RF exposure information

FCC ID: VW7SR616A

RF Exposure Info

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FCCID_3612005

       Compliance Certification Services (Shenzhen) Inc.
       Report No: C170830Z02-RP1_MPE         FCC ID: VW7SR616A          Date of Issue: September 29, 2017


                                          MPE Report

Exposure category: General population/uncontrolled environment
EUT Type: Production Unit
Device Type: Mobile Device
Refer Standard: KDB 447498 D01 General RF Exposure Guidance v06
                FCC Part 2 §2.1091
1. Evaluation method
Systems operating under the provisions of FCC 47 CFR section shall be operated in a manner that
ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s
guidelines.
In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as mobile
device whereby a distance of 0.2m normally can be maintained between the user and the device, and
below RF Permissible Exposure limit shall comply with.
In accordance with KDB447498D01 for Simultaneous transmission MPE test exclusion applies when
the sum of the MPE ratios for all simultaneous transmitting antennas incorporated in a host device,
based on the calculated/estimated, numerically modeled or measured field strengths or power density, is
≤ 1.0. The MPE ratio of each antenna is determined at the minimum test separation distance required by
the operating configurations and exposure conditions of the host device, according to the ratio of field
strengths or power density to MPE limit, at the test frequency. Either the maximum peak or spatially
averaged results from measurements or numerical simulations may be used to determine the MPE ratios.
Spatial averaging does not apply when MPE is estimated using simple calculations based on far-field
plane-wave equivalent conditions. The antenna installation and operating requirements for the host
device must meet the minimum test separation distances required by all antennas, in both standalone
and simultaneous transmission operations, to satisfy compliance.

2. Limits for General Population/Uncontrolled Exposure




3. Calculation Method
Predication of MPE limit at a given distance
Equation from page 18 of OET Bulletin 65, Edition 97-01
S=PG/4πR²
Where: S=power density


        Compliance Certification Services (Shenzhen) Inc.
       Report No: C170830Z02-RP1_MPE          FCC ID: VW7SR616A            Date of Issue: September 29, 2017

        P=power input to antenna
        G=power gain of the antenna in the direction of interest relative to an isotropic radiator
        R=distance to the center of radiation of the antenna
From the EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the
maximum gain of the used as follows, the RF power density can be obtained.
    Frequency           Antenna type and antenna             Internal               Maximum antenna
       Band                     number                    Identification                 gain
                                                            Antenna 0                     2.0dBi
     2.4GHz                  WLAN Antenna
                                                            Antenna 1                     2.0dBi
                                                            Antenna 2                     3.0dBi
      5GHz                   WLAN Antenna                   Antenna 3                     3.0dBi
                                                            Antenna 4                     3.0dBi



4. Estimation Result

4.1 Conducted Power Results
                                                                               Conducted Output Power
       Antenna                    Mode              Frequency(MHz)
                                                                                       (dBm)
                                                           2412                           15.97
                              IEEE 802.11b                 2437                           16.14
                                                           2462                           15.82
                                                           2412                           15.67
                              IEEE 802.11g                 2437                           15.76
                                                           2462                           15.64
       Antenna 0
                                                           2412                           14.92
                          IEEE 802.11n HT20                2437                           16.99
                                                           2462                           14.91
                                                           2422                           14.00
                          IEEE 802.11n HT40                2437                           16.47
                                                           2452                           13.93


                                                                               Conducted Output Power
       Antenna                    Mode              Frequency(MHz)
                                                                                       (dBm)
                                                           2412                           16.05
                              IEEE 802.11b                 2437                           16.28
                                                           2462                           15.80
                                                           2412                           15.72
       Antenna 1
                              IEEE 802.11g                 2437                           15.56
                                                           2462                           15.73
                                                           2412                           15.07
                          IEEE 802.11n HT20
                                                           2437                           16.80


Compliance Certification Services (Shenzhen) Inc.
Report No: C170830Z02-RP1_MPE     FCC ID: VW7SR616A    Date of Issue: September 29, 2017

                                            2462                      14.97
                                            2422                      13.97
                IEEE 802.11n HT40           2437                      16.27
                                            2452                      13.95



                                  5GHz WIFI
                                                          Conducted Output Power
Antenna                Mode           Frequency(MHz)
                                                                     (dBm)
                                            5180                      15.94
                                            5200                      16.12
                                            5240                      16.39
                                            5260                      19.04
                                            5300                      19.18
                                            5320                      19.12
                   IEEE 802.11a
                                            5500                      18.18
                                            5580                      18.33
                                            5700                      18.05
                                            5745                      18.55
                                            5785                      18.42
                                            5825                      18.38
                                            5180                       7.41
                                            5200                       7.40
                                            5240                       7.34
                                            5260                      12.61
Antenna 0                                   5300                      12.46
                                            5320                      12.42
                IEEE 802.11n HT20
                                            5500                      16.67
                                            5580                      16.28
                                            5700                      16.40
                                            5745                      16.58
                                            5785                      16.60
                                            5825                      16.33
                                            5190                      10.52
                                            5230                      10.46
                                            5270                      13.83
                                            5310                      14.03
                IEEE 802.11n HT40           5510                      16.69
                                            5550                      16.67
                                            5670                      16.73
                                            5755                      16.74
                                            5795                      16.77


Compliance Certification Services (Shenzhen) Inc.
Report No: C170830Z02-RP1_MPE     FCC ID: VW7SR616A    Date of Issue: September 29, 2017

                                            5210                      13.10
                                            5290                      15.62
                 IEEE 802.11ac 80
                                            5530                      16.42
                                            5775                      16.36


                                                          Conducted Output Power
Antenna                Mode           Frequency(MHz)
                                                                     (dBm)
                                            5180                      16.13
                                            5200                      16.09
                                            5240                      16.30
                                            5260                      19.09
                                            5300                      18.91
                                            5320                      18.81
                   IEEE 802.11a
                                            5500                      18.05
                                            5580                      18.23
                                            5700                      18.05
                                            5745                      18.61
                                            5785                      18.39
                                            5825                      18.42
                                            5180                       7.88
                                            5200                       7.58
                                            5240                       7.61
                                            5260                      12.84
                                            5300                      12.43
Antenna 1                                   5320                      12.41
                IEEE 802.11n HT20
                                            5500                      16.39
                                            5580                      16.37
                                            5700                      16.10
                                            5745                      16.55
                                            5785                      16.48
                                            5825                      16.33
                                            5190                      10.23
                                            5230                      10.04
                                            5270                      14.14
                                            5310                      13.94
                IEEE 802.11n HT40           5510                      16.96
                                            5550                      16.94
                                            5670                      16.61
                                            5755                      16.64
                                            5795                      16.75
                                            5210                      13.23
                 IEEE 802.11ac 80
                                            5290                      15.54


Compliance Certification Services (Shenzhen) Inc.
Report No: C170830Z02-RP1_MPE     FCC ID: VW7SR616A    Date of Issue: September 29, 2017

                                            5530                      16.45
                                            5775                      16.72


                                                          Conducted Output Power
Antenna                Mode           Frequency(MHz)
                                                                     (dBm)
                                            5180                      15.55
                                            5200                      15.56
                                            5240                      15.68
                                            5260                      18.81
                                            5300                      18.54
                                            5320                      18.67
                   IEEE 802.11a
                                            5500                      18.44
                                            5580                      18.40
                                            5700                      18.35
                                            5745                      18.74
                                            5785                      18.74
                                            5825                      18.65
                                            5180                       8.00
                                            5200                       8.04
                                            5240                       7.96
                                            5260                      16.66
                                            5300                      16.60
                                            5320                      16.55
                IEEE 802.11n HT20
Antenna 2                                   5500                      15.80
                                            5580                      15.85
                                            5700                      15.81
                                            5745                      16.35
                                            5785                      16.14
                                            5825                      16.25
                                            5190                      10.68
                                            5230                      10.86
                                            5270                      15.96
                                            5310                      15.94
                IEEE 802.11n HT40           5510                      14.53
                                            5550                      14.12
                                            5670                      14.13
                                            5755                      14.18
                                            5795                      14.12
                                            5210                      13.05
                                            5290                      14.01
                 IEEE 802.11ac 80
                                            5530                      14.22
                                            5775                      14.15


       Compliance Certification Services (Shenzhen) Inc.
      Report No: C170830Z02-RP1_MPE          FCC ID: VW7SR616A           Date of Issue: September 29, 2017

4.2 Manufacturing tolerance
                                           2.4GHz WIFI
                                                  IEEE 802.11 b
        Frequency                          Antenna 0                                 Antenna 1
          (MHz)                  2412            2437        2462         2412          2437           2462
  Maximum Output Power
                                 15.97        16.14         15.82        16.05         16.28           15.80
        (dBm)


                                                  IEEE 802.11 g
        Frequency                          Antenna 0                                 Antenna 1
          (MHz)                  2412            2437        2462         2412          2437           2462
  Maximum Output Power
                                 15.67        15.76         15.64        15.72         15.56           15.73
        (dBm)


                                            IEEE 802.11 n HT20
        Frequency                          Antenna 0                                 Antenna 1
          (MHz)                  2412            2437        2462         2412          2437           2462
  Maximum Output Power
                                 14.92        16.99         14.91        15.07         16.80           14.97
        (dBm)


                                            IEEE 802.11 n HT40
        Frequency                          Antenna 0                                 Antenna 1
          (MHz)                  2412            2437        2462         2412          2437           2462
  Maximum Output Power
                                 14.00        16.47         13.93        13.97         16.27           13.95
        (dBm)


                                            5GHz WIFI
                                                  IEEE 802.11 a
     Frequency                Antenna 2                     Antenna 3                      Antenna 4
       (MHz)         5180       5200      5240       5180     5200      5240       5180        5200      5240
 Maximum Output
     Power          15.94       16.12     16.39     16.13    16.09      16.30     15.55        15.56    15.68
     (dBm)


     Frequency                Antenna 2                     Antenna 3                      Antenna 4
       (MHz)         5260       5300      5320       5260     5300      5320       5260        5300      5320
 Maximum Output
     Power          19.04       19.18     19.12     19.09    18.91      18.81     18.81        18.54    18.67
     (dBm)


    Compliance Certification Services (Shenzhen) Inc.
    Report No: C170830Z02-RP1_MPE        FCC ID: VW7SR616A         Date of Issue: September 29, 2017


  Frequency               Antenna 2                   Antenna 3                      Antenna 4
    (MHz)         5500      5580      5700    5500      5580      5700       5500      5580       5700
Maximum Output
    Power         18.18     18.33     18.05   18.05    18.23      18.05     18.44      18.40      18.35
    (dBm)


  Frequency               Antenna 2                   Antenna 3                      Antenna 4
    (MHz)         5745      5785      5825    5745      5785      5825       5745      5785       5825
Maximum Output
    Power         18.55     18.42     18.38   18.61    18.39      18.42     18.74      18.74      18.65
    (dBm)



                                        IEEE 802.11n HT20
  Frequency               Antenna 2                   Antenna 3                      Antenna 4
    (MHz)         5180      5200      5240    5180      5200      5240       5180      5200       5240
Maximum Output
    Power         7.41       7.40     7.34    7.88      7.58      7.61       8.00       8.04       7.96
    (dBm)


  Frequency               Antenna 2                   Antenna 3                      Antenna 4
    (MHz)         5260      5300      5320    5260      5300      5320       5260      5300       5320
Maximum Output
    Power         12.61     12.46     12.42   12.81    12.43      12.41     16.66      16.60      16.55
    (dBm)


  Frequency               Antenna 2                   Antenna 3                      Antenna 4
    (MHz)         5500      5580      5700    5500      5580      5700       5500      5580       5700
Maximum Output
    Power         16.67     16.28     16.40   16.39    16.37      16.10     15.80      15.85      15.81
    (dBm)


  Frequency               Antenna 2                   Antenna 3                      Antenna 4
    (MHz)         5745      5785      5825    5745      5785      5825       5745      5785       5825
Maximum Output
    Power         16.58     16.60     16.33   16.55    16.48      16.33     16.35      16.14      16.25
    (dBm)


    Compliance Certification Services (Shenzhen) Inc.
    Report No: C170830Z02-RP1_MPE        FCC ID: VW7SR616A         Date of Issue: September 29, 2017

                                        IEEE 802.11n HT40
  Frequency               Antenna 2                   Antenna 3                      Antenna 4
    (MHz)         5190       ---      5230    5190       ---      5230       5190        ---      5230
Maximum Output
    Power         10.52      ---      10.46   10.23      ---      10.04     10.68        ---      10.86
    (dBm)


  Frequency               Antenna 2                   Antenna 3                      Antenna 4
    (MHz)         5270       ---      5310    5270       ---      5310       5270        ---      5310
Maximum Output
    Power         13.83      ---      14.03   14.14      ---      13.94     15.96        ---      10.94
    (dBm)


  Frequency               Antenna 2                   Antenna 3                      Antenna 4
    (MHz)         5510      5550      5670    5510      5550      5670       5510      5550       5670
Maximum Output
    Power         16.69     16.67     16.73   16.96    16.94      16.61     14.53      14.12      14.13
    (dBm)


  Frequency               Antenna 2                   Antenna 3                      Antenna 4
    (MHz)         5755       ---      5795    5755       ---      5795       5755        ---      5795
Maximum Output
    Power         16.74      ---      16.77   16.64      ---      16.75     14.18        ---      14.12
    (dBm)



                                         IEEE 802.11ac 80
  Frequency               Antenna 2                   Antenna 3                      Antenna 4
    (MHz)         5210       ---      5290    5210       ---      5290       5210        ---      5290
Maximum Output
    Power         13.10      ---      15.62   13.23      ---      15.54     13.05        ---      14.01
    (dBm)


  Frequency               Antenna 2                   Antenna 3                      Antenna 4
    (MHz)         5530       ---      5775    5530       ---      5775       5530        ---      5775
Maximum Output
    Power         16.42      ---      16.36   16.45      ---      16.72     14.22        ---      14.15
    (dBm)


             Compliance Certification Services (Shenzhen) Inc.
           Report No: C170830Z02-RP1_MPE    FCC ID: VW7SR616A      Date of Issue: September 29, 2017

    4.3 Measurement Results

    4.3.1 Standalone MPE
                                            2.4GWLAN
    Antenna 0
                                            Antenna   Antenna
                          Output power                           Duty        MPE          MPE Limits
       Mode                                  Gain       Gain
                                                                 Cycle      (W/m2)         (W/m2)
                       (dBm)       (W)       (dBi)    (linear)
   IEEE 802.11 b       16.14      41.1150   2.0000    1.5849     100%        0.1297          5.3478
   IEEE 802.11 g       15.76      37.6704   2.0000    1.5849     100%        0.1188          5.3478
 IEEE 802.11 n HT20    16.99      50.0035   2.0000    1.5849     100%        0.1577          5.3478
 IEEE 802.11 n HT40    16.47      44.3609   2.0000    1.5849     100%        0.1399          5.3478

    Antenna 1
                                            Antenna   Antenna
                          Output power                           Duty        MPE          MPE Limits
       Mode                                  Gain       Gain
                                                                 Cycle      (W/m2)         (W/m2)
                       (dBm)       (W)       (dBi)    (linear)
   IEEE 802.11 b       16.28      42.4620   2.0000    1.5849     100%        0.1340          5.3478
   IEEE 802.11 g       15.73      37.4111   2.0000    1.5849     100%        0.1180          5.3478
 IEEE 802.11 n HT20    16.80      47.8630   2.0000    1.5849     100%        0.1510          5.3478
 IEEE 802.11 n HT40    16.27      42.3643   2.0000    1.5849     100%        0.1336          5.3478

                                             5GWLAN
    Antenna 2
                                            Antenna   Antenna
                        Output power                             Duty         MPE          MPE Limits
      Mode                                   Gain       Gain
                                                                 Cycle       (W/m2)         (W/m2)
                      (dBm)       (W)        (dBi)    (linear)
  IEEE 802.11 a       19.18      0.0828     3.0000     1.9953    100%        0.3288           9.0112
IEEE 802.11 n HT20    16.67      0.0465     3.0000     1.9953    100%        0.1845           9.0112
IEEE 802.11 n HT40    16.77      0.0475     3.0000     1.9953    100%        0.1888           9.0112
IEEE 802.11 ac 80     16.42      0.0439     3.0000     1.9953    100%        0.1742           9.0112

