Test report part 2

FCC ID: 2AJOTTA-1187

Test Report

Download: PDF
FCCID_4399111

            FCC RF Test Report                                                  Report No. : FR952702A



                            CSE Plot on Ch 78 between 30MHz ~ 3 GHz




                            CSE Plot on Ch 78 between 2 GHz ~ 25 GHz




Sporton International (Kunshan) Inc.                                     Page Number         : 54 of 63
TEL : +86-512-57900158                                                   Report Issued Date : Aug. 05, 2019
FAX : +86-512-57900958                                                   Report Version      : Rev. 01
FCC ID: 2AJOTTA-1187                                              Report Template No.: BU5-FR15CBT Version 2.0


            FCC RF Test Report                                                         Report No. : FR952702A

3.8 Radiated Band Edges and Spurious Emission Measurement
3.8.1 Limit of Radiated Band Edges and Spurious Emission
         In any 100 kHz bandwidth outside the intentional radiator frequency band, all harmonics/spurious
         must be at least 20 dB below the highest emission level within the authorized band. In addition,
         radiated emissions which fall in the restricted bands must also comply with the limits as below.
                      Frequency                      Field Strength                 Measurement Distance
                         (MHz)                     (microvolts/meter)                        (meters)
                    0.009 – 0.490                      2400/F(kHz)                              300
                    0.490 – 1.705                     24000/F(kHz)                              30
                     1.705 – 30.0                           30                                  30
                        30 – 88                            100                                   3
                       88 – 216                            150                                   3
                       216 - 960                           200                                   3
                      Above 960                            500                                   3


3.8.2 Measuring Instruments
         The measuring equipment is listed in the section 4 of this test report.




Sporton International (Kunshan) Inc.                                            Page Number         : 55 of 63
TEL : +86-512-57900158                                                          Report Issued Date : Aug. 05, 2019
FAX : +86-512-57900958                                                          Report Version      : Rev. 01
FCC ID: 2AJOTTA-1187                                                     Report Template No.: BU5-FR15CBT Version 2.0


               FCC RF Test Report                                                       Report No. : FR952702A

3.8.3 Test Procedures
          1.     The EUT was placed on a turntable with 0.8 meter for frequency below 1GHz and 1.5 meter for
                 frequency above 1GHz respectively above ground.
          2.     The EUT was set 3 meters from the interference receiving antenna, which was mounted on the
                 top of a variable height antenna tower.
          3.     For each suspected emission, 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 for the test in order to get better
                 signal level to comply with the guidelines.
          4.     Set to the maximum power setting and enable the EUT transmit continuously.
          5.     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)
          6.     Corrected Reading: Antenna Factor + Cable Loss + Read Level - Preamp Factor = Level
          7.     For testing below 1GHz, if the emission level of the EUT in peak mode was 3 dB lower than the
                 limit specified, then peak values of EUT will be reported, otherwise, the emissions will be
                 repeated one by one using the CISPR quasi-peak method and reported.
          8.     For testing above 1GHz, the emission level of the EUT in peak mode was 20dB lower than
                 average limit (that means the emission level in average mode also complies with the limit in
                 average mode), then peak values of EUT will be reported, otherwise, the emissions will be
                 measured in average mode again and reported.


         Note: The average levels were calculated from the peak level corrected with duty cycle correction
         factor (-24.76dB) 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.




Sporton International (Kunshan) Inc.                                             Page Number         : 56 of 63
TEL : +86-512-57900158                                                           Report Issued Date : Aug. 05, 2019
FAX : +86-512-57900958                                                           Report Version      : Rev. 01
FCC ID: 2AJOTTA-1187                                                      Report Template No.: BU5-FR15CBT Version 2.0


            FCC RF Test Report                                     Report No. : FR952702A

3.8.4 Test Setup
         For radiated emissions below 30MHz




         For radiated emissions from 30MHz to 1GHz




         For radiated emissions above 1GHz




Sporton International (Kunshan) Inc.                        Page Number         : 57 of 63
TEL : +86-512-57900158                                      Report Issued Date : Aug. 05, 2019
FAX : +86-512-57900958                                      Report Version      : Rev. 01
FCC ID: 2AJOTTA-1187                                 Report Template No.: BU5-FR15CBT Version 2.0


