horizontal Pk Horizontal AV Horizontal Pk Vertical AV Vertical Pk Vertical AV Vertical Pk Horizontal AV Horizontal Pk Horizontal AV Horizontal Note: (1) Emission Level= Antenna Factor + Cable Loss + Read Level - Preamp Factor (2)All other emissions more than 20dB below the limit. Version.1.3 Page 25 of 114 Report No.: STR230130002001E EUT: Wireless Earphone Model No.: AirBuds 10 Temperature: 20 Relative Humidity: 48% Test Mode: Mode2/Mode3/Mode4-RIGHT Test By: Mary Hu All the modulation modes have been tested, and the worst result was report as below: Frequency (MHz) Read Level (dBV) 4804.38 4804.38 7206.13 7206.13 4804.11 4804.11 7206.39 7206.39 66.12 43.37 62.33 42.33 60.62 43.09 62.69 42.04 4882.05 4882.05 7323.28 7323.28 4882.69 4882.69 7324.10 7324.10 65.44 43.33 60.72 43.34 63.05 43.96 62.84 42.92 4960.09 4960.09 7439.60 7439.60 4960.66 4960.66 7440.27 7440.27 65.42 43.04 61.33 42.82 60.50 40.73 61.72 40.44 Cable Antenna Preamp Emission loss Factor Factor Level Limits Margin (dB) dB/m (dB) (dBV/m) (dBV/m) (dB) Low Channel (2402 MHz)( /4-DQPSK)--Above 1G 5.21 35.59 44.30 62.62 74.00 -11.38 5.21 35.59 44.30 39.87 54.00 -14.13 6.48 36.27 44.60 60.48 74.00 -13.52 6.48 36.27 44.60 40.48 54.00 -13.52 5.21 35.55 44.30 57.08 74.00 -16.92 5.21 35.55 44.30 39.55 54.00 -14.45 6.48 36.27 44.52 60.92 74.00 -13.08 6.48 36.27 44.52 40.27 54.00 -13.73 Mid Channel (2441 MHz)( /4-DQPSK)--Above 1G 5.21 35.66 44.20 62.11 74.00 -11.89 5.21 35.66 44.20 40.00 54.00 -14.00 7.10 36.50 44.43 59.89 74.00 -14.11 7.10 36.50 44.43 42.51 54.00 -11.49 5.21 35.66 44.20 59.72 74.00 -14.28 5.21 35.66 44.20 40.63 54.00 -13.37 7.10 36.50 44.43 62.01 74.00 -11.99 7.10 36.50 44.43 42.09 54.00 -11.91 High Channel (2480 MHz)( /4-DQPSK)-- Above 1G 5.21 35.52 44.21 61.94 74.00 -12.06 5.21 35.52 44.21 39.56 54.00 -14.44 7.10 36.53 44.60 60.36 74.00 -13.64 7.10 36.53 44.60 41.85 54.00 -12.15 5.21 35.52 44.21 57.02 74.00 -16.98 5.21 35.52 44.21 37.25 54.00 -16.75 7.10 36.53 44.60 60.75 74.00 -13.25 7.10 36.53 44.60 39.47 54.00 -14.53 Remark Comment Pk Vertical AV Vertical Pk Vertical AV Vertical Pk Horizontal AV Horizontal Pk Horizontal AV Horizontal Pk Vertical AV Vertical Pk Vertical AV Vertical Pk Horizontal AV Horizontal Pk Horizontal AV Horizontal Pk Vertical AV Vertical Pk Vertical AV Vertical Pk Horizontal AV Horizontal Pk Horizontal AV Horizontal Note: (1) Emission Level= Antenna Factor + Cable Loss + Read Level - Preamp Factor (2)All other emissions more than 20dB below the limit. Version.1.3 Page 26 of 114 Report No.: STR230130002001E Spurious Emission in Restricted Band 2310-2390MHz and 2483.5-2500MHz EUT: Wireless Earphone Model No.: AirBuds 10 Temperature: 20 Relative Humidity: 48% Test Mode: Mode2/ Mode4-LEFT Test By: Mary Hu All the modulation modes have been tested, and the worst result was report as below: Frequency Meter Reading Cable Antenna Preamp Emission Loss Factor Factor Level Limits Margin Detector (MHz) (dBV) (dB) dB/m (dB) (dBV/m) (dBV/m) (dB) Type 2Mbps(/4-DQPSK)-Non-hopping 2310.00 54.96 2.97 27.80 43.80 41.93 74 -32.07 Pk 2310.00 41.49 2.97 27.80 43.80 28.46 54 -25.54 AV 2310.00 53.44 2.97 27.80 43.80 40.41 74 -33.59 Pk 2310.00 40.24 2.97 27.80 43.80 27.21 54 -26.79 AV 2390.00 52.44 3.14 27.21 43.80 38.99 74 -35.01 Pk 2390.00 44.14 3.14 27.21 43.80 30.69 54 -23.31 AV 2390.00 53.29 3.14 27.21 43.80 39.84 74 -34.16 Pk 2390.00 41.09 3.14 27.21 43.80 27.64 54 -26.36 AV 2483.50 52.68 3.58 27.70 44.00 39.96 74 -34.04 Pk 2483.50 40.98 3.58 27.70 44.00 28.26 54 -25.74 AV 2483.50 54.48 3.58 27.70 44.00 41.76 74 -32.24 Pk 2483.50 43.31 3.58 27.70 44.00 30.59 54 -23.41 AV 2Mbps(/4-DQPSK)-hopping 2310.00 51.86 2.97 27.80 43.80 38.83 74.00 -35.17 Pk 2310.00 41.79 2.97 27.80 43.80 28.76 54.00 -25.24 AV 2310.00 52.72 2.97 27.80 43.80 39.69 74.00 -34.31 Pk 2310.00 45.82 2.97 27.80 43.80 32.79 54.00 -21.21 AV 2390.00 52.01 3.14 27.21 43.80 38.56 74.00 -35.44 Pk 2390.00 43.90 3.14 27.21 43.80 30.45 54.00 -23.55 AV 2390.00 52.58 3.14 27.21 43.80 39.13 74.00 -34.87 Pk 2390.00 41.52 3.14 27.21 43.80 28.07 54.00 -25.93 AV 2483.50 52.80 3.58 27.70 44.00 40.08 74.00 -33.92 Pk 2483.50 44.51 3.58 27.70 44.00 31.79 54.00 -22.21 AV 2483.50 54.84 3.58 27.70 44.00 42.12 74.00 -31.88 Pk 2483.50 40.91 3.58 27.70 44.00 28.19 54.00 -25.81 AV Comment Horizontal Horizontal Vertical Vertical Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal Note: (1) All other emissions more than 20dB below the limit. Version.1.3 Page 27 of 114 Report No.: STR230130002001E EUT: Wireless Earphone Model No.: AirBuds 10 Temperature: 20 Relative Humidity: 48% Test Mode: Mode2/ Mode4-RIGHT Test By: Mary Hu All the modulation modes have been tested, and the worst result was report as below: Frequency (MHz) Meter Reading (dBV) 2310.00 2310.00 2310.00 2310.00 2390.00 2390.00 2390.00 2390.00 2483.50 2483.50 2483.50 2483.50 56.02 42.61 53.60 44.35 53.22 40.71 52.43 44.53 51.13 43.09 51.75 42.48 2310.00 2310.00 2310.00 2310.00 2390.00 2390.00 2390.00 2390.00 2483.50 2483.50 2483.50 2483.50 55.57 40.48 