RF exposure info (MPE) rev

FCC ID: JNZS00175

RF Exposure Info

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FCCID_4488700

                                                           RF Exposure Report

                       Report No.: SA190924E01

                            FCC ID: JNZS00175

                       Test Model: S00175

                 Received Date: Sep. 24, 2019

                         Test Date: Oct. 03, 2019

                     Issued Date: Oct. 18, 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
            Test Location : E-2, No.1, Li Hsin 1st Road, Hsinchu Science Park, Hsinchu City 300,
                            Taiwan
       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.: SA190924E01                                              Page No. 1 / 6                                             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 ...................................................................................................................................... 5
    2.5      Calculation Result Of Maximum Conducted Power ............................................................................ 6




Report No.: SA190924E01                                              Page No. 2 / 6                                              Report Format Version: 6.1.1


                                          Release Control Record


Issue No.             Description                                         Date Issued
SA190924E01           Original release.                                   Oct. 18, 2019




Report No.: SA190924E01                      Page No. 3 / 6        Report Format Version: 6.1.1


1    Certificate of Conformity


            Product: Bluetooth Speaker

              Brand: ULTIMATE EARS

        Test Model: S00175

    Sample Status: ENGINEERING SAMPLE

          Applicant: LOGITECH FAR EAST LTD.

          Test Date: Oct. 03, 2019

         Standards: FCC Part 2 (Section 2.1091)

                          KDB 447498 D01 General RF Exposure Guidance v06

                          IEEE C95.3 -2002




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:      Oct. 18, 2019
                                 Joyce Kuo / Specialist




     Approved by :                                               ,   Date:      Oct. 18, 2019
                              Clark Lin / Technical Manager




Report No.: SA190924E01                         Page No. 4 / 6                       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.




2.4      Antenna Gain

    Antenna Gain (dBi)         Frequency range(GHz)                  Antenna Type             Connector Type
            1.62                       2.4~2.4835         On Board Wire Monopole Antenna             none




Report No.: SA190924E01                             Page No. 5 / 6                       Report Format Version: 6.1.1


2.5     Calculation Result of Maximum Conducted Power


                  Frequency                                                        Power
  Operation                       Max Power       Antenna Gain    Distance                        Limit
                     Band                                                         Density               2
   Mode                             (mW)              (dBi)         (cm)                 2      (mW/cm )
                    (MHz)                                                        (mW/cm )
   BT-EDR            2441           9.886               1.62         20          0.00286             1

      BT-LE          2440           5.821               1.62         20          0.00168             1

Note:
1. Determining compliance based on the results of the compliance measurement, not taking into account
   measurement instrumentation uncertainty.
2. The device of BT-EDR and BT-LE function type can't transmit simultaneously.




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 + WLAN 5GHz = 0.468 + 0.453 = 0.921
Therefore the maximum calculations of above situations are less than the “1” limit.



--- END ---




Report No.: SA190924E01                       Page No. 6 / 6                      Report Format Version: 6.1.1



Document Created: 2019-10-24 18:00:42
Document Modified: 2019-10-24 18:00:42

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