Test Report DTS

FCC ID: 2ACN7WS804

Test Report

Download: PDF
FCCID_3226849

I#]
        TEST
                                                                                         Model: WS804




                                    FCC Part 15C
                 Measurement and Test Report
                                               For

                        Shenzhen Fitcare Electronics Co., Ltd

  6th Floor(south), Building A, Dingxin Science Park, 67 District, Bao‘an,

                                       Shenzhen, China


                                 FCC ID: 2ACN7ZWS804


       FCC Rule(s):                         Part

       Product Description:                 Body Scale

       Tested Model:                        WS804

       Report No.:                          STR161182541—1

       Tested Date:                         2016—11—25 to 2016—12—09

       Issued Date:                         2016—12—09
                                                                             Terry\i‘w
       Tested By:                           Terry Su / Engineer

       Reviewed By:                         Silin Chen / EMC Manager        slin chen

       Approved & Authorized By:            Jandy So / PSQ Manager
                                                                            —lgso
       Prepared By:
                              Shenzhen SEM.Test Technology Co., Ltd.
                             1/F, Building A, Hongwei Industrial Park, Liuxian 2nd Road,
                             Bao‘an District, Shenzhen, P.R.C. (518101)
           Tel.: +86—755—33663308   Fax.: +86—755—33663309   Website: www.semtest.com.cn




   Note: This test report is limited to the above client company and the product model only. It
   may not be duplicated without prior permitted by Shenzhen SEM.Test Technology Co., Ltd.



REPORT NO.: STR161182541—1                        PAGE 1 OF 28                    FCC PART 15.247


                                                                                                                                                         Model: WS804


TABLE OF CONTENTS
1. GENERAL INFORMATION ...................................................................................................................................3
   1.2 TEST STANDARDS...................................................................................................................................................4
   1.3 TEST METHODOLOGY .............................................................................................................................................4
   1.4 TEST FACILITY .......................................................................................................................................................4
   1.5 EUT SETUP AND TEST MODE .................................................................................................................................5
   1.6 MEASUREMENT UNCERTAINTY ..............................................................................................................................5
   1.7 TEST EQUIPMENT LIST AND DETAILS .....................................................................................................................6
2. SUMMARY OF TEST RESULTS ...........................................................................................................................7
3. RF EXPOSURE .........................................................................................................................................................8
   3.1 STANDARD APPLICABLE.........................................................................................................................................8
   3.2 TEST RESULT..........................................................................................................................................................8
4. ANTENNA REQUIREMENT ..................................................................................................................................9
   4.1 STANDARD APPLICABLE.........................................................................................................................................9
   4.2 EVALUATION INFORMATION ..................................................................................................................................9
5. POWER SPECTRAL DENSITY ...........................................................................................................................10
   5.1 STANDARD APPLICABLE.......................................................................................................................................10
   5.2 TEST PROCEDURE .................................................................................................................................................10
   5.3 ENVIRONMENTAL CONDITIONS ............................................................................................................................10
   5.4 SUMMARY OF TEST RESULTS/PLOTS ....................................................................................................................10
6. 6DB BANDWIDTH .................................................................................................................................................13
   6.1 STANDARD APPLICABLE.......................................................................................................................................13
   6.2 TEST PROCEDURE .................................................................................................................................................13
   6.3 ENVIRONMENTAL CONDITIONS ............................................................................................................................13
   6.4 SUMMARY OF TEST RESULTS/PLOTS ....................................................................................................................13
7. RF OUTPUT POWER ............................................................................................................................................16
   7.1 STANDARD APPLICABLE.......................................................................................................................................16
   7.2 TEST PROCEDURE .................................................................................................................................................16
   7.3 ENVIRONMENTAL CONDITIONS ............................................................................................................................16
   7.4 SUMMARY OF TEST RESULTS/PLOTS ....................................................................................................................16
8. FIELD STRENGTH OF SPURIOUS EMISSIONS .............................................................................................17
   8.1 STANDARD APPLICABLE.......................................................................................................................................17
   8.2 TEST PROCEDURE .................................................................................................................................................17
   8.3 CORRECTED AMPLITUDE & MARGIN CALCULATION ............................................................................................18
   8.4 ENVIRONMENTAL CONDITIONS ............................................................................................................................18
   8.5 SUMMARY OF TEST RESULTS/PLOTS ....................................................................................................................19
9. OUT OF BAND EMISSIONS .................................................................................................................................26
   9.1 STANDARD APPLICABLE.......................................................................................................................................26
   9.2 TEST PROCEDURE .................................................................................................................................................26
   9.3 ENVIRONMENTAL CONDITIONS ............................................................................................................................27
   9.4 SUMMARY OF TEST RESULTS/PLOTS ....................................................................................................................27




REPORT NO.: STR16118254I-1                                                              PAGE 2 OF 28                                             FCC PART 15.247


