Test Report
KREAFUNK ApS BUZZJUNIOR Safe Audio Headphones 2ACVC-BUZZJUNIOR 2ACVCBUZZJUNIOR buzzjunior
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Document DEVICE REPORTGetApplicationAttachment.html?id=7218602Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 FCC CERTIFICATION TEST REPORT Applicant : KREAFUNK APS Address of Applicant : Klamsagervej 35 A, st.8230 Abyhoj,Denmark Manufacturer : Shen Zhen Lighkeep Co., Ltd. 3&4 Floor, No.19 Plant, Baotong South Road, Address of Manufacturer : XikengCommunity, Yuanshan Street, Longgang DistrictShenzhen Equipment under Test : Safe Audio Headphone Model No. : Buzz junior FCC ID Test Standard(s) Report No. : 2ACVC-BUZZJUNIOR : FCC Rules and Regulations Part 15 Subpart C, ANSI C63.10:2013 : DDT-RE24010331-3E03 Issue Date Issue By : 2024/03/19 Guangdong Dongdian Testing Service Co., Ltd. : Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 1 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Table of Contents 1. Summary of Test Results ............................................................................................. 7 2. General Test Information .............................................................................................. 8 2.1. Description of EUT........................................................................................................ 8 2.2. Accessories of EUT ...................................................................................................... 9 2.3. Block diagram of EUT configuration for test................................................................. 9 2.4. Decision of final test mode ........................................................................................... 9 2.5. Deviations of test standard ......................................................................................... 10 2.6. Test environment conditions....................................................................................... 10 2.7. Test laboratory ............................................................................................................ 10 2.8. Measurement uncertainty ........................................................................................... 11 3. Equipment Used During Conductive Test .................................................................. 12 4. 20 dB Bandwidth......................................................................................................... 13 4.1. Block diagram of test setup ........................................................................................ 13 4.2. Limits........................................................................................................................... 13 4.3. Test procedure............................................................................................................ 13 4.4. Test result ................................................................................................................... 14 4.5. Test graphs ................................................................................................................. 15 5. 99% Bandwidth ........................................................................................................... 18 5.1. Block diagram of test setup ........................................................................................ 18 5.2. Limits........................................................................................................................... 18 5.3. Test procedure............................................................................................................ 18 5.4. Test result ................................................................................................................... 19 5.5. Test graphs ................................................................................................................. 20 6. Maximum Peak Output Power.................................................................................... 23 6.1. Block diagram of test setup ........................................................................................ 23 6.2. Limits........................................................................................................................... 23 6.3. Test procedure............................................................................................................ 23 6.4. Test result ................................................................................................................... 24 6.5. Test graphs ................................................................................................................. 25 7. Carrier Frequency Separation .................................................................................... 28 7.1. Block diagram of test setup ........................................................................................ 28 7.2. Limits........................................................................................................................... 28 7.3. Test procedure............................................................................................................ 28 7.4. Test result ................................................................................................................... 29 7.5. Test graphs ................................................................................................................. 30 8. Dwell Time .................................................................................................................. 31 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 2 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 8.1. 8.2. 8.3. 8.4. 8.5. 9. 9.1. 9.2. 9.3. 9.4. 9.5. 10. 10.1. 10.2. 10.3. 10.4. 10.5. 11. 11.1. 11.2. 11.3. 11.4. 11.5. 12. 12.1. 12.2. 12.3. 12.4. 12.5. 13. 13.1. 13.2. 13.3. 13.4. 13.5. 13.6. 13.7. 14. Block diagram of test setup ........................................................................................ 31 Limits........................................................................................................................... 31 Test procedure............................................................................................................ 31 Test result ................................................................................................................... 32 Test graphs ................................................................................................................. 33 Number of Hopping Channel ...................................................................................... 39 Block diagram of test setup ........................................................................................ 39 Limits........................................................................................................................... 39 Test procedure............................................................................................................ 39 Test result ................................................................................................................... 40 Test graphs ................................................................................................................. 41 Band Edge Compliance (Conducted Method)............................................................ 42 Block diagram of test setup ........................................................................................ 42 Limit............................................................................................................................. 42 Test procedure............................................................................................................ 42 Test result ................................................................................................................... 43 Test graphs ................................................................................................................. 44 RF Conducted Spurious Emissions............................................................................ 48 Block diagram of test setup ........................................................................................ 48 Limits........................................................................................................................... 48 Test procedure............................................................................................................ 48 Test result ................................................................................................................... 49 Test graphs ................................................................................................................. 50 Duty cycle ................................................................................................................... 59 Block diagram of test setup ........................................................................................ 59 Limit............................................................................................................................. 59 Test procedure............................................................................................................ 59 Test result ................................................................................................................... 60 Test graphs ................................................................................................................. 61 Radiated Emission ...................................................................................................... 64 Test equipment ........................................................................................................... 64 Block diagram of test setup ........................................................................................ 64 Limits........................................................................................................................... 65 Assistant equipment used for test .............................................................................. 66 Test procedure............................................................................................................ 66 Test result ................................................................................................................... 68 Test data ..................................................................................................................... 69 Band Edge Compliance .............................................................................................. 89 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 3 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 14.1. 14.2. 14.3. 14.4. 14.5. 14.6. 14.7. 15. 15.1. 15.2. 15.3. 15.4. 15.5. 15.6. 15.7. 16. 17. Test equipment ........................................................................................................... 89 Block diagram of test setup ........................................................................................ 89 Limits........................................................................................................................... 89 Assistant equipment used for test .............................................................................. 89 Test procedure............................................................................................................ 89 Test result ................................................................................................................... 89 Test data ..................................................................................................................... 90 Power Line Conducted Emissions............................................................................ 102 Test equipment ......................................................................................................... 