RF Exposure Info (MPE) rev

FCC ID: KA2IR1950A1

RF Exposure Info

Download: PDF
FCCID_4401566

                                                           RF Exposure Report

                       Report No.: SA190604C42A

                             FCC ID: KA2IR1950A1

               Original FCC ID: KA2IR1750A1

                       Test Model: DIR-1950

                 Received Date: Jun. 04, 2019

                         Test Date: Jun. 21 ~ Jul. 04, 2019

                     Issued Date: Jul. 08, 2019


                         Applicant: D-Link Corporation

                          Address: 17595 Mt. Herrmann, Fountain Valley, California, United States, 92708


                        Issued By: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch

                    Lab Address: No. 47-2, 14th Ling, Chia Pau Vil., Lin Kou Dist., New Taipei City, Taiwan
                                 (R.O.C.)
                  Test Location: No. 19, Hwa Ya 2nd Rd., Wen Hwa Vil., Kwei Shan Dist., Taoyuan City
                                 33383, TAIWAN (R.O.C.)
         FCC Registration / 788550 / TW0003
       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 ourfindings 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 TAF or any government agencies.

Report No.: SA190604C42A                                             Page No. 1 / 6                                             Report Format Version: 6.1.1
Reference No.: 190604C45


                                                                   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
3         Calculation Result of Maximum Conducted Power........................................................................... 6




Report No.: SA190604C42A                                             Page No. 2 / 6                                              Report Format Version: 6.1.1
Reference No.: 190604C45


                                         Release Control Record


Issue No.             Description                                        Date Issued
SA190604C42A          Original release                                   Jul. 08, 2019




Report No.: SA190604C42A                    Page No. 3 / 6        Report Format Version: 6.1.1
Reference No.: 190604C45


1    Certificate of Conformity


            Product: AC1900 Gigabit Wi-Fi Router

              Brand: D-Link

        Test Model: DIR-1950

    Sample Status: Engineering sample

          Applicant: D-Link Corporation

          Test Date: Jun. 21 ~ Jul. 04, 2019

         Standards: FCC Part 2 (Section 2.1091)
                           KDB 447498 D01 General RF Exposure Guidance v06



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 RF characteristics under the conditions specified in this report.




      Prepared by :                                               , Date:        Jul. 08, 2019
                              Celine Chou / Senior Specialist




     Approved by :                                                , Date:        Jul. 08, 2019
                              Bruce Chen / Project Engineer




Report No.: SA190604C42A                         Page No. 4 / 6                       Report Format Version: 6.1.1
Reference No.: 190604C45


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

       300-1500                  …                    …                   F/1500                  30

     1500-100,000                …                    …                    1.0                    30
F = Frequency in MHz

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 28cm away from the body of the user. So,
this device is classified as Mobile Device.




Report No.: SA190604C42A                      Page No. 5 / 6                         Report Format Version: 6.1.1
Reference No.: 190604C45


3    Calculation Result of Maximum Conducted Power
Frequency Band        Max Power       Antenna Gain             Distance    Power Density            Limit
    (MHz)               (dBm)             (dBi)                  (cm)        (mW/cm2)             (mW/cm2)
                                                   CDD Mode

    2412-2462              29.08            8.77                 28            0.619                   1

    5180-5240              25.34            9.77                 28            0.329                   1

    5745-5825              24.53            9.77                 28            0.273                   1

                                             Beamforming Mode

    2412-2462              26.99            8.77                 28            0.382                   1

    5180-5240              25.34            9.77                 28            0.329                   1

    5745-5825              24.53            9.77                 28            0.273                   1
Note: Determining compliance based on the results of the compliance measurement, not taking into account
measurement instrumentation uncertainty.

2.4GHz: Directional gain = 4dBi + 10log(3) = 8.77dBi
5GHz: Directional gain = 5dBi + 10log(3) = 9.77dBi

Conclusion:
Both of the WLAN 2.4G & WLAN 5G can transmit simultaneously, the formula of calculated the MPE is:
CPD1 / LPD1 + CPD2 / LPD2 + ……etc. < 1
CPD = Calculation power density
LPD = Limit of power density


2.4G + 5G = 0.619 / 1 + 0.329 / 1 = 0.948

Therefore the maximum calculations of above situations are less than the “1” limit.



---END---




Report No.: SA190604C42A                      Page No. 6 / 6                           Report Format Version: 6.1.1
Reference No.: 190604C45



Document Created: 2019-08-05 17:37:55
Document Modified: 2019-08-05 17:37:55

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