            FCC RF Test Report                                                    Report No. : FR952702A

3.8.5 Test Results of Radiated Spurious Emissions (9 kHz ~ 30 MHz)
         The low frequency, which started from 9 kHz to 30MHz, was pre-scanned and the result which was
         20dB lower than the limit line was not reported.
         There is a comparison data of both open-field test site and semi-Anechoic chamber, and the result
         came out very similar.



3.8.6     Test Result of Radiated Spurious at Band Edges
         Please refer to Appendix B.



3.8.7     Test Result of Radiated Spurious Emission (30MHz ~ 10th Harmonic)
         Please refer to Appendix B.



3.8.8     Duty cycle correction factor for average measurement
         Please refer to Appendix C.




Sporton International (Kunshan) Inc.                                       Page Number         : 58 of 63
TEL : +86-512-57900158                                                     Report Issued Date : Aug. 05, 2019
FAX : +86-512-57900958                                                     Report Version      : Rev. 01
FCC ID: 2AJOTTA-1187                                                Report Template No.: BU5-FR15CBT Version 2.0


            FCC RF Test Report                                                         Report No. : FR952702A

3.9 AC Conducted Emission Measurement
3.9.1 Limit of AC Conducted Emission
         For equipment that is designed to be connected to the public utility (AC) power line, the radio
         frequency voltage that is conducted back onto the AC power line on any frequency or frequencies
         within the band 150 kHz to 30 MHz shall not exceed the limits in the following table.

                                                                   Conducted limit (dBμV)
            Frequency of 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.



3.9.2 Measuring Instruments
         The measuring equipment is listed in the section 4 of this test report.


3.9.3 Test Procedures
          1. The EUT was placed 0.4 meter from the conducting wall of the shielding room was kept at least
              80 centimeters from any other grounded conducting surface.
          2. Connect EUT to the power mains through a line impedance stabilization network (LISN).
          3. All the support units are connecting to the other LISN.
          4. The LISN provides 50 ohm coupling impedance for the measuring instrument.
          5. The FCC states that a 50 ohm, 50 microhenry LISN should be used.
          6. Both sides of AC line were checked for maximum conducted interference.
          7. The frequency range from 150 kHz to 30 MHz was searched.
          8. Set the test-receiver system to Peak Detect Function and specified bandwidth (IF Bandwidth =
              9kHz) with Maximum Hold Mode. Then measurement is also conducted by Average Detector
              and Quasi-Peak Detector Function respectively.




Sporton International (Kunshan) Inc.                                            Page Number         : 59 of 63
TEL : +86-512-57900158                                                          Report Issued Date : Aug. 05, 2019
FAX : +86-512-57900958                                                          Report Version      : Rev. 01
FCC ID: 2AJOTTA-1187                                                     Report Template No.: BU5-FR15CBT Version 2.0


            FCC RF Test Report                             Report No. : FR952702A

3.9.4 Test Setup




3.9.5 Test Result of AC Conducted Emission
         Please refer to Appendix A.




Sporton International (Kunshan) Inc.                Page Number         : 60 of 63
TEL : +86-512-57900158                              Report Issued Date : Aug. 05, 2019
FAX : +86-512-57900958                              Report Version      : Rev. 01
FCC ID: 2AJOTTA-1187                         Report Template No.: BU5-FR15CBT Version 2.0


            FCC RF Test Report                                                      Report No. : FR952702A

3.10 Antenna Requirements
3.10.1 Standard Applicable
         If directional gain of transmitting antennas is greater than 6dBi, the power shall be reduced by the
         same level in dB comparing to gain minus 6dBi. The use of a permanently attached antenna or of an
         antenna that uses a unique coupling to the intentional radiator shall be considered sufficient to
         comply with the rule.