                                                                                                    Model: WS804


1. GENERAL INFORMATION

  Client Information
  Applicant:                             Shenzhen Fitcare Electronics Co., Ltd
  Address of applicant:                  6th Floor(south), Building A, Dingxin Science Park, 67
                                         District, Bao’an, Shenzhen, China

  Manufacturer:                          Shenzhen Fitcare Electronics Co., Ltd
  Address of manufacturer:               6th Floor(south), Building A, Dingxin Science Park, 67
                                         District, Bao’an, Shenzhen, China

  General Description of EUT
  Product Name:                          Body Scale
  Brand Name:                            /
  Model No.:                             WS804
                                         JJ04556, JJ04557, JJ04558, JJ04559, JJ04560, WS802,
  Adding Model(s):
                                         WS803, WS805, WS806
  Rated Voltage:                         DC 3V

  Note: The test data is gathered from a production sample provided by the manufacturer. The appearance of
  others models listed in the report is different from main-test model WS804, but the circuit and the electronic
  construction do not change, declared by the manufacturer.


  Technical Characteristics of EUT
  Bluetooth Version:             V4.0 (BLE mode)
  Frequency Range:               2402-2480MHz
  RF Output Power:               -3.451dBm (Conducted)
  Data Rate:                     1Mbps
  Modulation:                    GFSK
  Quantity of Channels:          40
  Channel Separation:            2MHz
  Type of Antenna:               Integral
  Antenna Gain:                  -0.6dBi
  Lowest Internal Frequency:     32.768KHz




REPORT NO.: STR16118254I-1                               PAGE 3 OF 28                         FCC PART 15.247


                                                                                                Model: WS804



1.2 Test Standards

The following report is prepared on behalf of the Shenzhen Fitcare Electronics Co., Ltd in accordance with FCC
Part 15, Subpart C, and section 15.203, 15.205, 15.207, 15.209 and 15.247 of the Federal Communication
Commissions rules.

The objective is to determine compliance with FCC Part 15, Subpart C, and section 15.203, 15.205, 15.207,
15.209 and 15.247 of the Federal Communication Commissions rules.

Maintenance of compliance is the responsibility of the manufacturer. Any modification of the product, which
result in lowering the emission, should be checked to ensure compliance has been maintained.

1.3 Test Methodology

All measurements contained in this report were conducted with ANSI C63.10-2013, American National Standard
for Testing Unlicensed Wireless Devices, and ANSI C63.4-2014, American National Standard for Methods of
Measurement of Radio-Noise Emissions from Low-Voltage Electrical and Electronic Equipment in the range of 9
kHz to 40 GHz. The measurement guide KDB 558074 D01 v03r05 for digital transmission systems shall be
performed also.

1.4 Test Facility

FCC – Registration No.: 934118
Shenzhen SEM.Test Technology Co., Ltd. EMC Laboratory has been registered and fully described in a report
filed with the (FCC) Federal Communications Commission. The acceptance letter from the FCC is maintained in
our files and the Registration is 934118.

Industry Canada (IC) Registration No.: 11464A
The 3m Semi-anechoic chamber of Shenzhen SEM.Test Technology Co., Ltd. has been registered by Certification
and Engineering Bureau of Industry Canada for radio equipment testing with Registration No.: 11464A.

CNAS Registration No.: L4062
Shenzhen SEM.Test Technology Co., Ltd. is a testing organization accredited by China National Accreditation
Service for Conformity Assessment (CNAS) according to ISO/IEC 17025. The accreditation certificate number is
L4062. All measurement facilities used to collect the measurement data are located at 1/F, Building A, Hongwei
Industrial Park, Liuxian 2nd Road, Bao’an District, Shenzhen, P.R.C (518101).




REPORT NO.: STR16118254I-1                             PAGE 4 OF 28                        FCC PART 15.247


I#]
         TEST
                                                                                                     Model: WS804




1.5 EUT Setup and Test Mode

The EUT was operated in the engineering mode to fix the Tx frequency that was for the purpose of the
measurements. All testing shall be performed under maximum output power condition, and to measure its highest
possible emissions level, more detailed description as follows:


      Test Mode List
       Test Mode                   Description                                 Remark
          TM1                      GFSK(BLE)                       2402MHz, 2442MHz, 2480MHz

      EUT Cable List and Details
         Cable Description              Length (m)        Shielded/Unshielded     With / Without Ferrite
                   /                         /                       /                        /


      Special Cable List and Details
         Cable Description              Length (m)        Shielded/Unshielded     With / Without Ferrite
                   /                         /                       /                        /


      Auxiliary Equipment List and Details
             Description               Manufacturer               Model                 Serial Number
                   /                         /                       /                        /

1.6 Measurement Uncertainty

 Measurement uncertainty
                       Parameter                                  Conditions                      Uncertainty
                 RF Output Power                                  Conducted                        +0.42dB
                Occupied Bandwidth                                Conducted                         +1.5%
            Power Spectral Density                                Conducted                        +1.8dB
         Conducted Spurious Emission                              Conducted                        +2.170B
             Conducted Emissions                                  Conducted                        +2.88dB
        Transmitter Spurious Emissions                            Radiated                         +5.10B




