Test Report

FCC ID: ZBCWD-241B

Test Report

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FCCID_4501139

                                  SGS-CSTC Standards Technical Services Co., Ltd.
                                  Shenzhen Branch




                                                                     Report No.: SZEM190801731501
                                                                     Page:        1 of 29


                                    TEST REPORT
Application No.:                SZEM1908017315CR
Applicant:                      SHENZHEN DNS INDUSTRIES CO., LTD.
Address of Applicant:           23/F Building A, Shenzhen International Innovation Center, No.1006
                                Shennan Road, Futian, shenzhen, 518026 China
Manufacturer:                   SHENZHEN DNS INDUSTRIES CO., LTD.
Address of Manufacturer:        23/F Building A, Shenzhen International Innovation Center, No.1006
                                Shennan Road, Futian, Shenzhen, China
Factory:                        HUIZHOU D&S CABLE CO., LTD.
Address of Factory:             LONGJIN DONGJIANG INDUSTRY ZONE, SHUIKOU, HUICHENG,
                                HUIZHOU, GUANGDONG, CHINA
Equipment Under Test (EUT):
EUT Name:                       WIRELESS CHARGER
Model No.:                      WD-241B, CRC#2046770         ♣
♣                               Please refer to section 2 of this report which indicates which model was
                                actually tested and which were electrically identical.
Trade mark:                     DNS, omars, mbest, power zone, NOVOO
FCC ID:                         ZBCWD-241B
Standard(s) :                   47 CFR Part 15, Subpart C
Date of Receipt:                2019-08-09
Date of Test:                   2019-08-14 to 2019-09-27
Date of Issue:                  2019-10-08
Test Result:                    Pass*
* In the configuration tested, the EUT complied with the standards specified above.




             Keny Xu
       EMC Laboratory Manager


                           SGS-CSTC Standards Technical Services Co., Ltd.
                           Shenzhen Branch
                                                            Report No.: SZEM190801731501
                                                            Page:       2 of 29



                                        Revision Record
     Version       Chapter              Date                   Modifier       Remark

     01                              2019-10-08                               Original




Authorized for issue by:




                             Peter Geng /Project Engineer




                             Eric Fu /Reviewer


                              SGS-CSTC Standards Technical Services Co., Ltd.
                              Shenzhen Branch
                                                                  Report No.: SZEM190801731501
                                                                  Page:       3 of 29



2   Test Summary
    Radio Spectrum Technical Requirement
             Item               Standard                Method                 Requirement           Result
                             47 CFR Part 15,                             47 CFR Part 15, Subpart
    Antenna Requirement                                   N/A                                         Pass
                                Subpart C                                      C 15.203


    Radio Spectrum Matter Part
             Item               Standard                Method                 Requirement           Result
    Conducted Emissions
                             47 CFR Part 15,     ANSI C63.10 (2013)      47 CFR Part 15, Subpart
     at AC Power Line                                                                                 Pass
                                Subpart C           Section 6.2                C 15.207
      (150kHz-30MHz)
                             47 CFR Part 15,     ANSI C63.10 (2013)      47 CFR Part 15, Subpart
       20dB Bandwidth                                                                                 Pass
                                Subpart C          Section 6.9.2               C 15.215
                             47 CFR Part 15,     ANSI C63.10 (2013)      47 CFR Part 15, Subpart
      Restricted Bands                                                                                Pass
                                Subpart C          Section 6.10.5              C 15.205
     Radiated Emissions      47 CFR Part 15,     ANSI C63.10 (2013)      47 CFR Part 15, Subpart
                                                                                                      Pass
       (9kHz-30MHz)             Subpart C           Section 6.4             C 15.205 & 15.209
     Radiated Emissions      47 CFR Part 15,     ANSI C63.10 (2013)      47 CFR Part 15, Subpart
                                                                                                      Pass
       (30MHz-1GHz)             Subpart C           Section 6.5             C 15.205 & 15.209

    Declaration of EUT Family Grouping:

    Model No.: WD-241B, CRC#2046770

    Only the model WD-241B was tested, since the electrical circuit design, layout, components used,
    internal wiring and functions were identical for the above models, with only difference on the model.