102 Block diagram of test setup ...................................................................................... 102 Limits......................................................................................................................... 102 Assistant equipment used for test ............................................................................ 102 Test procedure.......................................................................................................... 102 Test result ................................................................................................................. 103 Test data ................................................................................................................... 104 Test Setup Photograph............................................................................................. 106 Photos of the EUT .................................................................................................... 108 TRF No.: RT-4-E-02-001 RF test report Ver. 1.0 Page 4 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Test Report Declare Applicant Address of Applicant Equipment under Test Model No. Manufacturer Address of Manufacturer : KREAFUNK APS : Klamsagervej 35 A, st.8230 Abyhoj,Denmark : Safe Audio Headphone : Buzz junior : Shen Zhen Lighkeep Co., Ltd. 3&4 Floor, No.19 Plant, Baotong South Road, : XikengCommunity, Yuanshan Street, Longgang DistrictShenzhen Test Standard Used: FCC Rules and Regulations Part 15 Subpart C, ANSI C63.10:2013 We Declare: The equipment described above is tested by Guangdong Dongdian Testing Service Co., Ltd. and in the configuration tested the equipment complied with the standards specified above. The test results are contained in this test report and Guangdong Dongdian Testing Service Co., Ltd. is assumed of full responsibility for the accuracy and completeness of these tests. Report No.: DDT-RE24010331-3E03 Date of Receipt: 2024/01/26 Date of Test: 2024/01/26~2024/03/18 Prepared By: Approved By: _____________________ Tiger Mo/Engineer ______________________ Damon Hu/EMC Manager Note: This report applies to above tested sample only. This report shall not be reproduced in parts without written approval of Guangdong Dongdian Testing Service Co., Ltd. Page 5 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Rev. Revisions --- Initial issue Revision History Issue Date 2024/03/19 Revised By Page 6 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 1. Summary of Test Results No. Test Parameter Clause No. Condition Result Maximum Peak Output 1 FCC Part 15: 15.247(b)(1) / Power Pass 2 20 dB Bandwidth FCC Part 15: 15.247(a)(1) / Pass Carrier Frequency 3 FCC Part 15: 15.247(a)(1) / Separation Pass Number of Hopping 4 FCC Part 15: 15.247(a)(1)(iii) / Channel Pass 5 Dwell Time FCC Part 15: 15.247(a)(1)(iii) / Pass RF Conducted Spurious 6 FCC Part 15: 15.247(d) / Pass Emissions FCC Part 15: 15.205, FCC 7 Radiated Emission Part 15: 15.209, FCC Part 15: / 15.247(d) Pass FCC Part 15: 15.205, FCC 8 Band Edge Compliance Part 15: 15.209, FCC Part 15: / 15.247(d) Pass Power Line Conducted 9 FCC Part 15: 15.207(a) / Pass Emissions 10 Antenna Requirement FCC Part 15: 15.203 / Pass Note: N/A is an abbreviation for Not Applicable, and means this item is not applicable for this device or no need to test according to standard. Page 7 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 2. General Test Information 2.1. Description of EUT EUT Name Model Number EUT Function Description Power Supply : Safe Audio Headphone : Buzz junior : Please reference user manual of this device : DC 5V by external AC Adapter or 3.7V built-in lithium battery Note: This EUT support Bluetooth BR/EDR,NFC, this report only for Bluetooth BR/EDR. Radio Specification : Bluetooth BR/EDR Operation Frequency : 2402 MHz-2480 MHz Modulation : GFSK, /4-DQPSK, 8DPSK Antenna information Antenna Type Max Antenna Gain(dBi) : PCB : 0 Channel information Channel Frequency (MHz) 0 2402 1 2403 2 2404 3 2405 4 2406 5 2407 6 2408 7 2409 8 2410 9 2411 10 2412 11 2413 12 2414 13 2415 14 2416 15 2417 16 2418 17 2419 18 2420 19 2421 20 2422 21 2423 Channel 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Frequency (MHz) 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 Channel 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 Frequency (MHz) 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 Page 8 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 22 2424 49 2451 76 2478 23 2425 50 2452 77 2479 24 2426 51 2453 78 2480 25 2427 52 2454 26 2428 53 2455 Note: The above EUT information is declared by manufacturer and for more detailed features description please refer to the manufacturer's specifications or User's Manual. The above Antenna information is declared by manufacturer and for more detailed features description please refer to the manufacturer's specifications, the laboratory shall not be held responsible. "" means to be chosen or applicable; "" means don't to be chosen or not applicable; This note applies to entire report. 2.2. Accessories of EUT Accessories / Manufacturer Model number / / Description / 2.3. Block diagram of EUT configuration for test Configuration diagram 2.4. Decision of final test mode According pre-test, the worst test modes were reported as below: Test software: FCC_assist_1.0.2.2.exe The test software was used to control EUT work in Continuous Tx mode, and select test channel, wireless mode as below table. The pathloss of external cable: 0.5 dB (According to the manufacturer's claims) Tested mode, channel, information Mode GFSK hopping on Tx mode p/4-DQPSK hopping on Tx mode 8DPSK hopping on Tx mode GFSK hopping off Tx mode Setting Tx Power 10 10 10 10 10 10 Channel CH0 to CH78 CH0 to CH78 CH0 to CH78 CH0 CH39 CH78 Frequency (MHz) 2402 to 2480 2402 to 2480 2402 to 2480 2402 2441 2480 10 CH0 2402 Page 9 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 p/4-DQPSK hopping 10 off Tx mode 10 CH39 CH78 2441 2480 10 8DPSK hopping off Tx mode 10 10 CH0 CH39 CH78 2402 2441 2480 Worst-case data rates were: GFSK mode: DH5, p/4-DQPSK mode: 2DH5, 8DPSK mode: 3DH5 2.5. Deviations of test standard No deviation. 2.6. Test environment conditions During the measurement the environmental conditions were within the listed ranges: Temperature range: +15 to +35 Humidity range: 20% to 75% Pressure range: 86 kPa to106 kPa Note: The specific temperature and humidity information of each test item refers to the temperature and humidity record in the corresponding test data. 2.7. Test laboratory Guangdong Dongdian Testing Service Co., Ltd. Add.: Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808. Tel.: +86-0769-38826678, http://www.dgddt.com, Email: [email protected]. CNAS Accreditation No. L6451; A2LA Accreditation Number: 3870.01 FCC Designation Number: CN1182, Test Firm Registration Number: 540522 Innovation, Science and Economic Development Canada Site Registration Number: 10288A Conformity Assessment Body identifier: CN0048 VCCI facility registration number: C-20087, T-20088, R-20123, R-20155, G-20118 Page 10 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 2.8. Measurement uncertainty Test Item Uncertainty Bandwidth 1.1% Peak Output Power (Conducted) (Spectrum analyzer) 0.86 dB (10 MHz f < 3.6 GHz); 1.38 dB (3.6 GHz f < 8 GHz) Peak Output Power (Conducted) (Power Sensor) 0.74 dB Power Spectral Density 0.74 dB (10 MHz f < 3.6 GHz); 1.38 dB (3.6 GHz f < 8 GHz) Frequencies Stability 6.7 x 10-8 (Antenna couple method) 5.5 x 10-8 (Conducted method) 0.86 dB (10 MHz f < 3.6 GHz); Conducted spurious emissions 1.40 dB (3.6 GHz f < 8 GHz) 1.66 dB (8 GHz f < 26.5 GHz) Uncertainty for radio frequency (RBW < 20 kHz) 3×10-8 Temperature 0.4 Humidity 2 % Uncertainty for Radiation Emission test (9 kHz 30 MHz) 3.44 dB Uncertainty for Radiation Emission test (30 MHz - 1 GHz) 4.70 dB (Antenna Polarize: V) 4.84 dB (Antenna Polarize: H) 4.10 dB (1 - 6 GHz) Uncertainty for Radiation Emission test (1 GHz - 40 GHz) 4.40 dB (6 GHz - 18 GHz) 3.54 dB (18 GHz - 26 GHz) 4.30 dB (26 GHz - 40 GHz) Uncertainty for Power line conduction emission test 3.34dB (150KHz-30MHz) 3.72dB (9KHz-150KHz) Note: This uncertainty represents an expanded uncertainty expressed at approximately the 95% confidence level using a coverage factor of k=2. Page 11 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 3. Equipment Used During Conductive Test Equipment Manufacturer Model No. RF Connected Test (RF Measurement System 2#) SPECTRUM ANALYZER R&S FSU26 Power Sensor R&S NRP-Z22 Test Software Tonscend JS1120-3 Serial Number Due Date 201124 101254 Ver.3.2.22 2024/07/11 2024/07/11 N/A Page 12 of 108 Guangdong Dongdian Testing Service Co., Ltd. 4. 20 dB Bandwidth 4.1. Block diagram of test setup Report No.:DDT-RE24010331-3E03 4.2. Limits Intentional radiators operating under the alternative provisions to the general emission limits, as contained in § 15.217 through 15.257 and in Subpart E of this part, must be designed to ensure that the 20 dB bandwidth of the emission, or whatever bandwidth may otherwise be specified in the specific rule section under which the equipment operates, is contained within the frequency band designated in the rule section under which the equipment is operated. 4.3. Test procedure (1) The test according to ANSI C63.10-2013 clause 6.9.2. (2) Connect EUT's antenna output to spectrum analyzer by RF cable, the path loss was compensated to the results (3) Set the EUT as maximum power setting and enable the EUT transmit continuously (4) Use the following spectrum analyzer settings for the 20 dB bandwidth measurement: RBW: 1% to 5% of the OBW VBW: approximately three times RBW Span: between 2 times and 5 times the OBW Detector Mode: Peak Sweep time: Auto Trace mode: Max hold (5) Measure and record the results in the report. Appendix A: 20dB emission bandwidth Page 13 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 4.4. Test result Test Engineer: Ambient Condition: Test Power Supply: Sample Number: Zoe 24.3,46.1%RH Battery S24010331-011 Test Mode Antenna DH5 Ant1 2DH5 Ant1 3DH5 Ant1 Test Site: Test Date: EUT: Model No.: Frequency [MHz] 2402 2441 2480 2402 2441 2480 2402 2441 2480 RF Measurement System 2# 2024.02.21 Safe Audio Headphone Buzz junior 20dB EBW[MHz] 0.95 0.95 0.96 1.29 1.29 1.31 1.30 1.30 1.30 Page 14 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 4.5. Test graphs Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 DH5_Ant1_2402 * Att 40 dB 2 * RBW 30 kHz * VBW 100 kHz SWT 15 ms Delta 3 [T1 ] -0.96 dB 954.000000000 kHz Marker 1 [T1 ] -26.70 dBm 2.401457000 GHz A Marker 2 [T1 ] -6.70 dBm 2.401760000 GHz LVL -20 1 3 D1 -26.7 dBm -30 -40 -50 3DB -60 -70 -80 -90 Center 2.402 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 13:48:52 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 DH5_Ant1_2441 * Att 40 dB 2 * RBW 30 kHz * VBW 100 kHz SWT 15 ms Delta 3 [T1 ] -0.78 dB 951.000000000 kHz Marker 1 [T1 ] -26.32 dBm 2.440457000 GHz A Marker 2 [T1 ] -6.24 dBm 2.440760000 GHz LVL -20 1 3 D1 -26.24 dBm -30 -40 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 13:50:21 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 DH5_Ant1_2480 * Att 40 dB 2 * RBW 30 kHz * VBW 100 kHz SWT 15 ms Delta 3 [T1 ] 0.39 dB 957.000000000 kHz Marker 1 [T1 ] -27.55 dBm 2.479451000 GHz A Marker 2 [T1 ] -6.61 dBm 2.479754000 GHz LVL -20 1 3 D1 -26.61 dBm -30 -40 -50 3DB -60 -70 -80 -90 Center 2.48 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 13:52:06 Page 15 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 2DH5_Ant1_2402 * Att 40 dB * RBW 30 kHz * VBW 100 kHz SWT 15 ms 2 Delta 3 [T1 ] 0.39 dB 1.290000000 MHz Marker 1 [T1 ] -27.37 dBm 2.401289000 GHz A Marker 2 [T1 ] -6.76 dBm 2.402084000 GHz LVL -20 1 3 D1 -26.76 dBm -30 -40 -50 3DB -60 -70 -80 -90 Center 2.402 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 13:53:35 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 2DH5_Ant1_2441 * Att 40 dB * RBW 30 kHz * VBW 100 kHz SWT 15 ms 2 Delta 3 [T1 ] 0.38 dB 1.290000000 MHz Marker 1 [T1 ] -26.89 dBm 2.440286000 GHz A Marker 2 [T1 ] -6.31 dBm 2.441081000 GHz LVL -20 1 3 D1 -26.31 dBm -30 -40 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 13:55:01 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 2DH5_Ant1_2480 * Att 40 dB * RBW 30 kHz * VBW 100 kHz SWT 15 ms 2 Delta 3 [T1 ] 0.23 dB 1.314000000 MHz Marker 1 [T1 ] -26.85 dBm 2.479262000 GHz A Marker 2 [T1 ] -6.61 dBm 2.480081000 GHz LVL -20 1 3 D1 -26.61 dBm -30 -40 -50 3DB -60 -70 -80 -90 Center 2.48 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 13:56:16 3DH5_Ant1_2402 Page 16 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 * Att 40 dB 2 -20 -30 1 D1 -26.76 dBm * RBW 30 kHz * VBW 100 kHz SWT 15 ms Delta 3 [T1 ] 1.52 dB 1.299000000 MHz Marker 1 [T1 ] -28.34 dBm 2.401271000 GHz A Marker 2 [T1 ] -6.76 dBm 2.401763000 GHz LVL 3 -40 -50 3DB -60 -70 -80 -90 Center 2.402 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 13:57:48 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 3DH5_Ant1_2441 * Att 40 dB * RBW 30 kHz * VBW 100 kHz SWT 15 ms 2 Delta 3 [T1 ] 0.20 dB 1.296000000 MHz Marker 1 [T1 ] -26.84 dBm 2.440274000 GHz A Marker 2 [T1 ] -6.52 dBm 2.440916000 GHz LVL -20 1 3 D1 -26.52 dBm -30 -40 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 13:59:16 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 3DH5_Ant1_2480 * Att 40 dB 2 * RBW 30 kHz * VBW 100 kHz SWT 15 ms Delta 3 [T1 ] 1.63 dB 1.299000000 MHz Marker 1 [T1 ] -28.55 dBm 2.479271000 GHz A Marker 2 [T1 ] -6.70 dBm 2.479754000 GHz LVL -20 3 1 D1 -26.7 dBm -30 -40 -50 3DB -60 -70 -80 -90 Center 2.48 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 14:01:05 Page 17 of 108 Guangdong Dongdian Testing Service Co., Ltd. 5. 