REPORT NO.: STR161182541I—1                               PAGE 5 OF 28                        FCC PART 15.247


                                                                                       Model: WS804



1.7 Test Equipment List and Details

   No.        Description        Manufacturer      Model          Serial No.   Cal Date   Due Date
SEMT-1072   Spectrum Analyzer      Agilent         E4407B        MY41440400    2016-06-04 2017-06-03
SEMT-1031   Spectrum Analyzer   Rohde & Schwarz     FSP30         836079/035   2016-06-04 2017-06-03
SEMT-1007   EMI Test Receiver   Rohde & Schwarz     ESVB          825471/005   2016-06-04 2017-06-03
SEMT-1008       Amplifier           Agilent         8447F        3113A06717    2016-06-04 2017-06-03
SEMT-1043       Amplifier            C&D          PAP-1G18          2002       2016-06-04 2017-06-03
SEMT-1011   Broadband Antenna    Schwarz beck     VULB9163         9163-333    2016-06-04 2017-06-03
SEMT-1042     Horn Antenna           ETS            3117          00086197     2016-06-04 2017-06-03
SEMT-1121     Horn Antenna        Schwarzbeck     BBHA 9170      BBHA9170582   2016-06-04 2017-06-03
SEMT-1069     Loop Antenna       Schwarz beck     FMZB 1516         9773       2016-06-04 2017-06-03
SEMT-1001   EMI Test Receiver   Rohde & Schwarz     ESPI           101611      2016-06-04 2017-06-03
SEMT-1003        L.I.S.N         Schwarz beck     NSLK8126         8126-224    2016-06-04 2017-06-03
SEMT-1002     Pulse Limiter     Rohde & Schwarz    ESH3-Z2         100911      2016-06-04 2017-06-03




REPORT NO.: STR16118254I-1                        PAGE 6 OF 28                    FCC PART 15.247


I#]
         TEST
                                                                           Model: WS804



2. SUMMARY OF TEST RESULTS


            FCC Rules                   Description of Test Item        Result
                § 2.1093                     RF Exposure               Compliant
     § 15.203; § 15.247(b)(4)(i)         Antenna Requirement           Compliant
                §15.205               Restricted Band of Operation     Compliant
             § 15.207(a)                  Conducted Emission             N/A
             § 15.247(e)                Power Spectral Density         Compliant
           §15.247(a)(2)                    6 dB Bandwidth             Compliant
           § 15.247(b)(3)                  RF Output Power             Compliant
             § 15.209(a)                   Radiated Emission           Compliant
            § 15.247(d)            Band Edge (Out of Band Emissions)   Compliant


N/A: not applicable




REPORT NO.: STR161182541—1                     PAGE 7 OF 28            FCC PART 15.247


I#]
         TEST                                                                                   Model: WS804



3. RF Exposure

3.1 Standard Applicable

According to § 1.1307 and § 2.1093, the portable transmitter must comply the RF exposure requirements.

3.2 Test Result

This product complied with the requirement of the RF exposure, please see the RF Exposure Report.




REPORT NO.: STR161182541—1                             PAGE 8 OF 28                        FCC PART 15.247


                                                                                                     Model: WS804


4. Antenna Requirement

4.1 Standard Applicable

According to FCC Part 15.203, an intentional radiator shall be designed to ensure that no antenna other than that
furnished by the responsible party shall be used with the device. The use of a permanently attached antenna or of
an antenna that uses a unique coupling to the intentional radiator shall be considered sufficient to comply with the
provisions of this section.

4.2 Evaluation Information

This product has a PCB antenna, fulfill the requirement of this section.




REPORT NO.: STR16118254I-1                                PAGE 9 OF 28                         FCC PART 15.247


I#]
          TEST                                                                                      Model: WS804



5. Power Spectral Density

5.1 Standard Applicable

According to 15.247(a)(1)(11), For digitally modulated systems, the power spectral density conducted from the
intentional radiator to the antenna shall not be greater than 8 dBm in any 3 kHz band during any time interval of
continuous transmission.


5.2 Test Procedure


According to the KDB 558074 DO1 v03r05, the test method of power spectral density as below:


a) Set analyzer center frequency to DTS channel center frequency.
b) Set the span to 1.5 times the DTS bandwidth.
c) Set the RBW to: 3 kHz =< RBW = 100 kHz.
d) Setthe VBW >z 3 X RBW.
e) Detector = peak.
f) Sweep time = auto couple.
g) Trace mode = max hold.
h) Allow trace to fully stabilize.
1) Use the peak marker function to determine the maximum amplitude level within the RBW.
j) If measured value exceeds limit, reduce RBW (no less than 3 kHz) and repeat.