3.10.2 Antenna Anti-Replacement Construction
         An embedded-in antenna design is used.


3.10.3 Antenna Gain
         The antenna peak gain of EUT is less than 6 dBi. Therefore, it is not necessary to reduce maximum
         peak output power limit.




Sporton International (Kunshan) Inc.                                         Page Number         : 61 of 63
TEL : +86-512-57900158                                                       Report Issued Date : Aug. 05, 2019
FAX : +86-512-57900958                                                       Report Version      : Rev. 01
FCC ID: 2AJOTTA-1187                                                  Report Template No.: BU5-FR15CBT Version 2.0


                          FCC RF Test Report                                                                   Report No. : FR952702A



            4         List of Measuring Equipment
                                                                                   Calibration
   Instrument         Manufacturer     Model No.   Serial No.   Characteristics                    Test Date       Due Date         Remark
                                                                                      Date
                                                                                          Jun. 07, 2019~                           Conducted
Spectrum Analyzer         R&S           FSV40       101040       10Hz~40GHz       Aug. 07, 2018          Aug. 06, 2019
                                                                                           Jun. 18, 2019                           (TH01-KS)
                                                                                          Jun. 07, 2019~                           Conducted
  Power Senor            Anritsu       MA2411B      0917070  300MHz~40GHz Jan. 14, 2019                  Jan. 13, 2020
                                                                                           Jun. 18, 2019                           (TH01-KS)
                                                                                          Jun. 07, 2019~                           Conducted
  Power Meter            Anritsu       ML2495A      1005002 50MHz Bandwidth Jan. 14, 2019
                                                                                           Jun. 18, 2019 Jan. 13, 2020             (TH01-KS)
                                                   MY564000 3Hz~8.5GHz;Max                                                          Radiation
EMI Test Receiver       Keysight        N9038A                              Oct. 12, 2018 Jun. 18, 2019 Oct. 11, 2019
                                                       23        30dBm                                                            (03CH06-KS)
 EXA Spectrum                                      MY574710                                                                         Radiation
                        Keysight        N9010B                   10Hz-44GHz       Jun. 25, 2018   Jun. 18, 2019   Jun. 24, 2019
   Analyzer                                           84                                                                          (03CH06-KS)
                                                                                                                                  Radiation
  Loop Antenna            R&S          HFH2-Z2      100321       9kHz~30MHz       Oct. 19, 2018   Jun. 18, 2019   Oct. 18, 2019
                                                                                                                                (03CH06-KS)
                                                                                                                                  Radiation
  Bilog Antenna          TeseQ         CBL6111D     44483        30MHz-1GHz       Dec. 28, 2018 Jun. 18, 2019     Dec. 27, 2019
                                                                                                                                (03CH06-KS)
Double Ridge Horn                                                                                                                 Radiation
                  ETS-Lindgren             3117     75957       1GHz~18GHz        Oct. 20, 2018   Jun. 18, 2019   Oct. 19, 2019
    Antenna                                                                                                                     (03CH06-KS)
                                                                                                                                  Radiation
 SHF-EHF Horn          Com-power        AH-840      101070      18GHz~40GHz       Jan. 05, 2019   Jun. 18, 2019   Jan. 04, 2020
                                                                                                                                (03CH06-KS)
                                                                                                                                  Radiation
    Amplifier          SONOMA            310N       187289       9KHz ~1GHZ       Aug. 06, 2018 Jun. 18, 2019     Aug. 05, 2019
                                                                                                                                (03CH06-KS)
                                                                                                                                  Radiation
    Amplifier            MITEQ       TTA1840-35-HG 2014749        18~40GHz        Jan. 14, 2019   Jun. 18, 2019   Jan. 13, 2020
                                                                                                                                (03CH06-KS)
                                     AMF-7D-001018                                                                                Radiation
high gain Amplifier      MITEQ                      2025788   1Ghz-18Ghz   Apr. 17, 2019          Jun. 18, 2019   Apr. 16, 2020
                                       00-30-10P                                                                                (03CH06-KS)
                                                   MY532702                                                                       Radiation
    Amplifier           Keysight        83017A              500MHz~26.5GHz Apr. 15, 2019          Jun. 18, 2019   Apr. 14, 2020
                                                       03                                                                       (03CH06-KS)
                                                   F1040900                                                                       Radiation
AC Power Source         Chroma           61601                   N/A           NCR                Jun. 18, 2019       NCR
                                                       04                                                                       (03CH06-KS)
                                                                                                                                  Radiation
    Turn Table         ChamPro         EM 1000-T   060762-T      0~360 degree         NCR         Jun. 18, 2019       NCR
                                                                                                                                (03CH06-KS)
                                                                                                                                  Radiation
  Antenna Mast         ChamPro         EM 1000-A   060762-A        1 m~4 m            NCR         Jun. 18, 2019       NCR
                                                                                                                                (03CH06-KS)
                                                                                                                                  Conduction
  EMI Receiver            R&S            ESCI7      100768       9kHz~7GHz;       Apr. 16, 2019   Jun. 19, 2019   Apr. 15, 2020
                                                                                                                                  (CO01-KS)
                                                                                                                                  Conduction
    AC LISN             MessTec         AN3016      060103       9kHz~30MHz       Oct. 12, 2018   Jun. 19, 2019   Oct. 11, 2019
                                                                                                                                  (CO01-KS)
     AC LISN
                                                                                                                                  Conduction
   (for auxiliary       MessTec         AN3016      060105       9kHz~30MHz       Nov. 19, 2018 Jun. 19, 2019     Nov. 18, 2019
                                                                                                                                  (CO01-KS)
    equipment)
                                                   ABP00000     AC 0V~300V,                                                       Conduction
AC Power Source         Chroma           61602                                    Oct. 12, 2018   Jun. 19, 2019   Oct. 11, 2019
                                                     0811       45Hz~1000Hz                                                       (CO01-KS)
            NCR: No Calibration Required




