Test report 2

FCC ID: 2AANZHYWKM

Test Report

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FCCID_4084283

Report No.: TCT181107E013 Pi/4DQPSK 2-DH1 2-DH3 2-DH5 Page 31 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 6.8. Pseudorandom Frequency Hopping Sequence Test Requirement: FCC Part15 C Section 15.247 (a)(1) requirement: 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. The system shall hop to channel frequencies that are selected at the system hopping rate from a Pseudorandom ordered list of hopping frequencies. Each frequency must be used equally on the average by each transmitter. The system receivers shall have input bandwidths that match the hopping channel bandwidths of their corresponding transmitters and shall shift frequencies in synchronization with the transmitted signals. EUT Pseudorandom Frequency Hopping Sequence The pseudorandom sequence may be generated in a nine-stage shift register whose 5th and 9th stage outputs are added in a modulo-two addition stage. And the result is fed back to the input of the first stage. The sequence begins with the first one of 9 consecutive ones; i.e. the shift register is initialized with nine ones. • Number of shift register stages: 9 • Length of pseudo-random sequence: 29 -1 = 511 bits • Longest sequence of zeros: 8 (non-inverted signal) An example of Pseudorandom Frequency Hopping Sequence as follow: Each frequency used equally on the average by each transmitter. The system receivers have input bandwidths that match the hopping channel bandwidths of their corresponding transmitters and shift frequencies in synchronization with the transmitted signals. Page 32 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 6.9. Conducted Band Edge Measurement 6.9.1. Test Specification Test Requirement: FCC Part15 C Section 15.247 (d) Test Method: ANSI C63.10:2013 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 testing follows the guidelines in Band-edge Compliance of RF Conducted Emissions of ANSI C63.10:2013 Measurement Guidelines. 2. Set to the maximum power setting and enable the EUT transmit continuously. 3. Set RBW = 100 kHz (≥1% span=10MHz), VBW = 300 kHz (≥RBW). Band edge emissions must be at least Test Procedure: 20 dB down from the highest emission level within the authorized band as measured with a 100kHz RBW. The attenuation shall be 30 dB instead of 20 dB when RMS conducted output power procedure is used. 4. Enable hopping function of the EUT and then repeat step 2 and 3. 5. Measure and record the results in the test report. Test Result: PASS 6.9.2. 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 33 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 6.9.3. Test Data GFSK Modulation Test channel: Lowest channel No-hopping mode Hopping mode Test channel: Highest channel No-hopping mode Hopping mode Page 34 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 Pi/4DQPSK Modulation Test channel: Lowest channel No-hopping mode Hopping mode Test channel: Highest channel No-hopping mode Hopping mode Page 35 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 6.10. Conducted Spurious Emission Measurement 6.10.1. Test Specification Test Requirement: FCC Part15 C Section 15.247 (d) Test Method: ANSI C63.10:2013 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 testing follows the guidelines in Spurious RF Conducted Emissions of ANSI C63.10:2013 Measurement Guidelines 2. The RF output of EUT was connected to the spectrum analyzer by RF cable and attenuator. The path loss was compensated to the results for each measurement. 3. Set to the maximum power setting and enable the Test Procedure: EUT transmit continuously. 4. Set RBW = 100 kHz, VBW = 300kHz, scan up 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. 5. Measure and record the results in the test report. 6. 