99% Bandwidth 5.1. Block diagram of test setup Report No.:DDT-RE24010331-3E03 5.2. Limits Just for Report. 5.3. Test procedure (1) The test according to ANSI C63.10-2013 clause 6.9.3. (2) Connect EUT's antenna output to spectrum analyzer by RF cable, the path loss was compensated to the results (3) Set the EUT as maximum power setting and enable the EUT transmit continuously (4) Use the following spectrum analyzer settings for the 99% bandwidth measurement: RBW: 1% to 5% of the OBW VBW: approximately three times RBW Span: between 1.5 times and 5.0 times the OBW Detector Mode: Peak Sweep time: Auto Trace mode: Max hold (5) Measure and record the results in the report. Appendix B: Occupied Channel Bandwidth Page 18 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 5.4. Test result Test Engineer: Ambient Condition: Test Power Supply: Sample Number: Zoe 24.3,46.1%RH Battery S24010331-011 Test Site: Test Date: EUT: Model No.: RF Measurement System 2# 2024.02.21 Safe Audio Headphone Buzz junior Test Mode DH5 2DH5 3DH5 Antenna Ant1 Ant1 Ant1 Frequency [MHz] 2402 2441 2480 2402 2441 2480 2402 2441 2480 OCB [MHz] 0.867 0.873 0.873 1.182 1.182 1.182 1.182 1.182 1.191 FL[MHz] 2401.4870 2440.4810 2479.4810 2401.3310 2440.3280 2479.3280 2401.3310 2440.3280 2479.3250 FH[MHz] 2402.3540 2441.3540 2480.3540 2402.5130 2441.5100 2480.5100 2402.5130 2441.5100 2480.5160 Page 19 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 5.5. Test graphs Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 -20 -30 DH5_Ant1_2402 * Att 40 dB 1 * RBW 30 kHz * VBW 100 kHz SWT 15 ms Marker 1 [T1 ] -6.72 dBm 2.401760000 GHz OBW867.000000000 kHz Temp 1 [T1 OBW] -24.27 dBm A 2.401487000 GHz Temp 2 [T1 OBW] -25.93 dBm LVL 2.402354000 GHz T1 T2 -40 -50 3DB -60 -70 -80 -90 Center 2.402 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 13:48:59 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 -20 DH5_Ant1_2441 * Att 40 dB * RBW 30 kHz * VBW 100 kHz SWT 15 ms 1 Marker 1 [T1 ] -6.55 dBm 2.440919000 GHz OBW873.000000000 kHz Temp 1 [T1 OBW] -23.35 dBm A 2.440481000 GHz Temp 2 [T1 OBW] -25.06 dBm LVL 2.441354000 GHz T1 T2 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 13:50:28 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 DH5_Ant1_2480 * Att 40 dB 1 * RBW 30 kHz * VBW 100 kHz SWT 15 ms Marker 1 [T1 ] -6.52 dBm 2.479757000 GHz OBW873.000000000 kHz Temp 1 [T1 OBW] -23.98 dBm A 2.479481000 GHz Temp 2 [T1 OBW] -26.27 dBm LVL 2.480354000 GHz -20 T1 T2 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.48 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 13:52:13 Page 20 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 2DH5_Ant1_2402 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 * Att 40 dB * RBW 30 kHz * VBW 100 kHz SWT 15 ms 1 Marker 1 [T1 ] -6.87 dBm 2.402087000 GHz OBW 1.182000000 MHz Temp 1 [T1 OBW] -21.54 dBm A 2.401331000 GHz Temp 2 [T1 OBW] -24.47 dBm LVL 2.402513000 GHz T1 -20 T2 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.402 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 13:53:41 2DH5_Ant1_2441 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 * Att 40 dB * RBW 30 kHz * VBW 100 kHz SWT 15 ms 1 Marker 1 [T1 ] -6.29 dBm 2.441081000 GHz OBW 1.182000000 MHz Temp 1 [T1 OBW] -21.53 dBm A 2.440328000 GHz Temp 2 [T1 OBW] -23.93 dBm LVL 2.441510000 GHz T1 -20 T2 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 13:55:07 2DH5_Ant1_2480 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 * Att 40 dB * RBW 30 kHz * VBW 100 kHz SWT 15 ms 1 Marker 1 [T1 ] -6.59 dBm 2.480081000 GHz OBW 1.182000000 MHz Temp 1 [T1 OBW] -21.67 dBm A 2.479328000 GHz Temp 2 [T1 OBW] -24.87 dBm LVL 2.480510000 GHz T1 -20 T2 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.48 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 13:56:22 3DH5_Ant1_2402 Page 21 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 * Att 40 dB 1 -20 T1 -30 * RBW 30 kHz * VBW 100 kHz SWT 15 ms Marker 1 [T1 ] -6.72 dBm 2.401760000 GHz OBW 1.182000000 MHz Temp 1 [T1 OBW] -23.65 dBm A 2.401331000 GHz Temp 2 [T1 OBW] -23.85 dBm LVL 2.402513000 GHz T2 -40 -50 3DB -60 -70 -80 -90 Center 2.402 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 13:57:54 3DH5_Ant1_2441 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 * Att 40 dB 1 * RBW 30 kHz * VBW 100 kHz SWT 15 ms Marker 1 [T1 ] -6.39 dBm 2.440763000 GHz OBW 1.182000000 MHz Temp 1 [T1 OBW] -22.71 dBm A 2.440328000 GHz Temp 2 [T1 OBW] -22.06 dBm LVL 2.441510000 GHz -20 T1 T2 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 13:59:22 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 3DH5_Ant1_2480 * Att 40 dB 1 * RBW 30 kHz * VBW 100 kHz SWT 15 ms Marker 1 [T1 ] -6.56 dBm 2.479757000 GHz OBW 1.191000000 MHz Temp 1 [T1 OBW] -25.57 dBm A 2.479325000 GHz Temp 2 [T1 OBW] -22.57 dBm LVL 2.480516000 GHz -20 T2 T1 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.48 GHz 300 kHz/ Span 3 MHz Date: 21.FEB.2024 14:01:12 Page 22 of 108 Guangdong Dongdian Testing Service Co., Ltd. 6. Maximum Peak Output Power 6.1. Block diagram of test setup Report No.:DDT-RE24010331-3E03 6.2. Limits For frequency hopping systems operating in the 2400-2483.5 MHz band employing at least 75 nonoverlapping 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, the e.i.r.p shall not exceed 4W. 6.3. Test procedure (1) The test according to ANSI C63.10-2013 clause 7.8.5. (2) Connect EUT's antenna output to spectrum analyzer by RF cable, the path loss was compensated to the results. (3) Set the EUT as maximum power setting and enable the EUT transmit continuously. (4) Use the following spectrum analyzer settings for the maximum peak output power measurement: RBW: > 20 dB bandwidth of the emission being measured. VBW: VBW RBW. Span: Approximately five times the 20 dB bandwidth, centered on a hopping channel. Detector Mode: Peak Sweep time: Auto Trace mode: Max hold (5) Use the marker-to-peak function to set the marker to the peak of the emission and record the results in the report. AppendixC:Maximum conducted output power TestResult Peak Appendix C:Maximum conducted output power Page 23 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 6.4. Test result Test Engineer: Ambient Condition: Test Power Supply: Sample Number: Zoe 24.3,46.1%RH Battery S24010331-011 Test Site: Test Date: EUT: Model No.: RF Measurement System 2# 2024.02.21 Safe Audio Headphone Buzz junior Test Mode DH5 2DH5 3DH5 Anten na Ant1 Ant1 Ant1 Frequency [MHz] 2402 2441 2480 2402 2441 2480 2402 2441 2480 Conducted Peak Power[dBm] -3.90 -3.41 -3.65 -3.30 -2.79 -3.12 -2.79 -2.27 -2.66 Conducted Limit[dBm] 20.97 20.97 20.97 20.97 20.97 20.97 20.97 20.97 20.97 EIRP[dBm] -3.90 -3.41 -3.65 -3.30 -2.79 -3.12 -2.79 -2.27 -2.66 EIRP Limit[dBm] 30 30 30 30 30 30 30 30 30 Verdict PASS PASS PASS PASS PASS PASS PASS PASS PASS Page 24 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 6.5. Test graphs Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 DH5_Ant1_2402 * Att 40 dB * RBW 3 MHz * VBW 10 MHz SWT 5 ms Marker 1 [T1 ] -3.90 dBm 2.401570000 GHz A 1 LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.402 GHz 1 MHz/ Span 10 MHz Date: 21.FEB.2024 13:42:07 Ref 10 dBm 10 Offset 1.5 dB DH5_Ant1_2441 * Att 40 dB * RBW 3 MHz * VBW 10 MHz SWT 5 ms Marker 1 [T1 ] -3.41 dBm 2.440680000 GHz 0 1 1 PK VIEW -10 A LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 1 MHz/ Span 10 MHz Date: 21.FEB.2024 13:42:31 Ref 10 dBm 10 Offset 1.5 dB DH5_Ant1_2480 * Att 40 dB * RBW 3 MHz * VBW 10 MHz SWT 5 ms Marker 1 [T1 ] -3.65 dBm 2.479880000 GHz 0 1 1 PK VIEW -10 A LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.48 GHz 1 MHz/ Span 10 MHz Date: 21.FEB.2024 13:42:50 Page 25 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 2DH5_Ant1_2402 * Att 40 dB * RBW 3 MHz * VBW 10 MHz SWT 5 ms Marker 1 [T1 ] -3.30 dBm 2.401510000 GHz 1 A LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.402 GHz 1 MHz/ Span 10 MHz Date: 21.FEB.2024 13:43:09 Ref 10 dBm 10 Offset 1.5 dB 2DH5_Ant1_2441 * Att 40 dB * RBW 3 MHz * VBW 10 MHz SWT 5 ms Marker 1 [T1 ] -2.79 dBm 2.440460000 GHz 0 1 1 PK VIEW -10 A LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 1 MHz/ Span 10 MHz Date: 21.FEB.2024 13:43:29 Ref 10 dBm 10 Offset 1.5 dB 2DH5_Ant1_2480 * Att 40 dB * RBW 3 MHz * VBW 10 MHz SWT 5 ms Marker 1 [T1 ] -3.12 dBm 2.479610000 GHz 0 1 1 PK VIEW -10 A LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.48 GHz 1 MHz/ Span 10 MHz Date: 21.FEB.2024 13:43:43 3DH5_Ant1_2402 Page 26 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 * Att 40 dB * RBW 3 MHz * VBW 10 MHz SWT 5 ms 1 -20 -30 -40 -50 -60 -70 -80 -90 Center 2.402 GHz 1 MHz/ Marker 1 [T1 ] -2.79 dBm 2.401770000 GHz A LVL 3DB Span 10 MHz Date: 21.FEB.2024 13:44:11 Ref 10 dBm 10 Offset 1.5 dB 3DH5_Ant1_2441 * Att 40 dB * RBW 3 MHz * VBW 10 MHz SWT 5 ms Marker 1 [T1 ] -2.27 dBm 2.440580000 GHz 1 0 1 PK VIEW -10 A LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 1 MHz/ Span 10 MHz Date: 21.FEB.2024 13:44:36 Ref 10 dBm 10 Offset 1.5 dB 3DH5_Ant1_2480 * Att 40 dB * RBW 3 MHz * VBW 10 MHz SWT 5 ms Marker 1 [T1 ] -2.66 dBm 2.479600000 GHz 0 1 1 PK VIEW -10 A LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.48 GHz 1 MHz/ Span 10 MHz Date: 21.FEB.2024 13:46:54 Page 27 of 108 Guangdong Dongdian Testing Service Co., Ltd. 7. Carrier Frequency Separation 7.1. Block diagram of test setup Report No.:DDT-RE24010331-3E03 7.2. Limits 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 2400-2483.5 MHz band may have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided the systems operate with an output power no greater than 125 mW. 7.3. Test procedure (1) The test according to ANSI C63.10-2013 clause 7.8.2. (2) Connect EUT's antenna output to spectrum analyzer by RF cable, the path loss was compensated to the results. (3) Set the EUT as maximum power setting and enable the EUT transmit continuously. (4) Use the following spectrum analyzer settings for the maximum peak output power measurement: RBW: approximately 30% of the channel spacing VBW: VBW RBW. Span: Wide enough to capture the peaks of two adjacent channels. Detector Mode: Peak Sweep time: Auto Trace mode: Max hold (5) Use the marker-delta function to determine the separation between the peaks of the adjacent channels and record the results in the report. Appendix