RF Exposure

FCC ID: LDKIR829GW-LTE

RF Exposure Info

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FCCID_2827482

Cisco Systems, Inc.                                                                             FCC ID: LDKIR829GW-LTE

4     FCC §2.1091 & §15.407(f) - RF Exposure

4.1      Applicable Standard
According to FCC §15.407(f) and §1.1307(b)(1), systems operating under the provisions of this 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.

                                 Limits for General Population/Uncontrolled Exposure

           Frequency            Electric Field        Magnetic Field
                                                                               Power Density          Averaging Time
             Range                Strength              Strength
                                                                                 (mW/cm2)               (minutes)
             (MHz)                  (V/m)                (A/m)
                                    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


4.2      MPE Prediction
Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01


                                                      S = PG/4R²
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


4.3      MPE Results

5.3 GHz band:
                                                  Antenna gain = 4 dBi

                          Maximum peak output power at antenna input terminal (dBm):            21.35
                           Maximum peak output power at antenna input terminal (mW):            136.458
                                                                 Prediction distance (cm):      20
                                                            Prediction frequency (MHz):         5270
                                                 Maximum Antenna Gain, typical (dBi):           4
                                                     Maximum Antenna Gain (numeric):            2.512
                            Power density of prediction frequency at 20.0 cm (mW/cm2):          0.068
                  MPE limit for uncontrolled exposure at prediction frequency (mW/cm2):         1.0


Report Number: R1506011-407/Cisco EDCS-1514900                       Page 10 of 185             FCC Part 15.407 Test Report


Cisco Systems, Inc.                                                                         FCC ID: LDKIR829GW-LTE


                                               Antenna gain = 7 dBi

                         Maximum peak output power at antenna input terminal (dBm):         19.00
                          Maximum peak output power at antenna input terminal (mW):         79.433
                                                                Prediction distance (cm):   20
                                                           Prediction frequency (MHz):      5310
                                                Maximum Antenna Gain, typical (dBi):        7
                                                    Maximum Antenna Gain (numeric):         5.012
                           Power density of prediction frequency at 20.0 cm (mW/cm2):       0.079
                 MPE limit for uncontrolled exposure at prediction frequency (mW/cm2):      1.0


                                               Antenna gain = 14 dBi

                         Maximum peak output power at antenna input terminal (dBm):         12.51
                          Maximum peak output power at antenna input terminal (mW):         17.824
                                                                Prediction distance (cm):   20
                                                           Prediction frequency (MHz):      5260
                                                Maximum Antenna Gain, typical (dBi):        14
                                                    Maximum Antenna Gain (numeric):         25.119
                           Power density of prediction frequency at 20.0 cm (mW/cm2):       0.089
                 MPE limit for uncontrolled exposure at prediction frequency (mW/cm2):      1.0


The device is compliant with the requirement MPE limit for uncontrolled exposure.



5.6 GHz band:

                                               Antenna gain = 4 dBi

                         Maximum peak output power at antenna input terminal (dBm):         22.08
                          Maximum peak output power at antenna input terminal (mW):         161.436
                                                                Prediction distance (cm):   20
                                                           Prediction frequency (MHz):      5510
                                                Maximum Antenna Gain, typical (dBi):        4
                                                    Maximum Antenna Gain (numeric):         2.512
                           Power density of prediction frequency at 20.0 cm (mW/cm2):       0.081
                 MPE limit for uncontrolled exposure at prediction frequency (mW/cm2):      1.0




Report Number: R1506011-407/Cisco EDCS-1514900                   Page 11 of 185             FCC Part 15.407 Test Report


Cisco Systems, Inc.                                                                          FCC ID: LDKIR829GW-LTE

                                               Antenna gain = 7 dBi

                         Maximum peak output power at antenna input terminal (dBm):          19.31
                          Maximum peak output power at antenna input terminal (mW):          85.310
                                                                Prediction distance (cm):    20
                                                           Prediction frequency (MHz):       5550
                                                Maximum Antenna Gain, typical (dBi):         7
                                                    Maximum Antenna Gain (numeric):          5.012
                           Power density of prediction frequency at 20.0 cm (mW/cm2):        0.085
                 MPE limit for uncontrolled exposure at prediction frequency (mW/cm2):       1.0


                                               Antenna gain = 14 dBi

                         Maximum peak output power at antenna input terminal (dBm):          11.13
                          Maximum peak output power at antenna input terminal (mW):          12.972
                                                                Prediction distance (cm):    20
                                                           Prediction frequency (MHz):       5550
                                                Maximum Antenna Gain, typical (dBi):         14
                                                    Maximum Antenna Gain (numeric):          25.119
                           Power density of prediction frequency at 20.0 cm (mW/cm2):        0.065
                 MPE limit for uncontrolled exposure at prediction frequency (mW/cm2):       1.0

The device is compliant with the requirement MPE limit for uncontrolled exposure.



