MPE Calcualtion

FCC ID: 2APLE18300398

RF Exposure Info

Download: PDF
FCCID_4354831

                                                           RF Exposure Report

                       Report No.: SA180830E03C

                            FCC ID: 2APLE18300398

                       Test Model: VMB5000

                          Revision: Rev 5

                 Received Date: Feb. 13, 2019

                         Test Date: Mar. 05, 2019

                     Issued Date: June 12, 2019


                         Applicant: Arlo Technologies, Inc.

                          Address: 2200 Faraday Ave. Suite 150, Carlsbad, CA 92008, United States


                        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.

Report No.: SA180830E03C                                             Page No. 1 / 8                                             Report Format Version: 6.1.1
Reference No.: 190213E03


                                                                   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 ............................................................................................................................... 7




Report No.: SA180830E03C                                             Page No. 2 / 8                                              Report Format Version: 6.1.1
Reference No.: 190213E03


                                          Release Control Record


Issue No.             Description                                         Date Issued
SA180830E03C          Original release.                                   June 12, 2019




Report No.: SA180830E03C                     Page No. 3 / 8        Report Format Version: 6.1.1
Reference No.: 190213E03


1    Certificate of Conformity


            Product: Alro Gen5 Entry Hub

              Brand: Arlo

        Test Model: VMB5000

           Revision: Rev 5
    Sample Status: Pre Production Unit

          Applicant: Arlo Technologies, Inc.

          Test Date: Mar. 05, 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:      June 12, 2019
                                  Wendy Wu / Specialist




     Approved by :                                               ,   Date:      June 12, 2019
                                  May Chen / Manager




Report No.: SA180830E03C                        Page No. 4 / 8                       Report Format Version: 6.1.1
Reference No.: 190213E03


2      RF Exposure

2.1     Limits for Maximum Permissible Exposure (MPE)

    Frequency Range           Electric Field     Magnetic Field       Power Density     Average Time
                                                                               2
         (MHz)               Strength (V/m)      Strength (A/m)         (mW/cm )          (minutes)
                              Limits For General Population / Uncontrolled Exposure
        0.3-1.34                  614                  1.63               (100)*               30
                                                                                 2
        1.34-30                  824/f                2.19/f             (180/f )*             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

                         2
Pd = (Pout*G) / (4*pi*r )
where
                                  2
Pd = power density in mW/cm
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.




Report No.: SA180830E03C                          Page No. 5 / 8                      Report Format Version: 6.1.1
Reference No.: 190213E03


2.4    Antenna Gain


                                          Sub-GHz
 Ant                                            Antenna Gain Frequency rang Antenna Connector
                    Brand           Model
 No.                                                (dBi)        (MHz)       type     type
  1                  NA          902P00214N0         1.5        860~930      PIFA      NA
                                           Z-Wave
 Ant                                            Antenna Gain Frequency rang Antenna Connector
                    Brand           Model
 No.                                                (dBi)        (MHz)       type     type
  1                  NA          902P00213N0         2.5        860~930      PIFA      NA
                                            Zigbee
                                                    Antenna
 Ant                                                         Frequency rang Antenna Connector
                    Brand             Model           Gain
 No.                                                             (GHz)       type     type
                                                      (dBi)
        INPAQ TECHNOLOGY CO.,
   1                           ACA-5036-A2-CC-S      3.5       2.4~2.4835      CHIP   NA
                 LTD.
                                          WLAN
                               Antenna Net Frequency
 Ant                                                                  Connector Cable Length
          Brand       Model       Gain         rang     Antenna type
 No.                                                                      type      (mm)
                                  (dBi)       (GHz)
                                   2.5     2.4~2.4835
                                   1.8      5.15~5.25
  1        NA     9 07X01052X0      2       5.25~5.35      Dipole        i-pex       75
                                   2.2     5.47~5.725
                                   1.6     5.725~5.85
                                   2.5     2.4~2.4835
                                   2.2      5.15~5.25
  2        NA    9 07X00747X19     1.2      5.25~5.35      Dipole        i-pex       90
                                   3.2     5.47~5.725
                                   3.5     5.725~5.85




Report No.: SA180830E03C               Page No. 6 / 8                    Report Format Version: 6.1.1
Reference No.: 190213E03


2.5     Calculation Result

For 5GHz (U-NII-1, U-NII-3), Zigbee, Z-Wave and Sub-GHz data was copied from the original test report
(Report No.: SA180830E03)

For 2.4GHz: The Maximum power was refer to the FCC test report (Report No.: RF180830E03E)

                    Evaluation
      Operation                     Max Power       Antenna Gain        Distance      Power Density          Limit
                    Frequency                                                                  2                   2
       Mode                           (mW)              (dBi)             (cm)          (mW/cm )           (mW/cm )
                      (MHz)
 WLAN 2.4GHz           2437           966.14             5.51              22            0.56492                 1

 WLAN U-NII-1          5200           571.179            5.01              22            0.29766                 1

WLAN U-NII-2A          5320           249.483            4.62              22            0.11885                 1

WLAN U-NII-2C          5550           249.543            5.72              22            0.15314                 1

 WLAN U-NII-3          5745           490.624            5.61              22            0.29356                 1

       Zigbee          2405           90.991              3.5              22            0.03349                 1

      Sub-GHz           915            92.89              1.5              22            0.02157               0.61
Note:
2.4GHz: Directional gain = 2.5dBi + 10log(2) = 5.51dBi
5GHz:
                                               Chain0/20      Chain1/20 2
For U-NII-1 band: Directional gain = 10 log[(10          + 10          ) / 2] = 5.01dBi
                                                 Chain0/20      Chain1/20 2
For U-NII-2A band: Directional gain = 10 log[(10           + 10          ) / 2] = 4.62dBi
                                                 Chain0/20      Chain1/20 2
For U-NII-2C band: Directional gain = 10 log[(10           + 10           ) / 2] = 5.72dBi
                                               Chain0/20      Chain1/20 2
For U-NII-3 band: Directional gain = 10 log[(10          + 10          ) / 2] = 5.61dBi


Z-Wave Field Strength Conversion:
                Field Strength
  Frequency                        EIRP                   EIRP           Distance     Power Density           Limit
               of Fundamental                                                                  2                    2
    (MHz)                         (dBm)                   (mW)             (cm)         (mW/cm )            (mW/cm )
               (dBuV/m) @3m
       908.4            93.9             -1.33           0.7362             22               0.00012         0.6056
Note: 1. Pout EIRP (dBm) = Field Strength of Fundamental (dBuV/m) - 95.23 (dB)
      2. Power Density Limit = F/1500

NOTE:     1. The Max. Power = Max. tune up power including tolerance.




Report No.: SA180830E03C                          Page No. 7 / 8                               Report Format Version: 6.1.1
Reference No.: 190213E03


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 + WLAN 5GHz + Zigbee + Sub-GHz + Z-Wave = 0.56492 / 1 + 0.29766 / 1 + 0.03349 / 1 +
0.02157 / 0.61 + 0.00012 / 0.6056 = 0.93163

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


--- END ---




Report No.: SA180830E03C                      Page No. 8 / 8                   Report Format Version: 6.1.1
Reference No.: 190213E03



Document Created: 2019-07-03 20:04:00
Document Modified: 2019-07-03 20:04:00

© 2025 FCC.report
This site is not affiliated with or endorsed by the FCC