D: Carrier frequency separati on Test R es ult Page 28 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 7.4. Test result Test Engineer: Ambient Condition: Test Power Supply: Sample Number: Zoe 24.3,46.1%RH Battery S24010331-011 Test Site: Test Date: EUT: Model No.: Test Mode DH5 2DH5 3DH5 Antenna Ant1 Ant1 Ant1 Frequency [MHz] Hop Hop Hop Result [MHz] 0.997 1.003 1 RF Measurement System 2# 2024.02.21 Safe Audio Headphone Buzz junior Limit [MHz] 0.960 0.873 0.867 Verdict PASS PASS PASS Page 29 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 7.5. Test graphs Ref 10 dBm 10 Offset 1.5 dB 0 1 1 PK VIEW -10 DH5_Ant1_Hop * Att 40 dB * RBW 300 kHz * VBW 300 kHz SWT 2.5 ms 2 Delta 2 [T1 ] -0.01 dB 996.794871795 kHz Marker 1 [T1 ] -3.77 dBm 2.440894231 GHz A LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Start 2.4405 GHz 200 kHz/ Stop 2.4425 GHz Date: 21.FEB.2024 14:46:22 Ref 10 dBm 10 Offset 1.5 dB 0 1 1 PK VIEW -10 2DH5_Ant1_Hop * Att 40 dB * RBW 300 kHz * VBW 300 kHz SWT 2.5 ms 2 Delta 2 [T1 ] 0.03 dB 1.003205128 MHz Marker 1 [T1 ] -3.78 dBm 2.440891026 GHz A LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Start 2.4405 GHz 200 kHz/ Stop 2.4425 GHz Date: 21.FEB.2024 14:07:52 Ref 10 dBm 10 Offset 1.5 dB 0 1 1 PK VIEW -10 3DH5_Ant1_Hop * Att 40 dB * RBW 300 kHz * VBW 300 kHz SWT 2.5 ms 2 Delta 2 [T1 ] -0.02 dB 1.000000000 MHz Marker 1 [T1 ] -3.76 dBm 2.440894231 GHz A LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Start 2.4405 GHz 200 kHz/ Stop 2.4425 GHz Date: 21.FEB.2024 14:22:59 Page 30 of 108 Guangdong Dongdian Testing Service Co., Ltd. 8. Dwell Time 8.1. Block diagram of test setup Report No.:DDT-RE24010331-3E03 8.2. Limits The average time of occupancy on any channel shall not be greater than 0.4 seconds within a period of 0.4 seconds multiplied by the number of hopping channels employed. 8.3. Test procedure (1) The test according to ANSI C63.10-2013 clause 7.8.4. (2) Connect EUT's antenna output to spectrum analyzer by RF cable, the path loss was compensated to the results. (3) Set the EUT as maximum power setting and enable the EUT transmit continuously. (4) Use the following spectrum analyzer settings for the maximum peak output power measurement: RBW: channel spacing and where possible RBW should be set >>1 / T VBW: VBW RBW. Span: Zero span, centered on a hopping channel. Detector Mode: Peak Sweep time: Auto Trace mode: Clear Write. (5) The test period: T= 0.4 Second/Channel x 79 Channel = 31.6 s (6) Measure the hopping number and on time of each pulse with spectrum analyzer in zero span set, and calculate dwell time with formula Dwell time = total hops *pulse's on time. (7) Measure and record the results in the report. Appendix E: Time of occupancy Page 31 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 8.4. Test result Test Engineer: Ambient Condition: Test Power Supply: Sample Number: Zoe 24.3,46.1%RH Battery S24010331-011 Test Site: Test Date: EUT: Model No.: Test Mode DH1 DH3 DH5 2DH1 2DH3 2DH5 3DH1 3DH3 3DH5 Antenna Ant1 Ant1 Ant1 Ant1 Ant1 Ant1 Ant1 Ant1 Ant1 Frequency [MHz] Hop Hop Hop Hop Hop Hop Hop Hop Hop BurstWidth [ms] 0.360 1.610 2.865 0.360 1.620 2.880 0.370 1.620 2.880 TotalHops [Num] 316 159 103 320 154 114 320 158 111 RF Measurement System 2# 2024.02.21 Safe Audio Headphone Buzz junior Result[s] 0.114 0.256 0.295 0.115 0.249 0.328 0.118 0.256 0.32 Limit[s] 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 Verdict PASS PASS PASS PASS PASS PASS PASS PASS PASS Page 32 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 8.5. Test graphs Ref 10 dBm 10 Offset 1.5 dB 0 1 PK * CLRWR -10 2 TRG -3.4 dBm 1 DH1_Ant1_Hop * Att 20 dB RBW 1 MHz * VBW 3 MHz SWT 10 ms Delta 2 [T1 ] 6.13 dB 360.000000 µs Marker 1 [T1 ] -10.02 dBm -10.000000 µs A SGL TRG LVL -20 -30 -40 SWP 1 of 1 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 1 ms/ Date: 21.FEB.2024 14:29:17 Ref 10 dBm 10 Offset 1.5 dB * Att 20 dB 0 1 PK * CLRWR -10 TRG -5.6 dBm RBW 500 kHz * VBW 3 MHz SWT 31.6 s -20 -30 -40 SWP 1 of 1 -50 -60 -70 -80 -90 Center 2.441 GHz 3.16 s/ A SGL TRG LVL 3DB Date: 21.FEB.2024 14:30:30 Ref 10 dBm 10 Offset 1.5 dB 0 1 PK * CLRWR -10 1 TRG -3.4 dBm DH3_Ant1_Hop * Att 20 dB RBW 1 MHz * VBW 3 MHz SWT 10 ms 2 Delta 2 [T1 ] -0.57 dB 1.610000 ms Marker 1 [T1 ] -3.40 dBm 0.000000 s A SGL TRG LVL -20 -30 -40 SWP 1 of 1 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 1 ms/ Date: 21.FEB.2024 14:27:37 Page 33 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 10 dBm 10 Offset 1.5 dB 0 1 PK * CLRWR -10 TRG -5 dBm * Att 20 dB RBW 500 kHz * VBW 3 MHz SWT 31.6 s -20 -30 -40 SWP 1 of 1 -50 -60 -70 -80 -90 Center 2.441 GHz 3.16 s/ A SGL TRG LVL 3DB Date: 21.FEB.2024 14:29:01 Ref 10 dBm 10 Offset 1.5 dB 0 1 PK * CLRWR -10 1 TRG -5 dBm DH5_Ant1_Hop * Att 20 dB RBW 1 MHz * VBW 3 MHz SWT 15 ms 2 Delta 2 [T1 ] -0.49 dB 2.865000 ms Marker 1 [T1 ] -3.46 dBm -5.000000 µs A SGL TRG LVL -20 -30 -40 SWP 1 of 1 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 1.5 ms/ Date: 21.FEB.2024 14:26:09 Ref 10 dBm 10 Offset 1.5 dB * Att 20 dB 0 1 PK * CLRWR -10 TRG -5.2 dBm RBW 500 kHz * VBW 3 MHz SWT 31.6 s -20 -30 -40 SWP 1 of 1 -50 -60 -70 -80 -90 Center 2.441 GHz 3.16 s/ A SGL TRG LVL 3DB Date: 21.FEB.2024 14:26:57 2DH1_Ant1_Hop Page 34 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 10 dBm 10 Offset 1.5 dB * Att 20 dB 0 1 PK * CLRWR -10 12 TRG -3.2 dBm RBW 1 MHz * VBW 3 MHz SWT 10 ms -20 -30 -40 SWP 1 of 1 -50 -60 -70 -80 -90 Center 2.441 GHz 1 ms/ Delta 2 [T1 ] -0.97 dB 360.000000 µs Marker 1 [T1 ] -3.42 dBm -180.000000 µs A SGL TRG LVL 3DB Date: 21.FEB.2024 14:37:00 Ref 10 dBm 10 Offset 1.5 dB * Att 20 dB 0 1 PK * CLRWR -10 TRG -5.4 dBm RBW 500 kHz * VBW 3 MHz SWT 31.6 s -20 -30 -40 SWP 1 of 1 -50 -60 -70 -80 -90 Center 2.441 GHz 3.16 s/ A SGL TRG LVL 3DB Date: 21.FEB.2024 14:38:09 Ref 10 dBm 10 Offset 1.5 dB 0 1 PK * CLRWR -10 1 TRG -7.7 dBm 2DH3_Ant1_Hop * Att 20 dB RBW 1 MHz * VBW 3 MHz SWT 10 ms 2 Delta 2 [T1 ] -0.56 dB 1.620000 ms Marker 1 [T1 ] -3.48 dBm 0.000000 s A SGL TRG LVL -20 -30 -40 SWP 1 of 1 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 1 ms/ Date: 21.FEB.2024 14:35:26 Page 35 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 10 dBm 10 Offset 1.5 dB 0 1 PK * CLRWR -10 TRG -8 dBm * Att 20 dB RBW 500 kHz * VBW 3 MHz SWT 31.6 s -20 -30 -40 SWP 1 of 1 -50 -60 -70 -80 -90 Center 2.441 GHz 3.16 s/ A SGL TRG LVL 3DB Date: 21.FEB.2024 14:36:42 Ref 10 dBm 10 Offset 1.5 dB 0 1 PK * CLRWR -10 1 TRG -4.6 dBm 2DH5_Ant1_Hop * Att 20 dB RBW 1 MHz * VBW 3 MHz SWT 10 ms 2 Delta 2 [T1 ] 0.71 dB 2.880000 ms Marker 1 [T1 ] -4.32 dBm -10.000000 µs A SGL TRG LVL -20 -30 -40 SWP 1 of 1 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 1 ms/ Date: 21.FEB.2024 14:30:58 Ref 10 dBm 10 Offset 1.5 dB * Att 20 dB 0 1 PK * CLRWR -10 TRG -4.8 dBm RBW 500 kHz * VBW 3 MHz SWT 31.6 s -20 -30 -40 SWP 1 of 1 -50 -60 -70 -80 -90 Center 2.441 GHz 3.16 s/ A SGL TRG LVL 3DB Date: 21.FEB.2024 14:32:16 3DH1_Ant1_Hop Page 36 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 10 dBm 10 Offset 1.5 dB * Att 20 dB 0 1 PK * CLRWR -10 12 TRG -2.9 dBm RBW 1 MHz * VBW 3 MHz SWT 10 ms -20 -30 -40 SWP 1 of 1 -50 -60 -70 -80 -90 Center 2.441 GHz 1 ms/ Delta 2 [T1 ] -0.23 dB 370.000000 µs Marker 1 [T1 ] -3.41 dBm -210.000000 µs A SGL TRG LVL 3DB Date: 21.FEB.2024 14:43:36 Ref 10 dBm 10 Offset 1.5 dB * Att 20 dB 0 1 PK * CLRWR -10 TRG -4.9 dBm RBW 500 kHz * VBW 3 MHz SWT 31.6 s -20 -30 -40 SWP 1 of 1 -50 -60 -70 -80 -90 Center 2.441 GHz 3.16 s/ A SGL TRG LVL 3DB Date: 21.FEB.2024 14:44:48 Ref 10 dBm 10 Offset 1.5 dB 0 1 PK * CLRWR -10 1 TRG -5.1 dBm 3DH3_Ant1_Hop * Att 20 dB RBW 1 MHz * VBW 3 MHz SWT 10 ms 2 Delta 2 [T1 ] -0.10 dB 1.620000 ms Marker 1 [T1 ] -3.49 dBm 0.000000 s A SGL TRG LVL -20 -30 -40 SWP 1 of 1 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 1 ms/ Date: 21.FEB.2024 14:40:56 Page 37 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 10 dBm 10 Offset 1.5 dB * Att 20 dB 0 1 PK * CLRWR -10 TRG -5.3 dBm RBW 500 kHz * VBW 3 MHz SWT 31.6 s -20 -30 -40 SWP 1 of 1 -50 -60 -70 -80 -90 Center 2.441 GHz 3.16 s/ A SGL TRG LVL 3DB Date: 21.FEB.2024 14:42:08 Ref 10 dBm 10 Offset 1.5 dB 0 1 PK * CLRWR -10 TRG -5.1 dBm 1 -20 3DH5_Ant1_Hop * Att 20 dB RBW 1 MHz * VBW 3 MHz SWT 10 ms 2 Delta 2 [T1 ] 17.71 dB 2.880000 ms Marker 1 [T1 ] -21.14 dBm -10.000000 µs A SGL TRG LVL -30 -40 SWP 1 of 1 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 1 ms/ Date: 21.FEB.2024 14:38:31 Ref 10 dBm 10 Offset 1.5 dB * Att 20 dB 0 1 PK * CLRWR -10 TRG -5.1 dBm RBW 500 kHz * VBW 3 MHz SWT 31.6 s -20 -30 -40 SWP 1 of 1 -50 -60 -70 -80 -90 Center 2.441 GHz 3.16 s/ A SGL TRG LVL 3DB Date: 21.FEB.2024 14:39:45 Page 38 of 108 Guangdong Dongdian Testing Service Co., Ltd. 9. Number of Hopping Channel 9.1. Block diagram of test setup Report No.:DDT-RE24010331-3E03 9.2. Limits Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. 9.3. Test procedure (1) The test according to ANSI C63.10-2013 clause 7.8.3. (2) Connect EUT's antenna output to spectrum analyzer by RF cable, the path loss was compensated to the results. (3) Set the EUT as maximum power setting and enable the EUT transmit continuously. (4) Use the following spectrum analyzer settings for the maximum peak output power measurement: RBW: RBW to less than 30% of the channel spacing or the 20 dB bandwidth, whichever is smaller. VBW: VBW RBW. Span: The frequency band of operation Detector Mode: Peak Sweep time: Auto Trace mode: Max hold (5) Measure the hopping number and record the results in the report. (6) Measure and record the results in the report. (1) Appendix F: \ (2) Number of hopping c hannels Page 39 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 9.4. Test result Test Engineer: Ambient Condition: Test Power Supply: Sample Number: Zoe 24.3,46.1%RH Battery S24010331-011 Test Site: Test Date: EUT: Model No.: Test Mode DH5 2DH5 3DH5 Antenna Ant1 Ant1 Ant1 Frequency [MHz] Hop Hop Hop Result [Num] 79 79 79 RF Measurement System 2# 2024.02.21 Safe Audio Headphone Buzz junior Limit [Num] 15 15 15 Verdict PASS PASS PASS Page 40 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 9.5. Test graphs Ref 10 dBm 10 Offset 1.5 dB 1 PK VIEW 0 -10 DH5_Ant1_Hop * Att 40 dB * RBW 300 kHz * VBW 300 kHz SWT 2.5 ms -20 -30 -40 -50 -60 -70 -80 -90 Start 2.4 GHz 8.35 MHz/ A LVL 3DB Stop 2.4835 GHz Date: 21.FEB.2024 14:05:06 Ref 10 dBm 10 Offset 1.5 dB 2DH5_Ant1_Hop * Att 40 dB * RBW 300 kHz * VBW 300 kHz SWT 2.5 ms 1 PK VIEW 0 -10 A LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Start 2.4 GHz 8.35 MHz/ Stop 2.4835 GHz Date: 21.FEB.2024 14:12:46 Ref 10 dBm 10 Offset 1.5 dB 3DH5_Ant1_Hop * Att 40 dB * RBW 300 kHz * VBW 300 kHz SWT 2.5 ms 1 PK VIEW 0 -10 A LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Start 2.4 GHz 8.35 MHz/ Stop 2.4835 GHz Date: 21.FEB.2024 14:24:01 Page 41 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 10. Band Edge Compliance (Conducted Method) 10.1. Block diagram of test setup 10.2. Limit All restriction band should comply with 15.209, other emission should be at least 20dB below the fundamental. 