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FCC ID: OWS-NIC506

Test Report

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Silver Spring Networks Report No. 09PRO015SUPPRev1 FCC ID: OWS-NIC506 Model: 205-000026 CLASS 2 PERMISSIVE CHANGE TEST REPORT FOR 902-928 MHZ FREQUENCY HOPPING RADIO MODULE FCC ID: OWS-NIC506 MODEL NO.: eBRIDGE REPORT NUMBER: 09PRO015SUPP ISSUE DATE: 9 NOVEMBER 2009 Prepared for SILVER SPRING NETWORKS INC. 575 BROADWAY STREET REDWOOD CITY CA 94063 Prepared by T.N. COKENIAS CONSULTING P.O. BOX 1086 EL GRANADA CA 94018 Page 1 of 39

Silver Spring Networks Report No. 09PRO015SUPPRev1 FCC ID: OWS-NIC506 Model: 205-000026 EMISSIONS TEST REPORT FOR A LOW POWER TRANSMITTER I. GENERAL INFORMATION Requirement: FCC Test Requirements: FCC Part 15 Industry Canada RSS-210, RSS-Gen Applicant: Silver Spring Networks 575 Broadway Street Redwood City, CA 94063 FCC ID: OWS-NIC506 IC: 5975A-NIC506 Model No.: 205-000026 II. DESCRIPTION OF EQUIPMENT UNDER TEST (EUT) The Silver Spring Networks (SSN) NIC506 model 205-000026 is a radio module used for electric power meter communications. The NIC506 is a 902-928 MHz frequency hopping radio. III. TEST DATES AND TEST LOCATION Testing was performed on 13 October and 22 October 2009, in response to a request from the TCB reviewer for a class 2 permissive change for the referenced FCC ID. Harmonic 900 MHz radiated emissions tests were performed at: Compliance Certification Services 47173 Benicia Street Fremont, CA 94538 Antenna port conducted tests were performed at Silver Spring Networks. T.N. Cokenias 9 November 2009 EMC Consultant/Agent for Silver Spring Networks Page 2 of 39

Silver Spring Networks Report No. 09PRO015SUPPRev1 FCC ID: OWS-NIC506 Model: 205-000026 15.203 Antenna connector requirement The EUT uses an external mount omni-directional antenna. Antenna description Gain Monopole omni 6 dBi TEST PROCEDURES All tests were performed in accordance with the applicable procedures called out in the following documents, unless otherwise noted: FCC 47CFR15 RSS-210 Issue 7: Low power license exempt radio frequency devices (July 2007) RSS-212: Test Facilities and Test Methods for Radio Equipment ANSI C63.4 – 2003, American National Standard for Methods of Measurement of Radio- Noise Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz. Test Equipment Compliance Certification Services: TEST EQUIPMENT LIST Description Manufacturer Model Asset Number Cal Due Spectrum Analyzer, 44 GHz Agilent / HP E4446A C01069 01/05/10 Antenna, Horn, 18 GHz EMCO 3115 C00945 01/29/10 Preamplifier, 26.5 GHz Agilent / HP 8449B C01052 02/04/10 Silver Spring Networks: Equipment Mfr Model Serial No. Cal Due Spectrum analyzer Agilent E44053 MY45113391 07/23/10 Spectrum analyzer Agilent EXA MY48030147 07/23/10 Spectrum analyzer HP 8562B 2712A001139 09/25/10 Page 3 of 39

Silver Spring Networks Report No. 09PRO015SUPPRev1 FCC ID: OWS-NIC506 Model: 205-000026 Test Set-up Diagram laptop or PC AC/DC 120 VAC EUT 60 Hz POE Support Equipment Description Manufacturer Model No. Serial/Asset No. Laptop computer Dell Latitude D620 C01095 Laptop power supply Lite-On LA65N50-00 - POE adapter Sonic Wall MNH-01-SSG-5535 101-500-158-50 AC/12VDC adapter Hon-Kwang D12-10 - Page 4 of 39

