Test report

FCC ID: OWS-NIC507

Test Report

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FCCID_1083388

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 EMISSIONS TEST REPORT FOR A LOW POWER TRANSMITTER I. GENERAL INFORMATION Requirement: FCC Test Requirements: FCC Part 15 Applicant: Silver Spring Networks 575 Broadway Street Redwood City, CA 94063 FCC ID: OWS-NIC507 Model No.: 174-000085 II. DESCRIPTION OF EQUIPMENT UNDER TEST (EUT) The Silver Spring Networks (SSN) “Mono” is a radio module for electric power meter communications use. The board incorporates a 900 MHz frequency hopping i210 Mesh radio and a 2.4GHz 802.15.4 Zigbee Home Area Network (HAN radio. III. TEST DATES AND TEST LOCATION Testing was performed on various dates between 8 December-31 December 2008 and 9 and 24 February 2009. Radiated emissions tests were performed at: Compliance Certification Services 47173 Benicia Street Fremont, CA 94538 Antenna port conducted output power tests were performed at Silver Spring Networks on 2 March 2009. T.N. Cokenias 6 March 2009 EMC Consultant/Agent for Silver Spring Networks Page 1of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 15.203 Antenna connector requirement The EUT uses a custom permanently attached integral antenna, a special sheet metal antenna manufactured by Silver Spring Networks for electric meters Antenna description Mfr. Model Gain No. Built-in sheet metal SSN n/a 2.4 dBi at 915 MHz electric meter 1.5 dBi at 2.4 GHz 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. For each radio, tests were performed at the following frequencies: 2.4 GHz HAN Radio Channel 11 (LOW) – 2405.8 MHz Channel 18 (MID) – 2440.8 MHz Channel 25 (HIGH-1) – 2475.4 MHz Channel 26 (HIGH) – 2480.9 MHz NOTE: New power measurements taken with new register settings to bring channel 26 into compliance with band edge emission limit for new board/antenna configuration. Maximum achievable power levels with new register settings for other channels are less than original configuration power levels. 900 MHz FHSS Channel 0 (LOW) – 902.3 MHz Channel 42 (MID) -914.9 MHz Channel 82 (HI) – 926.9 MHz Page 2of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 Test Equipment Compliance Certification Services: Equipment Mfr Model Asset No. Cal Due Spectrum analyzer Agilent E4446A C1063 11/6/09 (radiated emissions 2.4GHz Pout, spurs) EMI Receiver HP 8542E C00967 09/10/09 Bilog antenna Sunol Sciences JBI C01016 02/11/09 Pre-amplifier Agilent HP8447D C00885 03/31/09 Horn antenna EMCO 3115 C00872 03/31/09 Pre-amplifier Agilent HP 8449B C00749 04/02/09 Silver Spring Networks: Equipment Mfr Model Asset No. Cal Due Spectrum analyzer Agilent EXA 1084442 5/28/09 Test Set-up Diagram laptop Serial cable EUT Electric meter Isolation AC to DC Transformer Supply 120 VAC