Co-location:

2.4 GHz and 5 GHz bands can transmit simultaneously. A certified 2G/3G/4G module (FCC ID: N7NMC7355,
IC: 2417C-MC7355) was built in the host. Per FCC KDB 447498, when RF sources have difference
frequencies, the fraction of the FCC power density limit shall be determined and the sum of all fractional
components shall be less than 1.


                                                   WLAN Co-location

                         Evaluated     Worst-Case
         Frequency                                      MPE Limit      Worst-Case       Sum of
                          Distance       MPE                                                              Limit
           Band                                         (mW/cm2)       MPE Ratios      MPE Ratios
                            (cm)       (mW/cm2)
           2.4 GHz           20            0.246            1.0           24.6 %
                                                                                            57.2 %       100 %
           5 GHz             20            0.572            1.0           32.6 %




Report Number: R1506011-407/Cisco EDCS-1514900                    Page 12 of 185             FCC Part 15.407 Test Report


Cisco Systems, Inc.                                                              FCC ID: LDKIR829GW-LTE


                         2.4 GHz WLAN + 5 GHz WLAN + 850 MHz Co-Location

                       Evaluated    Worst-Case
         Frequency                                MPE Limit      Worst-Case    Sum of
                        Distance      MPE                                                     Limit
           Band                                   (mW/cm2)       MPE Ratios   MPE Ratios
                          (cm)      (mW/cm2)
           2.4 GHz        20           0.246          1.0           24.6 %
           5 GHz          20           0.572          1.0           32.6 %      93.3 %       100 %
          850 MHz         20           0.198         0.549          36.1 %

                         2.4 GHz WLAN + 5 GHz WLAN + 1900 MHz Co-Location

                       Evaluated    Worst-Case
         Frequency                                MPE Limit      Worst-Case    Sum of
                        Distance      MPE                                                     Limit
           Band                                   (mW/cm2)       MPE Ratios   MPE Ratios
                          (cm)      (mW/cm2)
           2.4 GHz        20           0.246          1.0           24.6 %
           5 GHz          20           0.572          1.0           32.6 %      69.8 %       100 %
         1900 MHz         20           0.126          1.0           12.6 %

                         2.4 GHz WLAN + 5 GHz WLAN + 700 MHz Co-Location

                       Evaluated    Worst-Case
         Frequency                                MPE Limit      Worst-Case    Sum of
                        Distance      MPE                                                     Limit
           Band                                   (mW/cm2)       MPE Ratios   MPE Ratios
                          (cm)      (mW/cm2)
           2.4 GHz        20           0.246          1.0           24.6 %
           5 GHz          20           0.572          1.0           32.6 %      99.6 %       100 %
          700 MHz         20           0.199         0.469          42.4 %

                         2.4 GHz WLAN + 5 GHz WLAN + 1700 MHz Co-Location

                       Evaluated    Worst-Case
         Frequency                                MPE Limit      Worst-Case    Sum of
                        Distance      MPE                                                     Limit
           Band                                   (mW/cm2)       MPE Ratios   MPE Ratios
                          (cm)      (mW/cm2)
           2.4 GHz        20           0.246          1.0           24.6 %
           5 GHz          20           0.572          1.0           32.6 %      77.1 %       100 %
         1700 MHz         20           0.199          1.0           19.9 %

Conclusion: Simultaneous transmission MPE test exclusion applied to this device due to the sum of MPE ratios
             for all simultaneous transmitting antennas incorporated in the host is less than 1.0.




Report Number: R1506011-407/Cisco EDCS-1514900              Page 13 of 185       FCC Part 15.407 Test Report



Document Created: 2015-12-01 16:29:03
Document Modified: 2015-12-01 16:29:03

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