MPE test report

FCC ID: UIDW31

RF Exposure Info

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         cas.   FCC RADIO EXPOSURE TEST REPORT                                           Report No. : FA842742—01




     FCC RADIO EXPOSURE TEST REPORT

                FCC ID              : UIDW31

                Equipment           : Wireless Router
                Brand Name          : ARRIS
                Model Name          : W31, W30

                Applicant           : ARRIS
                                       3871 Lakefield Drive Suite 300,Suwanee, Georgia,
                                       30024 United States
                Manufacturer        : ARRIS
                                       3871 Lakefield Drive Suite 300,Suwanee, Georgia,
                                       30024 United States

                Standard            : 47 CFR Part 21091

  The product was received on Jul. 18, 2018, and testing was started from Jul. 23, 2018 and completed
  on Dec. 26, 2018. We, SPORTON INTERNATIONAL INC. EMC & Wireless Communications Laboratory,
  would like to declare that the tested sample has been evaluated in accordance with the procedures
  given in 47 CFR Part 2.1091 and shown compliance with the applicable technical standards.

  The report must not be used by the client to claim product certification, approval, or endorsement by
  TAF or any agency of government.

  The test results in this variant report apply exclusively to the tested model / sample. Without written
  approval of SPORTON INTERNATIONAL INC. EMC & Wireless Communications Laboratory, the test
  report shall not be reproduced except in full.




                  "—Am                  s      afg 7x
                                     L*
                       Approved by: Sam Chen

          SPORTON INTERNATIONAL INC. EMC & Wireless Communications Laboratory
                            No. 52, Huaya 1st Rd., Guishan Dist., Taoyuan City, Taiwan (R.0.C.)

TEL : 886—3—656—9065                                                             Page Number      : 1 of 9
FAX : 886—3—656—9085                                                             Issued Date      : Jan. 07, 2019
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               FCC RADIO EXPOSURE TEST REPORT                                                                              Report No. : FA842742-01




                                                            Table of Contents
History of this test report .................................................................................................................................3
Summary of Test Result...................................................................................................................................4
1      General Description .............................................................................................................................5
1.1    EUT General Information .......................................................................................................................5
1.2    Table for Multiple Listing ........................................................................................................................5
1.3    Table for Class II Change.......................................................................................................................6
1.4    Testing Location .....................................................................................................................................7
2      Maximum Permissible Exposure ........................................................................................................8
2.1    Limit of Maximum Permissible Exposure ...............................................................................................8
2.2    MPE Calculation Method ........................................................................................................................8
2.3    Calculated Result and Limit....................................................................................................................9
Photographs of EUT v01




TEL : 886-3-656-9065                                                                                              Page Number          : 2 of 9
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            FCC RADIO EXPOSURE TEST REPORT                                 Report No. : FA842742-01




                                 History of this test report

   Report No.          Version                Description                                Issued Date

 FA842742-01              01              Initial issue of report                       Jan. 07, 2019




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            FCC RADIO EXPOSURE TEST REPORT                                           Report No. : FA842742-01




                                       Summary of Test Result

  Report       Ref Std.                                                       Result
                                             Test Items                                               Remark
  Clause        Clause                                                    (PASS/FAIL)

     2              -        Exposure evaluation                              PASS             -



Declaration of Conformity:
The test results with all measurement uncertainty excluded are presented in accordance with the regulation limits
or requirements declared by manufacturers.
Comments and Explanations:
The declared of product specification for EUT presented in the report are provided by the manufacturer, and the
manufacturer takes all the responsibilities for the accuracy of product specification.
Reviewed by: Sam Chen
Report Producer: Cindy Peng




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             FCC RADIO EXPOSURE TEST REPORT                                               Report No. : FA842742-01




1         General Description
1.1       EUT General Information
                                           RF General Information
                         Frequency       Operating
    Evaluation
                           Range         Frequency                         Modulation Type
      Mode
                           (MHz)           (MHz)
                                                         802.11b: DSSS (DBPSK, DQPSK, CCK)
                                                         802.11g/n: OFDM (BPSK, QPSK, 16QAM, 64QAM)
                                                         802.11ac: OFDM (BPSK, QPSK, 16QAM, 64QAM,
 2.4GHz WLAN           2400-2483.5    2412-2462
                                                                    256QAM, 1024QAM)
                                                         802.11ax: OFDMA (BPSK, QPSK, 16QAM, 64QAM,
                                                                    256QAM, 1024QAM)
                                                         802.11a/n: OFDM (BPSK, QPSK, 16QAM, 64QAM)
                       5150-5250      5180-5250
                                                         802.11ac: OFDM (BPSK, QPSK, 16QAM, 64QAM,
                       5250-5350      5250-5320
 5GHz WLAN                                                          256QAM, 1024QAM)
                       5470-5725      5500-5720
                                                         802.11ax: OFDMA (BPSK, QPSK, 16QAM, 64QAM,
                       5725-5850      5745-5825
                                                                    256QAM, 1024QAM)
                                                         BR / EDR: FHSS (GFSK / π/4-DQPSK / 8DPSK)
 Bluetooth             2400-2483.5    2402-2480
                                                         LE: DSSS (GFSK)

1.2       Table for Multiple Listing
The model names in the following table are all refer to the identical product.
                        Model Name                                    Color of Device’s Bottom
                            W31                                              Matte Black
                            W30                                                  Silver
From the above models, model name “W31” was selected as representative model for the test and its data was
recorded in this report.




