RF Exposure Info

FCC ID: YCP-MB1293000

RF Exposure Info

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                                            SGS-CSTC Standards Technical Services Co.,
                                            Ltd. Shanghai Branch
                                                                                        Report No.: SHEM190100006502
                                                                                        Page:       1 of 8


  1       Cover Page
                                   RF Exposure REPORT
  Application No.:                       SHEM1901000065CR
  FCC ID:                                YCP-MB1293000
  IC:                                    8976A-MB1293000
  Applicant:                             STMicroelectronics SAS
  Address of Applicant:                  190 Avenue Celestin Coq, CS 60004, 13016 Rousset Cedex, France
  Manufacturer:                          STMicroelectronics
  Address of Manufacturer:               190 Avenue Celestin Coq, CS 60004, 13016 Rousset Cedex, France
  Factory:                               Embest Technology Co., Ltd.
  Address of Factory:                    Tower B 4/F, Shanshui Building, Nanshan Yungu Innovation Industry Park,
                                         Liuxian Ave. No. 1183, Taoyuan street, Nanshan Distric, Shenzhen, China
  Equipment Under Test (EUT):
  EUT Name:                P-NUCLEO-WB55
  Model No.:               MB1293C-02
  Trade mark:              STMicroelectronics
  Standard(s) :            FCC Rules 47 CFR §2.1091
                           KDB447498 D01 General RF Exposure Guidance v06
                           RSS-102 Issue 5 (March 2015)
  Date of Receipt:         2019-01-09
  Date of Test:            2019-01-15 to 2019-01-18
  Date of Issue:           2019-02-28
  Test Result:                     Pass*
  * In the configuration tested, the EUT complied with the standards specified above.




               Parlam Zhan
            E&E Section Manager
The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in this report.
If the product in this report is used in any configuration other than that detailed in the report, the manufacturer must ensure the new
system complies with all relevant standards. Any mention of SGS International Electrical Approvals or testing done by SGS
International Electrical Approvals in connection with, distribution or use of the product described in this report must be approved by
SGS International Electrical Approvals in writing.


               SGS-CSTC Standards Technical Services Co., Ltd. Shanghai
               Branch
                                                           Report No.: SHEM190100006502
                                                           Page:       2 of 8




                                   Revision Record
  Version        Description                    Date                      Remark

      00           Original                  2019-02-28                      /




Authorized for issue
by:




                              Bill Wu / Project Engineer




                              Parlam Zhan / Reviewer


                                     SGS-CSTC Standards Technical Services Co., Ltd. Shanghai
                                     Branch
                                                                                                           Report No.: SHEM190100006502
                                                                                                           Page:       3 of 8




2         Contents
                                                                                                                                                                  Page
1     COVER PAGE................................................................................................................................................. 1
2     CONTENTS ..................................................................................................................................................... 3
3     GENERAL INFORMATION ......................................................................................................................... 4
    3.1    GENERAL DESCRIPTION OF E.U.T.................................................................................................................. 4
    3.2    DETAILS OF E.U.T. ........................................................................................................................................ 4
    3.3    TEST LOCATION ............................................................................................................................................. 5
    3.4    TEST FACILITY............................................................................................................................................... 5
4     TEST STANDARDS AND LIMITS .............................................................................................................. 6
    4.1    FCC RADIOFREQUENCY RADIATION EXPOSURE LIMITS: ................................................................................ 6
    4.2    IC RADIOFREQUENCY RADIATION EXPOSURE LIMITS: .................................................................................... 7
5     MEASUREMENT AND CALCULATION ................................................................................................... 8
    5.1    MAXIMUM TRANSMIT POWER ........................................................................................................................ 8
    5.2    RF EXPOSURE CALCULATION ........................................................................................................................ 8


                      SGS-CSTC Standards Technical Services Co., Ltd. Shanghai
                      Branch
                                                     Report No.: SHEM190100006502
                                                     Page:       4 of 8




3   General Information

3.1 General Description of E.U.T.

     Power supply:
                            DC 5V power by PC
     Test voltage:
                            AC120V 60Hz

3.2 Details of E.U.T.

    Antenna Gain
                            1.95dBi
    Antenna Type
                            PCB Antenna
    Channel Spacing
                            2MHz
    Modulation Type
                            GFSK
    Number of Channels
                            40
    Operation Frequency
                            2402MHz to 2480MHz


                      SGS-CSTC Standards Technical Services Co., Ltd. Shanghai
                      Branch
                                                                    Report No.: SHEM190100006502
                                                                    Page:       5 of 8




3.3 Test Location
    All tests were performed at:
    SGS-CSTC Standards Technical Services Co., Ltd. Shanghai Branch
    588 West Jindu Road, Xinqiao, Songjiang, 201612 Shanghai, China.
    Tel: +86 21 6191 5666
    Fax: +86 21 6191 5678


3.4 Test Facility

     The test facility is recognized, certified, or accredited by the following organizations:
      • CNAS (No. CNAS L0599)
     CNAS has accredited SGS-CSTC Standards Technical Services (Shanghai) Co., Ltd. to ISO/IEC
     17025:2005 General Requirements for the Competence of Testing and Calibration Laboratories
     (CNAS-CL01 Accreditation Criteria for the Competence of Testing and Calibration Laboratories) for
     the competence in the field of testing.
      • NVLAP (Certificate No. 201034-0)
     SGS-CSTC Standards Technical Services (Shanghai) Co., Ltd. is accredited by the National
     Voluntary Laboratory Accreditation Program(NVLAP). Certificate No. 201034-0.
      • FCC –Designation Number: CN5033
     SGS-CSTC Standards Technical Services (Shanghai) Co., Ltd. has been recognized as an
     accredited testing laboratory.
     Designation Number: CN5033. Test Firm Registration Number: 479755.
      • Industry Canada (IC) – IC Assigned Code: 8617A
     The 3m Semi-anechoic chamber of SGS-CSTC Standards Technical Services (Shanghai) Co., Ltd.
     has been registered by Certification and Engineering Bureau of Industry Canada for radio equipment
     testing with Registration No.: 8617A-1.
      • VCCI (Member No.: 3061)
     The 3m Semi-anechoic chamber and Shielded Room of SGS-CSTC Standards Technical Services
     (Shanghai) Co., Ltd. has been registered in accordance with the Regulations for Voluntary Control
     Measures with Registration No.: R-13868, C-14336, T-12221, G-10830 respectively.


                       SGS-CSTC Standards Technical Services Co., Ltd. Shanghai
                       Branch
                                                                  Report No.: SHEM190100006502
                                                                  Page:       6 of 8




4    Test Standards and Limits

4.1 FCC Radiofrequency radiation exposure limits:

 According to§1.1310, the limit for general population/uncontrolled exposures

         Frequency             Power density(mW/cm2)        Averaging time(minutes)

     300MHz~1.5GHz                      f/1500                         30

     1.5GHz~100GHz                        1.0                          30


                        SGS-CSTC Standards Technical Services Co., Ltd. Shanghai
                        Branch
                                                                     Report No.: SHEM190100006502
                                                                     Page:       7 of 8




4.2 IC Radiofrequency radiation exposure limits:

 According to RSS-102 section 2.5.2, RF exposure evaluation is required if the separation distance
 between the user and/or bystander and the device’s radiating element is greater than 20 cm, except
 when the device operates as follows:
 below 20 MHz and the source-based, time-averaged maximum e.i.r.p. of the device is equal to or less
 than 1 W (adjusted for tune-up tolerance);
 • at or above 20 MHz and below 48 MHz and the source-based, time-averaged maximum e.i.r.p. of the
 device is equal to or less than 4.49/ƒ0.5 W (adjusted for tune-up tolerance), where ƒ is in MHz;
 • at or above 48 MHz and below 300 MHz and the source-based, time-averaged maximum e.i.r.p. of
 the device is equal to or less than 0.6 W (adjusted for tune-up tolerance);
 • at or above 300 MHz and below 6 GHz and the source-based, time-averaged maximum e.i.r.p. of the
 device is equal to or less than 1.31 x 10-2 ƒ0.6834 W (adjusted for tune-up tolerance), where ƒ is in MHz;
 • at or above 6 GHz and the source-based, time-averaged maximum e.i.r.p. of the device is equal to or
 less than 5 W (adjusted for tune-up tolerance).
 For 2.4G device, the limit of worse case is 2.68 W


                       SGS-CSTC Standards Technical Services Co., Ltd. Shanghai
                       Branch
                                                                  Report No.: SHEM190100006502
                                                                  Page:       8 of 8




5      Measurement and Calculation

5.1 Maximum transmit power

 The Power Data is based on the RF Test Report SHEM190100006501.
 Test Data:
      Test Mode        Test Channel          Power[dBm]      Peak Power (mW)

        BLE                2402                -6.65                0.22
        BLE                2440                -3.65                0.43
        BLE                2480                -3.46                0.45

5.2 RF Exposure Calculation
The max conducted output power is 0.45mW;
The best case gain of the antenna is 1.95dBi. 1.95 dBi logarithmic terms convert to numeric result is
nearly 1.57

For FCC:
                                  PG
                                  2
 1) According to the formula S= 4R π , we can calculate S which is MPE.
 2) Note:
 3) P (Watts)
 4) G (Antenna gain in numeric)
 5) R = distance to the center of radiation of antenna (in meter) = 20cm
 6) MPE limit = 1mW/cm²
        PG
 S=            = 0.0001mW/cm2<1mW/cm²
       4R 2π
 For IC:

 E.I.R.P.= P*G= 0.00045×1.57=0.001W<2.68W
 So the device is exclusion from SAR test.




                                       --End of the Report--



Document Created: 2019-04-28 05:40:47
Document Modified: 2019-04-28 05:40:47

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