10.3. Test procedure (1) Connect EUT's antenna output to spectrum analyzer by RF cable. (2) Establish a reference level by using the following procedure: RBW: 100 kHz VBW: 300 kHz Span Encompass frequency range to be measured Detector Mode: Peak Sweep time: Auto Trace mode Max hold (3) Allow the trace to stabilize, use the peak marker function to determine the maximum peak power level to establish the reference level. (4) Then mark the maximum amplitude of all unwanted emissions outside of the authorized frequency band.Appendix G: Band edge measurements Page 42 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 10.4. Test result Test Engineer: Ambient Condition: Test Power Supply: Sample Number: Zoe 24.3,46.1%RH Battery S24010331-011 Test Site: Test Date: EUT: Model No.: Mode GFSK /4-DQPSK 8DPSK Freq. (MHz) Hopping off 2402 Hopping off 2480 Hopping on Hopping off 2402 Hopping off 2480 Hopping on Hopping off 2402 Hopping off 2480 Hopping on RF Measurement System 2# 2024.02.21 Safe Audio Headphone Buzz junior Verdict Pass Pass Pass Pass Pass Pass Pass Pass Pass Page 43 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 10.5. Test graphs Ref 20 dBm 20 Offset 1.5 dB 10 1 PK VIEW 0 -10 DH5_Ant1_Low_2402 * Att 30 dB * RBW 100 kHz * VBW 300 kHz SWT 10 ms Marker 4 [T1 ] -37.87 dBm 2.399102564 GHz Marker 1 [T1 ] -4.39 dBm 2.401987179 GHz A Marker 2 [T1 ] -54.44 dBm 2.400000000 GHz 1 LVL Marker 3 [T1 ] -54.76 dBm 2.390000000 GHz -20 -30 D1 -24.39 dBm -40 4 3DB -50 -60 3 2 -70 -80 Start 2.31 GHz 10 MHz/ Stop 2.41 GHz Date: 21.FEB.2024 13:49:08 Ref 20 dBm 20 Offset 1.5 dB 10 1 PK VIEW 0 -10 DH5_Ant1_High_2480 * Att 30 dB 1 * RBW 100 kHz * VBW 300 kHz SWT 15 ms Marker 4 [T1 ] -51.73 dBm 2.483509615 GHz Marker 1 [T1 ] -4.62 dBm 2.480048077 GHz A Marker 2 [T1 ] -51.73 dBm 2.483500000 GHz LVL Marker 3 [T1 ] -55.00 dBm 2.500000000 GHz -20 -30 D1 -24.62 dBm -40 24 -50 -60 3DB 3 -70 -80 Start 2.47 GHz 3 MHz/ Stop 2.5 GHz Date: 21.FEB.2024 13:52:22 Ref 20 dBm 20 Offset 1.5 dB 10 1 PK VIEW 0 -10 DH5_Ant1_Low_Hop_2402 * Att 30 dB * RBW 100 kHz * VBW 300 kHz SWT 10 ms Marker 4 [T1 ] -39.23 dBm 2.398942308 GHz Marker 1 [T1 ] -4.31 dBm 2.410000000 GHz A Marker 2 [T1 ] -39.90 dBm 2.400000000 GHz 1 LVL Marker 3 [T1 ] -54.30 dBm 2.390000000 GHz -20 -30 D1 -24.31 dBm -40 42 3DB -50 3 -60 -70 -80 Start 2.31 GHz 10 MHz/ Stop 2.41 GHz Date: 21.FEB.2024 14:04:12 Page 44 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 20 dBm 20 Offset 1.5 dB 1 PK VIEW 10 0 1 -10 DH5_Ant1_High_Hop_2480 * Att 30 dB * RBW 100 kHz * VBW 300 kHz SWT 15 ms Marker 4 [T1 ] -51.73 dBm 2.486875000 GHz Marker 1 [T1 ] -4.67 dBm 2.471971154 GHz A Marker 2 [T1 ] -54.39 dBm 2.483500000 GHz LVL Marker 3 [T1 ] -52.81 dBm 2.500000000 GHz -20 -30 D1 -24.67 dBm -40 -50 -60 4 2 3DB 3 -70 -80 Start 2.47 GHz 3 MHz/ Stop 2.5 GHz Date: 21.FEB.2024 14:05:38 Ref 20 dBm 20 Offset 1.5 dB 10 1 PK VIEW 0 -10 2DH5_Ant1_Low_2402 * Att 30 dB * RBW 100 kHz * VBW 300 kHz SWT 10 ms Marker 4 [T1 ] -38.57 dBm 2.398942308 GHz Marker 1 [T1 ] -4.35 dBm 2.401826923 GHz A Marker 2 [T1 ] -55.82 dBm 2.400000000 1 GHz LVL Marker 3 [T1 ] -56.07 dBm 2.390000000 GHz -20 -30 D1 -24.35 dBm -40 4 3DB -50 -60 3 2 -70 -80 Start 2.31 GHz 10 MHz/ Stop 2.41 GHz Date: 21.FEB.2024 13:53:51 Ref 20 dBm 20 Offset 1.5 dB 10 1 PK VIEW 0 -10 2DH5_Ant1_High_2480 * Att 30 dB 1 * RBW 100 kHz * VBW 300 kHz SWT 15 ms Marker 4 [T1 ] -52.47 dBm 2.495865385 GHz Marker 1 [T1 ] -4.46 dBm 2.479759615 GHz A Marker 2 [T1 ] -54.38 dBm 2.483500000 GHz LVL Marker 3 [T1 ] -54.10 dBm 2.500000000 GHz -20 -30 D1 -24.46 dBm -40 -50 2 -60 3DB 4 3 -70 -80 Start 2.47 GHz 3 MHz/ Stop 2.5 GHz Date: 21.FEB.2024 13:56:32 2DH5_Ant1_Low_Hop_2402 Page 45 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 20 dBm 20 Offset 1.5 dB 10 1 PK VIEW 0 * Att 30 dB -10 -20 -30 D1 -24.3 dBm -40 -50 * RBW 100 kHz * VBW 300 kHz SWT 10 ms Marker 4 [T1 ] -38.75 dBm 2.398782051 GHz Marker 1 [T1 ] -4.30 dBm 2.402147436 GHz A Marker 2 [T1 ] -43.46 dBm 2.400000000 GHz 1 LVL Marker 3 [T1 ] -52.38 dBm 2.390000000 GHz 4 2 3 3DB -60 -70 -80 Start 2.31 GHz 10 MHz/ Stop 2.41 GHz Date: 21.FEB.2024 14:06:43 Ref 20 dBm 20 Offset 1.5 dB 10 1 PK VIEW 0 1 -10 2DH5_Ant1_High_Hop_2480 * Att 30 dB * RBW 100 kHz * VBW 300 kHz SWT 15 ms Marker 4 [T1 ] -51.40 dBm 2.491201923 GHz Marker 1 [T1 ] -4.24 dBm 2.475096154 GHz A Marker 2 [T1 ] -52.13 dBm 2.483500000 GHz LVL Marker 3 [T1 ] -54.24 dBm 2.500000000 GHz -20 -30 D1 -24.24 dBm -40 -50 2 4 -60 3DB 3 -70 -80 Start 2.47 GHz 3 MHz/ Stop 2.5 GHz Date: 21.FEB.2024 14:14:22 Ref 20 dBm 20 Offset 1.5 dB 10 1 PK VIEW 0 -10 3DH5_Ant1_Low_2402 * Att 30 dB * RBW 100 kHz * VBW 300 kHz SWT 10 ms Marker 4 [T1 ] -39.72 dBm 2.398942308 GHz Marker 1 [T1 ] -4.32 dBm 2.401826923 GHz A Marker 2 [T1 ] -51.22 dBm 2.400000000 GHz 1 LVL Marker 3 [T1 ] -54.49 dBm 2.390000000 GHz -20 -30 D1 -24.32 dBm -40 -50 -60 4 2 3 3DB -70 -80 Start 2.31 GHz 10 MHz/ Stop 2.41 GHz Date: 21.FEB.2024 13:58:04 3DH5_Ant1_High_2480 Page 46 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 20 dBm 20 Offset 1.5 dB 10 1 PK VIEW 0 * Att 30 dB 1 -10 * RBW 100 kHz * VBW 300 kHz SWT 15 ms Marker 4 [T1 ] -52.02 dBm 2.496298077 GHz Marker 1 [T1 ] -4.81 dBm 2.480096154 GHz A Marker 2 [T1 ] -54.04 dBm 2.483500000 GHz LVL Marker 3 [T1 ] -54.85 dBm 2.500000000 GHz -20 -30 D1 -24.81 dBm -40 -50 2 -60 3DB 4 3 -70 -80 Start 2.47 GHz 3 MHz/ Stop 2.5 GHz Date: 21.FEB.2024 14:01:21 Ref 20 dBm 20 Offset 1.5 dB 10 1 PK VIEW 0 -10 3DH5_Ant1_Low_Hop_2402 * Att 30 dB * RBW 100 kHz * VBW 300 kHz SWT 10 ms Marker 4 [T1 ] -38.79 dBm 2.399102564 GHz Marker 1 [T1 ] -4.17 dBm 2.409839744 GHz A Marker 2 [T1 ] -38.84 dBm 2.400000000 GHz 1 LVL Marker 3 [T1 ] -52.71 dBm 2.390000000 GHz -20 -30 D1 -24.17 dBm -40 -50 42 3 3DB -60 -70 -80 Start 2.31 GHz 10 MHz/ Stop 2.41 GHz Date: 21.FEB.2024 14:22:24 Ref 20 dBm 20 Offset 1.5 dB 10 1 PK VIEW 0 1 -10 3DH5_Ant1_High_Hop_2480 * Att 30 dB * RBW 100 kHz * VBW 300 kHz SWT 15 ms Marker 4 [T1 ] -51.73 dBm 2.485625000 GHz Marker 1 [T1 ] -4.61 dBm 2.472788462 GHz A Marker 2 [T1 ] -53.53 dBm 2.483500000 GHz Marker 3 [T1 ] LVL -54.70 dBm 2.500000000 GHz -20 -30 D1 -24.61 dBm -40 -50 -60 4 2 3DB 3 -70 -80 Start 2.47 GHz 3 MHz/ Stop 2.5 GHz Date: 21.FEB.2024 14:24:53 Page 47 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 11. RF Conducted Spurious Emissions 11.1. Block diagram of test setup 11.2. Limits In any 100 kHz bandwidth outside the frequency bands in which the spread spectrum intentional radiator in 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. 11.3. Test procedure (1) Connect EUT's antenna output to spectrum analyzer by RF cable. (2) Establish a reference level by using the following procedure: Center frequency Test frequency RBW: 100 kHz VBW: 300 kHz Span Wide enough to capture the peak level of the inband emission Detector Mode: Peak Sweep time: Auto Trace mode Max hold (3) Allow the trace to stabilize, use the peak marker function to determine the maximum peak power level to establish the reference level. (4) Set the spectrum analyzer as follows: RBW: 100 kHz VBW: 300 kHz Span Encompass frequency range to be measured Number of measurement points Span/RBW Detector Mode: Peak Sweep time: Auto Trace mode Max hold Allow the trace to stabilize, use the peak marker function to determine the maximum amplitude of all unwanted emissions outside of the authorized frequency band Appendix H: Conducted Spurious Emission Page 48 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 11.4. Test result Test Engineer: Ambient Condition: Test Power Supply: Sample Number: Zoe 24.3,46.1%RH Battery S24010331-011 Test Site: Test Date: EUT: Model No.: Mode GFSK /4-DQPSK 8DPSK Freq. (MHz) Hopping off 2402 Hopping off 2441 Hopping off 2480 Hopping off 2402 Hopping off 2441 Hopping off 2480 Hopping off 2402 Hopping off 2441 Hopping off 2480 RF Measurement System 2# 2024.02.21 Safe Audio Headphone Buzz junior Verdict Pass Pass Pass Pass Pass Pass Pass Pass Pass Page 49 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 11.5. Test graphs DH5_Ant1_2402_0~Reference Ref 30 dBm * Att 30 dB * RBW 100 kHz * VBW 300 kHz SWT 2.5 ms Marker 1 [T1 ] -4.38 dBm 2.401766827 GHz 30 Offset 1.5 dB 20 1 PK VIEW 10 A LVL 0 1 -10 -20 -30 3DB -40 -50 -60 -70 Center 2.402 GHz 150 kHz/ Span 1.5 MHz Date: 21.FEB.2024 13:49:17 Ref 20 dBm 20 Offset 1.5 dB DH5_Ant1_2402_30~1000 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 125 ms Marker 1 [T1 ] -40.99 dBm 95.992333333 MHz 10 1 PK VIEW 0 A LVL -10 -20 -30 D1 -24.38 dBm 1 -40 3DB -50 -60 -70 -80 Start 30 MHz 97 MHz/ Stop 1 GHz Date: 21.FEB.2024 13:49:24 DH5_Ant1_2402_1000~26500 Ref 20 dBm 20 Offset 1.5 dB 10 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 2.6 s Marker 2 [T1 ] -48.20 dBm 9.602000000 GHz Marker 1 [T1 ] -4.94 dBm 2.401650000 GHz A 1 PK VIEW 0 1 LVL -10 -20 -30 D1 -24.38 dBm -40 2 -50 3DB -60 -70 -80 Start 1 GHz 2.55 GHz/ Stop 26.5 GHz Date: 21.FEB.2024 13:49:46 Page 50 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 DH5_Ant1_2441_0~Reference Ref 30 dBm * Att 30 dB * RBW 100 kHz * VBW 300 kHz SWT 2.5 ms Marker 1 [T1 ] -3.90 dBm 2.440757212 GHz 30 Offset 1.5 dB 20 1 PK VIEW 10 A LVL 0 1 -10 -20 -30 3DB -40 -50 -60 -70 Center 2.441 GHz 150 kHz/ Span 1.5 MHz Date: 21.FEB.2024 13:50:35 Ref 20 dBm 20 Offset 1.5 dB DH5_Ant1_2441_30~1000 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 125 ms Marker 1 [T1 ] -40.84 dBm 95.992333333 MHz 10 1 PK VIEW 0 A LVL -10 -20 -30 D1 -23.9 dBm 1 -40 3DB -50 -60 -70 -80 Start 30 MHz 97 MHz/ Stop 1 GHz Date: 21.FEB.2024 13:50:42 DH5_Ant1_2441_1000~26500 Ref 20 dBm 20 Offset 1.5 dB 10 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 2.6 s Marker 2 [T1 ] -49.00 dBm 4.881100000 GHz Marker 1 [T1 ] -4.30 dBm 2.440750000 GHz A 1 PK VIEW 01 LVL -10 -20 -30 D1 -23.9 dBm -40 2 -50 3DB -60 -70 -80 Start 1 GHz 2.55 GHz/ Stop 26.5 GHz Date: 21.FEB.2024 13:51:05 DH5_Ant1_2480_0~Reference Page 51 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 30 dBm 30 Offset 1.5 dB 20 1 PK VIEW 10 * Att 30 dB 0 1 -10 * RBW 100 kHz * VBW 300 kHz SWT 2.5 ms Marker 1 [T1 ] -4.35 dBm 2.479762019 GHz A LVL -20 -30 3DB -40 -50 -60 -70 Center 2.48 GHz 150 kHz/ Span 1.5 MHz Date: 21.FEB.2024 13:52:31 Ref 20 dBm 20 Offset 1.5 dB DH5_Ant1_2480_30~1000 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 125 ms Marker 1 [T1 ] -56.38 dBm 279.969000000 MHz 10 1 PK VIEW 0 A LVL -10 -20 -30 D1 -24.35 dBm -40 3DB -50 1 -60 -70 -80 Start 30 MHz 97 MHz/ Stop 1 GHz Date: 21.FEB.2024 13:52:38 DH5_Ant1_2480_1000~26500 Ref 20 dBm 20 Offset 1.5 dB 10 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 2.6 s Marker 2 [T1 ] -48.87 dBm 4.960150000 GHz Marker 1 [T1 ] -4.70 dBm 2.479850000 GHz A 1 PK VIEW 0 1 LVL -10 -20 -30 D1 -24.35 dBm -40 2 -50 3DB -60 -70 -80 Start 1 GHz 2.55 GHz/ Stop 26.5 GHz Date: 21.FEB.2024 13:53:00 2DH5_Ant1_2402_0~Reference Page 52 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 30 dBm 30 Offset 1.5 dB 20 1 PK VIEW 10 * Att 30 dB 0 -10 * RBW 100 kHz * VBW 300 kHz SWT 2.5 ms Marker 1 [T1 ] -4.41 dBm 2.402076923 GHz A LVL 1 -20 -30 3DB -40 -50 -60 -70 Center 2.402 GHz 150 kHz/ Span 1.5 MHz Date: 21.FEB.2024 13:53:59 Ref 20 dBm 20 Offset 1.5 dB 2DH5_Ant1_2402_30~1000 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 125 ms Marker 1 [T1 ] -44.86 dBm 95.927666667 MHz 10 1 PK VIEW 0 A LVL -10 -20 -30 D1 -24.41 dBm -40 1 -50 3DB -60 -70 -80 Start 30 MHz 97 MHz/ Stop 1 GHz Date: 21.FEB.2024 13:54:06 2DH5_Ant1_2402_1000~26500 Ref 20 dBm 20 Offset 1.5 dB 10 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 2.6 s Marker 2 [T1 ] -48.35 dBm 9.602000000 GHz Marker 1 [T1 ] -10.44 dBm 2.401650000 GHz A 1 PK VIEW 0 LVL 1 -10 -20 -30 D1 -24.41 dBm -40 2 -50 3DB -60 -70 -80 Start 1 GHz 2.55 GHz/ Stop 26.5 GHz Date: 21.FEB.2024 13:54:28 2DH5_Ant1_2441_0~Reference Page 53 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 30 dBm 30 Offset 1.5 dB 20 1 PK VIEW 10 * Att 30 dB 0 -10 * RBW 100 kHz * VBW 300 kHz SWT 2.5 ms Marker 1 [T1 ] -3.92 dBm 2.441081731 GHz A LVL 1 -20 -30 3DB -40 -50 -60 -70 Center 2.441 GHz 150 kHz/ Span 1.5 MHz Date: 21.FEB.2024 13:55:15 Ref 20 dBm 20 Offset 1.5 dB 2DH5_Ant1_2441_30~1000 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 125 ms Marker 1 [T1 ] -56.34 dBm 510.473333333 MHz 10 1 PK VIEW 0 A LVL -10 -20 -30 D1 -23.92 dBm -40 3DB -50 1 -60 -70 -80 Start 30 MHz 97 MHz/ Stop 1 GHz Date: 21.FEB.2024 13:55:22 2DH5_Ant1_2441_1000~26500 Ref 20 dBm 20 Offset 1.5 dB 1 PK VIEW 10 0 1 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 2.6 s Marker 2 [T1 ] -50.02 dBm 9.757550000 GHz Marker 1 [T1 ] -7.85 dBm 2.440750000 GHz A LVL -10 -20 -30 D1 -23.92 dBm -40 2 -50 3DB -60 -70 -80 Start 1 GHz 2.55 GHz/ Stop 26.5 GHz Date: 21.FEB.2024 13:55:44 2DH5_Ant1_2480_0~Reference Page 54 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 30 dBm 30 Offset 1.5 dB 20 1 PK VIEW 10 * Att 30 dB 0 -10 * RBW 100 kHz * VBW 300 kHz SWT 2.5 ms Marker 1 [T1 ] -4.38 dBm 2.480074519 GHz A LVL 1 -20 -30 3DB -40 -50 -60 -70 Center 2.48 GHz 150 