5.3 Environmental Conditions


 || Temperature:            || 26° C                                         ||

 | Relative Humidity:       _ | 54%                                          |
 || ATM Pressure:           || 1011 mbar                                     ||



5.4 Summary of Test Results/Plots



                                       Test Channel      Power Spectral Density               Limit
          Test Mode
                                            MHz                dBm/3kHz                    dBm/3kHz

                                            2402                    —15.48                      8

         GFSK(BLE)                          2442                    —17.86                      8

                                            2480                    —20.67                      8


Please refer to the following test plots:




REPORT NO.: STR161182541—1                              PAGE 10 OF 28                         FCC PART 15.247


                                                Model: WS804



Low Channel




Middle Channel




REPORT NO.: STR16118254I-1   PAGE 11 OF 28   FCC PART 15.247


                                                Model: WS804



High Channel




REPORT NO.: STR16118254I-1   PAGE 12 OF 28   FCC PART 15.247


I#]
           TEST                                                                                  Model: WS804



6. 6dB Bandwidth


6.1 Standard Applicable

According to 15.247(a)(2). Systems using digital modulation techniques may operate in the 902—928 MHz,
2400—2483.5 MHz, and 5725—5850 MHz bands. The minimum 6 dB bandwidth shall be at least 500 kHz.


6.2 Test Procedure

a) Set RBW = 100 kHz..
b) Set the video bandwidth (VBW) >z 3 X RBW.
c) Detector = Peak.
d) Trace mode = max hold.
e) Sweep = auto couple.
£f) Allow the trace to stabilize.
g) Measure the maximum width of the emission that is constrained by the frequencies associated with the two
  outermost amplitude points (upper and lower frequencies) that are attenuated by 6 dB relative to the maximum
  level measured in the fundamental emission.


6.3 Environmental Conditions


  || Temperature:            || 25° C                                   ||
  | Relative Humidity:       _ | 53%                                    |
  || ATM Pressure:           || 1018 mbar                               ||


6.4 Summary of Test Results/Plots

                              Test Channel      6 dB Bandwidth       99% Bandwidth               Limit
       Test Mode
                                       MHz           kHz                     kHz                  kHz

                                       2402         648.666                  10772               >500
      GFSK(BLE)                        2442         6A5.792                  10864               >500
                                       2480         650.451                  11576               >500


Please refer to the following test plots:




REPORT NO.: STR161182541—1                              PAGE 13 OF 28                        FCC PART 15.247


                                                Model: WS804



For BLE
Low Channel:




Middle Channel:




REPORT NO.: STR16118254I-1   PAGE 14 OF 28   FCC PART 15.247


                                                Model: WS804



High Channel:




REPORT NO.: STR16118254I-1   PAGE 15 OF 28   FCC PART 15.247


I#]
          TEST
                                                                                              Model: WS804



7. RF Output Power

7.1 Standard Applicable

According to 15.247(b)(3). For systems using digital modulation in the 902—928 MHz, 2400—2483.5 MHz, and
5725—5850 MHz bands: 1 Watt.


7.2 Test Procedure


According to section KDB—558074 DO1 v03r05 section 9.1.1, this procedure shall be used when the measurement
instrument has available a resolution bandwidth that is greater than the DTS bandwidth.


a) Set the RBW > DTS bandwidth.
b) Set VBW >z 3 X RBW.
c) Set span >z 3x RBW
d) Sweep time = auto couple.
e) Detector = peak.
£) Trace mode = max hold.
g) Allow trace to fully stabilize.
h) Use peak marker function to determine the peak amplitude level.

7.3 Environmental Conditions


 || Temperature:
 | Relative Humidity:
 || ATM Pressure:



7.4 Summary of Test Results/Plots

                                     Frequency          Reading          Output Power        Limit
              Test Mode
                                        MHz               dBm                 mW              mW
                                        2402              —3.451               0.45           1000
             GFSK(BLE)                  2442             —4.705                0.34           1000
                                        2480             —6.322                0.23           1000


Note: the antenna gain of —0.6dBi less than 6dBi maximum permission antenna gain value based on 1 watt peak
output power limit.




REPORT NO.: STR161182541—1                               PAGE 16 OF 28                    FCC PART 15.247


                                                                                                     Model: WS804


8. Field Strength of Spurious Emissions

8.1 Standard Applicable

According to §15.247(d), in any 100 kHz bandwidth outside the frequency band in which the spread spectrum or
digitally modulated intentional radiator is operating, the radio frequency power that is produced by the intentional
radiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level
of the desired power, based on either an RF conducted or a radiated measurement, provided the transmitter
demonstrates compliance with the peak conducted power limits. If the transmitter complies with the conducted
power limits based on the use of RMS averaging over a time interval, as permitted under paragraph (b)(3) of this
section, the attenuation required under this paragraph shall be 30 dB instead of 20 dB. Attenuation below the
general limits specified in §15.209(a) is not required. In addition, radiated emissions which fall in the restricted
bands, as defined in §15.205(a), must also comply with the radiated emission limits specified in §15.209(a).

The emission limit in this paragraph is based on measurement instrumentation employing an average detector. The
provisions in §15.35 for limiting peak emissions apply. Spurious Radiated Emissions measurements starting
below or at the lowest crystal frequency.