            Sporton International (Kunshan) Inc.                                                    Page Number         : 62 of 63
            TEL : +86-512-57900158                                                                  Report Issued Date : Aug. 05, 2019
            FAX : +86-512-57900958                                                                  Report Version      : Rev. 01
            FCC ID: 2AJOTTA-1187                                                             Report Template No.: BU5-FR15CBT Version 2.0


            FCC RF Test Report                                                    Report No. : FR952702A



5      Uncertainty of Evaluation
       The measurement uncertainties shown below were calculated in accordance with the requirements of
       ANSI 63.10-2013. All the measurement uncertainty value were shown with a coverage K=2 to indicate
       95% level of confidence. The measurement data show herein meets or exceeds the CISPR
       measurement uncertainty values specified in CISPR 16-4-2 and can be compared directly to specified
       limit to determine compliance.


       Uncertainty of Conducted Emission Measurement (150 kHz ~ 30 MHz)
        Measuring Uncertainty for a Level of Confidence
                                                                                 2.9dB
                     of 95% (U = 2Uc(y))


       Uncertainty of Radiated Emission Measurement (30 MHz ~ 1000 MHz)
        Measuring Uncertainty for a Level of Confidence
                                                                                 5.0dB
                     of 95% (U = 2Uc(y))


       Uncertainty of Radiated Emission Measurement (1000 MHz ~ 18000 MHz)
        Measuring Uncertainty for a Level of Confidence
                                                                                 5.0dB
                     of 95% (U = 2Uc(y))


       Uncertainty of Radiated Emission Measurement (18000 MHz ~ 40000 MHz)
        Measuring Uncertainty for a Level of Confidence
                                                                                 5.0dB
                     of 95% (U = 2Uc(y))




Sporton International (Kunshan) Inc.                                       Page Number         : 63 of 63
TEL : +86-512-57900158                                                     Report Issued Date : Aug. 05, 2019
FAX : +86-512-57900958                                                     Report Version      : Rev. 01
FCC ID: 2AJOTTA-1187                                                Report Template No.: BU5-FR15CBT Version 2.0