kHz/ Span 1.5 MHz Date: 21.FEB.2024 13:56:40 Ref 20 dBm 20 Offset 1.5 dB 2DH5_Ant1_2480_30~1000 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 125 ms Marker 1 [T1 ] -56.02 dBm 95.992333333 MHz 10 1 PK VIEW 0 A LVL -10 -20 -30 D1 -24.38 dBm -40 3DB -50 1 -60 -70 -80 Start 30 MHz 97 MHz/ Stop 1 GHz Date: 21.FEB.2024 13:56:47 2DH5_Ant1_2480_1000~26500 Ref 20 dBm 20 Offset 1.5 dB 10 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 2.6 s Marker 2 [T1 ] -49.13 dBm 9.913950000 GHz Marker 1 [T1 ] -8.51 dBm 2.479850000 GHz A 1 PK VIEW 0 1 LVL -10 -20 -30 D1 -24.38 dBm -40 2 -50 3DB -60 -70 -80 Start 1 GHz 2.55 GHz/ Stop 26.5 GHz Date: 21.FEB.2024 13:57:10 3DH5_Ant1_2402_0~Reference Page 55 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 30 dBm 30 Offset 1.5 dB 20 1 PK VIEW 10 * Att 30 dB 0 1 -10 * RBW 100 kHz * VBW 300 kHz SWT 2.5 ms Marker 1 [T1 ] -4.36 dBm 2.401764423 GHz A LVL -20 -30 3DB -40 -50 -60 -70 Center 2.402 GHz 150 kHz/ Span 1.5 MHz Date: 21.FEB.2024 13:58:12 Ref 20 dBm 20 Offset 1.5 dB 3DH5_Ant1_2402_30~1000 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 125 ms Marker 1 [T1 ] -40.50 dBm 95.992333333 MHz 10 1 PK VIEW 0 A LVL -10 -20 -30 D1 -24.36 dBm 1 -40 3DB -50 -60 -70 -80 Start 30 MHz 97 MHz/ Stop 1 GHz Date: 21.FEB.2024 13:58:19 3DH5_Ant1_2402_1000~26500 Ref 20 dBm 20 Offset 1.5 dB 10 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 2.6 s Marker 2 [T1 ] -47.36 dBm 9.602000000 GHz Marker 1 [T1 ] -7.35 dBm 2.401650000 GHz A 1 PK VIEW 0 1 LVL -10 -20 -30 D1 -24.36 dBm -40 2 -50 3DB -60 -70 -80 Start 1 GHz 2.55 GHz/ Stop 26.5 GHz Date: 21.FEB.2024 13:58:41 3DH5_Ant1_2441_0~Reference Page 56 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 30 dBm 30 Offset 1.5 dB 20 1 PK VIEW 10 * Att 30 dB 0 1 -10 * RBW 100 kHz * VBW 300 kHz SWT 2.5 ms Marker 1 [T1 ] -3.88 dBm 2.440759615 GHz A LVL -20 -30 3DB -40 -50 -60 -70 Center 2.441 GHz 150 kHz/ Span 1.5 MHz Date: 21.FEB.2024 13:59:30 Ref 20 dBm 20 Offset 1.5 dB 3DH5_Ant1_2441_30~1000 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 125 ms Marker 1 [T1 ] -41.16 dBm 95.960000000 MHz 10 1 PK VIEW 0 A LVL -10 -20 -30 D1 -23.88 dBm 1 -40 3DB -50 -60 -70 -80 Start 30 MHz 97 MHz/ Stop 1 GHz Date: 21.FEB.2024 13:59:37 3DH5_Ant1_2441_1000~26500 Ref 20 dBm 20 Offset 1.5 dB 10 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 2.6 s Marker 2 [T1 ] -49.27 dBm 9.757550000 GHz Marker 1 [T1 ] -7.97 dBm 2.439900000 GHz A 1 PK VIEW 0 1 LVL -10 -20 -30 D1 -23.88 dBm -40 2 -50 3DB -60 -70 -80 Start 1 GHz 2.55 GHz/ Stop 26.5 GHz Date: 21.FEB.2024 13:59:59 3DH5_Ant1_2480_0~Reference Page 57 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 30 dBm 30 Offset 1.5 dB 20 1 PK VIEW 10 * Att 30 dB 0 1 -10 * RBW 100 kHz * VBW 300 kHz SWT 2.5 ms Marker 1 [T1 ] -4.31 dBm 2.479759615 GHz A LVL -20 -30 3DB -40 -50 -60 -70 Center 2.48 GHz 150 kHz/ Span 1.5 MHz Date: 21.FEB.2024 14:01:30 Ref 20 dBm 20 Offset 1.5 dB 3DH5_Ant1_2480_30~1000 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 125 ms Marker 1 [T1 ] -40.81 dBm 95.960000000 MHz 10 1 PK VIEW 0 A LVL -10 -20 -30 D1 -24.31 dBm 1 -40 3DB -50 -60 -70 -80 Start 30 MHz 97 MHz/ Stop 1 GHz Date: 21.FEB.2024 14:01:37 3DH5_Ant1_2480_1000~26500 Ref 20 dBm 20 Offset 1.5 dB 10 * Att 20 dB * RBW 100 kHz * VBW 300 kHz SWT 2.6 s Marker 2 [T1 ] -49.99 dBm 9.913950000 GHz Marker 1 [T1 ] -8.20 dBm 2.479000000 GHz A 1 PK VIEW 0 1 LVL -10 -20 -30 D1 -24.31 dBm -40 2 -50 3DB -60 -70 -80 Start 1 GHz 2.55 GHz/ Stop 26.5 GHz Date: 21.FEB.2024 14:01:59 Page 58 of 108 Guangdong Dongdian Testing Service Co., Ltd. 12. Duty cycle 12.1. Block diagram of test setup Report No.:DDT-RE24010331-3E03 12.2. Limit Just for Report. 12.3. Test procedure (1) Connected the EUT's antenna port to the Spectrum Analyzer by suitable attenuator, The cable loss and attenuator loss have been put into spectrum analyzer as amplitude offset. set the Spectrum Analyzer as below: Centre Frequency: The centre frequency of the middle hopping channel. Resolution BW: 10 MHz. Video BW: 10 MHz. Span: Zero span. Detector: Peak. Trace Mode: Clear Write. Sweep: Video Trigger (2) When the trace is complete, measure the sending time of 1 burst and the duty cycle of 1 burst cycle. (3) Calculate dwell time follow below formula: Duty cycle= Pulse's on time / Burst cycleAppendix I: Duty Cycle Page 59 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 12.4. Test result Test Engineer: Ambient Condition: Test Power Supply: Sample Number: Zoe 24.3,46.1%RH Battery S24010331-011 Test Mode DH5 2DH5 3DH5 Antenna Ant1 Ant1 Ant1 Frequency [MHz] 2402 2441 2480 2402 2441 2480 2402 2441 2480 Test Site: Test Date: EUT: Model No.: RF Measurement System 2# 2024.02.21 Safe Audio Headphone Buzz junior ON Time [ms] 2.89 2.89 2.89 2.89 2.89 2.89 2.90 2.90 2.90 Period [ms] 3.76 3.77 3.76 3.76 3.76 3.76 3.76 3.76 3.76 Duty Cycle [%] 76.86 76.66 76.86 76.86 76.86 76.86 77.13 77.13 77.13 Duty Cycle Factor[dB] 1.14 1.15 1.14 1.14 1.14 1.14 1.13 1.13 1.13 Page 60 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 12.5. Test graphs Ref 10 dBm 10 Offset 1.5 dB 0 1 PK * CLRWR -10 TRG -9.8 dBm DH5_Ant1_2402 * Att 20 dB RBW 10 MHz * VBW 10 MHz SWT 10 ms 1 Delta 2 [T1 ] 0.00 dB 3.760000 ms Marker 1 [T1 ] -3.86 dBm 3.770000 ms 2 Delta 1 [T1 ] A SGL 1 -6.46 dB 2.890000 ms TRG LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.402 GHz 1 ms/ Date: 21.FEB.2024 13:48:44 Ref 10 dBm 10 Offset 1.5 dB 0 1 PK * CLRWR -10 TRG -9.3 dBm DH5_Ant1_2441 * Att 20 dB RBW 10 MHz * VBW 10 MHz SWT 10 ms 1 Delta 2 [T1 ] 0.02 dB 3.770000 ms Marker 1 [T1 ] -3.37 dBm 3.760000 1 2ms Delta 1 [T1 ] A SGL -0.53 dB 2.890000 ms TRG LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 1 ms/ Date: 21.FEB.2024 13:50:13 Ref 10 dBm 10 Offset 1.5 dB 0 1 PK * CLRWR -10 1 TRG -9.6 dBm DH5_Ant1_2480 * Att 20 dB RBW 10 MHz * VBW 10 MHz SWT 10 ms 1 2 Delta 2 [T1 ] -0.72 dB 3.760000 ms Marker 1 [T1 ] -3.65 dBm 0.000000 s Delta 1 [T1 ] A SGL -0.53 dB 2.890000 ms TRG LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.48 GHz 1 ms/ Date: 21.FEB.2024 13:51:58 Page 61 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 10 dBm 10 Offset 1.5 dB 01 1 PK * CLRWR -10 TRG -9.2 dBm 2DH5_Ant1_2402 * Att 20 dB RBW 10 MHz * VBW 10 MHz SWT 10 ms 1 2 Delta 2 [T1 ] 0.00 dB 3.760000 ms Marker 1 [T1 ] -3.87 dBm -1.380000 ms A Delta 1 [T1 ] SGL 0.23 dB 2.890000 ms TRG LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.402 GHz 1 ms/ Date: 21.FEB.2024 13:53:26 Ref 10 dBm 10 Offset 1.5 dB 0 1 PK * CLRWR -10 TRG -8.7 dBm 2DH5_Ant1_2441 * Att 20 dB 1 RBW 10 MHz * VBW 10 MHz SWT 10 ms 1 2 Delta 2 [T1 ] 0.00 dB 3.760000 ms Marker 1 [T1 ] -3.37 dBm 1.170000 ms A Delta 1 [T1 ] SGL 0.18 dB 2.890000 ms TRG LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 1 ms/ Date: 21.FEB.2024 13:54:52 Ref 10 dBm 10 Offset 1.5 dB 0 1 PK * CLRWR -10 TRG -9 dBm 2DH5_Ant1_2480 * Att 20 dB 1 RBW 10 MHz * VBW 10 MHz SWT 10 ms 1 2 Delta 2 [T1 ] -0.02 dB 3.760000 ms Marker 1 [T1 ] -3.65 dBm 1.010000 ms A Delta 1 [T1 ] SGL 0.11 dB 2.890000 ms TRG LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.48 GHz 1 ms/ Date: 21.FEB.2024 13:56:07 3DH5_Ant1_2402 Page 62 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 Ref 10 dBm 10 Offset 1.5 dB * Att 20 dB 0 1 1 PK * CLRWR -10 TRG -8.8 dBm -20 RBW 10 MHz * VBW 10 MHz SWT 10 ms 1 Delta 2 [T1 ] -4.79 dB 3.760000 ms Marker 1 [T1 ] -3.83 dBm 1.900000 ms A Delta 1 [T1 ] 2 -1.73 dB 2.900000 ms SGL TRG LVL -30 -40 -50 3DB -60 -70 -80 -90 Center 2.402 GHz 1 ms/ Date: 21.FEB.2024 13:57:39 Ref 10 dBm 10 Offset 1.5 dB 0 1 PK * CLRWR -10 1 TRG -8.3 dBm 3DH5_Ant1_2441 * Att 20 dB RBW 10 MHz * VBW 10 MHz SWT 10 ms 2 1 Delta 2 [T1 ] -0.02 dB 3.760000 ms Marker 1 [T1 ] -3.34 dBm 0.000000 s A Delta 1 [T1 ] SGL -1.72 dB 2.900000 ms TRG LVL -20 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.441 GHz 1 ms/ Date: 21.FEB.2024 13:59:08 Ref 10 dBm 10 Offset 1.5 dB 0 1 PK * CLRWR -10 TRG -8.7 dBm 3DH5_Ant1_2480 * Att 20 dB RBW 10 MHz * VBW 10 MHz SWT 10 ms 1 Delta 2 [T1 ] 0.02 dB 3.760000 ms Marker 1 [T1 ] -3.64 dBm 3.320000 ms A 2 Delta 1 [T1 ] SGL -18.14 dB 2.900000 ms TRG LVL 1 -20 -30 -40 -50 3DB -60 -70 -80 -90 Center 2.48 GHz 1 ms/ Date: 21.FEB.2024 14:00:57 Page 63 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 13.Radiated Emission 13.1. Test equipment Equipment / Manufacturer / Model No. / 13.2. Block diagram of test setup Serial No. / Cal Due To / Page 64 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 13.3. Limits (1) FCC 15.205 Restricted frequency band MHz 0.090-0.110 10.495-0.505 2.1735-2.1905 4.125-4.128 4.1772&4.17775 4.2072&4.20775 6.215-6.218 6.26775-6.26825 6.31175-6.31225 8.291-8.294 8.362-8.366 8.37625-8.38675 8.41425-8.41475 12.29-12.293 12.51975-12.52025 12.57675-12.57725 13.36-13.41 MHz MHz 16.42-16.423 16.69475-16.69525 16.80425-16.80475 25.5-25.67 37.5-38.25 73-74.6 74.8-75.2 108-121.94 123-138 149.9-150.05 156.52475-156.52525 156.7-156.9 162.0125-167.17 167.72-173.2 240-285 322-335.4 GHz 399.9-410 608-614 960-1240 1300-1427 1435-1626.5 1645.5-1646.5 1660-1710 1718.8-1722.2 2200-2300 2310-2390 2483.5-2500 2690-2900 3260-3267 3332-3339 3345.8-3358 3600-4400 1Until February 1, 1999, this restricted band shall be 0.490-0.510 MHz 2Above 38.6 4.5-5.15 5.35-5.46 7.25-7.75 8.025-8.5 9.0-9.2 9.3-9.5 10.6-12.7 13.25-13.4 14.47-14.5 15.35-16.2 17.7-21.4 22.01-23.12 23.6-24.0 31.2-31.8 36.43-36.5 (2) Page 65 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 (2) FCC 15.209 Limit FREQUENCY MHz 0.009 ~ 0.490 0.490 ~ 1.705 1.705 ~ 30.0 30 ~ 88 88 ~ 216 216 ~ 960 960 ~ 1000 Above 1000 DISTANCE Meters 300 30 30 3 3 3 3 3 FIELD STRENGTHS LIMIT mV/m dB(mV)/m 2400/F(kHz) 67.6-20log(F) 24000/F(kHz) 87.6-20log(F) 30 29.54 100 40.0 150 43.5 200 46.0 500 54.0 74.0 dB(mV)/m (Peak) 54.0 dB(mV)/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. (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: Limit3m(dBuV/m)= Limit30m(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 . 13.4. Assistant equipment used for test Assistant equipment / Manufacturer / Model number / Description / other / 13.5. Test procedure (1) EUT was placed on a non-metallic table, 80 cm above the ground plane inside a semi-anechoic chamber for below 1G and 150 cm above the ground plane inside a fully-anechoic chamber for above 1G. (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 Page 66 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 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 30MHz, the trilog Broadband Antenna or Horn Antenna was located 3m 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 18 GHz to 25 GHz, so below final test was performed with frequency range from 9 kHz 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 equipment 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. Page 67 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 (8) For portable device, X axis, Y axis, Z axis are tested, and worse setup is reported. 13.6. Test result PASS. (See below detailed test result) Page 68 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 13.7. Test data TR-4-E-009 Radiated Emission Test Result Test Date: EUT: Test Mode: Condition: File Path: Memo: 2024-02-20 Tested By: Bairong Safe Audio Headphone Model Number: Buzz junior BT mode Power Supply: Battery Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber d:\ts\2024 report data\Q24010331-3E\FCC BELOW 1G\20240220-233520_H Sample Number:S24010331-012 Power Setting:10 Data List NO. Freq. [MHz] 1 52.57 2 119.99 3 384.01 4 611.70 5 767.71 6 863.69 Reading [dBV/m] 25.68 31.47 31.6 31.61 30.52 30.24 Antenna Factor [dB] 13.30 10.00 15.34 19.13 18.53 20.92 Cable Loss [dB] 4.74 5.17 6.61 7.38 7.91 8.21 AMP [dB] -30.68 -30.84 -30.13 -29.90 -29.90 -29.33 Result [dBV/m] 13.04 15.80 23.42 28.22 27.06 30.04 Limit [dBV/m] 40.00 43.50 46.00 46.00 46.00 46.00 Margin [dB] 26.96 27.70 22.58 17.78 18.94 15.96 Detector QP QP QP QP QP QP Polarity Horizontal Horizontal Horizontal Horizontal Horizontal Horizontal Note: 1. Result Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with QP limit, QP Result is deemed to comply with QP limit. 