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            FCC RADIO EXPOSURE TEST REPORT                                               Report No. : FA842742-01



1.3       Table for Class II Change
This product is an extension of original one reported under Sporton project number: FA842742
Below is the table for the change of the product with respect to the original one.
                           Modifications                                    Performance Checking
 1. Adding the 802.11ax mode for WLAN 2.4GHz and
      WLAN 5GHz.
 2. Adding the 160MHz.                                            Maximum Permissible Exposure.
 3. Adding the WLAN 5GHz band 2 and band 3
      (5250~5350 MHz, 5470~5725 MHz) for this device.
 4. Adding an adapter (Model Name: NBS42D120350VU).
 5. Updating the WIFI chip (BCM43684KRFBG) version to
      B1 from A1. The difference between A1 (original) and B1
      (new) as below:
      (1) No functional RF changes versus A1.
                                                                  It doesn't need to verify Maximum
      (2) MAC/PHY related bug fixes and optimizations.
                                                                  Permissible Exposure test.
      (3) Power and yield optimizations.
 6. Adding the Master (Extender), Bridge (Client without
      radar detection) and Client without radar detection
      modes for WLAN 5GHz band 3 and band 4 (5470~5725
      MHz, 5725~5850 MHz).
 7. Updating the 802.11ac data rate and data modulation of
      WLAN 2.4GHz to “MCS 0-11, 1024QAM” from “MCS                It doesn't affect the test result.
      0-9, 256QAM”.
 8. Changing the internal structure of housing.
 9. Changing the housing color to black from white.
 10. Removing USB port.
                          11. Changing the equipment name to
                                                                  It does not affect the test.
                                 “Wireless Router” from “W31”.
 Based on the modification above.
 12. Adding a new model name “W30” which the color of
      device’s bottom is silver.
Note: Maximum Permissible Exposure of other modes are based on original test report.




TEL : 886-3-656-9065                                                              Page Number      : 6 of 9
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            FCC RADIO EXPOSURE TEST REPORT                                                Report No. : FA842742-01




1.4       Testing Location
                                                  Testing Location
      HWA YA        ADD     :    No. 52, Hwa Ya 1st Rd., Kwei-Shan Hsiang, Tao Yuan Hsien, Taiwan, R.O.C.
                    TEL     :    886-3-327-3456        FAX    :   886-3-327-0973
      JHUBEI        ADD     :    No.8, Lane 724, Bo-ai St., Jhubei City, HsinChu County 302, Taiwan, R.O.C.
                    TEL     :    886-3-656-9065        FAX    :   886-3-656-9085
Test site Designation No. TW0006 with FCC.
Test site registered number IC 4086D with Industry Canada.




TEL : 886-3-656-9065                                                               Page Number      : 7 of 9
FAX : 886-3-656-9085                                                               Issued Date      : Jan. 07, 2019
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            FCC RADIO EXPOSURE TEST REPORT                                                    Report No. : FA842742-01




2         Maximum Permissible Exposure
2.1       Limit of Maximum Permissible Exposure
(A) Limits for Occupational / Controlled Exposure
                                                                                                        Averaging Time
  Frequency Range            Electric Field       Magnetic Field        Power Density (S)
                                                                                                         |E|²,|H|² or S
       (MHz)               Strength (E) (V/m)   Strength (H) (A/m)         (mW/ cm²)
                                                                                                          (minutes)
         0.3-3.0                  614                  1.63                     (100)*                           6
         3.0-30                  1842 / f             4.89 / f                 (900 / f)*                        6
         30-300                   61.4                0.163                       1.0                            6
       300-1500                                                                 F/300                            6
     1500-100,000                                                                  5                             6
(B) Limits for General Population / Uncontrolled Exposure
                                                                                                     Averaging Time
 Frequency Range             Electric Field       Magnetic Field        Power Density (S)
                                                                                                      |E|²,|H|² or S
      (MHz)                Strength (E) (V/m)   Strength (H) (A/m)         (mW/ cm²)
                                                                                                       (minutes)
        0.3-1.34                  614                  1.63                     (100)*                           30
        1.34-30                   824/f               2.19/f                   (180/f)*                          30
        30-300                    27.5                0.073                      0.2                             30
       300-1500                                                                F/1500                            30
    1500-100,000                                                                 1.0                             30
Note: f = frequency in MHz ; *Plane-wave equivalent power density

