RF Exposure Info (MPE)

FCC ID: 2AH3O-MLM10

RF Exposure Info

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FCCID_4314453

                                                           RF Exposure Report

                       Report No.: SA190311E06

                            FCC ID: 2AH3O-MLM10

                       Test Model: LBCA2BZZFZ-710

                 Received Date: Mar. 11, 2019

                         Test Date: Mar. 28 to Apr. 08, 2019

                     Issued Date: May 27, 2019


                         Applicant: Rapsodo Pte Ltd

                          Address: Blk 67, Ayer Rajah Crescent, #04-10, Singapore 139950



                        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.: SA190311E06                                              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.: SA190311E06                                              Page No. 2 / 7                                              Report Format Version: 6.1.1


                                              Release Control Record


Issue No.                 Description                                         Date Issued
SA190311E06               Original release.                                   May 27, 2019




Report No.: SA190311E06                          Page No. 3 / 7        Report Format Version: 6.1.1


1    Certificate of Conformity


            Product: Bluetooth Module

              Brand: Murata Electronics

        Test Model: LBCA2BZZFZ-710

    Sample Status: MASS-PRODUCTION

          Applicant: Rapsodo Pte Ltd

          Test Date: Mar. 28 to Apr. 08, 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:          May 27, 2019
                                 Wendy Wu / Specialis




     Approved by :                                             ,   Date:          May 27, 2019
                                 May Chen / Manager




Report No.: SA190311E06                       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.




Report No.: SA190311E06                            Page No. 5 / 7                       Report Format Version: 6.1.1


2.4       Antenna Gain


                                                            For BT used
Antenna Transmitter                                              Antenna Gain    Frequency
                           Brand             Model                                               Antenna Type     Connector Type
  No      Circuit                                                    (dBi)      range(GHz)
      1     Chain (0)      Murata    LDA313G2613M-322                 -3        2.4~2.4835         Monopole             NA
                                                          For 24GHz used
Antenna                                                                     Frequency
                  Brand              Model           Antenna Gain (dBi)                       Antenna Type      Connector Type
  No                                                                       range(GHz)
                                                                                             Integrated Patch
      1         InnoSent            SMR-333                  7              24~24.25                                  NA
                                                                                                 Antenna




Report No.: SA190311E06                                  Page No. 6 / 7                               Report Format Version: 6.1.1


2.5     Calculation Result of Maximum Conducted Power


For BT-LE
                   Frequency
  Operation                        Max Power      Antenna Gain             Distance    Power Density       Limit
                      Band                                                                      2                2
   Mode                              (mW)             (dBi)                  (cm)        (mW/cm )        (mW/cm )
                     (MHz)
 Bluetooth-LE         2402           0.3155              -3                  20           0.00003              1


For 24GHz (FCC ID: UXS-SMR3X3)
                                  Field
                Frequency      Strength of Pout EIRP                                         Power
 Operation                                                    Pout EIRP        Distance                      Limit
                   Band       Fundamental                                                   Density                2
  Mode                                       (dBm)              (mW)             (cm)              2       (mW/cm )
                  (MHz)                                                                    (mW/cm )
                                (dBuV/m)

   24GHz          24169          106.14         10.91             12.331          20        0.00245             1
Field strength is then converted to EIRP as follows:
(i) EIRP = ((E*d)^2) / 30
      where:
        E is the field strength in V/m;
        d is the measurement distance in meters;
        EIRP is the equivalent isotropically radiated power in watts.
(ii) Working in dB units, the above equation is equivalent to:
       EIRP[dBm] = E[dBμV/m] + 20log(d[meters]) - 104.77
(iii) Or, if d is 3 meters: EIRP[dBm] = E[dBμV/m] – 95.23

Note:
1. Determining compliance based on the results of the compliance measurement, not taking into account
      measurement instrumentation uncertainty.




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


BT-LE +24GHz = 0.00003 / 1 + 0.00245 / 1 = 0.00248
Therefore the maximum calculations of above situations are less than the “1” limit.



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Report No.: SA190311E06                          Page No. 7 / 7                              Report Format Version: 6.1.1



Document Created: 2019-06-12 08:12:58
Document Modified: 2019-06-12 08:12:58

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