3. Test setup: RBW: 120 kHz, VBW: 300 kHz, Sweep time: auto. Page 69 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: EUT: Test Mode: Condition: File Path: Memo: 2024-02-20 Tested By: Bairong Safe Audio Headphone Model Number: Buzz junior BT mode Power Supply: Battery Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber d:\ts\2024 report data\Q24010331-3E\FCC BELOW 1G\20240220-233610_V Sample Number:S24010331-012 Power Setting:10 Data List NO. Freq. [MHz] 1 59.98 2 71.97 3 149.96 4 503.71 5 611.70 6 960.15 Reading [dBV/m] 31.45 35.47 29.25 27.96 29.92 24.55 Antenna Factor [dB] 12.79 9.60 8.12 16.80 19.13 22.19 Cable Loss [dB] 4.76 4.80 5.32 6.94 7.38 8.55 AMP [dB] -30.63 -30.55 -30.75 -29.90 -29.90 -28.46 Result [dBV/m] 18.37 19.32 11.94 21.80 26.53 26.83 Limit [dBV/m] 40.00 40.00 43.50 46.00 46.00 54.00 Margin [dB] 21.63 20.68 31.56 24.20 19.47 27.17 Detector QP QP QP QP QP QP Note: 1. Result Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with QP limit, QP Result is deemed to comply with QP limit. 3. Test setup: RBW: 120 kHz, VBW: 300 kHz, Sweep time: auto. Polarity Vertical Vertical Vertical Vertical Vertical Vertical Page 70 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: DH5 TX 2402MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\1 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 3694.50 2 5112.30 3 7354.60 4 11198.30 5 12123.10 6 15723.70 Reading [dBV/m] 46.18 42.88 38.94 40.99 40.64 36.93 Antenna Factor [dB] 30.38 33.40 36.79 39.20 39.30 38.45 Cable loss [dB] 5.78 8.03 7.63 9.83 10.54 14.63 AMP [dB] -40.26 -40.07 -41.59 -39.18 -39.61 -39.19 Level [dBV/m] 42.08 44.24 41.77 50.84 50.87 50.82 Limit [dBV/m] 74.00 74.00 74.00 74.00 74.00 74.00 Margin [dB] 31.92 29.76 32.23 23.16 23.13 23.18 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK PK PK PK PK Polarity Horizontal Horizontal Horizontal Horizontal Horizontal Horizontal Page 71 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: DH5 TX 2402MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\2 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 3721.70 2 4927.00 3 7458.30 4 11410.80 5 12033.00 6 16002.50 Reading [dBV/m] 45.29 42.74 38.69 39.24 40.49 37.73 Antenna Factor [dB] 30.44 33.05 36.58 39.29 39.23 38.00 Cable loss [dB] 5.79 7.72 7.64 10.02 10.54 15.87 AMP [dB] -40.28 -40.11 -41.85 -39.28 -39.57 -39.36 Level [dBV/m] 41.24 43.40 41.06 49.27 50.69 52.24 Limit [dBV/m] 74.00 74.00 74.00 74.00 74.00 74.00 Margin [dB] 32.76 30.60 32.94 24.73 23.31 21.76 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK PK PK PK PK Polarity Vertical Vertical Vertical Vertical Vertical Vertical Page 72 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: DH5 TX 2441MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\3 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 4388.10 2 5042.60 3 9476.20 4 11997.30 5 16046.70 6 17942.20 Reading [dBV/m] 44.74 42.61 38.67 40.55 38.09 37.08 Antenna Factor [dB] 31.68 33.29 38.70 39.19 37.95 42.11 Cable loss [dB] 6.63 7.93 8.83 10.54 15.70 13.06 AMP [dB] -40.31 -40.07 -38.76 -39.56 -39.40 -42.27 Level [dBV/m] 42.74 43.76 47.44 50.72 52.34 49.98 Limit [dBV/m] 74.00 74.00 74.00 74.00 74.00 74.00 Margin [dB] 31.26 30.24 26.56 23.28 21.66 24.02 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK PK PK PK PK Polarity Horizontal Horizontal Horizontal Horizontal Horizontal Horizontal Page 73 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: DH5 TX 2441MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\4 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 4009.00 2 4789.30 3 7463.40 4 11220.40 5 11973.50 6 16031.40 Reading [dBV/m] 46.13 43.65 38.73 39.72 40.08 37.47 Antenna Factor [dB] 30.92 32.46 36.57 39.20 39.12 37.97 Cable loss [dB] 5.87 7.44 7.64 9.85 10.52 15.76 AMP [dB] -40.45 -40.16 -41.86 -39.19 -39.55 -39.39 Level [dBV/m] 42.47 43.39 41.08 49.58 50.17 51.81 Limit [dBV/m] 74.00 74.00 74.00 74.00 74.00 74.00 Margin [dB] 31.53 30.61 32.92 24.42 23.83 22.19 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK PK PK PK PK Polarity Vertical Vertical Vertical Vertical Vertical Vertical Page 74 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: DH5 TX 2480MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\5 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 4083.80 2 4887.90 3 7422.60 4 12038.10 5 12577.00 6 15825.70 Reading [dBV/m] 45.03 43.55 39.20 40.54 40.62 36.78 Antenna Factor [dB] 31.07 33.19 36.65 39.24 39.40 38.25 Cable loss [dB] 6.02 7.64 7.64 10.54 10.54 15.09 AMP [dB] -40.42 -40.12 -41.76 -39.57 -39.79 -39.26 Level [dBV/m] 41.70 44.26 41.73 50.75 50.77 50.86 Limit [dBV/m] 74.00 74.00 74.00 74.00 74.00 74.00 Margin [dB] 32.30 29.74 32.27 23.25 23.23 23.14 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK PK PK PK PK Polarity Horizontal Horizontal Horizontal Horizontal Horizontal Horizontal Page 75 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: DH5 TX 2480MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\6 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 3852.60 2 4865.80 3 7453.20 4 11438.00 5 12051.70 6 15805.30 Reading [dBV/m] 45.19 42.98 39.16 39.28 39.35 36.84 Antenna Factor [dB] 30.92 33.55 36.59 39.26 39.25 38.29 Cable loss [dB] 5.82 7.60 7.64 10.04 10.54 15.00 AMP [dB] -40.36 -40.13 -41.83 -39.30 -39.58 -39.24 Level [dBV/m] 41.57 44.00 41.56 49.28 49.56 50.89 Limit [dBV/m] 74.00 74.00 74.00 74.00 74.00 74.00 Margin [dB] 32.43 30.00 32.44 24.72 24.44 23.11 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK PK PK PK PK Polarity Vertical Vertical Vertical Vertical Vertical Vertical Page 76 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: DH5 TX 2402MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\7 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2330.70 2 2390.00 Reading [dBV/m] 19.60 16.78 Antenna Factor [dB] 26.98 27.26 Cable loss [dB] 3.82 3.87 AMP [dB] 0.00 0.00 Level [dBV/m] 50.40 47.91 Limit [dBV/m] 74.00 74.00 Margin [dB] 23.60 26.09 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Horizontal Horizontal Page 77 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: DH5 TX 2402MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\8 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2371.87 2 2390.00 Reading [dBV/m] 19.54 17.12 Antenna Factor [dB] 27.19 27.26 Cable loss [dB] 3.85 3.87 AMP [dB] 0.00 0.00 Level [dBV/m] 50.58 48.25 Limit [dBV/m] 74.00 74.00 Margin [dB] 23.42 25.75 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Vertical Vertical Page 78 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: 2DH5 TX 2402MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\9 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2346.33 2 2390.00 Reading [dBV/m] 19.84 17.26 Antenna Factor [dB] 27.08 27.26 Cable loss [dB] 3.83 3.87 AMP [dB] 0.00 0.00 Level [dBV/m] 50.75 48.39 Limit [dBV/m] 74.00 74.00 Margin [dB] 23.25 25.61 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Horizontal Horizontal Page 79 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: 2DH5 TX 2402MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\10 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2389.37 2 2390.00 Reading [dBV/m] 20.17 16.56 Antenna Factor [dB] 27.26 27.26 Cable loss [dB] 3.87 3.87 AMP [dB] 0.00 0.00 Level [dBV/m] 51.30 47.69 Limit [dBV/m] 74.00 74.00 Margin [dB] 22.70 26.31 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Vertical Vertical Page 80 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: 3DH5 TX 2402MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\11 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2329.28 2 2390.00 Reading [dBV/m] 19.83 18.60 Antenna Factor [dB] 26.98 27.26 Cable loss [dB] 3.82 3.87 AMP [dB] 0.00 0.00 Level [dBV/m] 50.63 49.73 Limit [dBV/m] 74.00 74.00 Margin [dB] 23.37 24.27 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Horizontal Horizontal Page 81 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: 3DH5 TX 2402MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\12 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2342.64 2 2390.00 Reading [dBV/m] 19.89 16.93 Antenna Factor [dB] 27.06 27.26 Cable loss [dB] 3.83 3.87 AMP [dB] 0.00 0.00 Level [dBV/m] 50.78 48.06 Limit [dBV/m] 74.00 74.00 Margin [dB] 23.22 25.94 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Vertical Vertical Page 82 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: DH5 TX 2480MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\13 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2483.50 2 2490.42 Reading [dBV/m] 17.00 19.80 Antenna Factor [dB] 27.53 27.56 Cable loss [dB] 3.94 3.94 AMP [dB] 0.00 0.00 Level [dBV/m] 48.47 51.30 Limit [dBV/m] 74.00 74.00 Margin [dB] 25.53 22.70 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Horizontal Horizontal Page 83 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: DH5 TX 2480MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\14 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2483.50 2 2498.35 Reading [dBV/m] 17.43 20.99 Antenna Factor [dB] 27.53 27.59 Cable loss [dB] 3.94 3.95 AMP [dB] 0.00 0.00 Level [dBV/m] 48.90 52.53 Limit [dBV/m] 74.00 74.00 Margin [dB] 25.10 21.47 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Vertical Vertical Page 84 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: 2DH5 TX 2480MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\15 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2483.50 2 2488.54 Reading [dBV/m] 16.48 20.08 Antenna Factor [dB] 27.53 27.55 Cable loss [dB] 3.94 3.94 AMP [dB] 0.00 0.00 Level [dBV/m] 47.95 51.57 Limit [dBV/m] 74.00 74.00 Margin [dB] 26.05 22.43 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Horizontal Horizontal Page 85 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: 2DH5 TX 2480MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\16 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2483.50 2 2484.56 Reading [dBV/m] 16.47 20.12 Antenna Factor [dB] 27.53 27.54 Cable loss [dB] 3.94 3.94 AMP [dB] 0.00 0.00 Level [dBV/m] 47.94 51.60 Limit [dBV/m] 74.00 74.00 Margin [dB] 26.06 22.40 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Vertical Vertical Page 86 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: 3DH5 TX 2480MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\17 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2483.50 2 2486.20 Reading [dBV/m] 16.84 20.18 Antenna Factor [dB] 27.53 27.54 Cable loss [dB] 3.94 3.94 AMP [dB] 0.00 0.00 Level [dBV/m] 48.31 51.66 Limit [dBV/m] 74.00 74.00 Margin [dB] 25.69 22.34 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Horizontal Horizontal Page 87 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: 3DH5 TX 2480MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\18 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2483.50 2 2491.53 Reading [dBV/m] 18.46 20.81 Antenna Factor [dB] 27.53 27.57 Cable loss [dB] 3.94 3.94 AMP [dB] 0.00 0.00 Level [dBV/m] 49.93 52.32 Limit [dBV/m] 74.00 74.00 Margin [dB] 24.07 21.68 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Vertical Vertical Page 88 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 14.Band Edge Compliance 14.1. Test equipment Equipment / Manufacturer / Model No. / 14.2. Block diagram of test setup Serial No. / Cal Due To / 14.3. Limits All restriction band should comply with 15.209 and limits, other emission should be at least 20 dB below the fundamental. 14.4. Assistant equipment used for test Assistant equipment / Manufacturer / Model number / Description / other / 14.5. Test procedure Same with Radiated Emission except change investigated frequency range. Remark: All restriction band have been tested, and only the worst case is shown in report. 