            FCC RF Test Report                            Report No. : FR952702A



Appendix A. AC Conducted Emission Test Results
                                              Temperature :          25.3~26.2℃
          Test Engineer : Amos Zhang
                                              Relative Humidity : 38~40%
          Test Voltage :      120Vac / 60Hz   Phase :                Line




Sporton International (Kunshan) Inc.              Page Number        : A1 of A2
TEL : +86-512-57900158                            Report Issued Date : Aug. 05, 2019
FAX : +86-512-57900958                            Report Version     : Rev. 01
FCC ID: 2AJOTTA-1187


            FCC RF Test Report                            Report No. : FR952702A



                                              Temperature :          25.3~26.2℃
          Test Engineer : Amos Zhang
                                              Relative Humidity : 38~40%
          Test Voltage :      120Vac / 60Hz   Phase :                Neutral




Sporton International (Kunshan) Inc.              Page Number        : A2 of A2
TEL : +86-512-57900158                            Report Issued Date : Aug. 05, 2019
FAX : +86-512-57900958                            Report Version     : Rev. 01
FCC ID: 2AJOTTA-1187


                     FCC RF Test Report                                                      Report No. : FR952702A



         Appendix B. Radiated Spurious Emission

                                                      2.4GHz 2400~2483.5MHz
                                                        BT (Band Edge @ 3m)

  BT        Note Frequency            Level     Over      Limit   Read    Antenna Cable Preamp Ant             Table Peak Pol.
                                              Limit     Line      Level   Factor    Loss     Factor Pos      Pos Avg.
                      ( MHz )      ( dBμV/m ) ( dB ) ( dBμV/m ) ( dBμV ) ( dB/m )   ( dB )   ( dB ) ( cm ) ( deg ) (P/A) (H/V)
                      2364.86         53.54     -20.46      74    47.53    32.07    5.36      31.42     389      93      P   H
                      2364.86         28.78     -25.22      54      -         -       -         -         -       -      A   H
              *         2402          99.74       -         -     93.74       32    5.41      31.41     389      93      P   H
  BT
              *         2402          74.98       -         -       -         -       -         -         -       -      A   H
 CH00
                      2336.39         53.22     -20.78      74    47.25    32.1     5.31      31.44     400      48      P   V
2402MHz
                      2336.39         28.46     -25.54      54      -         -       -         -         -       -      A   V
              *         2402          100.11      -         -     94.11       32    5.41      31.41     400      48      P   V
              *         2402          75.35       -         -       -         -       -         -         -       -      A   V
                      2483.55         58.36     -15.64      74    52.03    32.27    5.45      31.39     100      107     P   H
                      2483.55          33.6     -20.4       54      -         -       -         -         -       -      A   H
              *         2480          103.96      -         -     97.63    32.27    5.45      31.39     100      107     P   H
  BT
              *         2480           79.2       -         -       -         -       -         -         -       -      A   H
 CH 78
                      2483.55         57.33     -16.67      74     51      32.27    5.45      31.39     372      51      P   V
2480MHz
                      2483.55         32.57     -21.43      54      -         -       -         -         -       -      A   V
              *         2480          103.89      -         -     97.56    32.27    5.45      31.39     372      51      P   V
              *         2480          79.13       -         -       -         -       -         -         -       -      A   V

           1. No other spurious found.
Remark
           2. All results are PASS against Peak and Average limit line.




         Sporton International (Kunshan) Inc.                                       Page Number        : B1 of B5
         TEL : +86-512-57900158                                                     Report Issued Date : Aug. 05, 2019
         FAX : +86-512-57900958                                                     Report Version     : Rev. 01
         FCC ID: 2AJOTTA-1187


                     FCC RF Test Report                                                      Report No. : FR952702A