51.73 44.94 54.90 42.97 54.34 40.44 50.03 42.13 54.27 42.24 Cable Loss (dB) 2.97 2.97 2.97 2.97 3.14 3.14 3.14 3.14 3.58 3.58 3.58 3.58 2.97 2.97 2.97 2.97 3.14 3.14 3.14 3.14 3.58 3.58 3.58 3.58 Antenna Preamp Emission Factor Factor Level Limits dB/m (dB) (dBV/m) (dBV/m) 2Mbps(/4-DQPSK)-Non-hopping 27.80 43.80 42.99 74 27.80 43.80 29.58 54 27.80 43.80 40.57 74 27.80 43.80 31.32 54 27.21 43.80 39.77 74 27.21 43.80 27.26 54 27.21 43.80 38.98 74 27.21 43.80 31.08 54 27.70 44.00 38.41 74 27.70 44.00 30.37 54 27.70 44.00 39.03 74 27.70 44.00 29.76 54 2Mbps(/4-DQPSK)-hopping 27.80 43.80 42.54 74.00 27.80 43.80 27.45 54.00 27.80 43.80 38.70 74.00 27.80 43.80 31.91 54.00 27.21 43.80 41.45 74.00 27.21 43.80 29.52 54.00 27.21 43.80 40.89 74.00 27.21 43.80 26.99 54.00 27.70 44.00 37.31 74.00 27.70 44.00 29.41 54.00 27.70 44.00 41.55 74.00 27.70 44.00 29.52 54.00 Margin (dB) -31.01 -24.42 -33.43 -22.68 -34.23 -26.74 -35.02 -22.92 -35.59 -23.63 -34.97 -24.24 -31.46 -26.55 -35.30 -22.09 -32.55 -24.48 -33.11 -27.01 -36.69 -24.59 -32.45 -24.48 Detector Type Comment Pk Horizontal AV Horizontal Pk Vertical AV Vertical Pk Vertical AV Vertical Pk Horizontal AV Horizontal Pk Vertical AV Vertical Pk Horizontal AV Horizontal Pk Vertical AV Vertical Pk Horizontal AV Horizontal Pk Vertical AV Vertical Pk Horizontal AV Horizontal Pk Vertical AV Vertical Pk Horizontal AV Horizontal Note: (1) All other emissions more than 20dB below the limit. Version.1.3 Page 28 of 114 Report No.: STR230130002001E Spurious Emission in Restricted Band 3260MHz-18000MHz EUT: Wireless Earphone Model No.: AirBuds 10 Temperature: 20 Relative Humidity: 48% Test Mode: Mode2/ Mode4-LEFT Test By: Mary Hu All the modulation modes have been tested, and the worst result was report as below: Frequency Reading Level Cable Loss Antenna Factor Preamp Factor Emission Level Limits Margin Detector (MHz) (dBV) (dB) dB/m (dB) (dBV/m) (dBV/m) (dB) Type 3260 60.91 4.04 29.57 44.70 49.82 74 -24.18 Pk 3260 47.33 4.04 29.57 44.70 36.24 54 -17.76 AV 3260 54.09 4.04 29.57 44.70 43.00 74 -31.00 Pk 3260 46.47 4.04 29.57 44.70 35.38 54 -18.62 AV 3332 60.22 4.26 29.87 44.40 49.95 74 -24.05 Pk 3332 46.46 4.26 29.87 44.40 36.19 54 -17.81 AV 3332 63.86 4.26 29.87 44.40 53.59 74 -20.41 Pk 3332 43.09 4.26 29.87 44.40 32.82 54 -21.18 AV 17797 49.42 10.99 43.95 43.50 60.86 74 -13.14 Pk 17797 37.57 10.99 43.95 43.50 49.01 54 -4.99 AV 17788 55.88 11.81 43.69 44.60 66.78 74 -7.22 Pk 17788 36.50 11.81 43.69 44.60 47.40 54 -6.60 AV Comment Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal Note: (1) All other emissions more than 20dB below the limit. Version.1.3 Page 29 of 114 Report No.: STR230130002001E EUT: Wireless Earphone Model No.: AirBuds 10 Temperature: 20 Relative Humidity: 48% Test Mode: Mode2/ Mode4-RIGHT Test By: Mary Hu All the modulation modes have been tested, and the worst result was report as below: Frequency Reading Level Cable Loss Antenna Factor Preamp Factor Emission Level Limits Margin Detector (MHz) (dBV) (dB) dB/m (dB) (dBV/m) (dBV/m) (dB) Type 3260 58.30 4.04 29.57 44.70 47.21 74 -26.79 Pk 3260 49.88 4.04 29.57 44.70 38.79 54 -15.21 AV 3260 55.16 4.04 29.57 44.70 44.07 74 -29.93 Pk 3260 43.64 4.04 29.57 44.70 32.55 54 -21.45 AV 3332 63.27 4.26 29.87 44.40 53.00 74 -21.00 Pk 3332 47.38 4.26 29.87 44.40 37.11 54 -16.89 AV 3332 64.50 4.26 29.87 44.40 54.23 74 -19.77 Pk 3332 43.68 4.26 29.87 44.40 33.41 54 -20.59 AV 17797 50.19 10.99 43.95 43.50 61.63 74 -12.37 Pk 17797 34.37 10.99 43.95 43.50 45.81 54 -8.19 AV 17788 56.89 11.81 43.69 44.60 67.79 74 -6.21 Pk 17788 38.23 11.81 43.69 44.60 49.13 54 -4.87 AV Comment Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal Vertical Vertical Horizontal Horizontal Note: (1) All other emissions more than 20dB below the limit. Version.1.3 Page 30 of 114 Report No.: STR230130002001E 7.3 NUMBER OF HOPPING CHANNEL 7.3.1 Applicable Standard According to FCC Part 15.247(a)(1) (iii)and ANSI C63.10-2013 7.3.2 Conformance Limit Frequency hopping systems in the 2400-2483.5MHz band shall use at least 15 channels. 7.3.3 Measuring Instruments The Measuring equipment is listed in the section 6.3 of this test report. 7.3.4 Test Setup Please refer to Section 6.1 of this test report. 7.3.5 Test Procedure The testing follows ANSI C63.10-2013 clause 7.8.3 The RF output of EUT was connected to the spectrum analyzer by RF cable and attenuator. The path loss was compensated to the results for each measurement. Set to the maximum power setting and enable the EUT transmit continuously. The EUT must have its hopping function enabled. Use the following spectrum analyzer settings: Span = the frequency band of operation RBW : To identify clearly the individual channels, set the RBW to less than 30% of the channel spacing or the 20 dB bandwidth, whichever is smaller. VBW RBW Sweep = auto Detector function = peak Trace = max hold 7.3.6 Test Results EUT: Temperature: Test Mode: Wireless Earphone 20 Mode 5(1Mbps) Test data reference attachment. Model No.: Relative Humidity: Test By: AirBuds 10 48% Mary Hu Version.1.3 Page 31 of 114 Report No.: STR230130002001E 7.4 HOPPING CHANNEL SEPARATION MEASUREMENT 7.4.1 Applicable Standard According to FCC Part 15.247(a)(1) and ANSI C63.10-2013 7.4.2 Conformance Limit Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hopping channel, whichever is greater. Alternatively, frequency hopping systems operating in the 2400-2483.5MHz band shall have hopping channel carrier frequencies that are separated by 25kHz or two-thirds of the 20dB bandwidth of the hopping channel, whichever is greater. 