MPE 11 bg

FCC ID: NDD9563240808

RF Exposure Info

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FCCID_977292

FCC TEST REPORT                        Report No.: FR852605AB




      Appendix A. Maximum Permissible Exposure




                                      Page No.   : A1 of A3
                                      FCC ID     : NDD9563240808


FCC TEST REPORT                                                                                Report No.: FR852605AB


1. Maximum Permissible Exposure
1.1. Applicable Standard

    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 levels in excess limit for maximum permissible exposure. In
    accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as a mobile device
    whereby a distance of 0.2 m normally can be maintained between the user and the device.
    (A) Limits for Occupational / Controlled Exposure
                                                                                                         Averaging Time
     Frequency Range         Electric Field        Magnetic Field        Power Density (S)
                                                                                                          |E|²,|H|² or S
          (MHz)            Strength (E) (V/m)    Strength (H) (A/m)         (mW/ cm²)
                                                                                                            (minutes)
           0.3-3.0                 614                   1.63                     (100)*                         6
           3.0-30                1842 / f               4.89 / f                 (900 / f)*                      6
           30-300                 61.4                  0.163                       1.0                          6
          300-1500                                                                F/300                          6
       1500-100,000                                                                  5                           6
    (B) Limits for General Population / Uncontrolled Exposure
                                                                                                         Averaging Time
     Frequency Range         Electric Field        Magnetic Field        Power Density (S)
                                                                                                          |E|²,|H|² or S
          (MHz)            Strength (E) (V/m)    Strength (H) (A/m)         (mW/ cm²)
                                                                                                            (minutes)
          0.3-1.34                 614                   1.63                     (100)*                        30
           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
    Note: f = frequency in MHz ; *Plane-wave equivalent power density

1.2. MPE Calculation Method

                 30 × P × G                                                      E2
    E (V/m) =                                Power Density:        Pd (W/m²) =
                     d                                                           377
    E = Electric field (V/m)
    P = Peak RF output power (W)
    G = EUT Antenna numeric gain (numeric)
    d = Separation distance between radiator and human body (m)
    The formula can be changed to

    Pd =
           30 × P × G
            377 × d 2
    From the peak EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of
    the used antenna, the RF power density can be obtained.



                                                                                              Page No.      : A2 of A3
                                                                                              FCC ID        : NDD9563240808


FCC TEST REPORT                                                              Report No.: FR852605AB


1.3. Calculated Result and Limit

    Antenna Type : Dipole Antenna
    Max Conducted Power for IEEE 802.11b/g: 16.87dBm
                                                                            Limit of
                                 Peak Output                   Power
     Antenna Gain Antenna Gain                 Peak Output                   Power
                                   Power                     Density (S)                   Test Result
         (dBi)     (numeric)                   Power (mW)                  Density (S)
                                   (dBm)                     (mW/cm²)
                                                                           (mW/cm²)
          3          1.9953         16.8700      48.6407      0.019317          1           Complies




                                                                            Page No.     : A3 of A3
                                                                            FCC ID       : NDD9563240808



Document Created: 2008-07-10 16:22:48
Document Modified: 2008-07-10 16:22:48

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