MPE

FCC ID: SFX-TMANIII

RF Exposure Info

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FCCID_1668152

Maximum permissible emissions (MPE) As outlined in the “TMAN installation and operation manual” the user is typically located 2-3 meter in front of the TrackMan™ Radar Unit. The TrackMan™ Radar Unit can easily be re-located, so it is classified as a mobile device. The transmitting power Ptx is nominal 2 * 14dBm = 17dBm.The transmitting antenna gain Gtx is at maximum direction 15dB.The maximum equivalent isotropic radiated power EIRP of the TMAN consequently: EIRPmax =  ∗  = 32dBm (1.6W) From the EIRP the power density  can be calculated using the equation below:  = ∗ ∗  [1] where D is the distance from the transmitting antenna. Equation [1] assumes that the distance D is large enough to be in the far field of the antenna. In the near field of the antenna, the power density  will be less than what is obtained from equation [1]. The far field distance (Rayleigh distance) of the antenna is about 0.45 m ∗  ( ≫  ) Using equation [1] with the nominal EIRP of 32dBm at distance greater than 36 cm, the maximum power density is below 0.1mW/cm2. At the normal operating distance of 2.5 meter, the maximum power density is 0.002 mW/ cm2. The MPE of the TMAN is consequently far under the limit specified in FCC OET bulletin 65 of 5 mW/ cm2 and 1 mW/cm2 for both controlled and uncontrolled exposure respectively. TrackMan A/S · Stubbeled 2 · DK-2950 Vedbæk · Denmark Telephone +45 45 74 00 33 · info@trackman.dk · www.trackman.dk


Document Created: 2011-12-06 11:49:28
Document Modified: 2011-12-06 11:49:28
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