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                                              Shenzhen Branch
                                                                                                    Report No.: SZEM190801731501
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3         Contents
                                                                                                                                                          Page
1      COVER PAGE ............................................................................................................................................1

2      TEST SUMMARY .......................................................................................................................................3

3      CONTENTS ................................................................................................................................................4

4      GENERAL INFORMATION ........................................................................................................................5
    4.1        DETAILS OF E.U.T. ...............................................................................................................................5
    4.2        DESCRIPTION OF SUPPORT UNITS .........................................................................................................5
    4.3        MEASUREMENT UNCERTAINTY ..............................................................................................................5
    4.4        TEST LOCATION....................................................................................................................................6
    4.5        TEST FACILITY......................................................................................................................................6
    4.6        DEVIATION FROM STANDARDS ...............................................................................................................6
    4.7        ABNORMALITIES FROM STANDARD CONDITIONS .....................................................................................6
5      EQUIPMENT LIST ......................................................................................................................................7

6      RADIO SPECTRUM TECHNICAL REQUIREMENT ...............................................................................10
    6.1     ANTENNA REQUIREMENT ....................................................................................................................10
       6.1.1 Test Requirement: .......................................................................................................................10
       6.1.2 Conclusion ...................................................................................................................................10
7      RADIO SPECTRUM MATTER TEST RESULTS .....................................................................................11
    7.1     CONDUCTED EMISSIONS AT AC POWER LINE (150KHZ-30MHZ)...........................................................11
       7.1.1 E.U.T. Operation ..........................................................................................................................12
       7.1.2 Test Setup Diagram .....................................................................................................................12
       7.1.3 Measurement Procedure and Data.............................................................................................12
    7.2     20DB BANDWIDTH ..............................................................................................................................15
       7.2.1 E.U.T. Operation ..........................................................................................................................15
       7.2.2 Test Setup Diagram .....................................................................................................................15
       7.2.3 Measurement Procedure and Data.............................................................................................15
    7.3     RESTRICTED BANDS ...........................................................................................................................17
       7.3.1 E.U.T. Operation ..........................................................................................................................17
       7.3.2 Test Setup Diagram .....................................................................................................................17
       7.3.3 Measurement Procedure and Data.............................................................................................17
    7.4     RADIATED EMISSIONS (9KHZ-30MHZ) .................................................................................................19
       7.4.1 E.U.T. Operation ..........................................................................................................................20
       7.4.2 Test Setup Diagram .....................................................................................................................20
       7.4.3 Measurement Procedure and Data.............................................................................................20
    7.5     RADIATED EMISSIONS (30MHZ-1GHZ) ................................................................................................23
       7.5.1 E.U.T. Operation ..........................................................................................................................24
       7.5.2 Test Setup Diagram .....................................................................................................................24
       7.5.3 Measurement Procedure and Data.............................................................................................25
8      PHOTOGRAPHS ......................................................................................................................................29
    8.1        TEST SETUP .......................................................................................................................................29
    8.2        EUT CONSTRUCTIONAL DETAILS (EUT PHOTOS).................................................................................29


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                             Shenzhen Branch
                                                               Report No.: SZEM190801731501
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4   General Information
4.1 Details of E.U.T.
    Power supply:            Input: DC 5V/2A, DC 9V/1.67A
                             Output: DC 5V/1A, DC 9V/1.1A
    Operation frequency      111.54kHz-162.02kHz
    Modulation type:         Load modulation
    Antenna type:            Inductive loop coil antenna


4.2 Description of Support Units

    Description                         Manufacturer          Model No.                Serial No.
    Adapter                                   Apple         A1357 W010A051       REF. No.SEA0500
    Adapter                                 SAMSUNG            EP-TA200          R37J8YA7W71DK3
    Adapter(for radiated emission)            LeTV            EQ-24BCN                65201C44220
    Micro USB Cable                         PHILIPS            SWR2101           REF. No.SEA0700
    SAMSUNG Galaxy S8                       SAMSUNG           SM-G9500                R28J9140LPB