    Antenna 3
                                            Antenna   Antenna
                        Output power                             Duty         MPE          MPE Limits
      Mode                                   Gain       Gain
                                                                 Cycle       (W/m2)         (W/m2)
                      (dBm)       (W)        (dBi)    (linear)
  IEEE 802.11 a       19.09      0.0811     3.0000     1.9953    100%        0.3221           9.0112
IEEE 802.11 n HT20    16.55      0.0452     3.0000     1.9953    100%        0.1795           9.0112
IEEE 802.11 n HT40    16.96      0.0497     3.0000     1.9953    100%        0.1972           9.0112
IEEE 802.11 ac 80     16.72      0.0470     3.0000     1.9953    100%        0.1866           9.0112


             Compliance Certification Services (Shenzhen) Inc.
             Report No: C170830Z02-RP1_MPE                    FCC ID: VW7SR616A                  Date of Issue: September 29, 2017

    Antenna 4
                                                             Antenna          Antenna
                                  Output power                                                 Duty           MPE           MPE Limits
      Mode                                                    Gain              Gain
                                                                                               Cycle         (W/m2)          (W/m2)
                             (dBm)            (W)             (dBi)           (linear)
  IEEE 802.11 a              18.81        0.0760              3.0000           1.9953          100%          0.3020              9.0112
IEEE 802.11 n HT20           16.66        0.0463              3.0000           1.9953          100%          0.1841              9.0112
IEEE 802.11 n HT40           15.96        0.0394              3.0000           1.9953          100%          0.1567              9.0112
IEEE 802.11 ac 80            14.22        0.0264              3.0000           1.9953          100%          0.1049              9.0112

    Remark:
                      1.    Maximum average power including tune-up tolerance;
                      2.    MPE use distance is 20cm from manufacturer declaration of user manual.

    According to KDB447498 for Transmitters used in mobile exposure conditions for simultaneous
    transmission operations;
    ∑ of MPE ratios ≤ 1.0

    We first evaluate dual mode WLAN simultaneous transmission and later evaluate dual mode WLAN
    simultaneous transmission;

    Antenna 0 and Antenna 1 for 2.4GWLAN
                                                     MPE Ratio                 MPE Ratio
     Band                    Mode                                                                      ∑ MPE ratios      Limit       Results
                                                           Antenna 0               Antenna 1

                        IEEE 802.11b                       0.0243                  0.0251                  N/A           1.000        Pass
                        IEEE 802.11g                       0.0222                  0.0221                  N/A           1.000        Pass
     2.4G
                     IEEE 802.11n HT20                     0.0295                  0.0282                  0.1           1.000        Pass
                     IEEE 802.11n HT40                     0.0262                  0.0250                  0.1           1.000        Pass

    Antenna 2, Antenna 3 and Antenna 4 for 5GWLAN
                                           MPE Ratio              MPE Ratio             MPE Ratio            ∑ MPE
     Band                  Mode                                                                                             Limit     Results
                                               Antenna 2               Antenna 3           Antenna 4          ratios
                     IEEE 802.11a              0.0365                  0.0357              0.0335                N/A        1.000         Pass
               IEEE 802.11n HT20               0.0205                  0.0199              0.0204                0.1        1.000         Pass
      5G
               IEEE 802.11n HT40               0.0210                  0.0219              0.0174                0.1        1.000         Pass
                IEEE 802.11ac 80               0.0193                  0.0207              0.0116                0.1        1.000         Pass


    Maximum MPE Ratios for 2.4GHz and 5GHz WLAN simultaneous transmission
     Maximum MPE              Maximum MPE
                                                            ∑ MPE ratios                       Limit                   Results
     Ratio2.4GHzWLAN          Ratio5GHzWLAN
            0.0577                   0.0608                        0.1                         1.000                    Pass


       Compliance Certification Services (Shenzhen) Inc.
       Report No: C170830Z02-RP1_MPE       FCC ID: VW7SR616A        Date of Issue: September 29, 2017

Conclusion
The measurement results comply with the FCC Limit per 47 CFR 2.1091 for the uncontrolled RF
Exposure of mobile device.


                 ---------------- END OF REPORT---------------



Document Created: 2017-10-19 11:50:48
Document Modified: 2017-10-19 11:50:48

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