14.6. Test result PASS. (See below detailed test result) Page 89 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 14.7. Test data TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: DH5 TX 2402MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\7 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2330.70 2 2390.00 Reading [dBV/m] 19.60 16.78 Antenna Factor [dB] 26.98 27.26 Cable loss [dB] 3.82 3.87 AMP [dB] 0.00 0.00 Level [dBV/m] 50.40 47.91 Limit [dBV/m] 74.00 74.00 Margin [dB] 23.60 26.09 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Horizontal Horizontal Page 90 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: DH5 TX 2402MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\8 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2371.87 2 2390.00 Reading [dBV/m] 19.54 17.12 Antenna Factor [dB] 27.19 27.26 Cable loss [dB] 3.85 3.87 AMP [dB] 0.00 0.00 Level [dBV/m] 50.58 48.25 Limit [dBV/m] 74.00 74.00 Margin [dB] 23.42 25.75 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Vertical Vertical Page 91 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: 2DH5 TX 2402MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\9 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2346.33 2 2390.00 Reading [dBV/m] 19.84 17.26 Antenna Factor [dB] 27.08 27.26 Cable loss [dB] 3.83 3.87 AMP [dB] 0.00 0.00 Level [dBV/m] 50.75 48.39 Limit [dBV/m] 74.00 74.00 Margin [dB] 23.25 25.61 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Horizontal Horizontal Page 92 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: 2DH5 TX 2402MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\10 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2389.37 2 2390.00 Reading [dBV/m] 20.17 16.56 Antenna Factor [dB] 27.26 27.26 Cable loss [dB] 3.87 3.87 AMP [dB] 0.00 0.00 Level [dBV/m] 51.30 47.69 Limit [dBV/m] 74.00 74.00 Margin [dB] 22.70 26.31 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Vertical Vertical Page 93 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: 3DH5 TX 2402MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\11 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2329.28 2 2390.00 Reading [dBV/m] 19.83 18.60 Antenna Factor [dB] 26.98 27.26 Cable loss [dB] 3.82 3.87 AMP [dB] 0.00 0.00 Level [dBV/m] 50.63 49.73 Limit [dBV/m] 74.00 74.00 Margin [dB] 23.37 24.27 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Horizontal Horizontal Page 94 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: 3DH5 TX 2402MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\12 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2342.64 2 2390.00 Reading [dBV/m] 19.89 16.93 Antenna Factor [dB] 27.06 27.26 Cable loss [dB] 3.83 3.87 AMP [dB] 0.00 0.00 Level [dBV/m] 50.78 48.06 Limit [dBV/m] 74.00 74.00 Margin [dB] 23.22 25.94 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Vertical Vertical Page 95 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: DH5 TX 2480MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\13 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2483.50 2 2490.42 Reading [dBV/m] 17.00 19.80 Antenna Factor [dB] 27.53 27.56 Cable loss [dB] 3.94 3.94 AMP [dB] 0.00 0.00 Level [dBV/m] 48.47 51.30 Limit [dBV/m] 74.00 74.00 Margin [dB] 25.53 22.70 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Horizontal Horizontal Page 96 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: DH5 TX 2480MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\14 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2483.50 2 2498.35 Reading [dBV/m] 17.43 20.99 Antenna Factor [dB] 27.53 27.59 Cable loss [dB] 3.94 3.95 AMP [dB] 0.00 0.00 Level [dBV/m] 48.90 52.53 Limit [dBV/m] 74.00 74.00 Margin [dB] 25.10 21.47 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Vertical Vertical Page 97 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: 2DH5 TX 2480MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\15 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2483.50 2 2488.54 Reading [dBV/m] 16.48 20.08 Antenna Factor [dB] 27.53 27.55 Cable loss [dB] 3.94 3.94 AMP [dB] 0.00 0.00 Level [dBV/m] 47.95 51.57 Limit [dBV/m] 74.00 74.00 Margin [dB] 26.05 22.43 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Horizontal Horizontal Page 98 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: 2DH5 TX 2480MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\16 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2483.50 2 2484.56 Reading [dBV/m] 16.47 20.12 Antenna Factor [dB] 27.53 27.54 Cable loss [dB] 3.94 3.94 AMP [dB] 0.00 0.00 Level [dBV/m] 47.94 51.60 Limit [dBV/m] 74.00 74.00 Margin [dB] 26.06 22.40 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Vertical Vertical Page 99 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: 3DH5 TX 2480MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\17 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2483.50 2 2486.20 Reading [dBV/m] 16.84 20.18 Antenna Factor [dB] 27.53 27.54 Cable loss [dB] 3.94 3.94 AMP [dB] 0.00 0.00 Level [dBV/m] 48.31 51.66 Limit [dBV/m] 74.00 74.00 Margin [dB] 25.69 22.34 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Horizontal Horizontal Page 100 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-009 Radiated Emission Test Result Test Date: 2024-02-06 Tested By: Bairong EUT: Safe Audio Headphone Model Number: Buzz junior Test Mode: 3DH5 TX 2480MHz Power Supply: Battery Condition: Temp:23.4°C;Humi:62.3% Test Site: DDT 3# Chamber File Path: d:\ts\2024 report data\Q24010331-3E\FCC ABOVE 1G\18 Memo: Sample Number:S24010331-012 Power Setting:10 Test Graph Data List NO Freq. . [MHz] 1 2483.50 2 2491.53 Reading [dBV/m] 18.46 20.81 Antenna Factor [dB] 27.53 27.57 Cable loss [dB] 3.94 3.94 AMP [dB] 0.00 0.00 Level [dBV/m] 49.93 52.32 Limit [dBV/m] 74.00 74.00 Margin [dB] 24.07 21.68 Note: 1. Level = Reading + Cable loss + Antenna Factor + AMP 2. If Peak Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 1 MHz, VBW: 3 MHz, Sweep time: auto. Detector PK PK Polarity Vertical Vertical Page 101 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 15.Power Line Conducted Emissions 15.1. Test equipment Equipment Artificial mains CE Cable 1 Pulse Limiter EMI Test Receiver EMI Test Software Two Line V-Network Manufacturer R&S R&S SCHWARZBEC K R&S Audix/TW R&S Model No. ESH2-Z5 ESU8/RF2 ESH3-Z2 ESCI e3 ENV216 Serial No. DDT-ZC00538 DDT-ZC00566 DDT-ZC00539 DDT-ZC00235 DDT-ZC01252 DDT-ZC00535 Cal Due To 2024/07/11 2024/07/14 2024/07/14 2024/07/10 / 2024/07/10 15.2. Block diagram of test setup 15.3. Limits Frequency 150 kHz~500 kHz Quasi-Peak Level dB(mV) 66 ~ 56* 500 kHz~5 MHz 56 5 MHz~30 MHz 60 Note 1: * Decreasing linearly with logarithm of frequency. Note 2: The lower limit shall apply at the transition frequencies. Average Level dB(mV) 56 ~ 46* 46 50 15.4. Assistant equipment used for test Assistant equipment Adapter Manufacturer SOLUM VINA COMPANY LIMITED Model number EP-TA200 USB cable N/A N/A Description Input:100-240V 50-60Hz, 0.5A Output:9V/1.67A or 5V/2A N/A other R37N4ER2G01 SE3 N/A 15.5. Test procedure The EUT and Support equipment, if needed, were put placed on a non-metallic table, 80cm above the ground plane. Page 102 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 All support equipment power received from a second LISN. Emissions were measured on each current carrying line of the EUT using an EMI Test Receiver connected to the LISN powering the EUT. The Receiver scanned from 150 kHz to 30 MHz for emissions in each of the test modes. During the above scans, the emissions were maximized by cable manipulation. The test mode(s) described in clause 2.4 were scanned during the preliminary test. After the preliminary scan, we found the test mode producing the highest emission level. The EUT configuration and worse cable configuration of the above highest emission levels were recorded for reference of the final test. EUT and support equipment were set up on the test bench as per the configuration with highest emission level in the preliminary test. A scan was taken on both power lines, Neutral and Line, recording at least the six highest emissions. Emission frequency and amplitude were recorded into a computer in which correction factors were used to calculate the emission level and compare reading to the applicable limit. The test data of the worst-case condition(s) was recorded. The bandwidth of test receiver is set at 9 kHz. 15.6. Test result PASS. (See below detailed test result) Note1: All emissions not reported below are too low against the prescribed limits. Note2: "-----" means Peak detection; "-----" means Average detection. Note3: Pre-test AC conducted emission at both voltage AC 120V/60Hz and AC 240V/50Hz, recorded the worst case. Page 103 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 15.7. Test data TR-4-E-010 Conducted Emission Test Result Test Site Test Date EUT Power Supply Condition Memo : DDT 1# Shield Room : 2024-02-20 : Safe Audio Headphone : AC 120V/60Hz : TEMP:22.3°C, RH:56.5% : Sample Number:S24010331-012 D:\2024 CE report data\Q24010331-3E\FCC CE.EM6 Tested By : Bairong Model Number : Buzz junior Test Mode : BT mode LISN : 2023 1# ENV216/NEUTRAL Item (Mark) 1 2 3 4 5 6 7 8 9 10 11 12 Freq. (MHz) 0.15 0.15 0.62 0.62 1.05 1.05 3.70 3.70 16.75 16.75 29.68 29.68 Read Level (dBµV) 14.47 -4.11 2.96 -4.47 2.27 -8.85 -2.50 -8.30 -1.25 -8.09 -1.37 -12.47 LISN Factor (dB) 9.83 9.83 9.83 9.83 9.75 9.75 9.74 9.74 9.82 9.82 10.11 10.11 Cable Loss (dB) 0.92 0.92 0.81 0.81 0.67 0.67 0.57 0.57 0.34 0.34 0.51 0.51 Pulse Limiter Factor (dB) 9.68 9.68 9.72 9.72 9.73 9.73 9.78 9.78 9.89 9.89 9.91 9.91 Result Level (dBµV) 34.90 16.32 23.32 15.89 22.42 11.30 17.59 11.79 18.80 11.96 19.16 8.06 Limit Line (dBµV) 66.00 56.00 56.00 46.00 56.00 46.00 56.00 46.00 60.00 50.00 60.00 50.00 Over Detector Limit (dB) -31.10 -39.68 -32.68 -30.11 -33.58 -34.70 -38.41 -34.21 -41.20 -38.04 -40.84 -41.94 QP Average QP Average QP Average QP Average QP Average QP Average Note: 1. Result Level = Read Level +LISN Factor + Pulse Limiter Factor + Cable loss. 2. If QP Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 200 Hz (9 kHz--150 kHz), 9 kHz (150 kHz--30 MHz). 4. Step size: 80Hz (0.009MHz-0.15MHz), 4 kHz (0.15MHz-30MHz), Scan time: auto. Phase NEUTRAL NEUTRAL NEUTRAL NEUTRAL NEUTRAL NEUTRAL NEUTRAL NEUTRAL NEUTRAL NEUTRAL NEUTRAL NEUTRAL Page 104 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 TR-4-E-010 Conducted Emission Test Result Test Site Test Date EUT Power Supply Condition Memo Data: 4 : DDT 1# Shield Room : 2024-02-20 : Safe Audio Headphone : AC 120V/60Hz : TEMP:22.3°C, RH:56.5% : Sample Number:S24010331-012 D:\2024 CE report data\Q24010331-3E\FCC CE.EM6 Tested By : Bairong Model Number : Buzz junior Test Mode : BT mode LISN : 2023 1# ENV216/LINE Item (Mark) 1 2 3 4 5 6 7 8 9 10 11 12 Freq. (MHz) 0.15 0.15 0.63 0.63 1.07 1.07 3.74 3.74 6.70 6.70 28.60 28.60 Read Level (dBµV) 14.74 -2.32 8.01 1.69 2.73 -3.12 3.69 -4.76 -1.92 -9.83 -4.28 -12.77 LISN Factor (dB) 9.85 9.85 9.78 9.78 9.65 9.65 9.65 9.65 9.68 9.68 10.17 10.17 Cable Loss (dB) 0.92 0.92 0.81 0.81 0.67 0.67 0.57 0.57 0.46 0.46 0.53 0.53 Pulse Limiter Factor (dB) 9.68 9.68 9.72 9.72 9.73 9.73 9.78 9.78 9.80 9.80 9.91 9.91 Result Level (dBµV) 35.19 18.13 28.32 22.00 22.78 16.93 23.69 15.24 18.02 10.11 16.33 7.84 Limit Line (dBµV) 65.96 55.96 56.00 46.00 56.00 46.00 56.00 46.00 60.00 50.00 60.00 50.00 Over Detector Limit (dB) -30.77 -37.83 -27.68 -24.00 -33.22 -29.07 -32.31 -30.76 -41.98 -39.89 -43.67 -42.16 QP Average QP Average QP Average QP Average QP Average QP Average Note: 1. Result Level = Read Level +LISN Factor + Pulse Limiter Factor + Cable loss. 2. If QP Result complies with AV limit, AV Result is deemed to comply with AV limit. 3. Test setup: RBW: 200 Hz (9 kHz--150 kHz), 9 kHz (150 kHz--30 MHz). 4. Step size: 80Hz (0.009MHz-0.15MHz), 4 kHz (0.15MHz-30MHz), Scan time: auto. Phase LINE LINE LINE LINE LINE LINE LINE LINE LINE LINE LINE LINE Page 105 of 108 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE24010331-3E03 17. Photos of the EUT Please refer to DDT-Q24010331-2E appendix I -----------------------End Report---------------------- Page 108 of 108
Related FCC IDs:
- 2ACVC-BUZZJUNIOR - KREAFUNK ApS Safe Audio Headphones [-BUZZJUNIOR] 迅捷PDF编辑器 7.0.324.2 PDF-XChange Core API SDK (7.0.324.2)