RF Exposure Info (MPE)

FCC ID: NKR-VZJS8V

RF Exposure Info

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FCCID_4368543

                                                           RF Exposure Report

                       Report No.: SA190603E08A

                            FCC ID: NKR-VZJS8V

                       Test Model: JS8V

                 Received Date: June 12, 2019

                         Test Date: July 02, 2019

                     Issued Date: July 19, 2019


                         Applicant: Wistron NeWeb Corp.

                          Address: 20 Park Avenue II, Hsinchu Science Park,Hsinchu 308, 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 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.
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                                                                   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




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                                          Release Control Record


Issue No.             Description                                         Date Issued
SA190603E08A          Original release.                                   July 19, 2019




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1    Certificate of Conformity


            Product: Stream TV

              Brand: Verizon

        Test Model: JS8V

    Sample Status: ENGINEERING SAMPLE

          Applicant: Wistron NeWeb Corp.

          Test Date: July 02, 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:         July 19, 2019
                                  Wendy Wu / Specialist




     Approved by :                                              , Date:         July 19, 2019
                                  May Chen / Manager




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2      RF Exposure

2.1      Limits for Maximum Permissible Exposure (MPE)

    Frequency Range          Electric Field     Magnetic Field       Power Density        Average Time
         (MHz)              Strength (V/m)      Strength (A/m)         (mW/cm2)             (minutes)
                             Limits For General Population / Uncontrolled Exposure
        0.3-1.34                 614                  1.63               (100)*                  30
         1.34-30                824/f                2.19/f             (180/f2)*                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

Pd = (Pout*G) / (4*pi*r2)
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



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.




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2.4    Antenna Gain


                                                  WLAN
                       Antenna Net Gain   Frequency range
      Chain No.                                                    Antenna type        Connector type
                             (dBi)              (GHz)
                             3.62            2.4~2.4835
                             3.57            5.15~5.25
       Chain 0               3.63            5.25~5.35      On board printed antenna        none
                             2.50            5.47~5.725
                             2.88            5.725~5.85
                             5.36            2.4~2.4835
                             3.26            5.15~5.25
       Chain 1               3.26            5.25~5.35      On board printed antenna        none
                             3.75            5.47~5.725
                             4.22            5.725~5.85
                                                 Bluetooth
                              Frequency range
 Antenna Net Gain (dBi)                                    Antenna type              Connector type
                                    (GHz)
           2.39                  2.4~2.4835          On board printed antenna            none




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2.5     Calculation Result of Maximum Conducted Power

                    Evaluation
      Operation                  Max Power    Antenna Gain    Distance    Power Density        Limit
                    Frequency
       Mode                        (mW)           (dBi)         (cm)        (mW/cm2)         (mW/cm2)
                      (MHz)
 WLAN 2.4GHz           2437       662.658           7.54         20          0.74820               1
  WLAN 5GHz
                      5230          247.256             6.43                20          0.21621 1
    (U-NII-1)
  WLAN 5GHz
                      5260          216.553             6.46                20          0.19067 1
   (U-NII-2A)
  WLAN 5GHz
                      5580          210.929             6.16                20          0.17333 1
   (U-NII-2C)
  WLAN 5GHz
                      5825          424.896             6.59                20          0.38549 1
    (U-NII-3)
    Bluetooth
                      2441          15.241              2.39                20          0.00526 1
   (BT-EDR)
NOTE:
1. Determining compliance based on the results of the compliance measurement, not taking into account
    measurement instrumentation uncertainty.
2. 2.4GHz: The directional gain = 10 log[(10Chain0/20 + 10Chain1/20)2 / 2] = 7.54dBi
    5GHz:
    U-NII-1: The directional gain = 10 log[(10Chain0/20 + 10Chain1/20)2 / 2] = 6.43dB
    U-NII-2A: The directional gain = 10 log[(10Chain0/20 + 10Chain1/20)2 / 2] = 6.46dBi
    U-NII-2C: The directional gain = 10 log[(10Chain0/20 + 10Chain1/20)2 / 2] = 6.16dBi
    U-NII-3: The directional gain = 10 log[(10Chain0/20 + 10Chain1/20)2 / 2] = 6.59dBi


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 + Bluetooth = 0.74820 / 1 + 0.00526 / 1 = 0.75346
WLAN 5GHz + Bluetooth = 0.38549 / 1 + 0.00526 / 1 = 0.39075
Therefore the maximum calculations of above situations are less than the “1” limit.



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Document Created: 2019-07-23 23:29:19
Document Modified: 2019-07-23 23:29:19

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