8.2 Test Procedure

The setup of EUT is according with per ANSI C63.10-2013 measurement procedure. The specification used was
with the FCC Part 15.205 15.247(a) and FCC Part 15.209 Limit.
The external I/O cables were draped along the test table and formed a bundle 30 to 40 cm long in the middle.
The spacing between the peripherals was 10 cm.




REPORT NO.: STR16118254I-1                                PAGE 17 OF 28                         FCC PART 15.247


                                                                                                       Model: WS804


                                                                  Antenna
                                                                   Tower




                                                                              1m-4m
                                              3m

                  EUT SYS              1.5m



                  Turntable
                   Table                                                                      To EMI Receiver



                                                   Ground Plane

Frequency :9kHz-30MHz                         Frequency :30MHz-1GHz                   Frequency :Above 1GHz
RBW=10KHz,                                    RBW=120KHz,                             RBW=1MHz,
VBW =30KHz                                    VBW=300KHz                              VBW=3MHz(Peak), 10Hz(AV)
Sweep time= Auto                              Sweep time= Auto                        Sweep time= Auto
Trace = max hold                              Trace = max hold                        Trace = max hold
Detector function = peak                      Detector function = peak, QP             Detector function = peak, AV

8.3 Corrected Amplitude & Margin Calculation

The Corrected Amplitude is calculated by adding the Antenna Factor and the Cable Factor, and subtracting the
Amplifier Gain from the Amplitude reading. The basic equation is as follows:

                        Corr. Ampl. = Indicated Reading + Ant. Factor + Cable Loss – Ampl. Gain

The “Margin” column of the following data tables indicates the degree of compliance with the applicable limit.
For example, a margin of -6dBV means the emission is 6dBV below the maximum limit. The equation for
margin calculation is as follows:

                                        Margin = Corr. Ampl. – FCC Part 15 Limit

8.4 Environmental Conditions

   Temperature:                25 C
   Relative Humidity:          52
   ATM Pressure:               1012 mbar




REPORT NO.: STR16118254I-1                                    PAGE 18 OF 28                        FCC PART 15.247


I#]
                TEST                                                                                                                           Model: WS804




8.5 Summary of Test Results/Plots

According to the data below, the FCC Part 15.205, 15.209 and 15.247 standards, and had the worst cases:


             Note: this EUT was tested in 3 orthogonal positions and the worst case position data was reported.


         Plot of Radiated Emissions Test Data
         EUT:                               Body Scale
         Tested Model:                      WS804
         Operating Condition:               Transmitting—Low channel (2402MHz)
         Comment:                           DC 3V


         Test Specification:                Horizontal


80.0        dBu¥/m
                           |        |                                                                                                  LimiH :        ——
oo o
B0( encb nc honc n n bonn n hob nnbo nnnnnnn en nnnnnnnn onbrnnnnnnnnnnechnnsnssecdensseecdensee dn d cboechss
80 c efdhehhochemmmmmmmm d heeh d ecd db d L

                   o       o_                                                                                                           3
BM [ cce nc nbo en donnnnbnnnnbnnnbnnnbnnnnnnnnnnnnnnnnnnnnnnndnn en deesgoccienn io. . abe Ababit tb
                1 _        i  i                                                                        :
                  i        Do2                                                   :
20 |—— uL. o e ons ponegie n n > >>>>>> 4 00.                                          ul oc cb cceb cce be cce e ds se de sc bes cb es
                   |       f         :             U                        P
10                             ......enc hbecocbeocbecsfeseeeeen enc enenennencheeenenen cce obpecennenenfpecsenenfececnceneendenechecefdecs>

0ee en ncb n en enb nn en lonn en bnnnnbnnnbonndnnnnnnnnnnennnnnnnnneedonnnnnnnesencbnnseesesndensssebensendorsedeeechoachsss
O P c d dscb cb hob enc cce hocseccceeceecbo cce dsb e db ds
~20.11                              POL                                                         :            |          |         $O       P     P     U
     30.000       40       50       60   70 80                                                  300          400        500       600 700            1000.0 MHz


No.           Frequency           Reading         Correct         Result             Limit          Margin         Degree              Height          Remark
                 (MHz)           (dBuV/m)          dB/m        (dBuV/m)         (dBuV/m)             (dB)          (          )         (cm)
     1          37.0249             17.68           4.49          22.17              40.00          —17.83             50                100               peak
     2          54.8348             15.31           5.03          20.34              40.00          —19.66             167               100               peak
     3          89.2764             15.30           3.28           18.58             43.50          —24.92             265               100               peak
     4          186.4409            14.51           2.73           17.24             43.50          —26.26             68                100               peak
     5          346.8092            15.94          11.56          27.50              46.00          —18.50             310               100               peak
     6          665.8035            15.80          17.90          33.70              46.00          —12.30             122               100               peak




REPORT NO.: STR161182541—1                                                   PAGE 19 OF 28                                             FCC PART 15.247


