MPE calculation

FCC ID: OWS-NIC511-LTE

RF Exposure Info

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FCCID_3314835

Company: Silver Spring Networks Evaluation of: MicroAP 5 To: FCC CFR 47 Part 1.1310 Report No.: SSNT135_MPE Rev A Report MPE REPORT

MPE TEST REPORT FROM Evaluation of: Silver Spring Networks MicroAP 5 to To: FCC CFR 47 Part 1.1310 Test Report Serial No.: SSNT135-MPE Rev A Report This report supersedes: NONE Applicant: Silver Spring Networks 230 W Tasman Drive San Jose, California 95134 USA Product Function: Plug in Radio Device Issue Date: 3rd Feb 2017 This Test Report is Issued Under the Authority of: MiCOM Labs, Inc. 575 Boulder Court Pleasanton California 94566 USA Phone: +1 (925) 462-0304 Fax: +1 (925) 462-0306 www.micomlabs.com MiCOM Labs is an ISO 17025 Accredited Testing Laboratory

1. MAXIMUM PERMISSABLE EXPOSURE Calculations for Maximum Permissible Exposure Levels Power Density = Pd (mW/cm 2) = EIRP/(4*π*d2) EIRP = P * G P = Peak output power (mW) G = Antenna numeric gain (numeric) d = Separation distance (cm) Numeric Gain = 10 ^ (G (dBi)/10) The calculations in the table below use the highest conducted power values together with the lowest antenna gain specified for the EUT. These calculations represent worst case in terms of the exposure levels. Peak Peak Source Based Calculated Limit of Power Ant Numeric Freq. Band Output Output Time Average Power Density Density Gain Gain (MHz) Power Power Correction (mW/cm2) @ (mW/cm2) @ (dBi) (numeric) (dBm) (mW) (dB) 20cm 20cm 902 - 925 1.2 1.32 30 1000 0 0.262 0.601 2400 - 2483.5 5.6 3.63 27 501.19 0 0.362 1 LTE FDD Band 3.5 2.24 24 251.19 -12 0.007 1 II LTE FDD Band 1 1.26 24 251.19 -12 0.004 0.551 V Assessment for simultaneous operation Scenarios: 1. 900 MHz and 2.4GHz and LTE band II Total Evaluation: (0.262/0.601) + (0.362/1) + (0.007/1) = 0.805 ≤ 1 2. 900 MHz and 2.4GHz and LTE band V Total Evaluation: (0.262/0.601) + (0.362/1) + (0.004/1) = 0.805 ≤ 1 Note: for mobile or fixed location transmitters the minimum separation distance is 20cm, even if calculations indicate the MPE distance to be less. Specification Maximum Permissible Exposure Limits FCC §1.1310 Limit = 1.310 Table 1

575 Boulder Court Pleasanton, California 94566, USA Tel: +1 (925) 462 0304 Fax: +1 (925) 462 0306 www.micomlabs.com


Document Created: 2017-02-08 15:33:19
Document Modified: 2017-02-08 15:33:19
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