                                                    2.4GHz 2400~2483.5MHz
                                                         BT (Harmonic @ 3m)
  BT        Note Frequency            Level     Over       Limit   Read    Antenna Cable Preamp Ant            Table Peak Pol.
                                              Limit     Line      Level   Factor    Loss     Factor Pos      Pos Avg.
                      ( MHz )      ( dBμV/m ) ( dB ) ( dBμV/m ) ( dBμV ) ( dB/m )   ( dB )   ( dB ) ( cm ) ( deg ) (P/A) (H/V)
  BT
                        4806          37.47     -36.53      74     56.91    34.2    7.95      61.59     100      360     P   H
 CH 00
2402MHz                 4806          39.19     -34.81      74     58.63    34.2    7.95      61.59     100      360     P   V

                        4884          38.32     -35.68      74     57.78    34.13   8.02      61.61     100      187     P   H
  BT
                        7320          39.98     -34.02      74     55.87    36.6    9.85      62.34     100      187     P   H
 CH 39
                        4884          39.74     -34.26      74     59.2     34.13   8.02      61.61     100      360     P   V
2441MHz
                        7320          39.97     -34.03      74     55.86    36.6    9.85      62.34     100      360     P   V
                        4962          37.65     -36.35      74     57.09    34.1     8.1      61.64     100      360     P   H
  BT
                        7440          37.17     -36.83      74     53.17    36.4     10       62.4      100      360     P   H
 CH 78
                        4962          37.99     -36.01      74     57.43    34.1     8.1      61.64     100      360     P   V
2480MHz
                        7440          39.07     -34.93      74     55.07    36.4     10       62.4      100      360     P   V

           1. No other spurious found.
Remark
           2. All results are PASS against Peak and Average limit line.




         Sporton International (Kunshan) Inc.                                       Page Number        : B2 of B5
         TEL : +86-512-57900158                                                     Report Issued Date : Aug. 05, 2019
         FAX : +86-512-57900958                                                     Report Version     : Rev. 01
         FCC ID: 2AJOTTA-1187


                   FCC RF Test Report                                                     Report No. : FR952702A



                                                   Emission below 1GHz
                                                       2.4GHz BT (LF)

 BT         Note Frequency           Level    Over       Limit   Read    Antenna Cable Preamp Ant          Table Peak Pol.
                                             Limit     Line     Level Factor Loss Factor Pos Pos Avg.
                      ( MHz )     ( dBμV/m ) ( dB ) ( dBμV/m ) (dBμV) ( dB/m ) ( dB ) ( dB ) ( cm ) ( deg ) (P/A) (H/V)
                      105.66         16.06    -27.44     43.5    30.67    17.27   1.04    32.92       -       -        P   H
                      188.11         23.01    -20.49     43.5    39.06    15.42   1.45    32.92       -       -        P   H
                      278.32         20.04    -25.96      46     32.27    18.99   1.79    33.01       -       -        P   H
                      390.84         18.74    -27.26      46     28.28    21.48   2.09     33.11      -       -        P   H
                      580.96         23.13    -22.87      46     29.51    24.39   2.56    33.33       -       -        P   H
2.4GHz
                       883.6         25.81    -20.19      46     28.6     26.43   3.19    32.41     100     360        P   H
 BT
                       47.46         35.55    -4.45       40     52.74    15.1    0.67    32.96     100       0        P   V
  LF
                      106.63         18.16    -25.34     43.5    32.71    17.33   1.05    32.93       -       -        P   V
                      210.42         21.67    -21.83     43.5    37.58    15.44   1.58    32.93       -       -        P   V
                      430.61         20.47    -25.53      46     29.22    22.25   2.19    33.19       -       -        P   V
                      639.16          22.9    -23.1       46     28.78    24.72   2.71    33.31       -       -        P   V
                      949.56         28.22    -17.78      46     29.58     27     3.35    31.71       -       -        P   V

           1. No other spurious found.
Remark
           2. All results are PASS against limit line.




       Sporton International (Kunshan) Inc.                                       Page Number        : B3 of B5
       TEL : +86-512-57900158                                                     Report Issued Date : Aug. 05, 2019
       FAX : +86-512-57900958                                                     Report Version     : Rev. 01
       FCC ID: 2AJOTTA-1187


            FCC RF Test Report                                                 Report No. : FR952702A