               TEST                                                                                                                                      Model: WS804




     Test Specification:                      Vertical


80.0        dBu¥y‘/m
                                                                                                                                                LimiH]          ——
PO | d d db oboe
60|d
80|efsdfdoh{
a0                 i PXo o e
                   o       d      d       o d o                                           f               f            o          e         o       8 1G
30|ddbbaagh_mt
         1. 0|      b&            ol      P       ob    L      G                       :                   :            :          :      Po   ob   ob d
20 }———— i e o hars "g                                       C M adoacyotonnn~~ m n n ol glh t o Pn nc en ob en n n n n d en en n d en t ob en d —be——¢——>

10| d dbe
M        h cssc cccdoneseecboceeedoceeadboceaboea dn eb en en e en en e e e e e h e e e e dn e e e e e hn e e e e e e e dn e e e h e e h e e


AU |ecccescedesee enc bene se cbeeeeefeseobesebescbe ce ce e en enc en nc en en encb n enc en enc enc becsee ce en dessseeebecesecpeceedecesfecedecs

~20.0              f       f      1O      P       P     P                                 :               :            f          f         1Ob            P     c
     30.000       40       50     60    70 80                                                             300          400        500       600 700            1000.0 MHz


No.           Frequency         Reading                Correct            Result              Limit           Margin         Degree             Height           Remark
                (MHz)           (dBuV/m)               dB/m            (dBuV/m)          (dBuV/m)              (dB)          (          )        (cm)
     1         37.1550            16.21                     4.51          20.72               40.00           —19.28             164              100                peak
     2         53.1313            15.61                     5.06          20.67               40.00           —19.33             273              100                peak
     3         90.5374            15.12                     3.49          18.61               43.50           —24.89             242              100                peak
     4         159.7844           15.67                     241           18.08               43.50           —25,42             99               100                peak
     5        392.0951            15.27                 12.33             27.60               46.00           —18.40             155              100                peak
     6        729.3583            15.74                 18.38             34.12               46.00           —11.88             193              100                peak




REPORT NO.: STR161182541—1                                                           PAGE 20 OF 28                                              FCC PART 15.247


I#]
                TEST                                                                                                                       Model: WS804




         Plot of Radiated Emissions Test Data
         EUT:                               Body Scale
         Tested Model:                      WS804
         Operating Condition:               Transmitting—Middle channel (2442MHz)
         Comment:                           DC 3V


         Test Specification:                Horizontal


80.0        dBu¥‘/m
                                                                                                                                   LimiH           ——
PD )b d dbfon en en en ncb ce n en on fen n en de ce on opemmegeemepeeng e
600|dsbddnhuhs
80|dd[
a0                 i
                   i
                   i bo d
                             _Efonn
                          ob o 4 i
                                    en en en nfenennennndens
                                              :          i
                                                             en nde: cescbc
                                                                          ce deecheco ue
S oe
                1          f      e                                          f            Ww                        o        ob       P      ob     d
20 |————— ie icecoors becopkginsonobon~—be——boscpifee cce usc c cce ooo oW¥A Do nc c c p esnscd esns se dese escb ds e cbecodecs>
             t               uin        l                 7             .              :       i         :     Po  ob   P d
10|b e dbho nnonennnnnncpennennnnfensnnnndensencpecenfecncfeccpee.
M        L css cccccdoncseecboceeedoceeaboneabeeab en ab e en en enb e e e e e h e e e dn e e e e e h e e e e e e e dn e e e h e e h e e


M fecssseseobes se esc bess en cese oc hbesechecobessbecccenseeccceeeeceecenedeccecenseececcbesceceenndecccensdeccecchesesdecenkecefecs

~20.1f             |       |      $OW   O      P    P                        |              :            |          :        $OW      P      P
     30.000       40       50    60     70 80                                               300          400        500      600 700              1000.0 MHz


No.           Frequency         Reading            Correct    Result             Limit          Margin         Degree              Height           Remark
                 (MHz)          (dBuV/m)           dB/m      (dBuV/m)       (dBuV/m)             (dB)          (         )          (cm)
     1          36.8953           16.60             4.47       21.07             40.00          —18.93             90                100                peak
     2          104.5361          15.71             4.88       20.59             43.50          —22.91             134               100                peak
     3          140.3421          14.12             3.14       17.26             43.50          —26.24             272               100                peak

     4          287.9904          14.81             11.47      26.28             46.00          —19.72             65                100                peak
     5          601.4265          13.79             18.66      32.45             46.00          —13.55             130               100                peak
     6          768.7482          15.78             17.60      33.38             46.00          —12.62             339               100                peak




REPORT NO.: STR161182541—1                                               PAGE 21 OF 28                                             FCC PART 15.247