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 36 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 6.10.3. Test Data GFSK mode Lowest Channel Middle Channel Highest Channel Pi/4DQPSK mode Lowest Channel Page 37 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 Middle Channel Highest Channel Page 38 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 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 100KHz 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 39 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 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 Test Procedure: reading. A pre-amp and a high PASS filter are used 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 40 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 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=100 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 41 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 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 Jul. 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 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 42 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 6.11.3. Test Data Duty cycle correction factor for average measurement 2DH5 on time (One Pulse) Plot on Channel 00 2DH5 on time (Count Pulses) Plot on Channel 00 Note: 1. Worst case Duty cycle = on time/100 milliseconds = (2.969*16+3.412)/100=0.5092 2. Worst case Duty cycle correction factor = 20*log (Duty cycle) = -5.86dB 3. 2DH5 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 (-5.86dB) 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 43 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 Please refer to following diagram for individual Below 1GHz Horizontal: Page 44 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 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 two modulation (GFSK, Pi/4DQPSK) and the worst case Mode (lowest channel and Pi/4DQPSK) was submitted only. Page 45 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 Above 1GHz Modulation Type: Pi/4DQPSK Low channel: 2402 MHz Peak AV Correction Emission Level Frequency Ant. Pol. reading reading Factor Peak limit AV limit Margin (MHz) H/V Peak AV (dBµV/m) (dBµV/m) (dB) (dBµV) (dBuV) (dB/m) (dBµV/m) (dBµV/m) 2390 H 47.85 --- -8.27 39.58 --- 74 54 -14.42 4804 H 44.43 --- 0.66 45.09 --- 74 54 -8.91 7206 H 36.69 --- 9.50 46.19 --- 74 54 -7.81 --- H --- --- --- --- --- --- --- --- 2390 V 44.17 --- -8.27 35.9 --- 74 54 -18.1 4804 V 45.52 --- 0.66 46.18 --- 74 54 -7.82 7206 V 35.94 --- 9.50 45.44 --- 74 54 -8.56 --- V --- --- --- --- --- --- --- --- Middle channel: 2441 MHz Frequency Ant. Pol. Peak AV Correction Emission Level Peak limit AV limit Margin reading reading Factor Peak AV (MHz) H/V (dBµV) (dBµV) (dB/m) (dBµV/m) (dBµV/m) (dBµV/m) (dBµV/m) (dB) 4882 H 44.36 --- 0.99 45.35 --- 74 54 -8.65 7323 H 38.71 --- 9.87 48.58 --- 74 54 -5.42 --- H --- --- --- --- --- --- --- --- 4882 V 43.60 --- 0.99 44.59 --- 74 54 -9.41 7323 V 39.28 --- 9.87 49.15 --- 74 54 -4.85 --- V --- --- --- --- ---- --- --- --- High channel: 2480 MHz Peak AV Correction Emission Level Frequency Ant. Pol. reading reading Factor Peak limit AV limit Margin (MHz) H/V Peak AV (dBµV/m) (dBµV/m) (dB) (dBµV) (dBµV) (dB/m) (dBµV/m) (dBµV/m) 2483.5 H 46.17 --- -7.83 38.34 --- 74 54 -15.66 4960 H 45.81 --- 1.33 47.14 --- 74 54 -6.86 7440 H 40.52 --- 10.22 50.74 --- 74 54 -3.26 --- H --- --- --- --- --- --- --- --- 2483.5 V 45.95 --- -7.83 38.12 --- 74 54 -15.88 4960 V 44.68 --- 1.33 46.01 --- 74 54 -7.99 7440 V 38.24 --- 10.22 48.46 --- 74 54 -5.54 --- 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 two modulation (GFSK, Pi/4DQPSK), and the worst case Mode (Pi/4DQPSK) was submitted only. Page 46 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 Appendix A: Photographs of Test Setup Product: Wireless Karaoke Mic & LED Speaker Model No.: HY-WKM Radiated Emission Page 47 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 Conducted Emission Page 48 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

Report No.: TCT181107E013 Appendix B: Photographs of EUT Product: Wireless Karaoke Mic & LED Speaker Model No.: HY-WKM External Photos Page 49 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

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Report No.: TCT181107E013 Product: Wireless Karaoke Mic & LED Speaker Model No.: HY-WKM Internal Photos Page 53 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com

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Report No.: TCT181107E013 *****END OF REPORT***** Page 56 of 56 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com


Document Created: 2018-11-23 11:46:58
Document Modified: 2018-11-23 11:46:58
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