RF exposure evaluation

FCC ID: KA2CS8600LHA1

RF Exposure Info

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FCCID_4042933

     FCC RF EXPOSURE EVALUATION REPORT
                     FCC ID: KA2CS8600LHA1


Project No.       : 1806C009
Equipment         : Full HD Outdoor Wi‐Fi Camera
Model             : DCS‐8600LH
Applicant         : D‐Link Corporation
Address           : 17595 Mt. Herrmann, Fountain Valley, California,
                   United States 92708
Exposure category : General population/uncontrolled environment
EUT Type:         : Production Unit (Engineer Sample)
Device Type       : Mobile Device


   1. Evaluation Method
Systems operating under the provisions of FCC 47 CFR section shall be operated in a manner that
ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s
guidelines.
In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as mobile
device whereby a distance of 0.2m normally can be maintained between the user and the device, and
below RF Permissible Exposure limit shall comply with.
In accordance with KDB447498D01 for Simultaneous transmission MPE test exclusion applies when the
sum of the MPE ratios for all simultaneous transmitting antennas incorporated in a host device, based
on the calculated/estimated, numerically modeled or measured field strengths or power density, is ≤ 1.0.
The MPE ratio of each antenna is determined at the minimum test separation distance required by the
operating configurations and exposure conditions of the host device, according to the ratio of field
strengths or power density to MPE limit, at the test frequency. Either the maximum peak or spatially
averaged results from measurements or numerical simulations may be used to determine the MPE
ratios. Spatial averaging does not apply when MPE is estimated using simple calculations based on far‐
field plane‐wave equivalent conditions. The antenna installation and operating requirements for the
host device must meet the minimum test separation distances required by all antennas, in both
standalone and simultaneous transmission operations, to satisfy compliance.

   2. Limits for General Population/Uncontrolled Exposure




   3. Refer Evaluation Method
ANSI C95.1–1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency
Electromagnetic Fields, 3 kHz to 300 GHz.
FCC KDB publication 447498 D01 General RF Exposure Guidance v06: Mobile and Portable Devices RF
Exposure Procedures and Equipment Authorization Policies.
FCC CFR 47 part1 1.1310: Radiofrequency radiation exposure limits.
FCC CFR 47 part2 2.1093: Radiofrequency radiation exposure evaluation: portable devices


    4. Calculation Method
Predication of MPE limit at a given distance
Equation from page 18 of OET Bulletin 65, Edition 97‐01

S=PG/4πR²
Where:
S=power density
P=power input to antenna
G=power gain of the antenna in the direction of interest relative to an isotropic radiator
R=distance to the center of radiation of the antenna

    5.                             Conducted Power Results

         5.1                       Test Setup




         5.2                       Test Equipment

     Item      Kind of Equipment      Manufacturer       Type No.        Serial No.   Calibrated until
       1          Power Meter          ANRITSU           ML2495A         1128009       Mar.11, 2019
       2       Pulse Power Sensor      ANRITSU           MA2411B         1027500       Mar.11, 2019

         Remark: all calibration period of equipment list is one year.


         5.3                       Test Procedure

         a.                       The EUT was directly connected to the power meter and antenna
            output port as show in the block diagram Test Setup.
         b.                       Setup EUT work at duty cycle more than 98%;
         c.                       Read power sensor values in peak detector;


         5.4                       Test Results and Manufacturing Tolerance

                                            Maximum Peak power declared by Manufacturer
               Mode
                                                           Antenna 1
                GFSK                                         ≤5.00
               8DPSK                                         ≤6.50


         GFSK – BT LE                                          ≤5.00

                                               Maximum Peak power declared by Manufacturer
         Mode              Frequency Band
                                                Antenna 1                 Antenna 2
      IEEE 802.11b               2.4G            ≤ 18.00                   ≤ 18.00
      IEEE 802.11g               2.4G            ≤ 28.00                   ≤ 28.00
   IEEE 802.11n HT20             2.4G            ≤ 26.50                   ≤ 25.50
   IEEE 802.11n HT40             2.4G            ≤ 26.00                   ≤ 25.50