                                                                                                  Model: WS804



  Test Specification:        Vertical




No.    Frequency        Reading    Correct    Result        Limit       Margin   Degree        Height   Remark
         (MHz)          (dBuV/m)    dB/m     (dBuV/m)     (dBuV/m)       (dB)    (         )   (cm)
 1       36.3814         17.60      4.40      22.00         40.00       -18.00       62         100      peak
 2       84.1100         21.36      2.41      23.77         40.00       -16.23       227        100      peak
 3      128.1130         14.62      4.14      18.76         43.50       -24.74       166        100      peak
 4      290.0172         14.48      11.57     26.05         46.00       -19.95       87         100      peak
 5      494.1984         15.88      13.11     28.99         46.00       -17.01       324        100      peak
 6      742.2587         16.44      18.93     35.37         46.00       -10.63       147        100      peak




REPORT NO.: STR16118254I-1                              PAGE 22 OF 28                          FCC PART 15.247


                                                                                                        Model: WS804



     Plot of Radiated Emissions Test Data
     EUT:                    Body Scale
     Tested Model:           WS804
     Operating Condition:    Transmitting-High channel (2480MHz)
     Comment:                DC 3V

     Test Specification:            Horizontal




No.      Frequency         Reading       Correct    Result        Limit       Margin   Degree        Height   Remark
           (MHz)           (dBuV/m)      dB/m      (dBuV/m)     (dBuV/m)       (dB)    (         )   (cm)
 1         36.8953          17.02         4.47      21.49         40.00       -18.51       161        100      peak
 2         66.2662          15.07         3.71      18.78         40.00       -21.22       209        100      peak
 3        130.3789          14.92         3.95      18.87         43.50       -24.63       276        100      peak
 4        295.1469          14.16         11.78     25.94         46.00       -20.06       100        100      peak
 5        441.7426          16.27         12.54     28.81         46.00       -17.19       262        100      peak
 6        701.7610          16.96         17.24     34.20         46.00       -11.80       350        100      peak




REPORT NO.: STR16118254I-1                                    PAGE 23 OF 28                          FCC PART 15.247


                                                                                                  Model: WS804



  Test Specification:        Vertical




No.    Frequency        Reading    Correct    Result        Limit       Margin   Degree        Height   Remark
         (MHz)          (dBuV/m)    dB/m     (dBuV/m)     (dBuV/m)       (dB)    (         )   (cm)
 1       35.8747         17.30      4.31      21.61         40.00       -18.39       199        100      peak
 2       84.9995         15.88      2.55      18.43         40.00       -21.57       282        100      peak
 3      162.0414         15.66      2.41      18.07         43.50       -25.43       111        100      peak
 4      306.7537         13.94      11.94     25.88         46.00       -20.12       90         100      peak
 5      570.6100         14.31      14.56     28.87         46.00       -17.13       342        100      peak
 6      763.3757         15.45      17.95     33.40         46.00       -12.60       205        100      peak




REPORT NO.: STR16118254I-1                              PAGE 24 OF 28                          FCC PART 15.247


                                                                                                     Model: WS804



   Spurious Emissions Above 1GHz

Transmitting: BLE mode:
  Frequency       Reading       Correct        Result         Limit         Margin         Polar        Detector
    (MHz)        (dBuV/m)          dB         (dBuV/m)      (dBuV/m)         (dB)           H/V
                                              Low Channel-2402MHz
     4804          58.18         -3.86          54.32           74          -19.68           H             PK
     4804          40.00         -3.86          36.14           54          -17.86           H             AV
     7206          59.09          1.1           60.19           74          -13.81           H             PK
     7206          50.00          1.1           51.10           54           -2.90           H             AV
     4804          57.27         -3.86          53.41           74          -20.59           V             PK
     4804          40.91         -3.86          37.05           54          -16.95           V             AV
     7206          56.36          1.1           57.46           74          -16.54           V             PK
     7206          43.64          1.1           44.74           54           -9.26           V             AV
                                             Middle Channel-2441MHz
     4882          59.09         -3.74          55.35           74          -18.65           H             PK
     4882          44.55         -3.74          40.81           54          -13.19           H             AV
     7323          55.45          1.47          56.92           74          -17.08           H             PK
     7323          40.00          1.47          41.47           54          -12.53           H             AV
     4882          54.55         -3.74          50.81           74          -23.19           V             PK
     4882          44.55         -3.74          40.81           54          -13.19           V             AV
     7323          60.00          1.47          61.47           74          -12.53           V             PK
     7323          43.64          1.47          45.11           54           -8.89           V             AV
                                              High Channel-2480MHz
     4960          56.36         -3.63          52.73           74          -21.27           H             PK
     4960          45.45         -3.63          41.82           54          -12.18           H             AV
     7440          57.27          1.62          58.89           74          -15.11           H             PK
     7440          50.00          1.62          51.62           54           -2.38           H             AV
     4960          55.45         -3.63          51.82           74          -22.18           V             PK
     4960          44.55         -3.63          40.92           54          -13.08           V             AV
     7440          55.45          1.62          57.07           74          -16.93           V             PK
     7440          46.36          1.62          47.98           54           -6.02           V             AV


Note: Testing is carried out with frequency rang 9kHz to the tenth harmonics, other than listed in the table above
are attenuated more than 20dB below the permissible limits or the field strength is too small to be measured.




