Test Report_DSS 2

FCC ID: A8I-DITOO

Test Report

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FCCID_4433846

Report No.: TCT190819E003 6.10. Conducted Spurious Emission Measurement 6.10.1. Test Specification Test Requirement: FCC Part15 C Section 15.247 (d) Test Method: KDB 558074 D01 v05r02 In any 100 kHz bandwidth outside the intentional radiation frequency band, the radio frequency power shall be at least 20 dB below the highest level of the Limit: radiated power. In addition, radiated emissions which fall in the restricted bands must also comply with the radiated emission limits. Test Setup: Test Mode: Transmitting mode with modulation 1. The RF output of EUT was connected to the spectrum analyzer by RF cable and attenuator. The path loss was compensated to the results for each measurement. 2. Set to the maximum power setting and enable the EUT transmit continuously. 3. Set RBW = 100 kHz, VBW = 300kHz, scan up Test Procedure: through 10th harmonic. All harmonics / spurs must be at least 20 dB down from the highest emission level within the authorized band as measured with a 100 kHz RBW. 4. Measure and record the results in the test report. 5. The RF fundamental frequency should be excluded against the limit line in the operating frequency band. Test Result: PASS 6.10.2. Test Instruments Equipment Manufacturer Model Serial Number Calibration Due Spectrum Analyzer Agilent N9020A MY49100619 Sep. 20, 2019 RF Cable TCT RE-06 N/A Sep. 20, 2019 (9KHz-26.5GHz) Antenna Connector TCT RFC-01 N/A Sep. 20, 2019 Note: The calibration interval of the above test instruments is 12 months and the calibrations are traceable to international system unit (SI). Page 41 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 6.10.3. Test Data GFSK mode Lowest Channel Middle Channel Highest Channel Page 42 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Pi/4DQPSK mode Lowest Channel Middle Channel Highest Channel Page 43 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 8DPSK mode Lowest Channel Middle Channel Highest Channel Page 44 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 6.11. Radiated Spurious Emission Measurement 6.11.1. Test Specification Test Requirement: FCC Part15 C Section 15.209 Test Method: ANSI C63.10:2013 Frequency Range: 9 kHz to 25 GHz Measurement Distance: 3m Antenna Polarization: Horizontal & Vertical Frequency Detector RBW VBW Remark 9kHz- 150kHz Quasi-peak 200Hz 1kHz Quasi-peak Value 150kHz- Quasi-peak 9kHz 30kHz Quasi-peak Value Receiver Setup: 30MHz 30MHz-1GHz Quasi-peak 120KHz 300KHz Quasi-peak Value Peak 1MHz 3MHz Peak Value Above 1GHz Peak 1MHz 10Hz Average Value Field Strength Measurement Frequency (microvolts/meter) Distance (meters) 0.009-0.490 2400/F(KHz) 300 0.490-1.705 24000/F(KHz) 30 1.705-30 30 30 30-88 100 3 88-216 150 3 Limit: 216-960 200 3 Above 960 500 3 Measurement Field Strength Frequency Distance Detector (microvolts/meter) (meters) 500 3 Average Above 1GHz 5000 3 Peak For radiated emissions below 30MHz Test setup: 30MHz to 1GHz Page 45 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Above 1GHz Test Mode: Transmitting mode with modulation 1. The testing follows the guidelines in Spurious Radiated Emissions of ANSI C63.10:2013 Measurement Guidelines. 2. For the radiated emission test below 1GHz: The EUT was placed on a turntable with 0.8 meter above ground. The EUT was set 3 meters from the interference receiving antenna, which was mounted on the top of a variable height antenna tower. The EUT was arranged to its worst case and then tune the antenna tower (from 1 m to 4 m) and turntable (from 0 degree to 360 degrees) to find the maximum reading. A pre-amp and a high PASS filter are used Test Procedure: for the test in order to get better signal level. For the radiated emission test above 1GHz: Place the measurement antenna on a turntable with 1.5 meter above ground, which is away from each area of the EUT determined to be a source of emissions at the specified measurement distance, while keeping the measurement antenna aimed at the source of emissions at each frequency of significant emissions, with polarization oriented for maximum response. The measurement antenna may have to be higher or lower than the EUT, depending on the radiation pattern of the emission Page 46 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 and staying aimed at the emission source for receiving the maximum signal. The final measurement antenna elevation shall be that which maximizes the emissions. The measurement antenna elevation for maximum emissions shall be restricted to a range of heights of from 1 m to 4 m above the ground or reference ground plane. 3. Set to the maximum power setting and enable the EUT transmit continuously. 4. Use the following spectrum analyzer settings: (1) Span shall wide enough to fully capture the emission being measured; (2) Set RBW=120 kHz for f < 1 GHz, RBW=1MHz for f>1GHz ; VBW≥RBW; Sweep = auto; Detector function = peak; Trace = max hold for peak (3) For average measurement: use duty cycle correction factor method per 15.35(c). Duty cycle = On time/100 milliseconds On time =N1*L1+N2*L2+...+Nn-1*LNn-1+Nn*Ln Where N1 is number of type 1 pulses, L1 is length of type 1 pulses, etc. Average Emission Level = Peak Emission Level + 20*log(Duty cycle) Corrected Reading: Antenna Factor + Cable Loss + Read Level - Preamp Factor = Level Test results: PASS Page 47 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 6.11.2. Test Instruments Radiated Emission Test Site (966) Name of Serial Manufacturer Model Calibration Due Equipment Number ROHDE&SCHW Test Receiver ESIB7 100197 Sep. 17, 2019 ARZ ROHDE&SCHW Spectrum Analyzer FSQ40 200061 Sep. 20, 2019 ARZ EM Electronics Pre-amplifier Corporation EM30265 07032613 Sep. 16, 2019 CO.,LTD Pre-amplifier HP 8447D 2727A05017 Sep. 16, 2019 Loop antenna ZHINAN ZN30900A 12024 Oct. 20, 2019 Broadband Antenna Schwarzbeck VULB9163 340 Sep. 02, 2019 Horn Antenna Schwarzbeck BBHA 9120D 631 Oct. 20, 2019 Horn Antenna A-INFO LB-180400-KF J211020657 Sep. 16, 2019 Antenna Mast Keleto RE-AM N/A N/A Coax cable TCT RE-low-01 N/A Sep. 16, 2019 (9KHz-1GHz) Coax cable TCT RE-high-02 N/A Sep. 16, 2019 (9KHz-40GHz) Coax cable TCT RE-low-03 N/A Sep. 16, 2019 (9KHz-1GHz) Coax cable TCT RE-high-04 N/A Sep. 16, 2019 (9KHz-40GHz) Shurple EMI Test Software EZ-EMC N/A N/A Technology Note: The calibration interval of the above test instruments is 12 months and the calibrations are traceable to international system unit (SI). Page 48 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 6.11.3. Test Data Duty cycle correction factor for average measurement 3DH5 on time (One Pulse) Plot on Channel 00 3DH5 on time (Count Pulses) Plot on Channel 00 Note: 1. Worst case Duty cycle = on time/100 milliseconds = (2.988*26+2.300)/100=0.7999 2. Worst case Duty cycle correction factor = 20*log (Duty cycle) = -1.94dB 3. DH5 has the highest duty cycle worst case and is reported. 4. The average levels were calculated from the peak level corrected with duty cycle correction factor (-1.94dB) derived from 20log (dwell time/100ms). This correction is only for signals that hop with the fundamental signal, such as band-edge and harmonic. Other spurious signals that are independent of the hopping signal would not use this correction. Page 49 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Please refer to following diagram for individual Below 1GHz Horizontal: Page 50 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Vertical: Note: 1.The low frequency, which started from 9KHz~30MHz, was pre-scanned and the result which was 20dB lower than the limit line per 15.31(o) was not reported 2. Measurements were conducted in all three channels (high, middle, low) and three modulation (GFSK, Pi/4 DQPSK, 8DPSK) and the worst case Mode (highest channel and 8DPSK) was submitted only. Page 51 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Test Result of Radiated Spurious at Band edges Lowest channel 2402: Horizontal: Vertical: Frequency Ant. Peak Dutycycle AV Peak limit AV limit PK AVG (MHz) Pol. factor Margin Margin H/V (dBµV/m) (dB/m) (dBµV/m) (dBµV/m) (dBµV/m) (dB) (dB) 2400 H 50.80 -1.94 48.86 74 54 -23.20 -5.14 2400 V 50.69 -1.94 48.75 74 54 -23.31 -5.25 Page 52 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Highest channel 2480: Horizontal: Vertical: Frequency Ant. Peak Dutycycle AV Peak AV limit PK AVG (MHz) Pol. factor limit Margin Margin H/V (dBµV/m) (dB/m) (dBµV/m) (dBµV/m) (dBµV/m) (dB) (dB) 2483.5 H 48.85 -1.94 46.91 74 54 -25.15 -7.09 2483.5 V 47.19 -1.94 45.25 74 54 -26.81 -8.75 Note: Measurements were conducted in all three modulation (GFSK, Pi/4 DQPSK, 8DPSK), and the worst case Mode (8DPSK) was submitted only. Page 53 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Above 1GHz Modulation Type: GFSK Low channel: 2402 MHz Frequency Ant. Pol. Peak AV Correction Emission Level Peak limit AV limit Margin (MHz) H/V reading reading Factor Peak AV (dBµV) (dBuV) (dB/m) (dBµV/m) (dBµV/m) (dBµV/m) (dBµV/m) (dB) 4804 H 45.55 --- 0.66 46.21 --- 74 54 -7.79 7206 H 36.90 --- 9.5 46.4 --- 74 54 -7.60 --- H --- --- --- --- --- --- --- --- 4804 V 44.60 --- 0.66 45.26 --- 74 54 -8.74 7206 V 37.51 --- 9.5 47.01 --- 74 54 -6.99 --- V --- --- --- --- --- --- --- --- Middle channel: 2441 MHz Frequency Ant. Pol. Peak AV Correction Emission Level Peak limit AV limit Margin (MHz) H/V reading reading Factor Peak AV (dBµV) (dBµV) (dB/m) (dBµV/m) (dBµV/m) (dBµV/m) (dBµV/m) (dB) 4882 H 47.34 --- 0.99 48.33 --- 74 54 -5.67 7323 H 38.47 --- 9.87 48.34 --- 74 54 -5.66 --- H --- --- --- --- --- --- --- --- 4882 V 46.67 --- 0.99 47.66 --- 74 54 -6.34 7323 V 38.20 --- 9.87 48.07 --- 74 54 -5.93 --- V --- --- --- --- ---- --- --- --- High channel: 2480 MHz Frequency Ant. Pol. Peak AV Correction Emission Level Peak limit AV limit Margin (MHz) H/V reading reading Factor Peak AV (dBµV) (dBµV) (dB/m) (dBµV/m) (dBµV/m) (dBµV/m) (dBµV/m) (dB) 4960 H 46.03 --- 1.33 47.36 --- 74 54 -6.64 7440 H 36.12 --- 10.22 46.34 --- 74 54 -7.66 --- H --- --- --- --- --- --- --- --- 4960 V 48.20 --- 1.33 49.53 --- 74 54 -4.47 7440 V 36.17 --- 10.22 46.39 --- 74 54 -7.61 --- V --- --- --- --- --- --- --- --- Note: 1. Emission Level=Peak Reading + Correction Factor; Correction Factor= Antenna Factor + Cable loss – Pre-amplifier 2. Margin (dB) = Emission Level (Peak) (dBµV/m)-Average limit (dBµV/m) 3. The emission levels of other frequencies are very lower than the limit and not show in test report. 4. Measurements were conducted from 1 GHz to the 10th harmonic of highest fundamental frequency. 5. Data of measurement shown “---“in the above table mean that the reading of emissions is attenuated more than 20 dB below the limits or the field strength is too small to be measured. 6. Measurements were conducted in all three modulation (GFSK, Pi/4 DQPSK, 8DPSK), and the worst case Mode (8DPSK) was submitted only. 7. All the restriction bands are compliance with the limit of 15.209. Page 54 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Appendix A: Photographs of Test Setup Product: Bluetooth Speaker Model: Ditoo Radiated Emission Page 55 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Conducted Emission Page 56 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Appendix B: Photographs of EUT Product: Bluetooth Speaker Model: Ditoo External Photos Page 57 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Page 58 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Page 59 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Page 60 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Product: Bluetooth Speaker Model: Ditoo Internal Photos Page 61 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Page 62 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Page 63 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Page 64 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 Page 65 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT190819E003 *****END OF REPORT***** Page 66 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com


Document Created: 2019-09-06 09:22:49
Document Modified: 2019-09-06 09:22:49
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