4.3 Measurement Uncertainty

      No.                            Item                         Measurement Uncertainty
       1                      Radio Frequency                             ± 7.25 x 10-8
       2                         Duty cycle                                  ± 0.37%
       3                    Occupied Bandwidth                                ± 3%
       4                    Conduction emission                   ± 3.0dB (150kHz to 30MHz)
                                                                    ± 4.5dB (Below 1GHz)
       5               Radiated Spurious emission test
                                                                    ± 4.8dB (Above 1GHz)
       6                      Temperature test                                ± 1°C
       7                        Humidity test                                 ± 3%
       8                      Supply voltages                                ± 1.5%
       9                             Time                                     ± 3%


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                                                               Report No.: SZEM190801731501
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4.4 Test Location
    All tests were performed at:
    SGS-CSTC Standards Technical Services Co., Ltd., Shenzhen Branch
    No. 1 Workshop, M-10, Middle Section, Science & Technology Park, Shenzhen, Guangdong, China.
    518057.
    Tel: +86 755 2601 2053        Fax: +86 755 2671 0594
    No tests were sub-contracted.
4.5 Test Facility
    The test facility is recognized, certified, or accredited by the following organizations:
    • CNAS (No. CNAS L2929)
    CNAS has accredited SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch EMC
    Lab to ISO/IEC 17025:2005 General Requirements for the Competence of Testing and Calibration
    Laboratories (CNAS-CL01 Accreditation Criteria for the Competence of Testing and Calibration
    Laboratories) for the competence in the field of testing.
    • A2LA (Certificate No. 3816.01)
    SGS-CSTC Standards Technical Services Co., Ltd., Shenzhen EMC Laboratory is accredited by the
    American Association for Laboratory Accreditation(A2LA). Certificate No. 3816.01.
    • VCCI
    The 3m Fully-anechoic chamber for above 1GHz, 10m Semi-anechoic chamber for below 1GHz,
    Shielded Room for Mains Port Conducted Interference Measurement and Telecommunication Port
    Conducted Interference Measurement of SGS-CSTC Standards Technical Services Co., Ltd. have
    been registered in accordance with the Regulations for Voluntary Control Measures with Registration
    No.: G-20026, R-14188, C-12383 and T-11153 respectively.
    • FCC –Designation Number: CN1178
    SGS-CSTC Standards Technical Services Co., Ltd., Shenzhen EMC Laboratory has been recognized
    as an accredited testing laboratory.
    Designation Number: CN1178. Test Firm Registration Number: 406779.
    • Innovation, Science and Economic Development Canada
    SGS-CSTC Standards Technical Services Co., Ltd., Shenzhen EMC Laboratory has been recognized
    by ISED as an accredited testing laboratory.
    CAB identifier: CN0006.
    IC#: 4620C.
4.6 Deviation from Standards
    None
4.7 Abnormalities from Standard Conditions
    None


                                SGS-CSTC Standards Technical Services Co., Ltd.
                                Shenzhen Branch
                                                                    Report No.: SZEM190801731501
                                                                    Page:       7 of 29



5      Equipment List
Conducted Emissions at AC Power Line (150kHz-30MHz)
        Equipment             Manufacturer         Model No       Inventory No    Cal Date    Cal Due Date
     Shielding Room         ZhongYu Electron         GB-88        SEM001-06      2019-06-13    2022-06-12
                                                  e3 V8.2014-6-
Measurement Software             AUDIX                                N/A           N/A           N/A
                                                       27
      Coaxial Cable               SGS                 N/A         SEM024-01      2019-07-11    2020-07-10
           LISN             Rohde & Schwarz         ENV216        SEM007-01      2019-09-24    2020-09-23
           LISN              ETS-LINDGREN            3816/2       SEM007-02      2019-04-01    2020-03-31
    EMI Test Receiver       Rohde & Schwarz           ESCI        SEM004-02      2019-04-01    2020-03-31