                                                Note symbol


          Fundamental Frequency which can be ignored. However, the level of any unwanted emissions
   *
          shall not exceed the level of the fundamental frequency.
   !      Test result is over limit line.
 P/A      Peak or Average
 H/V      Horizontal or Vertical




Sporton International (Kunshan) Inc.                                   Page Number        : B4 of B5
TEL : +86-512-57900158                                                 Report Issued Date : Aug. 05, 2019
FAX : +86-512-57900958                                                 Report Version     : Rev. 01
FCC ID: 2AJOTTA-1187


                      FCC RF Test Report                                                      Report No. : FR952702A



                      A calculation example for radiated spurious emission is shown as below:


 WIFI       Note Frequency             Level     Over     Limit   Read    Antenna Cable Preamp           Ant     Table Peak Pol.
 Ant.                                          Limit     Line      Level   Factor    Loss     Factor Pos      Pos Avg.
 1+2                   ( MHz )      ( dBμV/m ) ( dB ) ( dBμV/m ) ( dBμV ) ( dB/m )   ( dB )   ( dB ) ( cm ) ( deg ) (P/A) (H/V)
802.11b                  2390          55.45     -18.55    74     54.51    32.22     4.58      35.86     103      308     P   H
 CH 01
2412MHz                  2390          43.54     -10.46    54     42.6     32.22     4.58      35.86     103      308     A   H



          1. Level(dBμV/m) =
          Antenna Factor(dB/m) + Cable Loss(dB) + Read Level(dBμV) - Preamp Factor(dB)
          2. Over Limit(dB) = Level(dBμV/m) – Limit Line(dBμV/m)


          For Peak Limit @ 2390MHz:
          1. Level(dBμV/m)
          = Antenna Factor(dB/m) + Cable Loss(dB) + Read Level(dBμV) - Preamp Factor(dB)
          = 32.22(dB/m) + 4.58(dB) + 54.51(dBμV) – 35.86 (dB)
          = 55.45 (dBμV/m)
          2. Over Limit(dB)
          = Level(dBμV/m) – Limit Line(dBμV/m)
          = 55.45(dBμV/m) – 74(dBμV/m)
          = -18.55(dB)


          For Average Limit @ 2390MHz:
          1. Level(dBμV/m)
          = Antenna Factor(dB/m) + Cable Loss(dB) + Read Level(dBμV) - Preamp Factor(dB)
          = 32.22(dB/m) + 4.58(dB) + 42.6(dBμV) – 35.86 (dB)
          = 43.54 (dBμV/m)
          2. Over Limit(dB)
          = Level(dBμV/m) – Limit Line(dBμV/m)
          = 43.54(dBμV/m) – 54(dBμV/m)
          = -10.46(dB)


          Both peak and average measured complies with the limit line, so test result is “PASS”.




          Sporton International (Kunshan) Inc.                                       Page Number        : B5 of B5
          TEL : +86-512-57900158                                                     Report Issued Date : Aug. 05, 2019
          FAX : +86-512-57900958                                                     Report Version     : Rev. 01
          FCC ID: 2AJOTTA-1187


              FCC RF Test Report                                                   Report No. : FR952702A



Appendix C. Duty Cycle Plots
                                   DH5 on time (One Pulse) Plot on Channel 39




                                 DH5 on time (Count Pulses) Plot on Channel 39




                      Note:
                      1. Worst case Duty cycle = on time/100 milliseconds = 2 * 2.89 / 100 = 5.78 %
                      2. Worst case Duty cycle correction factor = 20*log(Duty cycle) = -24.76 dB
                      3. DH5 has the highest duty cycle worst case and is reported.




Sporton International (Kunshan) Inc.                                         Page Number          : C1 of C1
TEL : +86-512-57900158                                                       Report Issued Date   : Aug. 05, 2019
FAX : +86-512-57900958                                                       Report Version       : Rev. 01
FCC ID: 2AJOTTA-1187



Document Created: 2019-08-08 17:20:48
Document Modified: 2019-08-08 17:20:48

© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC