RF Exposure Info

FCC ID: OWS-NIC507

RF Exposure Info

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FCCID_1381042

                                                                                      Sheet1



Silver Spring Networks

FCC ID: OWS-NIC507

2.4 GHz DTS Radio
                              Distance, cm    Distance, cm      Distance, cm
                              Center meter    Left Meter        Right Meter
                                    21              26.40           26.40

mW/cm2 from Table1:                1.00              0.6              0.6

Max RF Power TX Antenna       MPE distance    S, mW/cm          Comment
P, dBm       G, dBi           cm

    23.50            1.50           5.0             0.057       Center Meter   contribution
    29.86            4.00          18.0             0.278       Left Meter     contribution
    29.86            4.00          18.0             0.278       Right meter    contribution

                                                                                                        16cm               16cm
                 Worst Case      RFx total           5.7%       % center       2.4 GHz
                                                    46.3%       % left         900 MHz
                                                    46.3%       % right        900 MHz                         d cm
                                                                                                                                      2   2 0.5
                                                                                                                                    (d +16 )
                              TOTAL                 98.3%       <=100%
Basis of Calculations:
                                                                                                      MPE:            S=0.6 mW/cm2 at d cm
E^2/3770 = S, mW/cm2
E, V/m = (Pwatts*Ggain*30)^.5/d, meters
d = ((Pwatts*G*30)/3770*S))^0.5                 Pwatts*Ggain = 10^(PdBm-30+GdBi)/10)
S@20cm = 20 log (MPE dist/20cm)
NOTE: For mobile or fixed location transmitters, minimum separation distance is for FCC compliance is 20 cm,
         even if calculations indicate MPE distance is less




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Document Created: 2010-11-10 14:52:55
Document Modified: 2010-11-10 14:52:55

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