2.2       MPE Calculation Method
The MPE was calculated at 30 cm to show compliance with the power density limit.
The following formula was used to calculate the Power Density:


               30 × P × G                                                      E2
E (V/m) =                                   Power Density:       Pd (W/m²) =
                   d                                                           377
E = Electric field (V/m)
P = RF output power (W)
G = EUT Antenna numeric gain (numeric)
d = Separation distance between radiator and human body (m)
The formula can be changed to

Pd =
        30 × P × G
         377 × d 2
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              FCC RADIO EXPOSURE TEST REPORT                                                                   Report No. : FA842742-01



2.3        Calculated Result and Limit
Exposure Environment: General Population / Uncontrolled Exposure
For Radio 1 (WLAN 2.4GHz)
                                                                              Tune-up    Tune-up
                DG          Power           EIRP          Tolerance                                 Distance          S            S Limit
  Mode                                                                          EIRP      EIRP                           2                2
               (dBi)        (dBm)          (dBm)             (dB)                                     (cm)         (mW/cm )       (mW/cm )
                                                                               (dBm)       (W)
2.4G;G1D        4.22        29.97          34.19               0.50            34.69     2.94442         30        0.26047          1.00000

For Radio 3 (WLAN 5GHz Band 1~2)
                                                                              Tune-up    Tune-up
                DG          Power           EIRP          Tolerance                                 Distance          S            S Limit
  Mode                                                                          EIRP      EIRP                           2                2
               (dBi)        (dBm)          (dBm)             (dB)                                     (cm)         (mW/cm )       (mW/cm )
                                                                               (dBm)       (W)
5.2G;D1D        5.71        29.81          35.52               0.48            36.00     3.98107         30        0.35218          1.00000
5.3G;D1D        5.71        23.97          29.68               0.31            29.99     0.99770         30        0.08822          1.00000

For Radio 2 (WLAN 5GHz Band 3~4)
                                                                              Tune-up    Tune-up
                DG          Power           EIRP          Tolerance                                 Distance          S            S Limit
  Mode                                                                          EIRP      EIRP                           2                2
               (dBi)        (dBm)          (dBm)             (dB)                                     (cm)         (mW/cm )       (mW/cm )
                                                                               (dBm)       (W)
5.6G;D1D        5.82        23.95          29.77               0.22            29.99     0.99770         30        0.08822          1.00000
5.8G;D1D        5.82        29.93          35.75               0.25            36.00     3.98107         30        0.35218          1.00000

For Radio 4 (Bluetooth)
                                                                              Tune-up    Tune-up
                   DG        Power          EIRP          Tolerance                                 Distance          S            S Limit
    Mode                                                                        EIRP      EIRP                           2                2
                  (dBi)      (dBm)         (dBm)             (dB)                                     (cm)         (mW/cm )       (mW/cm )
                                                                               (dBm)       (W)
 2.4G;BT-BR        4.12          2.95          7.07            0.50             7.57     0.00571         30        0.00050          1.00000
 2.4G;BT-LE        4.12          2.72          6.84            0.50             7.34     0.00542         30        0.00047          1.00000

Simultaneous Transmission Analysis Mode:
Radio 1 (WLAN 2.4GHz) + Radio 3 (WLAN 5GHz Band 1~2) + Radio 2 (WLAN 5GHz Band 3~4) + Radio 4
(Bluetooth)
                                                                      Tune-up      Tune-up
                DG        Power          EIRP         Tolerance                              Distance      S      S Limit             Ratio
   Mode                                                                 EIRP        EIRP                      2          2
               (dBi)      (dBm)         (dBm)            (dB)                                  (cm)     (mW/cm ) (mW/cm )           (S/Limit)
                                                                       (dBm)         (W)
 2.4G;G1D      4.22       29.97         34.19           0.50           34.69       2.94442     30        0.26047      1.00000       0.26047
 5.2G;D1D      5.71       29.81         35.52           0.48           36.00       3.98107     30        0.35218      1.00000       0.35218
 5.8G;D1D      5.82       29.93         35.75           0.25           36.00       3.98107     30        0.35218      1.00000       0.35218
2.4G;BT-BR     4.12       2.95          7.07            0.50           7.57        0.00571     30        0.00050      1.00000       0.00050
                                                                                                                    Sum Ratio       0.96533
                                                                                                                    Ratio Limit        1




                                                 ─────THE END─────
TEL : 886-3-656-9065                                                                                    Page Number      : 9 of 9
FAX : 886-3-656-9085                                                                                    Issued Date      : Jan. 07, 2019
Report Template No.: CB Ver1.0                                                                          Report Version   : 01



Document Created: 2019-03-23 09:15:49
Document Modified: 2019-03-23 09:15:49

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