20dB Bandwidth
        Equipment             Manufacturer         Model No       Inventory No    Cal Date    Cal Due Date
     Shielding Room              SAEMC              MSR733        SEM001-09      2019-06-13    2022-06-12
    DC Power Supply             Zhao Xin           KXN-6020D      SEM011-08      2019-09-24    2020-09-23
    Spectrum Analyzer       Rohde & Schwarz           FSP         SEM004-06      2019-09-24    2020-09-23
                                                   JS1120-2
Measurement Software           JS Tonscend                            N/A           N/A           N/A
                                                  BT/WIFI V2.
      Coaxial Cable               SGS                 N/A         SEM031-02      2019-07-11    2020-07-10
        Attenuator         Weinschel Associates      WA41         SEM021-09         N/A           N/A
     Signal Generator          KEYSIGHT             N5173B        SEM006-05      2019-09-24    2020-09-23
       Power Meter          Rohde & Schwarz          NRVS         SEM014-02      2019-09-24    2020-09-23
 Electric and Magnetic                               NBM-
                                  Narda                            EMC2143       2018-02-07    2020-02-06
    Field Analyzer                                550/EHP-50F
    Electric Field Probe      WANDEL &
                                                    EMR-20         EMC0907       2019-05-21    2020-05-20
      (100KHz-3GHz)          GOLTERMANN
       EMF Tester                 Narda             ELT-400        SZE039-4      2019-07-08    2020-07-07


Restricted Bands
        Equipment             Manufacturer         Model No       Inventory No    Cal Date    Cal Due Date
     Shielding Room              SAEMC              MSR733        SEM001-09      2019-06-13    2022-06-12
    DC Power Supply             Zhao Xin           KXN-6020D      SEM011-08      2019-09-24    2020-09-23
    Spectrum Analyzer       Rohde & Schwarz           FSP         SEM004-06      2019-09-24    2020-09-23
                                                   JS1120-2
Measurement Software           JS Tonscend                            N/A           N/A           N/A
                                                  BT/WIFI V2.
      Coaxial Cable               SGS                 N/A         SEM031-02      2019-07-11    2020-07-10
        Attenuator         Weinschel Associates      WA41         SEM021-09         N/A           N/A
     Signal Generator          KEYSIGHT             N5173B        SEM006-05      2019-09-24    2020-09-23
       Power Meter          Rohde & Schwarz          NRVS         SEM014-02      2019-09-24    2020-09-23
 Electric and Magnetic                               NBM-
                                  Narda                            EMC2143       2018-02-07    2020-02-06
    Field Analyzer                                550/EHP-50F


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                                                               Report No.: SZEM190801731501
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  Electric Field Probe     WANDEL &
                                               EMR-20         EMC0907       2019-05-21    2020-05-20
    (100KHz-3GHz)         GOLTERMANN
     EMF Tester               Narda            ELT-400        SZE039-4      2019-07-08    2020-07-07


Radiated Emissions (9kHz-30MHz)
      Equipment            Manufacturer       Model No       Inventory No    Cal Date    Cal Due Date
  10m Semi-Anechoic
                              SAEMC           FSAC1018       SEM001-03      2018-03-31    2021-03-30
      Chamber
                                             e3 V8.2014-6-
Measurement Software          AUDIX                              N/A           N/A           N/A
                                                  27
    Coaxial Cable              SGS               N/A         SEM029-01      2019-07-11    2020-07-10
  EMI Test Receiver
                         Rohde & Schwarz         ESR         SEM004-03      2019-04-01    2020-03-31
    (9kHz-7GHz)
   Trilog-Broadband
        Antenna            Schwarzbeck        VULB9168       SEM003-18      2019-08-08    2022-08-07
    (30MHz-1GHz)
                         Sonoma Instrument
     Pre-amplifier                               310N        SEM005-04      2019-04-12    2020-04-11
                               Co
 Active Loop Antenna       ETS-Lindgren          6502        SEM003-08      2017-08-22    2020-08-21