Silver Spring Networks Report No. 09PRO015SUPPRev1 FCC ID: OWS-NIC506 Model: 205-000026 TEST RESULTS Radiated Test Set-up, 1-9.3 GHz Bilog or Horn antenna 1-4m 3m EUT preamplifier Fig. 1 Test Procedures Radiated emissions generated by the transmitter portion of the EUT were measured. 1. The EUT was placed on a wooden table resting on a turntable on the test site. The search antenna was placed 3m from the EUT. The EUT antenna was mounted in the with the EUT TX antenna pointed directly to the search antenna. 2. The turntable was slowly rotated to locate the direction of maximum emission at each emission falling in the restricted bands of 15.205. 3. Emissions were investigated to the 10th harmonic of the fundamental. 4. Once maximum direction was determined, the search antenna was raised and lowered in both vertical and horizontal polarizations. The maximum readings so obtained are recorded in the data listed below. Test Results: Worst-case results are presented. Refer to data sheets below. Restricted band emissions meet 54 dBuV/m. Other undesired emissions from the transmitter meet the -20 dBc requirement in 15.247(d). Page 5 of 39

Silver Spring Networks Report No. 09PRO015SUPPRev1 FCC ID: OWS-NIC506 Model: 205-000026 15.205 Restricted Frequency Bands MHz MHz MHz GHz 0.090 - 0.110 16.42 - 16.423 399.9 - 410 4.5 - 5.15 0.495 - 0.505 (1) 16.69475 - 16.69525 608 - 614 5.35 - 5.46 2.1735 - 2.1905 16.80425 - 16.80475 960 - 1240 7.25 - 7.75 4.125 - 4.128 25.5 - 25.67 1300 - 1427 8.025 - 8.5 4.17725 - 4.17775 37.5 - 38.25 1435 - 1626.5 9.0 - 9.2 4.20725 - 4.20775 73 - 74.6 1645.5 - 1646.5 9.3 - 9.5 6.215 - 6.218 74.8 - 75.2 1660 - 1710 10.6 - 12.7 6.26775 - 6.26825 108 - 121.94 1718.8 - 1722.2 13.25 - 13.4 6.31175 - 6.31225 123 - 138 2200 - 2300 14.47 - 14.5 8.291 - 8.294 149.9 - 150.05 2310 - 2390 15.35 - 16.2 8.362 - 8.366 156.52475 - 2483.5 - 2500 17.7 - 21.4 8.37625 - 8.38675 156.52525 2655 - 2900 22.01 - 23.12 8.41425 - 8.41475 156.7 - 156.9 3260 - 3267 23.6 - 24.0 12.29 - 12.293 162.0125 - 167.17 3332 - 3339 31.2 - 31.8 12.51975 - 12.52025 167.72 - 173.2 3345.8 - 3358 36.43 - 36.5 12.57675 - 12.57725 240 - 285 3600 - 4400 13.36 - 13.41 322 - 335.4 15.209 Gen eral Field Strength Limits Frequency Field Strength Measurement Distance (MHz) (microvolts/meter) (meters) _______________________________________________________________ 0.009 - 0.490 2400/F (kHz) 300 0.490 - 1.705 24000/F (kHz) 30 1.705 - 30.0 30 30 30 - 88 100 ** 3 88 - 216 150 ** 3 216 - 960 200 ** 3 Above 960 500 3 _______________________________________________________________ Page 6 of 39

Silver Spring Networks Report No. 09PRO015SUPPRev1 FCC ID: OWS-NIC506 Model: 205-000026 Radiated Emissions Above 1 GHz NOTE: Spurious radiated emissions limits for a 15.247 frequency hopping radio, except for emissions at restricted band frequencies, must be at least -20 dBc below the field strength at the fundamental frequency, when measured in a 100 kHz bandwidth. The maximum output power of the EUT is 29.62 dBm. The antenna gain is 6 dBi. E, dBuV/m at 3m = (95.24 + eirp), dBuV/m = 95.24+29.62+6 = 130.9 dBuV/m 130.9 dBuV/m - 20 = 110.9 dBuV/m limit for spurious emissions not in restricted bands. Page 7 of 39

Silver Spring Networks Report No. 09PRO015SUPPRev1 FCC ID: OWS-NIC506 Model: 205-000026 High Frequency Measurement Compliance Certification Services, Fremont 5m Chamber Test Engr: Tom Chen Date: 10/13/09 Project #: 09U12834 Company: Silver Spring Network EUT Description: eBridge radio 900 MHz FHSS EUT M/N: FCC ID: OWS-NIC506 Test Target: FCC15 Mode Oper: Constant Transmit f Measurement Frequency Amp Preamp Gain Average Field Strength Limit Dist Distance to Antenna D Corr Distance Correct to 3 meters Peak Field Strength Limit Read Analyzer Reading Avg Average Field Strength @ 3 m Margin vs. Average Limit AF Antenna Factor Peak Calculated Peak Field Strength Margin vs. Peak Limit CL Cable Loss HPF High Pass Filter f Dist Read AF CL Amp D Corr Fltr Corr. Limit Margin Ant. Pol. Det. Ant.High Table Angle Notes GHz (m) dBuV dB/m dB dB dB dB dBuV/m dBuV/m dB V/H P/A/QP cm Degree E-Birdage 914.7MHz 1.829 3.0 59.3 27.0 3.3 -35.5 0.0 0.3 54.4 110.9 -56.5 V P 102.8 352.6 -20 dBc Vert 1.829 3.0 58.2 27.0 3.3 -35.5 0.0 0.3 53.3 110.9 -57.6 V A 102.8 352.6 -20 dBc Vert E-Birdage 914.7MHz 2.744 3.0 50.1 29.3 4.1 -35.2 0.0 0.6 48.9 74.0 -25.1 V P 102.8 352.6 Vert 2.744 3.0 47.5 29.3 4.1 -35.2 0.0 0.6 46.2 54.0 -7.8 V A 102.8 352.6 Vert E-Birdage 914.7MHz 3.659 3.0 43.6 31.4 4.9 -34.9 0.0 0.6 45.6 74.0 -28.4 V P 102.8 352.6 Vert 3.659 3.0 37.4 31.4 4.9 -34.9 0.0 0.6 39.4 54.0 -14.6 V A 102.8 352.6 Vert E-Birdage 914.7MHz 1.829 3.0 51.6 27.0 3.3 -35.5 0.0 0.3 46.7 104.0 -27.3 H P 100.0 153.7 -20 dBc Hori 1.829 3.0 48.5 27.0 3.3 -35.5 0.0 0.3 43.6 104.0 -10.4 H A 100.0 153.7 -20 dBc Hori E-Birdage 914.7MHz 2.744 3.0 42.1 29.3 4.1 -35.2 0.0 0.6 40.9 74.0 -33.1 H P 100.0 153.7 Hori 2.744 3.0 30.7 29.3 4.1 -35.2 0.0 0.6 29.5 54.0 -24.5 H A 100.0 153.7 Hori E-Birdage 914.7MHz 2.744 3.0 41.8 29.3 4.1 -35.2 0.0 0.6 40.6 74.0 -33.4 H P 100.0 153.7 Hori 2.744 3.0 32.6 29.3 4.1 -35.2 0.0 0.6 31.4 54.0 -22.6 H A 100.0 153.7 Hori E-Birdage 914.7MHz 3.659 3.0 42.0 31.4 4.9 -34.9 0.0 0.6 44.0 74.0 -30.0 H P 100.0 153.7 Hori 3.659 3.0 32.7 31.4 4.9 -34.9 0.0 0.6 34.6 54.0 -19.4 H A 100.0 153.7 Hori E-Birdage 914.7MHz 4.574 3.0 38.6 32.6 5.6 -34.8 0.0 0.6 42.6 74.0 -31.4 H P 100.0 153.7 Hori 4.574 3.0 26.7 32.6 5.6 -34.8 0.0 0.6 30.7 54.0 -23.3 H A 100.0 153.7 Hori Rev. 4.1.2.7 Note: No other emissions were detected above the system noise floor. Page 8 of 39