7.4.3 Measuring Instruments The Measuring equipment is listed in the section 6.3 of this test report. 7.4.4 Test Setup Please refer to Section 6.1 of this test report. 7.4.5 Test Procedure The testing follows ANSI C63.10-2013 clause 7.8.2 The RF output of EUT was connected to the spectrum analyzer by RF cable and attenuator. The path loss was compensated to the results for each measurement. Set to the maximum power setting and enable the EUT transmit continuously. The EUT was operating in controlled its channel. Use the following spectrum analyzer settings: Span = Measurement Bandwidth or Channel Separation RBW: Start with the RBW set to approximately 30% of the channel spacing; adjust as necessary to best identify the center of each individual channel. VBW RBW Sweep = auto Detector function = peak Trace = max hold 7.4.6 Test Results EUT: Temperature: Test Mode: Wireless Earphone 20 Mode2/Mode3/Mode4 Test data reference attachment. Model No.: Relative Humidity: Test By: AirBuds 10 48% Mary Hu Version.1.3 Page 32 of 114 Report No.: STR230130002001E 7.5 AVERAGE TIME OF OCCUPANCY (DWELL TIME) 7.5.1 Applicable Standard According to FCC Part 15.247(a)(1)(iii) and ANSI C63.10-2013 7.5.2 Conformance Limit The average time of occupancy on any channel shall not be greater than 0.4s within a period of 0.4s multiplied by the number of hopping channels employed. 7.5.3 Measuring Instruments The Measuring equipment is listed in the section 6.3 of this test report. 7.5.4 Test Setup Please refer to Section 6.1 of this test report. 7.5.5 Test Procedure The testing follows ANSI C63.10-2013 clause 7.8.4 The RF output of EUT was connected to the spectrum analyzer by RF cable and attenuator. The path loss was compensated to the results for each measurement. Set to the maximum power setting and enable the EUT transmit continuously. The EUT must have its hopping function enabled. Use the following spectrum analyzer settings: Span = zero span, centered on a hopping channel RBW 1MHz VBW RBW Sweep = as necessary to capture the entire dwell time per hopping channel Detector function = peak Trace = max hold Measure the maximum time duration of one single pulse. Set the EUT for DH5, DH3 and DH1 packet transmitting. Measure the maximum time duration of one single pulse. Version.1.3 Page 33 of 114 Report No.: STR230130002001E 7.5.6 Test Results EUT: Temperature: Test Mode: Wireless Earphone 20 Mode2/Mode3/Mode4 Model No.: Relative Humidity: Test By: AirBuds 10 48% Mary Hu Test data reference attachment. Note: A Period Time = (channel number)*0.4 DH1 Dwell time: Reading * (1600/2)*31.6/(channel number) DH3 Dwell time: Reading * (1600/4)*31.6/(channel number) DH5 Dwell time: Reading * (1600/6)*31.6/(channel number) For Example: 1. In normal mode, hopping rate is 1600 hops/s with 6 slots in 79 hopping channels. With channel hopping rate (1600 / 6 / 79) in Occupancy Time Limit (0.4 x 79) (s), Hops Over Occupancy Time comes to (1600 / 6 / 79) x (0.4 x 79) = 106.67 hops. 2. In AFH mode, hopping rate is 800 hops/s with 6 slots in 20 hopping channels. With channel hopping rate (800 / 6 / 20) in Occupancy Time Limit (0.4 x 20) (s), Hops Over Occupancy Time comes to (800 / 6 / 20) x (0.4 x 20) = 53.33 hops. 3. Dwell Time(s) = Hops Over Occupancy Time (hops) x Package Transfer Time Version.1.3 Page 34 of 114 Report No.: STR230130002001E 7.6 20DB BANDWIDTH TEST 7.6.1 Applicable Standard According to FCC Part 15.247(a)(1) and ANSI C63.10-2013 7.6.2 Conformance Limit No limit requirement. 7.6.3 Measuring Instruments The Measuring equipment is listed in the section 6.3 of this test report. 7.6.4 Test Setup Please refer to Section 6.1 of this test report. 7.6.5 Test Procedure The testing follows ANSI C63.10-2013 clause 6.9.2 The RF output of EUT was connected to the spectrum analyzer by RF cable and attenuator. The path loss was compensated to the results for each measurement. Set to the maximum power setting and enable the EUT transmit continuously. The EUT was operating in controlled its channel. Use the following spectrum analyzer settings: Span = approximately 2 to 3 times the 20 dB bandwidth, centered on a hopping channel RBW 1% of the 20 dB bandwidth VBW RBW Sweep = auto Detector function = peak Trace = max hold 7.6.6 Test Results EUT: Temperature: Test Mode: Wireless Earphone 20 Mode2/Mode3/Mode4 Test data reference attachment. Model No.: Relative Humidity: Test By: AirBuds 10 48% Mary Hu Version.1.3 Page 35 of 114 Report No.: STR230130002001E 7.7 PEAK OUTPUT POWER 7.7.1 Applicable Standard According to FCC Part 15.247(b)(1) and ANSI C63.10-2013 7.7.2 Conformance Limit The maximum peak conducted output power of the intentional radiator shall not exceed the following: (1) For frequency hopping systems operating in the 2400-2483.5 MHz band employing at least 75 non-overlapping hopping channels, and all frequency hopping systems in the 5725-5850 MHz band: 1 watt. For all other frequency hopping systems in the 2400-2483.5 MHz band 0.125 watts. 