RF exposure Info

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RF Exposure Info

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                                   SGS-CSTC Standards Technical Services Co., Ltd.
                                   Shenzhen Branch




                                                                         Report No.: SZEM190801719602
                                                                         Page:        1 of 8
1    Cover page


          RF Exposure Evaluation Report
Application No.:                 SZEM1908017196CR
Applicant:                       Seeed Technology Co., Ltd.
Address of Applicant:            9F, G3 Building, TCL International E City, Zhongshanyuan Road, Nanshan
                                 District, Shenzhen, China 518055
Manufacturer:                    Seeed Technology Co., Ltd.
Address of Manufacturer:         9F, G3 Building, TCL International E City, Zhongshanyuan Road, Nanshan
                                 District, Shenzhen, China 518055

Equipment Under Test (EUT):
Product Name:               W600 WiFi Module
Model No.:                       W600 Module
Trade mark:                      Seeedstudio
FCC ID:                          Z4T-W600MODULE
Standards:                       47 CFR Part 1.1307
                                 47 CFR Part 1.1310
Date of Receipt:                 2019-08-07
Date of Test:                    2019-08-06 to 2019-08-22
Date of Issue:                   2019-08-27
Test Result :                      PASS*

*   In the configuration tested, the EUT complied with the standards specified above.




            Keny Xu
      EMC Laboratory Manager


                             SGS-CSTC Standards Technical Services Co., Ltd.
                             Shenzhen Branch
                                                             Report No.: SZEM190801719602
                                                             Page:       2 of 8

2 Version
                                           Revision Record
       Version       Chapter               Date                  Modifier       Remark

       01                               2019-08-27                              Original




  Authorized for issue by:




                                Harry Wu /Project Engineer




                                Eric Fu /Reviewer


                                                SGS-CSTC Standards Technical Services Co., Ltd.
                                                Shenzhen Branch
                                                                                                      Report No.: SZEM190801719602
                                                                                                      Page:       3 of 8

3         Contents
                                                                                                                                                            Page
1       COVER PAGE .............................................................................................................................................. 1

2       VERSION ...................................................................................................................................................... 2

3       CONTENTS .................................................................................................................................................. 3

4       GENERAL INFORMATION .......................................................................................................................... 4
    4.1     GENERAL DESCRIPTION OF EUT ................................................................................................................. 4
    4.2     TEST LOCATION .......................................................................................................................................... 5
    4.3     TEST FACILITY ............................................................................................................................................ 5
    4.4     DEVIATION FROM STANDARDS ..................................................................................................................... 6
    4.5     ABNORMALITIES FROM STANDARD CONDITIONS............................................................................................ 6
    4.6     OTHER INFORMATION REQUESTED BY THE CUSTOMER ................................................................................. 6
5       RF EXPOSURE EVALUATION .................................................................................................................... 7
    5.1 RF EXPOSURE COMPLIANCE REQUIREMENT ................................................................................................ 7
       5.1.1 Limits ................................................................................................................................................ 7
       5.1.2 Test Procedure ................................................................................................................................ 7
    4.1.3 EUT RF EXPOSURE EVALUATION ............................................................................................................... 8


                           SGS-CSTC Standards Technical Services Co., Ltd.
                           Shenzhen Branch
                                                        Report No.: SZEM190801719602
                                                        Page:       4 of 8


4   General Information

4.1 General Description of EUT
    Power supply:            DC3.3V(Module)/DC5V(Development Board)
    Operation Frequency:     802.11b/g/n(HT20): 2412MHz to 2462MHz
                             802.11n(HT40): 2422MHz to 2452MHz
    Modulation Type:         802.11b: DSSS (CCK, DQPSK, DBPSK)
                             802.11g/n: OFDM (64QAM, 16QAM, QPSK, BPSK)
    Number of Channels:      802.11b/g/n(HT20):11
                             802.11n(HT40):7
    Channel Spacing:         5MHz
    Antenna Type:            PCB Antenna
    Antenna Gain:            0dBi


                              SGS-CSTC Standards Technical Services Co., Ltd.
                              Shenzhen Branch
                                                                Report No.: SZEM190801719602
                                                                Page:       5 of 8




4.2 Test Location
    All tests were performed at:
    SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch
    No. 1 Workshop, M-10, Middle section, Science & Technology Park, Shenzhen, Guangdong, China
    518057
    Telephone: +86 (0) 755 2601 2053    Fax: +86 (0) 755 2671 0594
    No tests were sub-contracted.

4.3 Test Facility
    The test facility is recognized, certified, or accredited by the following organizations:
    • CNAS (No. CNAS L2929)
    CNAS has accredited SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch EMC
    Lab 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.
    • A2LA (Certificate No. 3816.01)
    SGS-CSTC Standards Technical Services Co., Ltd., Shenzhen EMC Laboratory is accredited by the
    American Association for Laboratory Accreditation(A2LA). Certificate No. 3816.01.
    • VCCI
    The 3m Fully-anechoic chamber for above 1GHz, 10m Semi-anechoic chamber for below 1GHz,
    Shielded Room for Mains Port Conducted Interference Measurement and Telecommunication Port
    Conducted Interference Measurement of SGS-CSTC Standards Technical Services Co., Ltd. have been
    registered in accordance with the Regulations for Voluntary Control Measures with Registration No.: G-
    20026, R-14188, C-12383 and T-11153 respectively.
    • FCC –Designation Number: CN1178
    SGS-CSTC Standards Technical Services Co., Ltd., Shenzhen EMC Laboratory has been recognized
    as an accredited testing laboratory.
    Designation Number: CN1178. Test Firm Registration Number: 406779.
    • Innovation, Science and Economic Development Canada
    SGS-CSTC Standards Technical Services Co., Ltd., Shenzhen EMC Laboratory has been recognized
    by ISED as an accredited testing laboratory.
    CAB identifier: CN0006.
    IC#: 4620C.


                   SGS-CSTC Standards Technical Services Co., Ltd.
                   Shenzhen Branch
                                             Report No.: SZEM190801719602
                                             Page:       6 of 8


4.4 Deviation from Standards
   None.

4.5 Abnormalities from Standard Conditions
   None.

4.6 Other Information Requested by the Customer
   None.


                                 SGS-CSTC Standards Technical Services Co., Ltd.
                                 Shenzhen Branch
                                                                     Report No.: SZEM190801719602
                                                                     Page:       7 of 8


5       RF Exposure Evaluation

5.1     RF Exposure Compliance Requirement
5.1.1 Limits
        According to FCC Part1.1310: The criteria listed in the following table shall be used to evaluate the
        environment impact of human exposure to radio frequency (RF) radiation as specified in part1.1307(b)




F= Frequency in MHz
Friis Formula
Friis transmission formula: Pd = (Pout*G)/(4* Pi * R 2)
Where
Pd = power density in mW/cm2
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
Pd id the limit of MPE, 1 mW/cm2 . If we know the maximum gain of the antenna and the total power input to
the antenna, through the calculation, we will know the distance r where the MPE limit is reached.

5.1.2 Test Procedure
        Software provided by client enabled the EUT to transmit and receive data at lowest, middle and
        highest channel individually.


                               SGS-CSTC Standards Technical Services Co., Ltd.
                               Shenzhen Branch
                                                                    Report No.: SZEM190801719602
                                                                    Page:       8 of 8


4.1.3 EUT RF Exposure Evaluation

Antenna Gain: 0dBi
Antenna Gain: The maximum Gain measured in fully anechoic chamber is 1.00 in linear scale.
Output Power Into Antenna & RF Exposure Evaluation Distance:


 Channel       Frequency    Max Conducted        Output Power        Power Density       Limit    Result
                 (MHz)        Peak Output          to Antenna         at R = 20 cm
                             Power (dBm)              (mW)             (mW/cm2)
  Highest        2462             18.54               71.45              0.0142           1.0      PASS


Note: Refer to report No. SZEM190801719601 for EUT test Max Conducted Peak Output Power value.
The distance r (4th column) calculated from the Fries transmission formula is far greater than 20 cm separation
requirement.



                                            - End of the Report -



Document Created: 2019-09-04 00:42:02
Document Modified: 2019-09-04 00:42:02

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