Radiated Emissions (30MHz-1GHz)
      Equipment            Manufacturer       Model No       Inventory No    Cal Date    Cal Due Date
  10m Semi-Anechoic
                              SAEMC           FSAC1018       SEM001-03      2018-03-31    2021-03-30
      Chamber
                                             e3 V8.2014-6-
Measurement Software          AUDIX                              N/A           N/A           N/A
                                                  27
    Coaxial Cable              SGS               N/A         SEM029-01      2019-07-11    2020-07-10
  EMI Test Receiver
                         Rohde & Schwarz         ESR         SEM004-03      2019-04-01    2020-03-31
    (9kHz-7GHz)
   Trilog-Broadband
        Antenna            Schwarzbeck        VULB9168       SEM003-18      2019-08-08    2022-08-07
    (30MHz-1GHz)
                         Sonoma Instrument
     Pre-amplifier                               310N        SEM005-04      2019-04-12    2020-04-11
                               Co
 Active Loop Antenna       ETS-Lindgren          6502        SEM003-08      2017-08-22    2020-08-21


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                                                         Report No.: SZEM190801731501
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General used equipment
     Equipment           Manufacturer       Model No   Inventory No    Cal Date    Cal Due Date
                            Shanghai
Humidity/ Temperature
                          Meteorological     ZJ1-2B    SEM002-03      2019-09-26    2020-09-25
      Indicator
                         Industry Factory
                            Shanghai
Humidity/ Temperature
                          Meteorological     ZJ1-2B    SEM002-04      2019-09-26    2020-09-25
      Indicator
                         Industry Factory
Humidity/ Temperature
                             Mingle           N/A      SEM002-08      2019-09-26    2020-09-25
      Indicator
                           Changchun
      Barometer           Meteorological     DYM3      SEM002-01      2019-04-04    2020-04-03
                         Industry Factory


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                                                                   Report No.: SZEM190801731501
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6     Radio Spectrum Technical Requirement
6.1 Antenna Requirement
6.1.1 Test Requirement:
      47 CFR Part 15, Subpart C 15.203
      Limit:

Standard Requirement:
An intentional radiator shall be designed to ensure that no antenna other than that furnished by the
responsible party shall be used with the device. The use of a antenna that uses a unique coupling to the
intentional radiator, the manufacturer may design the unit permanently attached antenna or of an so that a
broken antenna can be replaced by the user, but the use of a standard antenna jack or electrical connector is
prohibited.

EUT Antenna:
The antenna is integrated on the main PCB and no consideration of replacement.



6.1.2 Conclusion
      EUT Antenna:




      The antenna is integrated on the main PCB and no consideration of replacement.


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7     Radio Spectrum Matter Test Results
7.1 Conducted Emissions at AC Power Line (150kHz-30MHz)
      Test Requirement         47 CFR Part 15, Subpart C 15.207
      Test Method:             ANSI C63.10 (2013) Section 6.2
      Limit:


       Frequency of                               Conducted limit(dBμV)
      emission(MHz)                    Quasi-peak                    Average
          0.15-0.5                       66 to 56*                   56 to 46*
            0.5-5                           56                            46
            5-30                            60                            50
*Decreases with the logarithm of the frequency.


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7.1.1 E.U.T. Operation
      Operating Environment:
      Temperature:      18.6 °C       Humidity: 50.4 % RH       Atmospheric Pressure: 1000            mbar
      Pretest these     a:Charge mode_Keep the EUT charging(5W)
      modes to find     b: Charge mode_Keep the EUT charging(10W)
      the worst case:
      The worst case    b: Charge mode_Keep the EUT charging(10W)
      for final test:
7.1.2 Test Setup Diagram




7.1.3 Measurement Procedure and Data
      1) The mains terminal disturbance voltage test was conducted in a shielded room.
      2) The EUT was connected to AC power source through a LISN 1 (Line Impedance Stabilization
      Network) which provides a 50ohm/50μH + 5ohm linear impedance. The power cables of all other
      units of the EUT were connected to a second LISN 2, which was bonded to the ground reference
      plane in the same way as the LISN 1 for the unit being measured. A multiple socket outlet strip was
      used to connect multiple power cables to a single LISN provided the rating of the LISN was not
      exceeded.
      3) The tabletop EUT was placed upon a non-metallic table 0.8m above the ground reference plane.
      And for floor-standing arrangement, the EUT was placed on the horizontal ground reference plane,
      4) The test was performed with a vertical ground reference plane. The rear of the EUT shall be 0.4 m
      from the vertical ground reference plane. The vertical ground reference plane was bonded to the
      horizontal ground reference plane. The LISN 1 was placed 0.8 m from the boundary of the unit under
      test and bonded to a ground reference plane for LISNs mounted on top of the ground reference
      plane. This distance was between the closest points of the LISN 1 and the EUT. All other units of the
      EUT and associated equipment was at least 0.8 m from the LISN 2.
      5) In order to find the maximum emission, the relative positions of equipment and all of the interface
      cables must be changed according to ANSI C63.10 on conducted measurement.
      Remark: LISN=Read Level+ Cable Loss+ LISN Factor