Support Equipment Equipment Mfr Model Asset No. Laptop PC Dell PP01L TW-0791UH1280- OC9-6558 AC/DC adapter CUI Inc. DSA-60W-20 2607HB Page 3of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 2.4 GHz HAN Radio Emissions Test Results Page 4of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 TEST RESULTS Radiated Test Set-up, 30-26 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 non-conductive fiberglass 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. EUT Channel and Power Settings Channel Frequency, MHz Output Power, dBm Low 2405.8 19.9 dBm Mid 2440.8 20.05 High – 1 ch 2475.4 13.3 High 2480.0 0.77 Power measurements taken with spectrum analyzer. Detector: PEAK Span: 20 MHz RBW=3MHz, VBW=5MHz Sweep: AUTO Page 5of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 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). 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 6of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 Restricted Bands At Band Edges Ch 11 2405 MHz Vertical Peak and Average Page 7of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 Ch 11 2405 MHz Vertical Peak and Average Page 8of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 Ch 25 2475.4 MHz Vertical Peak and Average Page 9of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 Ch 25 2475.4 MHz Horizontal Peak and Average Page 10of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 Ch 26 2480 MHz Horizontal Peak and Average Page 11of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 Ch 26 2480 MHz Vertical Bandedge Page 12of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 Page 13of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 2.4 GHz HAN Radiated Spurious Page 14of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 High Frequency Measurement Compliance Certification Services, Fremont 5m Chamber Company: Silver Spring Networks Project #: Date: 12/22/2008 Test Engineer: Doug Anderson Configuration:EUT (Mono 2.4GHx) / Host PC / 4.5VDC Power Supply Mode: TX, DSSS Test Equipment: Horn 1-18GHz Pre-amplifer 1-26GHz Pre-amplifer 26-40GHz Horn > 18GHz T60; S/N: 2238 @3m T144 Miteq 3008A00931 Hi Frequency Cables 3' cable 22807700 12' cable 22807600 20' cable 22807500 HPF Reject Filter Peak Measurements RBW=VBW=1MHz 3' cable 22807700 12' cable 22807600 20' cable 22807500 HPF_1.5GHz Average Measurements RBW=1MHz ; VBW=10Hz f Dist Read Pk Read Avg. AF CL Amp D Corr Fltr Peak Avg Pk Lim Avg Lim Pk Mar Avg Mar Notes GHz (m) dBuV dBuV dB/m dB dB dB dB dBuV/m dBuV/m dBuV/m dBuV/m dB dB (V/H) Low-Channel: 11 (2.405GHz / ATS 112 = 9) 4.810 3.0 49.2 37.4 33.7 5.8 -36.5 0.0 0.6 52.8 40.9 74 54 -21.2 -13.1 V 4.810 3.0 47.1 35.4 33.7 5.8 -36.5 0.0 0.6 50.7 39.0 74 54 -23.3 -15.0 H 12.025 3.0 43.7 31.1 38.9 9.7 -35.4 0.0 0.8 57.8 45.1 74 54 -16.2 -8.9 H Mid-Channel: 18 (2440.8MHz / ATS 112 = 9) 4.882 3.0 55.5 49.4 33.7 5.8 -36.5 0.0 0.6 59.2 53.1 74 54 -14.8 -0.9 V 7.320 3.0 50.0 39.4 36.7 7.3 -36.2 0.0 0.6 58.4 47.8 74 54 -15.6 -6.2 V 12.204 3.0 49.8 39.4 38.9 9.8 -35.4 0.0 0.8 63.9 53.5 74 54 -10.1 -0.5 V 4.882 3.0 49.9 39.2 33.7 5.8 -36.5 0.0 0.6 53.6 42.9 74 54 -20.4 -11.1 H 7.320 3.0 53.0 43.2 36.7 7.3 -36.2 0.0 0.6 61.4 51.6 74 54 -12.6 -2.4 H 12.204 3.0 41.0 28.1 38.9 9.8 -35.4 0.0 0.8 55.2 42.2 74 54 -18.8 -11.8 H Rev. 10.15.08 f Measurement Frequency Amp Preamp Gain Avg Lim Average Field Strength Limit Dist Distance to Antenna D Corr Distance Correct to 3 meters Pk Lim Peak Field Strength Limit Read Analyzer Reading Avg Average Field Strength @ 3 m Avg Mar Margin vs. Average Limit AF Antenna Factor Peak Calculated Peak Field Strength Pk Mar Margin vs. Peak Limit CL Cable Loss HPF High Pass Filter Page 15of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 High Frequency Measurement Compliance Certification Services, Fremont 5m Chamber Company: Silver Spring Networks Project #: Date: 9 Feb 2009 Test Engineer: T. Cokenias Configuration: Stand Alone Mono Board Mode: ch 25 ATS112=9 Test Equipment: Horn 1-18GHz Pre-amplifer 1-26GHz Pre-amplifer 26-40GHz Horn > 18GHz T73; S/N: 6717 @3m T144 Miteq 3008A00931 Hi Frequency Cables 3' cable 22807700 12' cable 22807600 20' cable 22807500 HPF Reject Filter Peak Measurements RBW=VBW=1MHz 3' cable 22807700 12' cable 22807600 20' cable 22807500 Average Measurements RBW=1MHz ; VBW=10Hz f Dist Read Pk Read Avg. AF CL Amp D Corr Fltr Peak Avg Pk Lim Avg Lim Pk Mar Avg Mar Notes GHz (m) dBuV dBuV dB/m dB dB dB dB dBuV/m dBuV/m dBuV/m dBuV/m dB dB (V/H) 4.950 3.0 45.7 35.7 33.9 5.9 -36.5 0.0 0.0 49.1 39.1 74 54 -24.9 -14.9 V 4.950 3.0 45.8 35.4 33.9 5.9 -36.5 0.0 0.0 49.1 38.7 74 54 -24.9 -15.3 H V 7.425 3.0 37.8 28.2 36.3 7.3 -36.2 0.0 0.0 45.2 35.6 74 54 -28.8 -18.4 V NF 7.425 3.0 42.5 28.0 36.3 7.3 -36.2 0.0 0.0 49.9 35.4 74 54 -24.1 -18.6 H NF V 9.901 3.0 44.4 33.3 38.0 8.7 -37.1 0.0 0.0 54.0 42.9 74 54 -20.0 -11.1 V 9.901 3.0 51.2 40.0 38.0 8.7 -37.1 0.0 0.0 60.8 49.6 74 54 -13.2 -4.4 H V 12.375 3.0 39.1 28.0 39.3 9.9 -35.4 0.0 0.0 52.8 41.8 74 54 -21.2 -12.2 V NF 12.375 3.0 41.8 30.6 39.3 9.9 -35.4 0.0 0.0 55.6 44.4 74 54 -18.4 -9.6 H V V V V V H H H H H H H H H H H H H Rev. 10.15.08 f Measurement Frequency Amp Preamp Gain Avg Lim Average Field Strength Limit Dist Distance to Antenna D Corr Distance Correct to 3 meters Pk Lim Peak Field Strength Limit Read Analyzer Reading Avg Average Field Strength @ 3 m Avg Mar Margin vs. Average Limit AF Antenna Factor Peak Calculated Peak Field Strength Pk Mar Margin vs. Peak Limit CL Cable Loss HPF High Pass Filter Page 16of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 Radiated Emissions 30-1000 MHz Page 17of 26

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Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 FREQUENCY HOPPING SPREAD SPECTRUM RADIO EMISSIONS Page 19of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 TEST RESULTS Radiated Test Set-up, 30 MHz-26 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. EUT Channel and Power Settings Channel Frequency, MHz Output Power, dBm Test Software Setting 0 (LOW) 902.3 MHz 29.5 ATS112=20 42 (MID) 914.9 MHz 29.22 ATS112=20 82 (HI) 926.9 MHz 28.84 AST112=20 Power measurements taken with spectrum analyzer. Detector: PEAK Span: 10 MHz RBW=1MHz, VBW=3MHz Sweep: AUTO Page 20of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 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). 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 21of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 Radiated Emissions Above 1 GHz High Frequency Measurement Compliance Certification Services, Fremont 5m Chamber Company: Silver Spring Networks Project #: Date: 12/22/2008 Test Engineer: Doug Anderson Configuration:EUT (Mono 900MHz) / Host PC / 4.5VDC Power Supply Mode: TX, Frequency Hopping Test Equipment: Horn 1-18GHz Pre-amplifer 1-26GHz Pre-amplifer 26-40GHz Horn > 18GHz T60; S/N: 2238 @3m T144 Miteq 3008A00931 Hi Frequency Cables 3' cable 22807700 12' cable 22807600 20' cable 22807500 HPF Reject Filter Peak Measurements RBW=VBW=1MHz 3' cable 22807700 12' cable 22807600 20' cable 22807500 HPF_1.5GHz Average Measurements RBW=1MHz ; VBW=10Hz f Dist Read Pk Read Avg. AF CL Amp D Corr Fltr Peak Avg Pk Lim Avg Lim Pk Mar Avg Mar Notes GHz (m) dBuV dBuV dB/m dB dB dB dB dBuV/m dBuV/m dBuV/m dBuV/m dB dB (V/H) Low-Channel: 0 (902.3MHz) 1.805 3.0 53.1 48.6 28.5 3.3 -38.3 0.0 0.3 46.8 42.3 106.0 106.0 -59.2 -63.7 V 2.707 3.0 47.4 39.3 30.2 4.1 -37.4 0.0 0.6 44.8 36.8 74 54 -29.2 -17.2 V 1.805 3.0 51.3 45.2 28.5 3.3 -38.3 0.0 0.3 45.1 39.0 106.0 106.0 -60.9 -67.0 H 2.707 3.0 48.8 40.3 30.2 4.1 -37.4 0.0 0.6 46.3 37.7 74 54 -27.7 -16.3 H Mid-Channel: 42 (914.95MHz) 1.830 3.0 50.4 44.5 28.6 3.3 -38.3 0.0 0.3 44.4 38.4 106.0 106.0 -61.6 -67.6 V 2.745 3.0 46.2 35.4 30.3 4.1 -37.4 0.0 0.6 43.8 32.9 74 54 -30.2 -21.1 V 1.830 3.0 48.5 41.3 28.6 3.3 -38.3 0.0 0.3 42.4 35.2 106.0 106.0 -63.6 -70.8 H 2.745 3.0 45.1 32.2 30.3 4.1 -37.4 0.0 0.6 42.6 29.8 74 54 -31.4 -24.2 H High-Channel: 82 (926.925MHz) 1.854 3.0 57.4 46.1 28.7 3.3 -38.3 0.0 0.3 51.5 40.1 106.0 106.0 -54.5 -65.9 V 2.781 3.0 48.4 32.1 30.4 4.2 -37.4 0.0 0.6 46.1 29.8 74 54 -27.9 -24.2 V 1.854 3.0 53.4 40.1 28.7 3.3 -38.3 0.0 0.3 47.4 34.2 106.0 106.0 -58.6 -71.8 H 2.781 3.0 48.6 35.6 30.4 4.2 -37.4 0.0 0.6 46.2 33.2 74 54 -27.8 -20.8 H 8.342 3.0 46.1 37.3 37.7 7.8 -36.3 0.0 0.7 56.0 47.2 74 54 -18.0 -6.8 Rev. 10.15.08 f Measurement Frequency Amp Preamp Gain Avg Lim Average Field Strength Limit Dist Distance to Antenna D Corr Distance Correct to 3 meters Pk Lim Peak Field Strength Limit Read Analyzer Reading Avg Average Field Strength @ 3 m Avg Mar Margin vs. Average Limit AF Antenna Factor Peak Calculated Peak Field Strength Pk Mar Margin vs. Peak Limit CL Cable Loss HPF High Pass Filter Page 22of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 Radiated Emissions Below 1 GHZ Page 23of 26

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Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 SETUP PHOTOS RADIATED RF MEASUREMENT SETUP END OF REPORT Page 26of 26

Silver Spring Networks Report No. 09PRO001 Rev.3 FCC ID: OWS-NIC507 Model: 174-000085 Report Revision History Revision Revision Description Pages Revised by Date No. Revised - Original Issue T.Cokenias 1/30/09 1 Correct typo in equipment list 5,15 T.Cokenias 2/5/09 Add power measurements data 2 Add 2.4 GHz HAN radio radiated data for 15 T.Cokenias 2/9/09 channel 25 3 Add Ch 26 antenna port output power T.Cokenias 3/6/09 plot Page 27of 26


Document Created: 2009-03-12 06:12:27
Document Modified: 2009-03-12 06:12:27
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