Test Report (2 of 2)

FCC ID: 2APU8CQL1624-B

Test Report

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FCCID_3921208

                                                                         Report No.: TCT180615E012
                                   depending on the radiation pattern of the emission
                                   and staying aimed at the emission source for
                                   receiving the maximum signal. The final
                                   measurement antenna elevation shall be that which
                                   maximizes the emissions. The measurement
                                   antenna elevation for maximum emissions shall be
                                   restricted to a range of heights of from 1 m to 4 m
                                   above the ground or reference ground plane.
                                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




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                                                                                             Report No.: TCT180615E012

6.11.2.         Test Instruments

                                   Radiated Emission Test Site (966)
       Name of                                                                Serial
                                Manufacturer              Model                               Calibration Due
      Equipment                                                              Number
                              ROHDE&SCHW
     Test Receiver                                        ESVD                100008            Sep. 27, 2018
                                  ARZ
                              ROHDE&SCHW
 Spectrum Analyzer                                         FSQ                200061            Sep. 27, 2018
                                  ARZ
                               EM Electronics
     Pre-amplifier              Corporation             EM30265             07032613            Sep. 27, 2018
                                 CO.,LTD
     Pre-amplifier                        HP              8447D           2727A05017            Sep. 27, 2018

     Loop antenna                   ZHINAN             ZN30900A                12024            Sep. 27, 2018

Broadband Antenna                Schwarzbeck           VULB9163                 340             Sep. 27, 2018

     Horn Antenna                Schwarzbeck          BBHA 9120D                631             Sep. 27, 2018

     Horn Antenna                Schwarzbeck            BBH 9170                582             Sep. 27, 2018
    Antenna Mast                     Keleto             CC-A-4M                 N/A                    N/A
      Coax cable
                                          TCT           RE-low-01               N/A             Sep. 27, 2018
     (9KHz-1GHz)
      Coax cable
                                          TCT          RE-high-02               N/A             Sep. 27, 2018
    (9KHz-40GHz)
      Coax cable
                                          TCT           RE-low-03               N/A             Sep. 27, 2018
     (9KHz-1GHz)
      Coax cable
                                          TCT          RE-high-04               N/A             Sep. 27, 2018
    (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).




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                                                                                              Report No.: TCT180615E012

  6.11.3.      Test Data

Duty cycle correction factor for average measurement

  DH5 on time (One Pulse) Plot on Channel 00




  DH5 on time (Count Pulses) Plot on Channel 00




 Note:
    1. Worst case Duty cycle = on time/100 milliseconds = (2.976*27+2.500)/100=0.8285
    2. Worst case Duty cycle correction factor = 20*log (Duty cycle) = -1.63dB
    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 (-1.63dB)
        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.




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                                                                             Report No.: TCT180615E012

Please refer to following diagram for individual
                                              Below 1GHz
Horizontal:




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                                                                                          Report No.: TCT180615E012


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/4 DQPSK) and the worst case Mode (Lowest channel and Pi/4 DQPSK) was submitted only.




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                                                                                              Report No.: TCT180615E012


                                                    Above 1GHz
     Modulation Type: Pi/4 DQPSK
     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        48.29   ---    -8.27    40.02      ---    74        54     -13.98
        4804       H        45.36   ---     0.66    46.02      ---    74        54      -7.98
        7206       H        36.85   ---     9.50    46.35      ---    74        54      -7.65
         ---       H         ---    ---      ---     ---       ---    ---       ---       ---

       2390         V        46.47        ---      -8.27       38.20        ---        74         54        -15.80
       4804         V        44.58        ---       0.66       45.24        ---        74         54         -8.76
       7206         V        37.12        ---       9.50       46.62        ---        74         54         -7.38
        ---         V         ---         ---        ---        ---         ---        ---        ---          ---

     Middle channel: 2441 MHz
                           Peak          AV    Correction Emission Level
     Frequency Ant. Pol.                                                 Peak limit AV limit Margin
       (MHz)      H/V     reading      reading  Factor    Peak      AV   (dBµV/m) (dBµV/m)    (dB)
                          (dBµV)       (dBµV)   (dB/m) (dBµV/m) (dBµV/m)
        4882       H       47.37          ---    0.99     48.36      ---    74        54     -5.64
        7323       H       38.45          ---    9.87     48.32      ---    74        54     -5.68
         ---       H         ---          ---      ---     ---       ---    ---       ---      ---

       4882         V        46.59        ---       0.99       47.58         ---       74         54         -6.42
       7323         V        38.21        ---       9.87       48.08         ---       74         54         -5.92
        ---         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     47.35           ---    -7.83    39.52      ---    74        54     -14.48
        4960        H     46.46           ---     1.33    47.79      ---    74        54      -6.21
        7440        H     36.74           ---    10.22    46.96      ---    74        54      -7.04
         ---        H       ---           ---      ---     ---       ---    ---       ---       ---

      2483.5        V        48.76        ---      -7.83       40.93        ---        74         54        -13.07
       4960         V        48.29        ---       1.33       49.62        ---        74         54         -4.38
       7440         V        36.22        ---      10.22       46.44        ---        74         54         -7.56
        ---         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/4 DQPSK), and the worst case Mode (Pi/4 DQPSK)
      was submitted only.




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                                                                         Report No.: TCT180615E012


                   Appendix A: Photographs of Test Setup
                               Product: Bluetooth Speaker
                                  Model: CQL1624-B
                                   Radiated Emission




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                                                                         Report No.: TCT180615E012


                                   Conducted Emission




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                                                                         Report No.: TCT180615E012


                        Appendix B: Photographs of EUT
                              Product: Bluetooth Speaker
                                  Model: CQL1624-B
                                   External Photos




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                                                                         Report No.: TCT180615E012




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                                                                         Report No.: TCT180615E012




                                                                                 Page 51 of 55

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                                                                         Report No.: TCT180615E012




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                                                                         Report No.: TCT180615E012


                             Product: Bluetooth Speaker
                                   Model: CQL1624-B
                                    Internal Photos




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                                                                         Report No.: TCT180615E012




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                                                                         Report No.: TCT180615E012




                             *****END OF REPORT*****




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Document Created: 2018-07-09 11:37:02
Document Modified: 2018-07-09 11:37:02

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