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Mode:b; Line:Live Line


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Mode:b; Line:Neutral Line


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                                                               Report No.: SZEM190801731501
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7.2 20dB Bandwidth
      Test Requirement      47 CFR Part 15, Subpart C 15.215
      Test Method:          ANSI C63.10 (2013) Section 6.9.2
      Limit:

For report reference only

7.2.1 E.U.T. Operation
      Operating Environment:
      Temperature:      27.3 °C       Humidity: 40.9 % RH       Atmospheric Pressure: 1000   mbar
      Pretest these     a:Charge mode_Keep the EUT charging(5W)
      modes to find     b: Charge mode_Keep the EUT charging(10W)
      the worst case:
      The worst case    b: Charge mode_Keep the EUT charging(10W)
      for final test:
7.2.2 Test Setup Diagram




7.2.3 Measurement Procedure and Data


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                                                         * RBW 10 Hz     Marker 1 [T1 ]
                                                         * VBW 30 Hz               -34.07 dBm
       Ref -20 dBm                * Att    10 dB          SWT 1 s           112.360737179 kHz

       -20                                                               ndB [T1]   20.00   dB
                                                                         BW 26.121794872    Hz
       -30                                                               Temp 1 [T1 ndB]          B
                                                     1
                                                                                   -54.19   dBm
1 PK                                                                        112.347596154   kHz
VIEW
       -40                                                               Temp 2 [T1 ndB]
                                                                                   -54.05   dBm
                                                                            112.373717949   kHz
       -50                                T1                        T2


       -60



       -70

                                                                                                  3DB
       -80



       -90



       -100



       -110


       -120

       Center   112.3607372 kHz                    10 Hz/                        Span   100 Hz


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7.3 Restricted Bands
     Test Requirement         47 CFR Part 15, Subpart C 15.205
     Test Method:             ANSI C63.10 (2013) Section 6.10.5
     Limit:

The fundamental wave can not fall in the restricted band 90KHz-110KHz

7.3.1 E.U.T. Operation
      Operating Environment:
      Temperature:      28.3 °C       Humidity: 42 % RH         Atmospheric Pressure: 1000   mbar
      Pretest these     a:Charge mode_Keep the EUT charging(5W)
      modes to find     b: Charge mode_Keep the EUT charging(10W)
      the worst case:
      The worst case    b: Charge mode_Keep the EUT charging(10W)
      for final test:
7.3.2 Test Setup Diagram




7.3.3 Measurement Procedure and Data


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                                                              Report No.: SZEM190801731501
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                                              * RBW 1 kHz   Marker 1 [T1 ]
                                              * VBW 3 kHz             -41.37 dBm
       Ref -20 dBm        * Att   10 dB        SWT 100 ms      112.339743590 kHz

       -20                                                  OBW 50.480769231   kHz
                                                            Temp 1 [T1 OBW]
       -30                                                            -46.84   dBm   B
                                                               111.538461538   kHz
1 PK                                                        Temp 2 [T1 OBW]
VIEW             1
       -40                                                            -49.98   dBm
                T1                                             162.019230769   kHz
                                                      T2
       -50



       -60



       -70

                                                                                     3DB
       -80



       -90



       -100



       -110


       -120

       Center   150 kHz                   10 kHz/                  Span   100 kHz


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7.4 Radiated Emissions (9kHz-30MHz)
      Test Requirement      47 CFR Part 15, Subpart C 15.205 & 15.209
      Test Method:          ANSI C63.10 (2013) Section 6.4
      Measurement Distance: 3m
      Limit:

  Frequency(MHz)          Field strength(microvolts/meter)                Measurement distance(meters)
     0.009-0.490                       2400/F(kHz)                                          300
     0.490-1.705                       24000/F(kHz)                                          30
      1.705-30.0                          30                               30
Remark: The emission limits shown in the above table are based on measurements employing a
CISPR quasi-peak detector except for the frequency bands 9-90kHz, 110-490kHz. Radiated
emission limits in these three bands are based on measurements employing an average detector,
the peak field strength of any emission shall not exceed the maximum permitted average limits
specified above by more than 20 dB under any condition of modulation.