Silver Spring Networks Report No. 09PRO015SUPPRev1 FCC ID: OWS-NIC506 Model: 205-000026 PEAK OUTPUT POWER PEAK POWER LIMIT §15.247 (b) The maximum peak output power of the intentional radiator shall not exceed the following: §15.247 (b) (2) For frequency hopping systems operating in the 902-928 MHz band, employing at least 50 hopping channels: 1 watt; and employing less than 50 hopping channels, but at least 25 hopping channels: 0.25 watt. §15.247 (b) (4) Except as shown in paragraphs (b)(3) (i), (ii) and (iii) of this section, if transmitting antennas of directional gain greater than 6 dBi are used the peak output power from the intentional radiator shall be reduced below the stated values in paragraphs (b)(1) or (b)(2) of this section, as appropriate, by the amount in dB that the directional gain of the antenna exceeds 6 dBi. The maximum antenna gain is 6 dBi, therefore the power limit is 30 dBm. TEST PROCEDURE The transmitter output is connected to a spectrum analyzer and the analyzer bandwidth is set to a value greater than the 20 dB bandwidth of the EUT. RESULTS No non-compliance noted: Channel Frequency P out Low 902.3 29.57 Mid 914.9 29.62 High 926.9 28.95 Page 9 of 39

Silver Spring Networks Report No. 09PRO015SUPPRev1 FCC ID: OWS-NIC506 Model: 205-000026 OUTPUT POWER LOW CHANNEL Page 10 of 39

Silver Spring Networks Report No. 09PRO015SUPPRev1 FCC ID: OWS-NIC506 Model: 205-000026 OUTPUT POWER MID CHANNEL Page 11 of 39

Silver Spring Networks Report No. 09PRO015SUPPRev1 FCC ID: OWS-NIC506 Model: 205-000026 OUTPUT POWER HIGH CHANNEL Page 12 of 39

Silver Spring Networks Report No. 09PRO015SUPPRev1 FCC ID: OWS-NIC506 Model: 205-000026 CONDUCTED SPURIOUS EMISSIONS LIMITS §15.247 (c) In any 100 kHz bandwidth outside the frequency band in which the spread spectrum intentional radiator is operating, the radio frequency power that is produced by the intentional radiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF conducted or a radiated measurement. Attenuation below the general limits specified in §15.209(a) is not required. In addition, radiated emissions which fall in the restricted bands, as defined in§15.205(a), must also comply with the radiated emission limits specified in §15.209(a) (see §15.205(c)). TEST PROCEDURE The transmitter output is connected to a spectrum analyzer. The resolution bandwidth is set to 100 kHz. The video bandwidth is set to 100 kHz. The spectrum from 30 MHz to 10 GHz is investigated with the transmitter set to the lowest, middle, and highest channels. RESULTS No non-compliance noted: Page 13 of 39

Silver Spring Networks Report No. 09PRO015SUPPRev1 FCC ID: OWS-NIC506 Model: 205-000026 SPURIOUS EMISSIONS, MID CHANNEL Page 14 of 39

Silver Spring Networks Report No. 09PRO015SUPPRev1 FCC ID: OWS-NIC506 Model: 205-000026 SETUP PHOTOS ANTENNA PORT CONDUCTED RF MEASUREMENT SETUP, SILVER SPRING NETWORKS Page 15 of 39

Silver Spring Networks Report No. 09PRO015SUPPRev1 FCC ID: OWS-NIC506 Model: 205-000026 RADIATED RF MEASUREMENT SETUP END OF REPORT Report Revision History Revision Revision Description Pages Revised by Date No. Revised - Original Issue T. Cokenias 11/3/09 1 Add E-field calculation at fundamental T. Cokenias 11/9/09 Page 16 of 39


Document Created: 2009-11-10 13:17:52
Document Modified: 2009-11-10 13:17:52
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