RF Exposure Info (MPE)

FCC ID: JNZNR0018

RF Exposure Info

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FCCID_4277392

                                                           RF Exposure Report

                       Report No.: SA181107E09

                            FCC ID: JNZNR0018

                       Test Model: N-R0018

                 Received Date: Oct. 31, 2018

                         Test Date: Oct. 31, 2018 to Feb. 14, 2019

                     Issued Date: Apr. 22, 2019


                         Applicant: LOGITECH FAR EAST LTD.

                          Address: #2 Creation Rd. 4, Science-Based Ind. Park Hsinchu Taiwan, R.O.C.



                        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:




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.: SA181107E09                                              Page No. 1 / 7                                             Report Format Version: 6.1.1


                                                                   Table of Contents
Release Control Record .................................................................................................................................. 3
1         Certificate of Conformity ...................................................................................................................... 4
2         RF Exposure .......................................................................................................................................... 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 ............................................................................. 7




Report No.: SA181107E09                                              Page No. 2 / 7                                              Report Format Version: 6.1.1


                                              Release Control Record


Issue No.                 Description                                         Date Issued
SA181107E09               Original release.                                   Apr. 22, 2019




Report No.: SA181107E09                          Page No. 3 / 7        Report Format Version: 6.1.1


1    Certificate of Conformity


            Product: Wireless Hub

              Brand: Logitech

        Test Model: N-R0018

    Sample Status: ENGINEERING SAMPLE

          Applicant: LOGITECH FAR EAST LTD.

          Test Date: Oct. 31, 2018 to Feb. 14, 2019

         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:       Apr. 22, 2019
                                 Wendy Wu / Specialist




     Approved by :                                              ,   Date:       Apr. 22, 2019
                                 May Chen / Manager




Report No.: SA181107E09                        Page No. 4 / 7                        Report Format Version: 6.1.1


2      RF Exposure

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 20cm away from the body of the user.
         So, this device is classified as Mobile Device.




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2.4     Antenna Gain

                                           For WLAN
                            Frequency
      Antenna Gain (dBi)                                  Antenna Type            Connector Type
                           range(GHz)
            4.87           2.4~2.4835                    Printed Antenna                 N/A

                                         For Bluetooth
                            Frequency
      Antenna Gain (dBi)                                  Antenna Type            Connector Type
                           range(GHz)
            1.61           2.4~2.4835                    Printed Antenna                 N/A

                                           For GFSK
                            Frequency
      Antenna Gain (dBi)                                  Antenna Type            Connector Type
                           range(GHz)
              3            2.4~2.4835                    Dipole Antenna                R-SMA




Report No.: SA181107E09                 Page No. 6 / 7                     Report Format Version: 6.1.1


2.5     Calculation Result of Maximum Conducted Power


                    Frequency
      Operation                   Max Power    Antenna Gain    Distance   Power Density       Limit
                       Band                                                        2                2
       Mode                         (mW)           (dBi)         (cm)       (mW/cm )        (mW/cm )
                      (MHz)
WLAN 2.4G GHz             2437     93.756            4.87        20         0.05724               1

      Bluetooth           2480      8.414            1.61        20         0.00243               1

       GFSK               2405      3.999            3.00        20         0.00159               1




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


WLAN 2.4G GHz + Bluetooth+ GFSK =0.05724 / 1 + 0.00243 / 1+ 0.00159 /1 = 0.06126
Therefore the maximum calculations of above situations are less than the “1” limit.



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Report No.: SA181107E09                       Page No. 7 / 7                    Report Format Version: 6.1.1



Document Created: 2019-05-15 10:51:37
Document Modified: 2019-05-15 10:51:37

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