If field strength is measured at only a single point, then that point shall be at the radial from the EUT that
produces the maximum emission at the frequency being measured, as described in 5.4. If that point is closer
to the EUT than λ/2π and the limit distance is greater than λ/2π, the measurement shall be extrapolated to
the limit distance by conservatively presuming that the field strength decreases at a 40 dB/decade of distance
rate to the λ/2π distance, and at a 20 dB/decade of distance rate beyond λ/2π. This shall be accomplished
using Equation (2):

                         FS(10m) = FS(30/300m) + 40log{d(near field)/d(10m)} + 20log{d(30/300m)/d(near field)}     (2)

If the single point measured is at a distance greater than λ/2π, then extrapolation to the limit distance shall be
calculated using Equation (3):

                         FS(10m) = FS(30/300m) + 20log{d(30/300m)/d(10m)}                                    (3)

If both the single point and the limit distance are equal to or closer to the EUT than λ/2π, then extrapolation to
the limit distance shall be calculated using Equation (4):

                         FS(10m) = FS(30/300m) + 40log{d(30/300m)/d(10m)}                                    (4)

Remark:
                       dnear field = 47.77 / fMHz
where fMHz is the frequency of the emission being measured in MHz.


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7.4.1 E.U.T. Operation
      Operating Environment:
      Temperature:      25 °C         Humidity: 45 % RH         Atmospheric Pressure: 1000            mbar
      Pretest these     a:Charge mode_Keep the EUT charging(5W)
      modes to find     b: Charge mode_Keep the EUT charging(10W)
      the worst case:
      The worst case    b: Charge mode_Keep the EUT charging(10W)
      for final test:
7.4.2 Test Setup Diagram




7.4.3 Measurement Procedure and Data
      For testing performed with the loop antenna, the center of the loop was positioned 1 m above the
      ground and positioned with its plane vertical at the specified distance from the EUT. During testing
      the loop was rotated about its vertical axis for maximum response at each azimuth and also
      investigated with the loop positioned in the horizontal plane. Only the worst position of vertical was
      shown in the report.


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                              SGS-CSTC Standards Technical Services Co., Ltd.
                              Shenzhen Branch
                                                                Report No.: SZEM190801731501
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7.5 Radiated Emissions (30MHz-1GHz)
     Test Requirement      47 CFR Part 15, Subpart C 15.205 & 15.209
     Test Method:          ANSI C63.10 (2013) Section 6.5
     Measurement Distance: 10m
     Limit:

      Frequency(MHz)             Field strength(microvolts/meter)     Measurement distance(meters)
            30-88                               100                                  3
           88-216                               150                                  3
           216-960                              200                                  3
          Above 960                             500                                   3
Remark: The emission limits shown in the above table are based on measurements employing a CISPR
quasi-peak detector except for the frequency bands above 1000 MHz. Radiated emission limits in these
three bands are based on measurements employing an average detector, the peak field strength of any
emission shall not exceed the maximum permitted average limits specified above by more than 20 dB under
any condition of modulation.


                            SGS-CSTC Standards Technical Services Co., Ltd.
                            Shenzhen Branch
                                                            Report No.: SZEM190801731501
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7.5.1 E.U.T. Operation
      Operating Environment:
      Temperature:      25 °C         Humidity: 45 % RH         Atmospheric Pressure: 1000   mbar
      Pretest these     a:Charge mode_Keep the EUT charging(5W)
      modes to find     b: Charge mode_Keep the EUT charging(10W)
      the worst case:
      The worst case    b: Charge mode_Keep the EUT charging(10W)
      for final test:
7.5.2 Test Setup Diagram


                                SGS-CSTC Standards Technical Services Co., Ltd.
                                Shenzhen Branch
                                                                   Report No.: SZEM190801731501
                                                                   Page:       25 of 29

7.5.3 Measurement Procedure and Data
      a. The EUT was placed on the top of a rotating table 0.8 meters above the ground for below 1GHz at
      a 3 meter semi-anechoic chamber. The table was rotated 360 degrees to determine the position of
      the highest radiation.
      b. The EUT was set 3 meters away from the interference-receiving antenna, which was mounted on
      the top of a variable-height antenna tower.
      c. The antenna height is varied from one meter to four meters above the ground to determine the
      maximum value of the field strength. Both horizontal and vertical polarizations of the antenna are set
      to make the measurement.
      d. For each suspected emission, the EUT was arranged to its worst case and then the antenna was
      tuned to heights from 1 meter to 4 meters (for the test frequency of below 30MHz, the antenna was
      tuned to heights 1 meter) and the rotatable table was turned from 0 degrees to 360 degrees to find
      the maximum reading.
      e. The test-receiver system was set to Peak Detect Function and Specified Bandwidth with Maximum
      Hold Mode.
      f. If the emission level of the EUT in peak mode was 10dB lower than the limit specified, then testing
      could be stopped and the peak values of the EUT would be reported. Otherwise the emissions that
      did not have 10dB margin would be re-tested one by one using peak, quasi-peak or average method
      as specified and then reported in a data sheet.
      g. Test the EUT in the lowest channel,the middle channel,the Highest channel
      h. The radiation measurements are performed in X, Y, Z axis positioning for Transmitting mode,And
      found the X axis positioning which it is worse case.
      i. Repeat above procedures until all frequencies measured was complete.
      Remark: Level= Read Level+ Cable Loss+ Antenna Factor- Preamp Factor


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                        Shenzhen Branch
                                              Report No.: SZEM190801731501
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Mode:b; Polarization:Horizontal


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                                Shenzhen Branch
                                                      Report No.: SZEM190801731501
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Mode:b; Polarization:Vertical


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                                 Shenzhen Branch
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The test was performed at a 10m test site. According to below formulate and the test data at 10m test
distance,
  L3 / L10 = D10 / D3
    Note:
    L3: Level @ 3m distance. Unit: uV/m;
    L10: Level @ 10m distance. Unit: uV/m;
    D3: 3m distance. Unit: m
    D10: 10m distance. Unit: m
The level at 3m test distance is below:
                Level @
Frequency                       Level @      Level @ 3m   Level @ 3m    Limit @ 3m                     Ant.
                  10m                                                                Margin (dB)
  (MHz)                       10m (uV/m)       (uV/m)      (dBuV/m)      (dBuV/m)                  Polarization
               (dBuV/m)
   32.29          23.98           15.81        52.71        34.44         40.00         -5.56           V
   58.41          20.63           10.75        35.84        31.09         40.00         -8.91           V
   63.98          20.62           10.74        35.80        31.08         40.00         -8.92           V
  103.81          21.91           12.46        41.53        32.37         43.50        -11.13           V
  432.55          20.94           11.14        37.14        31.40         46.00        -14.60           V
  682.35          25.95           19.84        66.13        36.41         46.00         -9.59           V
   32.52          15.05            5.66        18.85        25.51         40.00        -14.49           H
   50.06          14.27            5.17        17.23        24.73         40.00        -15.27           H
  162.61          15.49            5.95        19.83        25.95         43.50        -17.55           H
  487.32          21.78           12.27        40.91        32.24         46.00        -13.76           H
  607.79          24.94           17.66        58.87        35.40         46.00        -10.60           H
  925.76          28.50           26.61        88.69        38.96         46.00         -7.04           H


                               SGS-CSTC Standards Technical Services Co., Ltd.
                               Shenzhen Branch
                                                                    Report No.: SZEM190801731501
                                                                    Page:       29 of 29



8    Photographs

8.1 Test Setup
Refer to Setup Photos



8.2 EUT Constructional Details (EUT Photos)
Refer to EUT external and internal photos



                                            - End of the Report -



Document Created: 2019-10-22 06:13:22
Document Modified: 2019-10-22 06:13:22

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