MPE 1

FCC ID: OWS-NIC514

RF Exposure Info

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FCCID_1256802

Silver Spring Networks Report No. 10PRO002 FCC ID: OWS-NIC5514 Model: 340-040304 RF Exposure (MPE) Calculations Silver Spring Networks FCC ID: OWS-NIC514 IC: 5975A- NIC514 Utility Meter WLAN Transceiver 2.4 GHz Calculate mW/cm2 here. Enter frequency in MHz: RF Hazard Distance Calculation Calculation of Limits from 1.1310 Table 1 Controlled Uncontrolled Ave 6 min Ave 30 min mW/cm2 from Table1: 1.00 (E: 61 V/m) F(MHz) Actual F, MHz Occ, mW/c2 Gen, mW/cm2 0.3-3 0.5 100.0 100.0 Max RF Power TX Antenna MPE distance S, mW/cm@ Comment 3.0 - 30.0 5 180.0 36.0 P, dBm G, dBi cm at 20 cm 3 0.0-300 55 1.0 0.2 300-1500 902 3.0 0.60 21.7 1.0 3.8 0.04 1500-100000 5555 5.0 1.0 Enter P(mW) Equivalent dBm Enter dBm Equivalent Watts Basis of Calculations: 64 18.1 18.1 64.6 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 Page 20 of 36


Document Created: 2010-01-28 08:51:56
Document Modified: 2010-01-28 08:51:56
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