7.7.3 Measuring Instruments The Measuring equipment is listed in the section 6.3 of this test report. 7.7.4 Test Setup Please refer to Section 6.1 of this test report. 7.7.5 Test Procedure The testing follows ANSI C63.10-2013 clause 7.8.5. The RF output of EUT was connected to the spectrum analyzer by RF cable and attenuator. The path loss was compensated to the results for each measurement. Set to the maximum power setting and enable the EUT transmit continuously. The EUT was operating in controlled its channel. Use the following spectrum analyzer settings: Span = approximately 5 times the 20 dB bandwidth, centered on a hopping channel RBW the 20 dB bandwidth of the emission being measured VBW RBW Sweep = auto Detector function = peak Trace = max hold 7.7.6 Test Results EUT: Temperature: Test Mode: Wireless Earphone 20 Mode2/Mode3/Mode4 Test data reference attachment. Model No.: Relative Humidity: Test By: AirBuds 10 48% Mary Hu Version.1.3 Page 36 of 114 Report No.: STR230130002001E 7.8 CONDUCTED BAND EDGE MEASUREMENT 7.8.1 Applicable Standard According to FCC Part 15.247(d) and ANSI C63.10-2013 7.8.2 Conformance Limit In any 100 kHz bandwidth outside the frequency band in which the spread spectrum or digitally modulated intentional radiator is operating, the radio frequency power that is produced by the intentional radiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF conducted or a radiated measurement, provided the transmitter demonstrates compliance with the peak conducted power limits. If the transmitter complies with the conducted power limits based on the use of RMS averaging over a time interval, as permitted under paragraph (b)(3) of this section, the attenuation required under this paragraph shall be 30 dB instead of 20 dB. Attenuation below the general limits specified in §15.209(a) is not required. In addition, radiated emissions which fall in the restricted bands, as defined in §15.205(a), must also comply with the radiated emission limits specified in §15.209(a) (see §15.205(c)). 7.8.3 Measuring Instruments The Measuring equipment is listed in the section 6.3 of this test report. 7.8.4 Test Setup Please refer to Section 6.1 of this test report. 7.8.5 Test Procedure The testing follows ANSI C63.10-2013 clause 7.8.6. The RF output of EUT was connected to the spectrum analyzer by RF cable and attenuator. The path loss was compensated to the results for each measurement. Set to the maximum power setting and enable the EUT transmit continuously. The EUT must have its hopping function enabled. Use the following spectrum analyzer settings: Span = approximately 5 times the 20 dB bandwidth, centered on a hopping channel RBW = 100KHz VBW = 300KHz Band edge emissions must be at least 20 dB down from the highest emission level within the authorized band as measured with a 100kHz RBW. The attenuation shall be 30 dB instead of 20 dB when RMS conducted output power procedure is used. Measure the highest amplitude appearing on spectral display and set it as a reference level. Plot the graph with marking the highest point and edge frequency. Repeat above procedures until all measured frequencies were complete. 7.8.6 Test Results EUT: Temperature: Test Mode: Wireless Earphone 20 Mode2 /Mode4/ Mode 5 Test data reference attachment. Model No.: AirBuds 10 Relative Humidity: 48% Test By: Mary Hu Version.1.3 Page 37 of 114 Report No.: STR230130002001E 7.9 SPURIOUS RF CONDUCTED EMISSION 7.9.1 Applicable Standard According to FCC Part 15.247(d) and ANSI C63.10-2013. 7.9.2 Conformance Limit In any 100 kHz bandwidth outside the frequency band in which the spread spectrum or digitally modulated intentional radiator is operating, the radio frequency power that is produced by the intentional radiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF conducted or a radiated measurement, provided the transmitter demonstrates compliance with the peak conducted power limits. If the transmitter complies with the conducted power limits based on the use of RMS averaging over a time interval, as permitted under paragraph (b)(3) of this section, the attenuation required under this paragraph shall be 30 dB instead of 20 dB. Attenuation below the general limits specified in §15.209(a) is not required. In addition, radiated emissions which fall in the restricted bands, as defined in §15.205(a), must also comply with the radiated emission limits specified in §15.209(a) (see §15.205(c)). 7.9.3 Measuring Instruments The Measuring equipment is listed in the section 6.3 of this test report. 7.9.4 Test Setup Please refer to Section 6.1 of this test report. 7.9.5 Test Procedure Establish an emission level by using the following procedure: a) Set the center frequency and span to encompass frequency range to be measured. b) Set the RBW = 100 kHz. c) Set the VBW [3 × RBW]. d) Detector = peak. e) Sweep time = auto couple. f) Trace mode = max hold. g) Allow trace to fully stabilize. h) Use the peak marker function to determine the maximum amplitude level. Then the limit shall be attenuated by at least 20 dB relative to the maximum amplitude level in 100 kHz. 7.9.6 Test Results Remark: The measurement frequency range is from 30MHzHz to the 10th harmonic of the fundamental frequency. The lowest, middle and highest channels are tested to verify the spurious emissions and bandege measurement data. Test data reference attachment. Version.1.3 Page 38 of 114 Report No.: STR230130002001E 7.10 ANTENNA APPLICATION 7.10.1 Antenna Requirement 15.203 requirement: For intentional device, according to 15.203: an intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. 7.10.2 Result The EUT antenna is permanent attached Chip antenna (Gain: 1.75 dBi). It comply with the standard requirement. Version.1.3 Page 39 of 114 Report No.: STR230130002001E 7.11 FREQUENCY HOPPING SYSTEM (FHSS) EQUIPMENT REQUIREMENTS 7.11.1 Standard Applicable According to FCC Part 15.247(a)(1), The system shall hop to channel frequencies that are selected at the system hopping rate from a pseudo randomly ordered list of hopping frequencies. Each frequency must be used equally on the average by each transmitter. The system receivers shall have input bandwidths that match the hopping channel bandwidths of their corresponding transmitters and shall shift frequencies in synchronization with the transmitted signals. (g) Frequency hopping spread spectrum systems are not required to employ all available hopping channels during each transmission. However, the system, consisting of both the transmitter and the receiver, must be designed to comply with all of the regulations in this section should the transmitter be presented with a continuous data (or information) stream. In addition, a system employing short transmission bursts must comply with the definition of a frequency hopping system and must distribute its transmissions over the minimum number of hopping channels specified in this section. (h) The incorporation of intelligence within a frequency hopping spread spectrum system that permits the system to recognize other users within the spectrum band so that it individually and independently chooses and adapts its hopsets to avoid hopping on occupied channels is permitted. The coordination of frequency hopping systems in any other manner for the express purpose of avoiding the simultaneous occupancy of individual hopping frequencies by multiple transmitters is not permitted. 7.11.2 Frequency Hopping System This transmitter device is frequency hopping device, and complies with FCC part 15.247 rule. This device uses Bluetooth radio which operates in 2400-2483.5 MHz band. Bluetooth uses a radio technology called frequency-hopping spread spectrum, which chops up the data being sent and transmits chunks of it on up to 79 bands (1 MHz each; centred from 2402 to 2480 MHz) in the range 2,400-2,483.5 MHz. The transmitter switches hop frequencies 1,600 times per second to assure a high degree of data security. All Bluetooth devices participating in a given piconet are synchronized to the frequency-hopping channel for the piconet. The frequency hopping sequence is determined by the master's device address and the phase of the hopping sequence (the frequency to hop at a specific time) is determined by the master's internal clock. Therefore, all slaves in a piconet must know the master's device address and must synchronize their clocks with the master's clock. Adaptive Frequency Hopping (AFH) was introduced in the Bluetooth specification to provide an effective way for a Bluetooth radio to counteract normal interference. AFH identifies "bad" channels, where either other wireless devices are interfering with the Bluetooth signal or the Bluetooth signal is interfering with another device. The AFH-enabled Bluetooth device will then communicate with other devices within its piconet to share details of any identified bad channels. The devices will then switch to alternative available "good" channels, away from the areas of interference, thus having no impact on the bandwidth used. This device was tested with an bluetooth system receiver to check that the device maintained hopping synchronization, and the device complied with these requirements for FCC Part 15.247 rule. 7.11.3 EUT Pseudorandom Frequency Hopping Sequence Pseudorandom Frequency Hopping Sequence Table as below: Channel: 08, 24, 40, 56, 40, 56, 72, 09, 01, 09, 33, 41, 33, 41, 65, 73, 53, 69, 06, 22, 04, 20, 36, 52, 38, 46, 70, 78, 68, 76, 21, 29, 10, 26, 42, 58, 44, 60, 76, 13, 03, 11, 35, 43, 37, 45, 69, 77, 55, 71, 08, 24, 08, 24, 40, 56, 40, 48, 72, 01, 72, 01, 25, 33, 12, 28, 44, 60, 42, 58, 74, 11, 05, 13, 37, 45 etc. The system receiver have input bandwidths that match the hopping channel bandwidths of their corresponding transmitters and shift frequencies in synchronization with the transmitted signals. Version.1.3 Page 40 of 114 Report No.: STR230130002001E 8 TEST RESULTS 8.1 LEFT 8.1.1 Dwell Time Condition NVNT NVNT NVNT NVNT NVNT NVNT Mode 1-DH1 1-DH3 1-DH5 2-DH1 2-DH3 2-DH5 Frequency (MHz) 2441 2441 2441 2441 2441 2441 Antenna Ant1 Ant1 Ant1 Ant1 Ant1 Ant1 Pulse Time (ms) 0.381 1.64 2.888 0.393 1.645 2.896 Total Dwell Time (ms) 76.962 216.48 268.584 83.709 189.175 260.64 Burst Count 202 132 93 213 115 90 Period Time (ms) 31600 31600 31600 31600 31600 31600 Limit (ms) 400 400 400 400 400 400 Verdict Pass Pass Pass Pass Pass Pass Version.1.3 Page 41 of 114 Report No.: STR230130002001E Test Graphs Dwell NVNT 1-DH1 2441MHz Ant1 One Burst Dwell NVNT 1-DH1 2441MHz Ant1 Accumulated Version.1.3 Page 42 of 114 Report No.: STR230130002001E Dwell NVNT 1-DH3 2441MHz Ant1 One Burst Dwell NVNT 1-DH3 2441MHz Ant1 Accumulated Version.1.3 Page 43 of 114 Report No.: STR230130002001E Dwell NVNT 1-DH5 2441MHz Ant1 One Burst Dwell NVNT 1-DH5 2441MHz Ant1 Accumulated Version.1.3 Page 44 of 114 Report No.: STR230130002001E Dwell NVNT 2-DH1 2441MHz Ant1 One Burst Dwell NVNT 2-DH1 2441MHz Ant1 Accumulated Version.1.3 Page 45 of 114 Report No.: STR230130002001E Dwell NVNT 2-DH3 2441MHz Ant1 One Burst Dwell NVNT 2-DH3 2441MHz Ant1 Accumulated Version.1.3 Page 46 of 114 Report No.: STR230130002001E Dwell NVNT 2-DH5 2441MHz Ant1 One Burst Dwell NVNT 2-DH5 2441MHz Ant1 Accumulated Version.1.3 Page 47 of 114 Report No.: STR230130002001E 8.1.2 Maximum Conducted Output Power Condition Mode NVNT NVNT NVNT NVNT NVNT NVNT 1-DH5 1-DH5 1-DH5 2-DH5 2-DH5 2-DH5 Frequency (MHz) 2402 2441 2480 2402 2441 2480 Antenna Ant1 Ant1 Ant1 Ant1 Ant1 Ant1 Conducted Power (dBm) -2 -2.32 -3.22 -1.22 -1.53 -2.37 Limit (dBm) 21 21 21 21 21 21 Verdict Pass Pass Pass Pass Pass Pass Version.1.3 Page 48 of 114 Report No.: STR230130002001E Test Graphs Power NVNT 1-DH5 2402MHz Ant1 Power NVNT 1-DH5 2441MHz Ant1 Version.1.3 Page 49 of 114 Report No.: STR230130002001E Power NVNT 1-DH5 2480MHz Ant1 Power NVNT 2-DH5 2402MHz Ant1 Version.1.3 Page 50 of 114 Report No.: STR230130002001E Power NVNT 2-DH5 2441MHz Ant1 Power NVNT 2-DH5 2480MHz Ant1 Version.1.3 Page 51 of 114 Report No.: STR230130002001E 8.1.3 -20dB Bandwidth Condition Mode NVNT NVNT NVNT NVNT NVNT NVNT 1-DH5 1-DH5 1-DH5 2-DH5 2-DH5 2-DH5 Frequency (MHz) 2402 2441 2480 2402 2441 2480 Antenna Ant1 Ant1 Ant1 Ant1 Ant1 Ant1 -20 dB Bandwidth (MHz) 0.948 0.972 1.006 1.284 1.284 1.316 Verdict Pass Pass Pass Pass Pass Pass Version.1.3 Page 52 of 114 Report No.: STR230130002001E Test Graphs -20dB Bandwidth NVNT 1-DH5 2402MHz Ant1 -20dB Bandwidth NVNT 1-DH5 2441MHz Ant1 Version.1.3 Page 53 of 114 Report No.: STR230130002001E -20dB Bandwidth NVNT 1-DH5 2480MHz Ant1 -20dB Bandwidth NVNT 2-DH5 2402MHz Ant1 Version.1.3 Page 54 of 114 Report No.: STR230130002001E -20dB Bandwidth NVNT 2-DH5 2441MHz Ant1 -20dB Bandwidth NVNT 2-DH5 2480MHz Ant1 Version.1.3 Page 55 of 114 Report No.: STR230130002001E 8.1.4 Carrier Frequencies Separation Condition Mode Antenna NVNT NVNT NVNT NVNT NVNT NVNT 1-DH5 1-DH5 1-DH5 2-DH5 2-DH5 2-DH5 Ant1 Ant1 Ant1 Ant1 Ant1 Ant1 Hopping Freq1 (MHz) 2402.018 2441.082 2479.016 2401.858 2441.035 2479.035 Hopping Freq2 (MHz) 2403 2442.082 2480.082 2403.018 2441.932 2480.103 HFS (MHz) 0.982 1 1.066 1.16 0.897 1.068 Limit (MHz) 0.632 0.648 0.671 0.856 0.856 0.877 Verdict Pass Pass Pass Pass Pass Pass Version.1.3 Page 56 of 114 Test Graphs CFS NVNT 1-DH5 2402MHz Ant1 Report No.: STR230130002001E CFS NVNT 1-DH5 2441MHz Ant1 Version.1.3 Page 57 of 114 CFS NVNT 1-DH5 2480MHz Ant1 Report No.: STR230130002001E CFS NVNT 2-DH5 2402MHz Ant1 Version.1.3 Page 58 of 114 CFS NVNT 2-DH5 2441MHz Ant1 Report No.: STR230130002001E CFS NVNT 2-DH5 2480MHz Ant1 Version.1.3 Page 59 of 114 Report No.: STR230130002001E 8.1.5 Number of Hopping Channel Condition NVNT NVNT Mode 1-DH5 2-DH5 Antenna Ant1 Ant1 Hopping Number 79 79 Test Graphs Hopping No. NVNT 1-DH5 2402MHz Ant1 Limit 15 15 Verdict Pass Pass Hopping No. NVNT 2-DH5 2402MHz Ant1 Version.1.3 Page 60 of 114 Report No.: STR230130002001E 8.1.6 Band Edge Condition Mode NVNT NVNT NVNT NVNT 1-DH5 1-DH5 2-DH5 2-DH5 Frequency (MHz) 2402 2480 2402 2480 Antenna Ant1 Ant1 Ant1 Ant1 Hopping Mode No-Hopping No-Hopping No-Hopping No-Hopping Max Value (dBc) -48.61 -49.01 -45.96 -49.03 Limit (dBc) -20 -20 -20 -20 Verdict Pass Pass Pass Pass Version.1.3 Page 61 of 114 Report No.: STR230130002001E Test Graphs Band Edge NVNT 1-DH5 2402MHz Ant1 No-Hopping Ref Band Edge NVNT 1-DH5 2402MHz Ant1 No-Hopping Emission Version.1.3 Page 62 of 114 Report No.: STR230130002001E Band Edge NVNT 1-DH5 2480MHz Ant1 No-Hopping Ref Band Edge NVNT 1-DH5 2480MHz Ant1 No-Hopping Emission Version.1.3 Page 63 of 114 Report No.: STR230130002001E Band Edge NVNT 2-DH5 2402MHz Ant1 No-Hopping Ref Band Edge NVNT 2-DH5 2402MHz Ant1 No-Hopping Emission Version.1.3 Page 64 of 114 Report No.: STR230130002001E Band Edge NVNT 2-DH5 2480MHz Ant1 No-Hopping Ref Band Edge NVNT 2-DH5 2480MHz Ant1 No-Hopping Emission Version.1.3 Page 65 of 114 Report No.: STR230130002001E 8.1.7 Band Edge(Hopping) Condition Mode NVNT NVNT NVNT NVNT 1-DH5 1-DH5 2-DH5 2-DH5 Frequency (MHz) 2402 2480 2402 2480 Antenna Ant1 Ant1 Ant1 Ant1 Hopping Mode Hopping Hopping Hopping Hopping Max Value (dBc) -48.59 -49.59 -48.14 -48.34 Limit (dBc) -20 -20 -20 -20 Verdict Pass Pass Pass Pass Version.1.3 Page 66 of 114 Report No.: STR230130002001E Test Graphs Band Edge(Hopping) NVNT 1-DH5 2402MHz Ant1 Hopping Ref Band Edge(Hopping) NVNT 1-DH5 2402MHz Ant1 Hopping Emission Version.1.3 Page 67 of 114 Report No.: STR230130002001E Band Edge(Hopping) NVNT 1-DH5 2480MHz Ant1 Hopping Ref Band Edge(Hopping) NVNT 1-DH5 2480MHz Ant1 Hopping Emission Version.1.3 Page 68 of 114 Report No.: STR230130002001E Band Edge(Hopping) NVNT 2-DH5 2402MHz Ant1 Hopping Ref Band Edge(Hopping) NVNT 2-DH5 2402MHz Ant1 Hopping Emission Version.1.3 Page 69 of 114 Report No.: STR230130002001E Band Edge(Hopping) NVNT 2-DH5 2480MHz Ant1 Hopping Ref Band Edge(Hopping) NVNT 2-DH5 2480MHz Ant1 Hopping Emission Version.1.3 Page 70 of 114 Report No.: STR230130002001E 8.1.8 Conducted RF Spurious Emission Condition NVNT NVNT NVNT NVNT NVNT NVNT Mode 1-DH5 1-DH5 1-DH5 2-DH5 2-DH5 2-DH5 Frequency (MHz) 2402 2441 2480 2402 2441 2480 Antenna Ant1 Ant1 Ant1 Ant1 Ant1 Ant1 Max Value (dBc) -43.43 -42.63 -42.09 -43.78 -42.67 -40.96 Limit (dBc) -20 -20 -20 -20 -20 -20 Verdict Pass Pass Pass Pass Pass Pass Version.1.3 Page 71 of 114 Report No.: STR230130002001E Test Graphs Tx. Spurious NVNT 1-DH5 2402MHz Ant1 Ref Tx. Spurious NVNT 1-DH5 2402MHz Ant1 Emission Version.1.3 Page 72 of 114 Report No.: STR230130002001E Tx. Spurious NVNT 1-DH5 2441MHz Ant1 Ref Tx. Spurious NVNT 1-DH5 2441MHz Ant1 Emission Version.1.3 Page 73 of 114 Report No.: STR230130002001E Tx. Spurious NVNT 1-DH5 2480MHz Ant1 Ref Tx. Spurious NVNT 1-DH5 2480MHz Ant1 Emission Version.1.3 Page 74 of 114 Report No.: STR230130002001E Tx. Spurious NVNT 2-DH5 2402MHz Ant1 Ref Tx. Spurious NVNT 2-DH5 2402MHz Ant1 Emission Version.1.3 Page 75 of 114 Report No.: STR230130002001E Tx. Spurious NVNT 2-DH5 2441MHz Ant1 Ref Tx. Spurious NVNT 2-DH5 2441MHz Ant1 Emission Version.1.3 Page 76 of 114 Report No.: STR230130002001E Tx. Spurious NVNT 2-DH5 2480MHz Ant1 Ref Tx. Spurious NVNT 2-DH5 2480MHz Ant1 Emission Version.1.3 Page 77 of 114 Report No.: STR230130002001E 8.2 RIGHT: 8.2.1 Dwell Time Condition Mode Frequency (MHz) Antenna NVNT NVNT NVNT NVNT NVNT NVNT 1-DH1 1-DH3 1-DH5 2-DH1 2-DH3 2-DH5 2441 2441 2441 2441 2441 2441 Ant1 Ant1 Ant1 Ant1 Ant1 Ant1 Pulse Time (ms) 0.381 1.64 2.896 0.393 1.645 2.896 Total Dwell Time (ms) 70.485 195.16 251.952 81.351 215.495 251.952 Burst Count 185 119 87 207 131 87 Period Time (ms) 31600 31600 31600 31600 31600 31600 Limit (ms) Verdict 400 Pass 400 Pass 400 Pass 400 Pass 400 Pass 400 Pass Version.1.3 Page 78 of 114 Report No.: STR230130002001E Test Graphs Dwell NVNT 1-DH1 2441MHz Ant1 One Burst Dwell NVNT 1-DH1 2441MHz Ant1 Accumulated Version.1.3 Page 79 of 114 Report No.: STR230130002001E Dwell NVNT 1-DH3 2441MHz Ant1 One Burst Dwell NVNT 1-DH3 2441MHz Ant1 Accumulated Version.1.3 Page 80 of 114 Report No.: STR230130002001E Dwell NVNT 1-DH5 2441MHz Ant1 One Burst Dwell NVNT 1-DH5 2441MHz Ant1 Accumulated Version.1.3 Page 81 of 114 Report No.: STR230130002001E Dwell NVNT 2-DH1 2441MHz Ant1 One Burst Dwell NVNT 2-DH1 2441MHz Ant1 Accumulated Version.1.3 Page 82 of 114 Report No.: STR230130002001E Dwell NVNT 2-DH3 2441MHz Ant1 One Burst Dwell NVNT 2-DH3 2441MHz Ant1 Accumulated Version.1.3 Page 83 of 114 Report No.: STR230130002001E Dwell NVNT 2-DH5 2441MHz Ant1 One Burst Dwell NVNT 2-DH5 2441MHz Ant1 Accumulated Version.1.3 Page 84 of 114 Report No.: STR230130002001E 8.2.2 Maximum Conducted Output Power Condition NVNT NVNT NVNT NVNT NVNT NVNT Mode 1-DH5 1-DH5 1-DH5 2-DH5 2-DH5 2-DH5 Frequency (MHz) 2402 2441 2480 2402 2441 2480 Antenna Ant1 Ant1 Ant1 Ant1 Ant1 Ant1 Conducted Power (dBm) -2.42 -2.74 -3.5 -1.67 -1.93 -2.71 Limit (dBm) 21 21 21 21 21 21 Verdict Pass Pass Pass Pass Pass Pass Version.1.3 Page 85 of 114 Report No.: STR230130002001E Test Graphs Power NVNT 1-DH5 2402MHz Ant1 Power NVNT 1-DH5 2441MHz Ant1 Version.1.3 Page 86 of 114 Report No.: STR230130002001E Power NVNT 1-DH5 2480MHz Ant1 Power NVNT 2-DH5 2402MHz Ant1 Version.1.3 Page 87 of 114 Report No.: STR230130002001E Power NVNT 2-DH5 2441MHz Ant1 Power NVNT 2-DH5 2480MHz Ant1 Version.1.3 Page 88 of 114 Report No.: STR230130002001E 8.2.3 -20dB Bandwidth Condition Mode NVNT NVNT NVNT NVNT NVNT NVNT 1-DH5 1-DH5 1-DH5 2-DH5 2-DH5 2-DH5 Frequency (MHz) 2402 2441 2480 2402 2441 2480 Antenna Ant1 Ant1 Ant1 Ant1 Ant1 Ant1 -20 dB Bandwidth (MHz) 1.012 0.962 1.004 1.276 1.294 1.284 Verdict Pass Pass Pass Pass Pass Pass Version.1.3 Page 89 of 114 Report No.: STR230130002001E Test Graphs -20dB Bandwidth NVNT 1-DH5 2402MHz Ant1 -20dB Bandwidth NVNT 1-DH5 2441MHz Ant1 Version.1.3 Page 90 of 114 Report No.: STR230130002001E -20dB Bandwidth NVNT 1-DH5 2480MHz Ant1 -20dB Bandwidth NVNT 2-DH5 2402MHz Ant1 Version.1.3 Page 91 of 114 Report No.: STR230130002001E -20dB Bandwidth NVNT 2-DH5 2441MHz Ant1 -20dB Bandwidth NVNT 2-DH5 2480MHz Ant1 Version.1.3 Page 92 of 114 Report No.: STR230130002001E 8.2.4 Carrier Frequencies Separation Condition Mode Antenna NVNT NVNT NVNT NVNT NVNT NVNT 1-DH5 1-DH5 1-DH5 2-DH5 2-DH5 2-DH5 Ant1 Ant1 Ant1 Ant1 Ant1 Ant1 Hopping Freq1 (MHz) 2402.08 2441.08 2479.08 2402.018 2440.853 2479.105 Hopping Freq2 (MHz) 2403.018 2442.018 2480.08 2403.018 2442.036 2480.1 HFS (MHz) 0.938 0.938 1 1 1.183 0.995 Limit (MHz) 0.675 0.641 0.669 0.851 0.863 0.856 Verdict Pass Pass Pass Pass Pass Pass Version.1.3 Page 93 of 114 Test Graphs CFS NVNT 1-DH5 2402MHz Ant1 Report No.: STR230130002001E CFS NVNT 1-DH5 2441MHz Ant1 Version.1.3 Page 94 of 114 CFS NVNT 1-DH5 2480MHz Ant1 Report No.: STR230130002001E CFS NVNT 2-DH5 2402MHz Ant1 Version.1.3 Page 95 of 114 CFS NVNT 2-DH5 2441MHz Ant1 Report No.: STR230130002001E CFS NVNT 2-DH5 2480MHz Ant1 Version.1.3 Page 96 of 114 Report No.: STR230130002001E 8.2.5 Number of Hopping Channel Condition NVNT NVNT Mode 1-DH5 2-DH5 Antenna Ant1 Ant1 Hopping Number 79 79 Test Graphs Hopping No. NVNT 1-DH5 2402MHz Ant1 Limit 15 15 Verdict Pass Pass Hopping No. NVNT 2-DH5 2402MHz Ant1 Version.1.3 Page 97 of 114 Report No.: STR230130002001E 8.2.6 Band Edge Condition Mode NVNT NVNT NVNT NVNT 1-DH5 1-DH5 2-DH5 2-DH5 Frequency (MHz) 2402 2480 2402 2480 Antenna Ant1 Ant1 Ant1 Ant1 Hopping Mode No-Hopping No-Hopping No-Hopping No-Hopping Max Value (dBc) -48.99 -48.95 -47.29 -46.8 Limit (dBc) -20 -20 -20 -20 Verdict Pass Pass Pass Pass Version.1.3 Page 98 of 114 Report No.: STR230130002001E Test Graphs Band Edge NVNT 1-DH5 2402MHz Ant1 No-Hopping Ref Band Edge NVNT 1-DH5 2402MHz Ant1 No-Hopping Emission Version.1.3 Page 99 of 114 Report No.: STR230130002001E Band Edge NVNT 1-DH5 2480MHz Ant1 No-Hopping Ref Band Edge NVNT 1-DH5 2480MHz Ant1 No-Hopping Emission Version.1.3 Page 100 of 114 Report No.: STR230130002001E Band Edge NVNT 2-DH5 2402MHz Ant1 No-Hopping Ref Band Edge NVNT 2-DH5 2402MHz Ant1 No-Hopping Emission Version.1.3 Page 101 of 114 Report No.: STR230130002001E Band Edge NVNT 2-DH5 2480MHz Ant1 No-Hopping Ref Band Edge NVNT 2-DH5 2480MHz Ant1 No-Hopping Emission Version.1.3 Page 102 of 114 Report No.: STR230130002001E 8.2.7 Band Edge(Hopping) Condition Mode NVNT NVNT NVNT NVNT 1-DH5 1-DH5 2-DH5 2-DH5 Frequency (MHz) 2402 2480 2402 2480 Antenna Ant1 Ant1 Ant1 Ant1 Hopping Mode Hopping Hopping Hopping Hopping Max Value (dBc) -48.13 -48.36 -47.95 -48.59 Limit (dBc) -20 -20 -20 -20 Verdict Pass Pass Pass Pass Version.1.3 Page 103 of 114 Report No.: STR230130002001E Test Graphs Band Edge(Hopping) NVNT 1-DH5 2402MHz Ant1 Hopping Ref Band Edge(Hopping) NVNT 1-DH5 2402MHz Ant1 Hopping Emission Version.1.3 Page 104 of 114 Report No.: STR230130002001E Band Edge(Hopping) NVNT 1-DH5 2480MHz Ant1 Hopping Ref Band Edge(Hopping) NVNT 1-DH5 2480MHz Ant1 Hopping Emission Version.1.3 Page 105 of 114 Report No.: STR230130002001E Band Edge(Hopping) NVNT 2-DH5 2402MHz Ant1 Hopping Ref Band Edge(Hopping) NVNT 2-DH5 2402MHz Ant1 Hopping Emission Version.1.3 Page 106 of 114 Report No.: STR230130002001E Band Edge(Hopping) NVNT 2-DH5 2480MHz Ant1 Hopping Ref Band Edge(Hopping) NVNT 2-DH5 2480MHz Ant1 Hopping Emission Version.1.3 Page 107 of 114 Report No.: STR230130002001E 8.2.8 Conducted RF Spurious Emission Condition NVNT NVNT NVNT NVNT NVNT NVNT Mode 1-DH5 1-DH5 1-DH5 2-DH5 2-DH5 2-DH5 Frequency (MHz) 2402 2441 2480 2402 2441 2480 Antenna Ant1 Ant1 Ant1 Ant1 Ant1 Ant1 Max Value (dBc) -43.12 -42.69 -41.99 -42.15 -42.95 -42.44 Limit (dBc) -20 -20 -20 -20 -20 -20 Verdict Pass Pass Pass Pass Pass Pass Version.1.3 Page 108 of 114 Report No.: STR230130002001E Test Graphs Tx. Spurious NVNT 1-DH5 2402MHz Ant1 Ref Tx. Spurious NVNT 1-DH5 2402MHz Ant1 Emission Version.1.3 Page 109 of 114 Report No.: STR230130002001E Tx. Spurious NVNT 1-DH5 2441MHz Ant1 Ref Tx. Spurious NVNT 1-DH5 2441MHz Ant1 Emission Version.1.3 Page 110 of 114 Report No.: STR230130002001E Tx. Spurious NVNT 1-DH5 2480MHz Ant1 Ref Tx. Spurious NVNT 1-DH5 2480MHz Ant1 Emission Version.1.3 Page 111 of 114 Report No.: STR230130002001E Tx. Spurious NVNT 2-DH5 2402MHz Ant1 Ref Tx. Spurious NVNT 2-DH5 2402MHz Ant1 Emission Version.1.3 Page 112 of 114 Report No.: STR230130002001E Tx. Spurious NVNT 2-DH5 2441MHz Ant1 Ref Tx. Spurious NVNT 2-DH5 2441MHz Ant1 Emission Version.1.3 Page 113 of 114 Report No.: STR230130002001E Tx. Spurious NVNT 2-DH5 2480MHz Ant1 Ref Tx. Spurious NVNT 2-DH5 2480MHz Ant1 Emission Version.1.3 END OF REPORT Page 114 of 114
Related FCC IDs:
- 2A7DX-AIRBUDS10 - DOKE COMMUNICATION (HK) LIMITED Wireless Earphone [-AIRBUDS10] Microsoft Office Word 2007