REPORT NO.: STR16118254I-1                                PAGE 25 OF 28                           FCC PART 15.247


                                                                                                       Model: WS804


9. Out of Band Emissions

9.1 Standard Applicable

According to §15.247 (d) In any 100 kHz bandwidth outside the frequency band in which the spread spectrum or
digitally modulated intentional radiator is operating, the radio frequency power that is produced by the intentional
radiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level
of the desired power, based on either an RF conducted or a radiated measurement, provided the transmitter
demonstrates compliance with the peak conducted power limits. If the transmitter complies with the conducted
power limits based on the use of RMS averaging over a time interval, as permitted under paragraph (b)(3) of this
section, the attenuation required under this paragraph shall be 30 dB instead of 20 dB. Attenuation below the
general limits specified in §15.209(a) is not required. In addition, radiated emissions which fall in the restricted
bands, as defined in §15.205(a), must also comply with the radiated emission limits specified in §15.209(a).

9.2 Test Procedure

According to the KDB 558074 D01 v03r05, the band-edge radiated test method as follows:

Set span = wide enough to capture the peak level of the emission operating on the channel closest to the bandedge,
as well as any modulation products which fall outside of the authorized band of operation (2310MHz to 2420MHz
for low bandedge, 2460MHz to 2500MHz for the high bandedge)
RBW = 1MHz, VBW = 1MHz for peak value measured
RBW = 1MHz, VBW = 10Hz for average value measured
Sweep = auto; Detector function = peak/average; Trace = max hold
All the trace to stabilize, set the marker on the emission at the bandedge, or on the highest modulation product
outside of the band, if this level is greater than that at the bandedge. Enable the marker-delta function, then use the
marker-to-peak function to move the marker to the peak of the in-band emission. Those emission must comply
with the 15.209 limit for fall in the restricted bands listed in section 15.205. Note that the method of measurement
KDB publication number: 913591 may be used for the radiated bandedge measurements.

According to the KDB 558074 D01 v03r05, the conducted spurious emissions test method as follows:
1. Set start frequency to DTS channel edge frequency.
2. Set stop frequency so as to encompass the spectrum to be examined.
3. Set RBW = 100 kHz.
4. Set VBW ≥ 300 kHz.
5. Detector = peak.
6. Trace Mode = max hold.
7. Sweep = auto couple.
8. Allow the trace to stabilize (this may take some time, depending on the extent of the span).
9. Use peak marker function to determine maximum amplitude of all unwanted emissions within any 100 kHz
   bandwidth.
Ensure that the amplitude of all unwanted emissions outside of the authorized frequency band (excluding
restricted frequency bands) are attenuated by at least the minimum requirements specified in section 8.1. Report
the three highest emissions relative to the limit.


REPORT NO.: STR16118254I-1                                 PAGE 26 OF 28                           FCC PART 15.247


                                                                                               Model: WS804



9.3 Environmental Conditions

      Temperature:              23C
      Relative Humidity:        54
      ATM Pressure:             1011 mbar

9.4 Summary of Test Results/Plots

Bandedge (Radiated)
Lowest Bandedge-BLE
Horizontal (Worst case)




 No.       Frequency       Reading      Correct      Result       Limit       Margin       Remark
             (MHz)         (dBuV/m)    Factor(dB)   (dBuV/m)     (dBuV/m)      (dB)
  1         2310.000        36.08           -1.00    35.08        54.00       -18.92   Average Detector
            2310.000        48.12           -1.00    47.12        74.00       -26.88    Peak Detector
  2         2390.000        36.38           -0.88    35.50        54.00       -18.50   Average Detector
            2390.000        49.79           -0.88    48.91        74.00       -25.09    Peak Detector
  3         2400.000        48.33           -0.86    47.47        54.00       -6.53    Average Detector
            2400.000        61.44           -0.86    60.58        74.00       -13.42    Peak Detector




REPORT NO.: STR16118254I-1                                    PAGE 27 OF 28                FCC PART 15.247


                                                                                        Model: WS804



Highest Bandedge-BLE
Horizontal (Worst case)




 No.     Frequency        Reading   Correct    Result        Limit      Margin       Remark
           (MHz)      (dBuV/m)       dB/m     (dBuV/m)     (dBuV/m)      (dB)
  1      2483.500          41.85     -0.73     41.12         54.00      -12.88   Average Detector
         2483.500          54.85     -0.73     54.12         74.00      -19.88    Peak Detector
  2      2500.000          36.24     -0.70     35.54         54.00      -18.46   Average Detector
         2500.000          51.22     -0.70     50.52         74.00      -23.48    Peak Detector




                                       ***** END OF REPORT *****




REPORT NO.: STR16118254I-1                              PAGE 28 OF 28               FCC PART 15.247



Document Created: 2016-12-13 18:27:49
Document Modified: 2016-12-13 18:27:49

© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC