SA180529E06_R02_UGSI_BX3100_FCC MPE

FCC ID: N7NBX31A

RF Exposure Info

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FCCID_4001996

                                                           RF Exposure Report

                       Report No.: SA180529E06 R2

                            FCC ID: N7NBX31A

                       Test Model: BX3100, BX3105

                 Received Date: May 29, 2018

                         Test Date: June 30, 2018

                     Issued Date: Sep. 11, 2018


                         Applicant: Sierra Wireless Inc.

                          Address: 13811 Wireless Way, Richmond, BC V6V 3A4, Canada



                        Issued By: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch
                                   Hsin Chu Laboratory
                    Lab Address: E-2, No.1, Li Hsin 1st Road, Hsinchu Science Park, Hsinchu City 300,
                                 Taiwan R.O.C.
            Test Location: E-2, No.1, Li Hsin 1st Road, Hsinchu Science Park, Hsinchu City 300,
                           Taiwan R.O.C.
       FCC Registration /
                           723255 / TW2022
      Designation Number:




                                                                                                                        {img:accredited-taflogo}




This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted
only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this
report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product
unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you
provided to us. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided,
however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time
shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific
mention, the uncertainty of measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification. The report
must not be used by the client to claim product certification, approval, or endorsement by any government agencies.


Report No.: SA180529E06 R2                           Page No. 1 / 9                                                             Report Format Version: 6.1.1
Cancels and replaces the report No.: SA180529E06 R1 dated Aug. 22, 2018


                                                                   Table of Contents
Release Control Record .................................................................................................................................. 3
1         Certificate of Conformity ...................................................................................................................... 4
2         RF Exposure (Mobile Device) .............................................................................................................. 5
    2.1      Limits For Maximum Permissible Exposure (MPE) ............................................................................. 5
    2.2      MPE Calculation Formula ................................................................................................................... 5
    2.3      Classification ....................................................................................................................................... 5
    2.4      Antenna Gain ...................................................................................................................................... 6
    2.5      Calculation Result of Maximum Conducted Power ............................................................................. 6
3         RF Exposure (Standalone SAR test exclusion considerations) ...................................................... 7
    3.1      Evaluation Result ................................................................................................................................ 7
    3.2      SAR Test Exclusion Thresholds (For 1-g head or body) ..................................................................... 8
    3.3      SAR Test Exclusion Thresholds (For 10-g extremity) ......................................................................... 9
4         Conclusion ............................................................................................................................................ 9




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                                                Release Control Record


Issue No.               Description                                              Date Issued
SA180529E06             Original release.                                        July 19, 2018
SA180529E06 R1          Add SAR test evaluation                                  Aug. 22, 2018
SA180529E06 R2          Modify the MPE value                                     Sep. 11, 2018




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1    Certificate of Conformity


             Product: AirPrime BX310x module

               Brand: Sierra Wireless Inc.

         Test Model: BX3100, BX3105

     Sample Status: ENGINEERING SAMPLE

           Applicant: Sierra Wireless Inc.

           Test Date: June 30, 2018

          Standards: FCC Part 2 (Section 2.1091)

                          KDB 447498 D01 General RF Exposure Guidance v06
                          IEEE C95.1-1992



The above equipment has been tested by Bureau Veritas Consumer Products Services (H.K.) Ltd.,
Taoyuan Branch, and found compliance with the requirement of the above standards. The test record, data
evaluation & Equipment Under Test (EUT) configurations represented herein are true and accurate accounts
of the measurements of the sample’s EMC characteristics under the conditions specified in this report.




      Prepared by :                                                       ,   Date:   Sep. 11, 2018
                                    Wendy Wu / Specialist




     Approved by :                                                        ,   Date:   Sep. 11, 2018
                                     May Chen / Manager




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2      RF Exposure (Mobile Device)

2.1      Limits For Maximum Permissible Exposure (MPE)

    Frequency Range            Electric Field       Magnetic Field        Power Density     Average Time
                                                                                   2
         (MHz)                Strength (V/m)        Strength (A/m)          (mW/cm )          (minutes)
                               Limits For General Population / Uncontrolled Exposure
        0.3-1.34                   614                    1.63               (100)*                30
                                                                                     2
         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

f = Frequency in MHz ; *Plane-wave equivalent power density



2.2      MPE Calculation Formula

                          2
Pd = (Pout*G) / (4*pi*r )
where
                                   2
Pd = power density in mW/cm
Pout = output power to antenna in mW
G = gain of antenna in linear scale
Pi = 3.1416
R = distance between observation point and center of the radiator in cm



2.3      Classification

      The antenna of this product, under normal use condition, is at least 20m away from the body of the user.
      So, this device is classified as Mobile Device.




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2.4       Antenna Gain

For Model No.: BX3100
                                                         Antenna Net Gain Frequency rang          Antenna      Connecter
Ant No.           Brand                  Model
                                                               (dBi)          (GHz)                type          Type
      1        RF Solutions         ANT-24G-S21                    0           2.4~2.4835        Monopole         SMA
      2        MobileMark              CVS-2400                    2.5         2.4~2.4835          Dipole         SMA
      3         GemWave           FSD_BL3404-50T                   1.5         2.4~2.4835          Dipole         SMA
                                                                               2.4~2.4835
      4           Molex           PS-47950-011-001               2.27                              Dipole     i-pex(MHF)
                                                                                5.15~5.85
   5      RF Solutions             ANT-24G-DPL-2                 2.21          2.4~2.4835          Dipole         SMA
For Model No.: BX3105
                                                         Antenna Net Gain Frequency rang          Antenna      Connecter
Ant No.           Brand                  Model
                                                               (dBi)          (GHz)                type          Type
      1    Sierra Wireless Inc.         BX3105                   -1.65         2.4~2.4835           PIFA           NA



2.5       Calculation Result of Maximum Conducted Power


                     Evaluation
  Operation                           Max Power        Antenna Gain       Distance      Power Density          Limit
                     Frequency                                                                   2                   2
   Mode                                 (mW)               (dBi)            (cm)          (mW/cm )           (mW/cm )
                       (MHz)
WLAN 2.4GHz              2437             100               2.50             20            0.03538                 1

      BT-EDR             2441            2.818              2.50             20            0.00100                 1

      BT-LE              2440            2.818              2.50             20            0.00100                 1


NOTE:      1. This power include tune-up tolerance range that specified in Tune Up power table



Conclusion:
The formula of calculated the MPE is:
CPD1 / LPD1 + CPD2 / LPD2 + ……etc. < 1
CPD = Calculation power density
LPD = Limit of power density

WLAN 2.4GHz + Bluetooth = 0.48486 / 1 + 0.00467 / 1 = 0.48953
WLAN 5GHz + Bluetooth = 0.27964 / 1 + 0.00467 / 1 = 0.28431

Therefore the maximum calculations of above situations are less than the “1” limit.




Report No.: SA180529E06 R2                           Page No. 6 / 9                              Report Format Version: 6.1.1
Cancels and replaces the report No.: SA180529E06 R1 dated Aug. 22, 2018


3       RF Exposure (Standalone SAR test exclusion considerations)


3.1      Evaluation Result

Following FCC KDB 447498 D01 “General SAR test exclusion guidance”

The corresponding SAR Exclusion Threshold condition, listed below:

1) The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50
    mm are determined by:
    [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)]
    ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where
                                                                   .
                                                                                             .
                                                                         The test exclusions are applicable only
          when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100
          MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied
          to determine SAR test exclusion.

2) At 100 MHz to 6 GHz and for test separation distances > 50 mm, the SAR test exclusion threshold is
    determined according to the following:
    a) [Threshold at 50 mm in step 1) + (test separation distance - 50mm)·( f(MHz)/150)] mW, at 100MHz to
        1500 MHz
      b) [Threshold at 50 mm in step 1) + (test separation distance - 50 mm)·10] mW at > 1500 MHz and ≤ 6
         GHz

3) At frequencies below 100 MHz, the following may be considered for SAR test exclusion.
    a) The threshold at the corresponding test separation distance at 100 MHz in step 2) is multiplied by [1 +
        log(100/f(MHz))] for test separation distances > 50 mm and < 200 mm.
      b) The threshold determined by the equation in a) for 50 mm and 100 MHz is multiplied by ½ for test
         separation distances ≤ 50 mm.
      c) SAR measurement procedures are not established below 100 MHz. When SAR test exclusion cannot
         be applied, a KDB inquiry is required to determine SAR evaluation requirements for any test results to
         be acceptable.




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                                                                                                                   Eooert
                                                                                                                    venitas




3.2      SAR Test Exclusion Thresholds (For 1—g head or body)

For WLAN
                                               Min. test            SAR test            1—g SAR test
      Frequency         Max. Power            separation            exclusion             exclusion            Result
        (Wlara)            ({mW)               distance            calculation
                                                 (mm)              value WE "           thresholds

      2412~2462              100                   60                 2.602                  3                 Pass
NOTE: 1. Calculate SAR test exclusion thresholds from condition "1" formulas.



For BT—EDR
SAR Test Exclusion Thresholds
                                                    Min. test              SAR test         1—g SAR test
      Frequency            Max. Power              separation              exclusion          exclusion           Result
        (MHz)                 ({mW)                 distance              calculation
                                                      (mm)                value®"E"          thresholds

      2402 ~ 2480             2.818                      60                 0.074                 3               Pass
 NOTE:       1. Calculate SAR test exclusion thresholds from condition "1" formulas.




For BT—LE
SAR Test Exclusion Thresholds
                                                    Min. test              SAR test         1—g SAR test
      Frequency            Max. Power              separation              exclusion                   .
                                                     :                            ;           exclusion           Result
        (MHz)                  ({mW)                distance              calculation
                                                        (mm)              value®"s"          thresholds

      2402 ~ 2480             2.818                      60                 0.074                 3               Pass
NOTE: 1. Calculate SAR test exclusion thresholds from condition "1" formulas.




Report No.: SA180529E06 R2                            Page No. 8 / 9                             Report Format Version: 6.1.1
Cancels and replaces the report No.: SA180529E06 R1 dated Aug. 22, 2018


                                                                                                                     Eooert
                                                                                                                      venitas



3.3      SAR Test Exclusion Thresholds (For 10—g extremity)


For WLAN
                                                Min. test           SAR test            10—g extremity
      Frequency         Max. Power            separation            exclusion             SAR test               Result
        (MHz)              ({mW)               distance            calculation            exclusion
                                                 ({mm)             valueNO"E"            thresholds
      2412~2462              100                   25                 6.244                  7.5                 Pass
NOTE: 1. Calculate SAR test exclusion thresholds from condition "1" formulas.


For BT—EDR
SAR Test Exclusion Thresholds
                                                    Min. test              SAR test         10—g extremity
      Frequency            Max. Power              separation              exclusion           SAR test             Result
        (MHz)                 ({mW)                 distance              calculation          exclusion
                                                        (mm)              valueNO"E"          thresholds
      2402 ~ 2480             2.818                      25                 0.178                  7.5              Pass
    NOTE:     1. Calculate SAR test exclusion thresholds from condition "1" formulas.




For BT—LE
SAR Test Exclusion Thresholds
                                                    Min. test              SAR test         10—g extremity
      Frequency            Max. Power              separation              exclusion           SAR test             Result
        (MHz)                 ({mW)                 distance              calculation          exclusion
                                                        (mm)              valueNE             thresholds
      2402 ~ 2480             2.818                      25                 0.178                  7.5              Pass
NOTE: 1. Calculate SAR test exclusion thresholds from condition "1" formulas.




4      Conclusion


Since Source—base time average power is below SAR test exclusion power thresholds, the SAR evaluation is
not required.




——— END ———




Report No.: SA180529E06 R2                            Page No. 9/ 9                                Report Format Version: 6.1.1
Cancels and replaces the report No.: SA180529E06 R1 dated Aug. 22, 2018



Document Created: 2018-09-11 15:51:24
Document Modified: 2018-09-11 15:51:24

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