   6.                             Antenna Information

                                                                                  Maximum Peak Gain
  Antenna      Manufacturer       Model Name     Antenna Type        Connector
                                                                                        (dBi)
 Antenna 1           T&W                N/A              PCB            N/A             3.00
 Antenna 2           T&W                N/A              PCB            N/A             3.00


   7.                             Evaluation Results

        7.1                       Standalone

Antenna 1
                                               Antenna    Antenna
                            Output power                               Duty        MPE      MPE Limits
        Mode                                    Gain        Gain
                                                                       Cycle     (mW/cm2)   (mW/cm2)
                        (dBm)         (mW)      (dBi)     (linear)
        GFSK             5.00        3.1623     3.00      1.9953       100%       0.0013     1.0000
       8DPSK             6.50        4.4668     3.00      1.9953       100%       0.0018     1.0000
    GFSK – BT LE         5.00        3.1623     3.00      1.9953       100%       0.0013     1.0000
    IEEE 802.11b        18.00        63.0957    3.00      1.9953       100%       0.0251     1.0000
    IEEE 802.11g         28.00      630.9573    3.00      1.9953       100%       0.2506     1.0000
 IEEE 802.11n HT20      26.50       446.6836    3.00      1.9953       100%       0.1774     1.0000
 IEEE 802.11n HT40      26.00       398.1072    3.00      1.9953       100%       0.1581     1.0000

Antenna 2
                                               Antenna    Antenna
                            Output power                               Duty        MPE      MPE Limits
        Mode                                    Gain        Gain
                                                                       Cycle     (mW/cm2)   (mW/cm2)
                        (dBm)         (mW)      (dBi)     (linear)
    IEEE 802.11b        18.00        63.0957    3.00      1.9953       100%       0.0251     1.0000
    IEEE 802.11g        28.00       630.9573    3.00      1.9953       100%       0.2506     1.0000
 IEEE 802.11n HT20      25.50       354.8134    3.00      1.9953       100%       0.1409     1.0000
 IEEE 802.11n HT40      25.50       354.8134    3.00      1.9953       100%       0.1409     1.0000

Remark:
   1. Maximum power including tune‐up tolerance;
   2. EIRP including tune‐up tolerance;


    3. MPE use distance is 20cm from manufacturer declaration of user manual.
          7.2                       Simultaneous MPE

According to KDB447498 for Transmitters used in mobile exposure conditions for simultaneous transmission
operations;
∑ of MPE ratios ≤ 1.0

The device support one antennas for BT/WLAN and the other antennas for WLAN, BT and WLAN antennas
can simultaneous transmit, need consider simultaneous transmission; consider all simultaneous transmission
condition and record worst case at listed;

Antenna 1, Antenna 2 BT/WLAN

                                     MPE Ratio      MPE Ratio
   Band              Mode                                          ∑ MPE ratios     Limit      Results
                                      Antenna 1      Antenna 2
                       GFSK           0.0013           ‐/‐            < 0.3          1.0        PASS
                      8DPSK           0.0018           ‐/‐            < 0.3          1.0        PASS
                   GFSK – BT LE       0.0013           ‐/‐            < 0.3          1.0        PASS
   2.4G            IEEE 802.11b       0.0251         0.0251           < 0.3          1.0        PASS
                   IEEE 802.11g       0.2506         0.2506           < 0.3          1.0        PASS
                IEEE 802.11n HT20     0.1774         0.1409           < 0.4          1.0        PASS
                IEEE 802.11n HT40     0.1581         0.1409           < 0.3          1.0        PASS

Remark:
   1. Maximum power including tune‐up tolerance;
   2. EIRP including tune‐up tolerance;
   3. MPE use distance is 20cm from manufacturer declaration of user manual.


    8.                              Conclusion
The measurement results comply with the FCC Limit per 47 CFR 2.1093 for the uncontrolled RF Exposure and
SAR Exclusion Threshold per KDB 447498 v06.



Document Created: 2018-10-20 21:19:39
Document Modified: 2018-10-20 21:19:39

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