Test Report

FCC ID: OWS-NIC514

Test Report

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FCCID_1381155

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK 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-NIC514 IC: 5975A-NIC514 Add passive coupler/external 900 MHz antenna combination (“MPACK” configuration) II. DESCRIPTION OF EQUIPMENT UNDER TEST (EUT) The Silver Spring Networks (SSN) NIC514 is a radio module for electric power meter communications use. The board incorporates a 900 MHz frequency hopping i210 Mesh radio and a 2.4 GHz 802.15.4 HAN radio. The product has been certified with an internal sheet metal antenna and with a board connector provision for connecting an optional external antenna. Now a passive coupler will be placed on the outside housing of the electric meter containing the NIC514 radio module. This configuration will be used when the meters are installed in metal boxes or in other locations where the integral antenna signal will be blocked or shielded. III. TEST DATES AND TEST LOCATION Testing was performed at various dates 13-28 October 2010. Tests were performed at: Compliance Certification Services 47173 Benicia Street Fremont, CA 94538 T.N. Cokenias 15 November 2010 EMC Consultant/Agent for Silver Spring Networks Page 1 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK MPACK Description The Meter Patch Antenna Coupler Kit (MPACK) is a very-low-cost alternative mechanism to connect a meter to an external antenna. The MPACK attaches to the outside of the meter cover, directly over the internal antenna, and captures much of the energy from the network interface card and directs it into a coaxial cable which connects to an external antenna. It can be used on any meter where the antenna of the network interface card is sufficiently close to meter cover. For purposes of equipment authorization, the MPACK is analogous to adding a different type antenna to an existing certified product. Three external antennas were tested with the MPACK coupler: 8.1 dBi monopole omni antenna 0 dBi “puck” omni antenna 8.5 dBic panel antenna Four different meters were tested with the MPACK and the external antennas: i210+ Focus” kV2C S4e NOTE: MPACK is only used for 902-298 MHz FHSS operation. TEST REQUIREMENTS AND TEST PROCEDURES The meter module software was set to produce the highest certified output power. Module output power was measured at the module test point for Low, Mid, and High channels. The output power at the MPACK cable N-connector were measured for these settings. Radiated emissions for harmonic and spurious emissions were measured for each antenna at Low, Mid, and High channels for each MPACK/external antenna/electric meter. Receiver spurious were measured at the MPACK antenna port. Page 2 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK Test Set-up Diagram External Antenna passive coupler mounted outside meter housing laptop Serial cable module integral antenna Electric meter housing Radio module inside meter DC Supply (+4 Volts) 120VAC Support Equipment Equipment Mfr Model Asset No. DC Power Supply Agilent E3610A 2844 Laptop PC Dell PP01L TW-0791UH1280- OC9-6558 AC/DC adapter CUI Inc. DSA-60W-20 2607HB Page 3 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK Test Equipment The following test and measurement equipment was utilized for the tests documented in this report: TEST EQUIPMENT LIST Description Manufacturer Model Asset Number Cal Due Spectrum Analyzer, 26.5 GHz Agilent / HP E4440A C01179 08/18/11 Antenna, Bilog, 2 GHz Sunol Sciences JB1 C01011 07/12/11 Preamplifier, 1300 MHz Agilent / HP 8447D C00885 01/06/11 Antenna, Horn, 18 GHz EMCO 3115 C00945 06/29/11 Preamplifier, 26.5 GHz Agilent / HP 8449B C01052 07/14/11 Power Meter Agilent / HP 437B N02778 08/11/12 TEST STANDARDS 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. Tests were performed at three frequencies: 900 MHz FHSS Channel 0 (LOW) – 902.3 MHz Channel 43 (MID) -915.2 MHz Channel 82 (HIFH) – 926.9 MHz Page 4 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK TEST RESULTS Table 1 below lists the output power at the module and the corresponding power measured at the MPACK N-connector. Test results show a slight variation in output levels for the same software setting, due to the fact that two different modules were used and testing was performed on different days. Table 1: MPACK Output Power Coupling MPACK Coupling Meter FCC ID Channel NIC Power MPACK Power Coupling Test Date dBm dBm dB i210+ OWS-NIC514 0 29.78 21.9 -7.88 13-14 Oct 43 29.86 22.17 -7.69 82 28.85 22.08 -6.77 Focus OWS-NIC514 0 29.7 20.7 -9 22/25 Oct 43 29.8 21.1 -8.7 82 29.8 21.8 -8 kV2c OWS-NIC514 0 29.7 24.3 -5.4 26/28 Oct 43 29.8 24 -5.8 82 29.8 23.45 -6.35 S4e OWS-NIC514 0 29.65 25.5 -4.15 18-Oct 43 29.85 26.4 -3.45 82 29.9 26.9 -3 Radiated emissions tests were performed at the power output settings in Table 1. Page 5 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK Radiated Test Set-up, 30 MHz - 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 EUT was configured to deliver the maximum rated output power as documented in Table 1 above. 3. The turntable was slowly rotated to locate the direction of maximum emission at each emission falling in the restricted bands of 15.205. 4. Emissions were investigated to the 10th harmonic of the fundamental. 5. 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 6 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK 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 7 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK i210+ Meter Radiated Emissions Above 1 GHz 8.1dBi Omni Antenna Data Spread Sheet 0 dBi Puck Antenna Data Spread Sheet 8.5 dBi Panel Antenna Data Spread Sheet Page 8 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK High Frequency Measurement Compliance Certification Services, Fremont 5m Chamber Company: Silver Springs Networks Project #: 10U13400 Date: 10/13/10 Test Engineer: Doug Anderson Configuration: EUT with External 8.1 Omni Antenna Mode: Continuous Tx Test Equipment: Horn 1-18GHz Pre-amplifer 1-26GHz Pre-amplifer 26-40GHz Horn > 18GHz T73; S/N: 6717 @3m T144 Miteq 3008A00931 FCC 15.205 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: 902.3MHz 1.805 3.0 69.0 68.4 26.6 3.3 -38.3 0.0 0.3 60.8 60.2 0 0 60.8 60.2 V 2.707 3.0 52.1 48.6 29.1 4.1 -37.4 0.0 0.6 48.5 44.9 74 54 -25.5 -9.1 V 3.609 3.0 45.6 37.8 31.4 4.8 -36.9 0.0 0.6 45.4 37.7 74 54 -28.6 -16.3 V 4.512 3.0 44.2 35.0 32.7 5.6 -36.5 0.0 0.6 46.6 37.4 74 54 -27.4 -16.6 V 5.414 3.0 43.9 34.9 33.8 6.2 -36.3 0.0 0.5 48.1 39.1 74 54 -25.9 -14.9 V 1.805 3.0 61.3 60.0 26.6 3.3 -38.3 0.0 0.3 53.0 51.8 0 0 53.0 51.8 H 2.707 3.0 52.4 49.2 29.1 4.1 -37.4 0.0 0.6 48.8 45.6 74 54 -25.2 -8.4 H 3.609 3.0 43.1 31.3 31.4 4.8 -36.9 0.0 0.6 43.0 31.2 74 54 -31.0 -22.8 H 4.512 3.0 43.3 34.1 32.7 5.6 -36.5 0.0 0.6 45.6 36.5 74 54 -28.4 -17.5 H 5.414 3.0 43.5 34.3 33.8 6.2 -36.3 0.0 0.5 47.8 38.5 74 54 -26.2 -15.5 H Mid Channel: 915.2MHz 1.830 3.0 70.0 69.3 26.6 3.3 -38.3 0.0 0.3 62.0 61.3 0 0 62.0 61.3 V 2.746 3.0 53.3 50.0 29.2 4.1 -37.4 0.0 0.6 49.8 46.6 74 54 -24.2 -7.4 V 3.661 3.0 44.9 36.5 31.5 4.9 -36.9 0.0 0.6 45.0 36.6 74 54 -29.0 -17.4 V 4.576 3.0 42.7 32.9 32.8 5.6 -36.5 0.0 0.6 45.2 35.4 74 54 -28.8 -18.6 V 1.830 3.0 63.1 59.6 26.6 3.3 -38.3 0.0 0.3 55.0 51.6 0 0 55.0 51.6 H 2.746 3.0 52.4 49.2 29.2 4.1 -37.4 0.0 0.6 48.9 45.7 74 54 -25.1 -8.3 H 3.661 3.0 42.5 29.4 31.5 4.9 -36.9 0.0 0.6 42.6 29.5 74 54 -31.4 -24.5 H 4.576 3.0 43.4 33.9 32.8 5.6 -36.5 0.0 0.6 45.9 36.3 74 54 -28.1 -17.7 H High Channel: 926.9MHz 1.854 3.0 73.0 72.5 26.7 3.3 -38.3 0.0 0.3 65.1 64.6 0 0 65.1 64.6 V 2.781 3.0 53.8 51.3 29.3 4.2 -37.4 0.0 0.6 50.4 48.0 74 54 -23.6 -6.0 V 3.708 3.0 44.5 35.6 31.6 4.9 -36.8 0.0 0.6 44.8 35.9 74 54 -29.2 -18.1 V 4.635 3.0 43.4 33.4 32.9 5.7 -36.5 0.0 0.6 45.9 36.0 74 54 -28.1 -18.0 V 1.854 3.0 63.2 62.2 26.7 3.3 -38.3 0.0 0.3 55.3 54.3 0 0 55.3 54.3 H 2.781 3.0 52.1 48.8 29.3 4.2 -37.4 0.0 0.6 48.8 45.5 74 54 -25.2 -8.5 H 4.635 3.0 42.2 31.6 32.9 5.7 -36.5 0.0 0.6 44.8 34.2 74 54 -29.2 -19.8 H Rev. 07.22.09 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 9 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK High Frequency Measurement Compliance Certification Services, Fremont 5m Chamber Company: Silver Springs Networks Project #: 10U13400 Date: 10/13/10 Test Engineer: Doug Anderson Configuration: EUT with External 0 dBi Puck Antenna Mode: Continuous Tx Test Equipment: Horn 1-18GHz Pre-amplifer 1-26GHz Pre-amplifer 26-40GHz Horn > 18GHz T73; S/N: 6717 @3m T144 Miteq 3008A00931 FCC 15.205 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: 902.3MHz 1.805 3.0 72.6 72.0 26.6 3.3 -38.3 0.0 0.3 64.4 63.8 0 0 64.4 63.8 V 2.707 3.0 54.7 52.5 29.1 4.1 -37.4 0.0 0.6 51.1 48.8 74 54 -22.9 -5.2 V 3.609 3.0 45.0 36.5 31.4 4.8 -36.9 0.0 0.6 44.9 36.4 74 54 -29.1 -17.6 V 4.512 3.0 44.0 35.2 32.7 5.6 -36.5 0.0 0.6 46.3 37.6 74 54 -27.7 -16.4 V 5.414 3.0 43.0 33.7 33.8 6.2 -36.3 0.0 0.5 47.3 37.9 74 54 -26.7 -16.1 V 1.805 3.0 64.3 63.4 26.6 3.3 -38.3 0.0 0.3 56.1 55.2 0 0 56.1 55.2 H 2.707 3.0 51.4 48.0 29.1 4.1 -37.4 0.0 0.6 47.8 44.4 74 54 -26.2 -9.6 H 3.609 3.0 43.7 33.0 31.4 4.8 -36.9 0.0 0.6 43.6 32.8 74 54 -30.4 -21.2 H 4.512 3.0 43.5 32.8 32.7 5.6 -36.5 0.0 0.6 45.8 35.1 74 54 -28.2 -18.9 H 5.414 3.0 42.9 32.7 33.8 6.2 -36.3 0.0 0.5 47.2 37.0 74 54 -26.8 -17.0 H Mid Channel: 915.2MHz 1.830 3.0 74.1 73.5 26.6 3.3 -38.3 0.0 0.3 66.0 65.4 0 0 66.0 65.4 V 2.746 3.0 53.6 51.0 29.2 4.1 -37.4 0.0 0.6 50.2 47.5 74 54 -23.8 -6.5 V 3.661 3.0 42.9 31.2 31.5 4.9 -36.9 0.0 0.6 43.0 31.3 74 54 -31.0 -22.7 V 4.576 3.0 43.1 33.3 32.8 5.6 -36.5 0.0 0.6 45.6 35.8 74 54 -28.4 -18.2 V 1.830 3.0 64.7 61.5 26.6 3.3 -38.3 0.0 0.3 56.6 53.4 0 0 56.6 53.4 H 2.746 3.0 51.1 47.1 29.2 4.1 -37.4 0.0 0.6 47.6 43.6 74 54 -26.4 -10.4 H 4.576 3.0 42.6 32.5 32.8 5.6 -36.5 0.0 0.6 45.1 35.0 74 54 -28.9 -19.0 H High Channel: 926.9MHz 1.854 3.0 66.7 66.0 26.7 3.3 -38.3 0.0 0.3 58.8 58.1 0 0 58.8 58.1 V 2.781 3.0 51.4 47.7 29.3 4.2 -37.4 0.0 0.6 48.1 44.3 74 54 -25.9 -9.7 V 3.708 3.0 43.1 30.9 31.6 4.9 -36.8 0.0 0.6 43.4 31.2 74 54 -30.6 -22.8 V 4.635 3.0 42.9 33.8 32.9 5.7 -36.5 0.0 0.6 45.5 36.4 74 54 -28.5 -17.6 V 1.854 3.0 57.8 55.0 26.7 3.3 -38.3 0.0 0.3 49.9 47.1 0 0 49.9 47.1 H 2.781 3.0 48.2 42.4 29.3 4.2 -37.4 0.0 0.6 44.8 39.1 74 54 -29.2 -14.9 H 4.635 3.0 42.1 30.9 32.9 5.7 -36.5 0.0 0.6 44.7 33.5 74 54 -29.3 -20.5 H Rev. 07.22.09 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 10 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK High Frequency Measurement Compliance Certification Services, Fremont 5m Chamber Company: Silver Springs Networks Project #: 10U13400 Date: 10/13/10 Test Engineer: Doug Anderson Configuration: EUT with External Laird Pannel Antenna Mode: Continuous Tx Test Equipment: Horn 1-18GHz Pre-amplifer 1-26GHz Pre-amplifer 26-40GHz Horn > 18GHz T73; S/N: 6717 @3m T144 Miteq 3008A00931 FCC 15.205 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: 902.3MHz 1.805 3.0 59.2 57.8 26.6 3.3 -38.3 0.0 0.3 51.0 49.6 0 0 51.0 49.6 V 2.707 3.0 48.9 44.3 29.1 4.1 -37.4 0.0 0.6 45.3 40.6 74 54 -28.7 -13.4 V 3.609 3.0 42.1 30.3 31.4 4.8 -36.9 0.0 0.6 42.0 30.2 74 54 -32.0 -23.8 V 4.512 3.0 43.6 34.7 32.7 5.6 -36.5 0.0 0.6 46.0 37.1 74 54 -28.0 -16.9 V 5.414 3.0 43.1 33.8 33.8 6.2 -36.3 0.0 0.5 47.4 38.0 74 54 -26.6 -16.0 V 1.805 3.0 54.1 50.7 26.6 3.3 -38.3 0.0 0.3 45.9 42.5 0 0 45.9 42.5 H 2.707 3.0 47.7 40.9 29.1 4.1 -37.4 0.0 0.6 44.1 37.3 74 54 -29.9 -16.7 H 3.609 3.0 43.5 30.9 31.4 4.8 -36.9 0.0 0.6 43.4 30.8 74 54 -30.6 -23.2 H 4.512 3.0 43.3 32.8 32.7 5.6 -36.5 0.0 0.6 45.7 35.2 74 54 -28.3 -18.8 H 5.414 3.0 41.8 31.2 33.8 6.2 -36.3 0.0 0.5 46.1 35.5 74 54 -27.9 -18.5 H Mid Channel: 915.2MHz 1.830 3.0 66.0 64.4 26.6 3.3 -38.3 0.0 0.3 58.0 56.3 0 0 58.0 56.3 V 2.746 3.0 50.9 47.5 29.2 4.1 -37.4 0.0 0.6 47.4 44.0 74 54 -26.6 -10.0 V 3.661 3.0 44.5 33.9 31.5 4.9 -36.9 0.0 0.6 44.6 34.0 74 54 -29.4 -20.0 V 4.576 3.0 42.6 31.6 32.8 5.6 -36.5 0.0 0.6 45.0 34.1 74 54 -29.0 -19.9 V 1.830 3.0 57.4 52.8 26.6 3.3 -38.3 0.0 0.3 49.3 44.8 0 0 49.3 44.8 H 2.746 3.0 50.7 46.6 29.2 4.1 -37.4 0.0 0.6 47.2 43.2 74 54 -26.8 -10.8 H 4.576 3.0 43.9 35.1 32.8 5.6 -36.5 0.0 0.6 46.3 37.6 74 54 -27.7 -16.4 H High Channel: 926.9MHz 1.854 3.0 68.4 67.7 26.7 3.3 -38.3 0.0 0.3 60.5 59.8 0 0 60.5 59.8 V 2.781 3.0 52.0 49.1 29.3 4.2 -37.4 0.0 0.6 48.6 45.8 74 54 -25.4 -8.2 V 3.708 3.0 43.9 34.3 31.6 4.9 -36.8 0.0 0.6 44.2 34.6 74 54 -29.8 -19.4 V 4.635 3.0 44.6 36.6 32.9 5.7 -36.5 0.0 0.6 47.2 39.2 74 54 -26.8 -14.8 V 1.854 3.0 59.2 57.3 26.7 3.3 -38.3 0.0 0.3 51.3 49.4 0 0 51.3 49.4 H 2.781 3.0 48.9 43.3 29.3 4.2 -37.4 0.0 0.6 45.5 40.0 74 54 -28.5 -14.0 H 4.635 3.0 42.6 33.2 32.9 5.7 -36.5 0.0 0.6 45.2 35.8 74 54 -28.8 -18.2 H Rev. 07.22.09 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 11 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK Focus Meter Radiated Emissions Above 1 GHz 8.1dBi Omni Antenna Data Spread Sheet 0 dBi Puck Antenna Data Spread Sheet 8.5 dBi Panel Antenna Data Spread Sheet Page 12 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK High Frequency Measurement Compliance Certification Services, Fremont 5m Chamber Company: Silver Spring Networks Project #: 10U13400 Date: 10/25/10 Test Engineer: Thanh Nguyen Configuration: EUT Model Focus+(FCC ID OWS-NIC514) new card with MPACK 8.1dBi Ant Mode: Tx normal Test Equipment: Horn 1-18GHz Pre-amplifer 1-26GHz Pre-amplifer 26-40GHz Horn > 18GHz T73; S/N: 6717 @3m T144 Miteq 3008A00931 FCC 15.205 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) Channel 0 , 902.3MHz 1.805 3.0 58.3 57.0 26.6 3.3 -38.3 0.0 0.3 50.1 48.8 0 0 50.1 48.8 V 2.707 3.0 47.8 43.3 29.1 4.1 -37.4 0.0 0.6 44.2 39.7 74 54 -29.8 -14.3 V 3.609 3.0 42.4 31.3 31.4 4.8 -36.9 0.0 0.6 42.3 31.2 74 54 -31.7 -22.8 V 4.511 3.0 41.2 29.2 32.7 5.6 -36.5 0.0 0.6 43.6 31.5 74 54 -30.4 -22.5 V 5.414 3.0 45.5 35.1 33.8 6.2 -36.3 0.0 0.5 49.8 39.4 74 54 -24.2 -14.6 V 6.316 3.0 43.6 29.4 34.3 6.7 -36.3 0.0 0.5 48.8 34.6 0 0 48.8 34.6 V 7.218 3.0 43.2 34.5 35.2 7.2 -36.2 0.0 0.6 50.0 41.2 0 0 50.0 41.2 V 8.121 3.0 44.0 35.8 36.4 7.7 -36.2 0.0 0.7 52.6 44.5 74 54 -21.4 -9.5 V 9.023 3.0 42.9 35.8 37.2 8.2 -36.7 0.0 0.7 52.4 45.2 74 54 -21.6 -8.8 V 1.805 3.0 57.3 56.0 26.6 3.3 -38.3 0.0 0.3 49.1 47.8 0 0 49.1 47.8 V 2.707 3.0 47.8 43.3 29.1 4.1 -37.4 0.0 0.6 44.2 39.7 74 54 -29.8 -14.3 H 3.609 3.0 42.4 31.3 31.4 4.8 -36.9 0.0 0.6 42.3 31.2 74 54 -31.7 -22.8 H 4.511 3.0 41.2 29.2 32.7 5.6 -36.5 0.0 0.6 43.6 31.5 74 54 -30.4 -22.5 H 5.414 3.0 45.5 35.1 33.8 6.2 -36.3 0.0 0.5 49.8 39.4 74 54 -24.2 -14.6 H 6.316 3.0 43.6 29.4 34.3 6.7 -36.3 0.0 0.5 48.8 34.6 0 0 48.8 34.6 V 7.218 3.0 43.2 34.5 35.2 7.2 -36.2 0.0 0.6 50.0 41.2 0 0 50.0 41.2 V 8.120 3.0 44.0 35.8 36.4 7.7 -36.2 0.0 0.7 52.6 44.4 74 54 -21.4 -9.6 H 9.023 3.0 42.9 35.8 37.2 8.2 -36.7 0.0 0.7 52.4 45.2 74 54 -21.6 -8.8 V Channel 43 , 915.167MHz 2.746 3.0 47.7 42.1 29.2 4.1 -37.4 0.0 0.6 44.2 38.6 74 54 -29.8 -15.4 V 3.661 3.0 43.8 34.5 31.5 4.9 -36.9 0.0 0.6 43.9 34.6 74 54 -30.1 -19.4 V 4.578 3.0 40.3 32.1 32.8 5.6 -36.5 0.0 0.6 42.8 34.6 74 54 -31.2 -19.4 V 7.322 3.0 42.4 35.1 35.3 7.3 -36.2 0.0 0.6 49.3 42.1 74 54 -24.7 -11.9 V 8.237 3.0 41.1 31.2 36.5 7.8 -36.3 0.0 0.7 49.8 39.9 74 54 -24.2 -14.1 V 9.152 3.0 40.6 28.3 37.2 8.3 -36.7 0.0 0.7 50.1 37.8 74 54 -23.9 -16.2 V 2.746 3.0 47.5 41.4 29.2 4.1 -37.4 0.0 0.6 44.0 37.9 74 54 -30.0 -16.1 H 3.661 3.0 40.6 32.5 31.5 4.9 -36.9 0.0 0.6 40.7 32.6 74 54 -33.3 -21.4 H 4.576 3.0 41.4 32.3 32.8 5.6 -36.5 0.0 0.6 43.8 34.7 74 54 -30.2 -19.3 H 7.322 3.0 44.4 35.6 35.3 7.3 -36.2 0.0 0.6 51.4 42.6 74 54 -22.6 -11.4 H 8.238 3.0 43.3 33.3 36.5 7.8 -36.3 0.0 0.7 52.0 42.0 74 54 -22.0 -12.0 H 9.152 3.0 40.2 30.3 37.2 8.3 -36.7 0.0 0.7 49.7 39.8 74 54 -24.3 -14.2 H Channel 82 , 926.95MHz 2.780 3.0 46.8 40.7 29.3 4.2 -37.4 0.0 0.6 43.5 37.4 74 54 -30.5 -16.6 V 3.708 3.0 43.0 34.1 31.6 4.9 -36.8 0.0 0.6 43.3 34.4 74 54 -30.7 -19.6 V 4.634 3.0 42.4 31.9 32.9 5.7 -36.5 0.0 0.6 45.0 34.5 74 54 -29.0 -19.5 V 7.416 3.0 43.2 34.1 35.5 7.3 -36.2 0.0 0.6 50.4 41.3 74 54 -23.6 -12.7 V 8.341 3.0 42.0 30.6 36.6 7.8 -36.3 0.0 0.7 50.8 39.4 74 54 -23.2 -14.6 V 2.780 3.0 46.7 41.3 29.3 4.2 -37.4 0.0 0.6 43.4 38.0 74 54 -30.6 -16.0 H 3.708 3.0 42.1 32.4 31.6 4.9 -36.8 0.0 0.6 42.4 32.7 74 54 -31.6 -21.3 H 4.635 3.0 40.7 31.3 32.9 5.7 -36.5 0.0 0.6 43.3 33.8 74 54 -30.7 -20.2 H 7.415 3.0 40.6 32.9 35.5 7.3 -36.2 0.0 0.6 47.8 40.1 74 54 -26.2 -13.9 H 8.341 3.0 41.1 29.6 36.6 7.8 -36.3 0.0 0.7 50.0 38.4 74 54 -24.0 -15.6 H Rev. 07.22.09 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 13 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK High Frequency Measurement Compliance Certification Services, Fremont 5m Chamber Company: Silver Spring Networks Project #: 10U13400 Date: 10/25/10 Test Engineer: Thanh Nguyen Configuration: EUT Model Focus+(FCC ID OWS-NIC514) new card with Puck Ant Mode: Tx normal Test Equipment: Horn 1-18GHz Pre-amplifer 1-26GHz Pre-amplifer 26-40GHz Horn > 18GHz T73; S/N: 6717 @3m T144 Miteq 3008A00931 FCC 15.205 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) Channel 0 , 902.3MHz 1.804 3.0 61.1 60.2 26.6 3.3 -38.3 0.0 0.3 52.9 52.0 0 0 52.9 52.0 V 2.707 3.0 46.2 40.1 29.1 4.1 -37.4 0.0 0.6 42.6 36.4 74 54 -31.4 -17.6 V 3.609 3.0 41.9 30.3 31.4 4.8 -36.9 0.0 0.6 41.8 30.2 74 54 -32.2 -23.8 V 4.511 3.0 40.7 28.3 32.7 5.6 -36.5 0.0 0.6 43.1 30.6 74 54 -30.9 -23.4 V 5.414 3.0 42.0 32.8 33.8 6.2 -36.3 0.0 0.5 46.2 37.0 74 54 -27.8 -17.0 V 6.316 3.0 39.9 27.4 34.3 6.7 -36.3 0.0 0.5 45.1 32.6 0 0 45.1 32.6 V 7.218 3.0 40.3 32.6 35.2 7.2 -36.2 0.0 0.6 47.0 39.4 0 0 47.0 39.4 V 8.120 3.0 41.4 27.8 36.4 7.7 -36.2 0.0 0.7 50.0 36.4 74 54 -24.0 -17.6 V 9.023 3.0 40.4 27.9 37.2 8.2 -36.7 0.0 0.7 49.8 37.3 74 54 -24.2 -16.7 V 1.804 3.0 60.2 58.9 26.6 3.3 -38.3 0.0 0.3 52.0 50.7 0 0 52.0 50.7 H 2.707 3.0 49.3 45.6 29.1 4.1 -37.4 0.0 0.6 45.7 41.9 74 54 -28.3 -12.1 H 3.609 3.0 41.6 30.8 31.4 4.8 -36.9 0.0 0.6 41.5 30.7 74 54 -32.5 -23.3 H 4.511 3.0 40.5 27.6 32.7 5.6 -36.5 0.0 0.6 42.9 29.9 74 54 -31.1 -24.1 H 5.414 3.0 42.1 33.2 33.8 6.2 -36.3 0.0 0.5 46.4 37.5 74 54 -27.6 -16.5 H 6.316 3.0 42.4 35.1 34.3 6.7 -36.3 0.0 0.5 47.6 40.3 0 0 47.6 40.3 H 7.218 3.0 42.4 31.2 35.2 7.2 -36.2 0.0 0.6 49.1 38.0 0 0 49.1 38.0 H 8.120 3.0 41.6 32.6 36.4 7.7 -36.2 0.0 0.7 50.2 41.2 74 54 -23.8 -12.8 H 9.023 3.0 39.7 28.2 37.2 8.2 -36.7 0.0 0.7 49.1 37.6 74 54 -24.9 -16.4 V Channel 43 , 915.167MHz 1.830 3.0 52.9 49.2 26.6 3.3 -38.3 0.0 0.3 44.8 41.2 0 0 44.8 41.2 V 2.746 3.0 47.7 42.1 29.2 4.1 -37.4 0.0 0.6 44.2 38.6 74 54 -29.8 -15.4 V 3.661 3.0 43.8 34.5 31.5 4.9 -36.9 0.0 0.6 43.9 34.6 74 54 -30.1 -19.4 V 4.578 3.0 40.3 32.1 32.8 5.6 -36.5 0.0 0.6 42.8 34.6 74 54 -31.2 -19.4 V 5.491 3.0 43.3 36.3 33.9 6.2 -36.4 0.0 0.5 47.6 40.6 0 0 47.6 40.6 V 6.407 3.0 40.5 35.2 34.3 6.8 -36.3 0.0 0.5 45.9 40.6 0 0 45.9 40.6 V 7.322 3.0 42.4 35.1 35.3 7.3 -36.2 0.0 0.6 49.3 42.1 74 54 -24.7 -11.9 V 8.237 3.0 41.1 31.2 36.5 7.8 -36.3 0.0 0.7 49.8 39.9 74 54 -24.2 -14.1 V 9.152 3.0 40.6 28.3 37.2 8.3 -36.7 0.0 0.7 50.1 37.8 74 54 -23.9 -16.2 V 1.830 3.0 56.7 54.3 26.6 3.3 -38.3 0.0 0.3 48.6 46.3 0 0 48.6 46.3 H 2.746 3.0 47.5 41.4 29.2 4.1 -37.4 0.0 0.6 44.0 37.9 74 54 -30.0 -16.1 H 3.661 3.0 40.6 32.5 31.5 4.9 -36.9 0.0 0.6 40.7 32.6 74 54 -33.3 -21.4 H 4.576 3.0 41.4 32.3 32.8 5.6 -36.5 0.0 0.6 43.8 34.7 74 54 -30.2 -19.3 H 5.491 3.0 42.4 30.3 33.9 6.2 -36.4 0.0 0.5 46.7 34.6 0 0 46.7 34.6 H 6.406 3.0 40.4 32.2 34.3 6.8 -36.3 0.0 0.5 45.7 37.5 0 0 45.7 37.5 H 7.322 3.0 44.4 35.6 35.3 7.3 -36.2 0.0 0.6 51.4 42.6 74 54 -22.6 -11.4 H 8.238 3.0 43.3 33.3 36.5 7.8 -36.3 0.0 0.7 52.0 42.0 74 54 -22.0 -12.0 H 9.152 3.0 40.2 30.3 37.2 8.3 -36.7 0.0 0.7 49.7 39.8 74 54 -24.3 -14.2 H Channel 82 , 926.95MHz 1.854 3.0 53.7 50.5 26.7 3.3 -38.3 0.0 0.3 45.8 42.6 0 0 45.8 42.6 V 2.780 3.0 46.8 40.7 29.3 4.2 -37.4 0.0 0.6 43.5 37.4 74 54 -30.5 -16.6 V 3.708 3.0 43.0 34.1 31.6 4.9 -36.8 0.0 0.6 43.3 34.4 74 54 -30.7 -19.6 V 4.634 3.0 42.4 31.9 32.9 5.7 -36.5 0.0 0.6 45.0 34.5 74 54 -29.0 -19.5 V 5.561 3.0 47.4 43.3 34.0 6.3 -36.4 0.0 0.5 51.7 47.6 0 0 51.7 47.6 V 6.488 3.0 45.2 40.2 34.4 6.8 -36.3 0.0 0.5 50.7 45.7 0 0 50.7 45.7 V 7.416 3.0 43.2 34.1 35.5 7.3 -36.2 0.0 0.6 50.4 41.3 74 54 -23.6 -12.7 V 8.341 3.0 42.0 30.6 36.6 7.8 -36.3 0.0 0.7 50.8 39.4 74 54 -23.2 -14.6 V 9.269 3.0 41.7 31.8 37.3 8.3 -36.8 0.0 0.7 51.2 41.4 0 0 51.2 41.4 V 1.854 3.0 60.0 58.6 26.7 3.3 -38.3 0.0 0.3 52.1 50.7 0 0 52.1 50.7 H 2.780 3.0 46.7 41.3 29.3 4.2 -37.4 0.0 0.6 43.4 38.0 74 54 -30.6 -16.0 H 3.708 3.0 42.1 32.4 31.6 4.9 -36.8 0.0 0.6 42.4 32.7 74 54 -31.6 -21.3 H 4.635 3.0 40.7 31.3 32.9 5.7 -36.5 0.0 0.6 43.3 33.8 74 54 -30.7 -20.2 H 5.561 3.0 44.3 40.1 34.0 6.3 -36.4 0.0 0.5 48.6 44.5 0 0 48.6 44.5 H 6.488 3.0 38.3 32.5 34.4 6.8 -36.3 0.0 0.5 43.7 37.9 0 0 43.7 37.9 H 7.415 3.0 40.6 32.9 35.5 7.3 -36.2 0.0 0.6 47.8 40.1 74 54 -26.2 -13.9 H 8.341 3.0 41.1 29.6 36.6 7.8 -36.3 0.0 0.7 50.0 38.4 74 54 -24.0 -15.6 H 9.269 3.0 39.6 29.8 37.3 8.3 -36.8 0.0 0.7 49.1 39.4 0 0 49.1 39.4 H Rev. 07.22.09 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 14 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK High Frequency Measurement Compliance Certification Services, Fremont 5m Chamber Company: Silver Spring Networks Project #: 10U13400 Date: 10/25/10 Test Engineer: Thanh Nguyen Configuration: EUT Model Focus+(FCC ID OWS-NIC514) new card with Panel Ant Mode: Tx normal Test Equipment: Horn 1-18GHz Pre-amplifer 1-26GHz Pre-amplifer 26-40GHz Horn > 18GHz T73; S/N: 6717 @3m T144 Miteq 3008A00931 FCC 15.205 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) Channel 0 , 902.3MHz 1.804 3.0 61.6 60.3 26.6 3.3 -38.3 0.0 0.3 53.4 52.1 0 0 53.4 52.1 V 2.707 3.0 46.3 38.2 29.1 4.1 -37.4 0.0 0.6 42.7 34.6 74 54 -31.3 -19.4 V 3.609 3.0 43.6 33.6 31.4 4.8 -36.9 0.0 0.6 43.5 33.5 74 54 -30.5 -20.5 V 4.511 3.0 41.8 29.6 32.7 5.6 -36.5 0.0 0.6 44.2 32.0 74 54 -29.8 -22.0 V 5.414 3.0 41.0 30.5 33.8 6.2 -36.3 0.0 0.5 45.2 34.7 74 54 -28.8 -19.3 V 6.316 3.0 39.7 29.6 34.3 6.7 -36.3 0.0 0.5 44.9 34.8 0 0 44.9 34.8 V 7.218 3.0 43.0 34.4 35.2 7.2 -36.2 0.0 0.6 49.8 41.2 0 0 49.8 41.2 V 8.120 3.0 40.8 28.4 36.4 7.7 -36.2 0.0 0.7 49.4 37.0 74 54 -24.6 -17.0 V 9.023 3.0 39.8 27.9 37.2 8.2 -36.7 0.0 0.7 49.3 37.3 74 54 -24.7 -16.7 V 1.804 3.0 59.4 58.0 26.6 3.3 -38.3 0.0 0.3 51.2 49.8 0 0 51.2 49.8 H 2.707 3.0 48.4 42.8 29.1 4.1 -37.4 0.0 0.6 44.8 39.2 74 54 -29.2 -14.8 H 3.609 3.0 42.6 30.4 31.4 4.8 -36.9 0.0 0.6 42.5 30.3 74 54 -31.5 -23.7 H 4.511 3.0 40.6 27.9 32.7 5.6 -36.5 0.0 0.6 43.0 30.2 74 54 -31.0 -23.8 H 5.414 3.0 42.4 35.7 33.8 6.2 -36.3 0.0 0.5 46.6 39.9 74 54 -27.4 -14.1 H 6.316 3.0 40.4 34.2 34.3 6.7 -36.3 0.0 0.5 45.6 39.4 0 0 45.6 39.4 H 7.218 3.0 41.8 30.0 35.2 7.2 -36.2 0.0 0.6 48.5 36.8 0 0 48.5 36.8 H 8.120 3.0 41.7 32.0 36.4 7.7 -36.2 0.0 0.7 50.3 40.6 74 54 -23.7 -13.4 H 9.023 3.0 39.9 27.6 37.2 8.2 -36.7 0.0 0.7 49.3 37.0 74 54 -24.7 -17.0 V Channel 43 , 915.167MHz 1.830 3.0 52.9 49.2 26.6 3.3 -38.3 0.0 0.3 44.8 41.2 0 0 44.8 41.2 V 2.746 3.0 47.7 42.1 29.2 4.1 -37.4 0.0 0.6 44.2 38.6 74 54 -29.8 -15.4 V 3.661 3.0 43.8 34.5 31.5 4.9 -36.9 0.0 0.6 43.9 34.6 74 54 -30.1 -19.4 V 4.578 3.0 40.3 32.1 32.8 5.6 -36.5 0.0 0.6 42.8 34.6 74 54 -31.2 -19.4 V 5.491 3.0 43.3 36.3 33.9 6.2 -36.4 0.0 0.5 47.6 40.6 0 0 47.6 40.6 V 6.407 3.0 40.5 35.2 34.3 6.8 -36.3 0.0 0.5 45.9 40.6 0 0 45.9 40.6 V 7.322 3.0 42.4 35.1 35.3 7.3 -36.2 0.0 0.6 49.3 42.1 74 54 -24.7 -11.9 V 8.237 3.0 41.1 31.2 36.5 7.8 -36.3 0.0 0.7 49.8 39.9 74 54 -24.2 -14.1 V 9.152 3.0 40.6 28.3 37.2 8.3 -36.7 0.0 0.7 50.1 37.8 74 54 -23.9 -16.2 V 1.830 3.0 56.9 54.4 26.6 3.3 -38.3 0.0 0.3 48.9 46.4 0 0 48.9 46.4 H 2.746 3.0 49.3 44.6 29.2 4.1 -37.4 0.0 0.6 45.8 41.2 74 54 -28.2 -12.8 H 3.661 3.0 41.6 33.6 31.5 4.9 -36.9 0.0 0.6 41.7 33.7 74 54 -32.3 -20.3 H 4.576 3.0 40.5 31.1 32.8 5.6 -36.5 0.0 0.6 43.0 33.6 74 54 -31.0 -20.4 H 5.491 3.0 43.6 31.3 33.9 6.2 -36.4 0.0 0.5 47.9 35.6 0 0 47.9 35.6 H 6.406 3.0 41.4 33.5 34.3 6.8 -36.3 0.0 0.5 46.7 38.9 0 0 46.7 38.9 H 7.322 3.0 43.8 35.0 35.3 7.3 -36.2 0.0 0.6 50.8 42.0 74 54 -23.2 -12.0 H 8.238 3.0 42.4 32.6 36.5 7.8 -36.3 0.0 0.7 51.1 41.3 74 54 -22.9 -12.7 H 9.152 3.0 41.9 31.7 37.2 8.3 -36.7 0.0 0.7 51.4 41.2 74 54 -22.6 -12.8 H Channel 82 , 926.95MHz 1.854 3.0 55.5 52.7 26.7 3.3 -38.3 0.0 0.3 47.6 44.8 0 0 47.6 44.8 V 2.780 3.0 46.4 39.7 29.3 4.2 -37.4 0.0 0.6 43.1 36.3 74 54 -30.9 -17.7 V 3.708 3.0 43.6 30.3 31.6 4.9 -36.8 0.0 0.6 43.8 30.5 74 54 -30.2 -23.5 V 4.634 3.0 41.5 28.3 32.9 5.7 -36.5 0.0 0.6 44.1 30.9 74 54 -29.9 -23.1 V 5.561 3.0 46.2 42.3 34.0 6.3 -36.4 0.0 0.5 50.5 46.6 0 0 50.5 46.6 V 6.488 3.0 44.3 38.5 34.4 6.8 -36.3 0.0 0.5 49.8 44.0 0 0 49.8 44.0 V 7.416 3.0 41.4 38.3 35.5 7.3 -36.2 0.0 0.6 48.6 45.5 74 54 -25.4 -8.5 V 8.341 3.0 40.4 29.6 36.6 7.8 -36.3 0.0 0.7 49.2 38.4 74 54 -24.8 -15.6 V 9.269 3.0 42.1 33.8 37.3 8.3 -36.8 0.0 0.7 51.6 43.4 0 0 51.6 43.4 V 1.854 3.0 56.0 54.9 26.7 3.3 -38.3 0.0 0.3 48.1 47.0 0 0 48.1 47.0 H 2.780 3.0 45.0 37.5 29.3 4.2 -37.4 0.0 0.6 41.7 34.2 74 54 -32.3 -19.8 H 3.708 3.0 41.7 33.3 31.6 4.9 -36.8 0.0 0.6 41.9 33.5 74 54 -32.1 -20.5 H 4.635 3.0 40.5 35.1 32.9 5.7 -36.5 0.0 0.6 43.1 37.7 74 54 -30.9 -16.3 H 5.561 3.0 43.3 39.1 34.0 6.3 -36.4 0.0 0.5 47.6 43.5 0 0 47.6 43.5 H 6.488 3.0 40.6 33.5 34.4 6.8 -36.3 0.0 0.5 46.1 38.9 0 0 46.1 38.9 H 7.415 3.0 42.9 33.6 35.5 7.3 -36.2 0.0 0.6 50.1 40.8 74 54 -23.9 -13.2 H 8.341 3.0 40.4 30.3 36.6 7.8 -36.3 0.0 0.7 49.2 39.1 74 54 -24.8 -14.9 H 9.269 3.0 41.4 33.0 37.3 8.3 -36.8 0.0 0.7 51.0 42.5 0 0 51.0 42.5 H Rev. 07.22.09 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 15 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK kV2c Meter Radiated Emissions Above 1 GHz 8.1dBi Omni Antenna Data Spread Sheet 0 dBi Puck Antenna Data Spread Sheet 8.5 dBi Panel Antenna Data Spread Sheet Page 16 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK High Frequency Measurement Compliance Certification Services, Fremont 5m Chamber Company: Silver Spring Networks Project #: 10U13400 Date: 10/29/10 Test Engineer: Thanh Nguyen Configuration: EUT Model KV2C (FCC ID OWS-NIC514) with 8.1dBi Monopole Ant.DC PWR Mode: Tx normal Test Equipment: Horn 1-18GHz Pre-amplifer 1-26GHz Pre-amplifer 26-40GHz Horn > 18GHz T60; S/N: 2238 @3m T34 HP 8449B FCC 15.205 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) Channel 0 , 902.3MHz 1.804 3.0 58.4 55.9 27.1 3.3 -37.1 0.0 0.3 52.0 49.5 0 0 52.0 49.5 V 2.707 3.0 44.3 37.6 28.9 4.1 -36.1 0.0 0.6 41.7 35.0 74 54 -32.3 -19.0 V 3.609 3.0 41.2 33.3 31.1 4.8 -35.3 0.0 0.6 42.4 34.5 74 54 -31.6 -19.5 V 4.511 3.0 40.2 30.3 32.4 5.6 -34.9 0.0 0.6 43.9 33.9 74 54 -30.1 -20.1 V 5.414 3.0 38.7 28.5 33.4 6.2 -34.7 0.0 0.5 44.2 34.0 74 54 -29.8 -20.0 Noise floor 1.804 3.0 52.2 49.2 27.1 3.3 -37.1 0.0 0.3 45.8 42.8 0 0 45.8 42.8 H 2.707 3.0 41.9 34.5 28.9 4.1 -36.1 0.0 0.6 39.3 32.0 74 54 -34.7 -22.0 H 3.609 3.0 39.7 30.1 31.1 4.8 -35.3 0.0 0.6 40.9 31.3 74 54 -33.1 -22.7 H 4.511 3.0 38.8 26.2 32.4 5.6 -34.9 0.0 0.6 42.5 29.9 74 54 -31.5 -24.1 Noise floor Channel 43 , 915.167MHz 1.830 3.0 57.8 56.3 27.2 3.3 -37.1 0.0 0.3 51.5 50.0 0 0 51.5 50.0 V 2.746 3.0 45.1 39.3 29.0 4.1 -36.1 0.0 0.6 42.7 36.9 74 54 -31.3 -17.1 V 3.661 3.0 39.7 28.6 31.2 4.9 -35.3 0.0 0.6 41.1 30.0 74 54 -32.9 -24.0 V 4.578 3.0 38.9 28.6 32.5 5.6 -34.9 0.0 0.6 42.7 32.4 74 54 -31.3 -21.6 Noise floor 1.830 3.0 53.0 50.9 27.2 3.3 -37.1 0.0 0.3 46.7 44.6 0 0 46.7 44.6 H 2.746 3.0 54.9 52.4 29.0 4.1 -36.1 0.0 0.6 52.5 50.0 74 54 -21.5 -4.0 H 3.661 3.0 45.1 40.6 31.2 4.9 -35.3 0.0 0.6 46.5 42.0 74 54 -27.5 -12.0 H 4.576 3.0 40.7 27.6 32.5 5.6 -34.9 0.0 0.6 44.5 31.4 74 54 -29.5 -22.6 Noise floor Channel 82 , 926.95MHz 1.854 3.0 53.1 50.7 27.3 3.3 -37.1 0.0 0.3 47.0 44.6 0 0 47.0 44.6 V 2.780 3.0 45.6 41.0 29.1 4.2 -36.1 0.0 0.6 43.3 38.7 74 54 -30.7 -15.3 V 3.708 3.0 39.5 28.6 31.4 4.9 -35.2 0.0 0.6 41.1 30.2 74 54 -32.9 -23.8 V 4.634 3.0 38.5 28.2 32.5 5.7 -34.9 0.0 0.6 42.4 32.1 74 54 -31.6 -21.9 V 5.561 3.0 36.8 25.4 33.6 6.3 -34.8 0.0 0.5 42.3 31.0 0 0 42.3 31.0 Noise floor 1.854 3.0 55.5 54.1 27.3 3.3 -37.1 0.0 0.3 49.3 48.0 0 0 49.3 48.0 H 2.780 3.0 45.3 39.8 29.1 4.2 -36.1 0.0 0.6 43.0 37.5 74 54 -31.0 -16.5 H 3.708 3.0 40.3 28.4 31.4 4.9 -35.2 0.0 0.6 41.9 30.0 74 54 -32.1 -24.0 H 4.635 3.0 38.6 26.0 32.5 5.7 -34.9 0.0 0.6 42.5 29.9 74 54 -31.5 -24.1 Noise floor Rev. 07.22.09 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 17 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK High Frequency Measurement Compliance Certification Services, Fremont 5m Chamber Company: Silver Spring Networks Project #: 10U13400 Date: 10/26/10 Test Engineer: Thanh Nguyen Configuration: EUT Model KV2C, NIC 314K (FCC ID OWS-NIC514) with Puck Antenna, HP DC PWR Mode: Tx Max power Test Equipment: Horn 1-18GHz Pre-amplifer 1-26GHz Pre-amplifer 26-40GHz Horn > 18GHz T73; S/N: 6717 @3m T144 Miteq 3008A00931 FCC 15.205 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) Channel 0 , 902.3MHz 1.804 3.0 54.7 52.5 26.6 3.3 -38.3 0.0 0.3 46.4 44.3 0 0 46.4 44.3 V 2.707 3.0 49.9 45.8 30.3 4.1 -37.4 0.0 0.6 47.3 43.3 74 54 -26.7 -10.7 V 3.609 3.0 41.9 29.3 31.4 4.8 -36.9 0.0 0.6 41.8 29.2 74 54 -32.2 -24.8 V 4.511 3.0 43.0 35.3 32.7 5.6 -36.5 0.0 0.6 45.4 37.7 74 54 -28.6 -16.3 V 5.414 3.0 40.1 29.1 33.8 6.2 -36.3 0.0 0.5 44.4 33.3 74 54 -29.6 -20.7 V 6.316 3.0 45.3 41.0 34.3 6.7 -36.3 0.0 0.5 50.5 46.2 0 0 50.5 46.2 V 7.218 3.0 41.0 28.5 35.2 7.2 -36.2 0.0 0.6 47.8 35.2 0 0 47.8 35.2 V 8.120 3.0 42.3 33.1 36.4 7.7 -36.2 0.0 0.7 50.9 41.7 74 54 -23.1 -12.3 V 9.023 3.0 39.8 27.6 37.2 8.2 -36.7 0.0 0.7 49.3 37.1 74 54 -24.7 -16.9 V 1.804 3.0 58.3 57.0 26.6 3.3 -38.3 0.0 0.3 50.1 48.8 0 0 50.1 48.8 H 2.707 3.0 50.9 47.8 29.1 4.1 -37.4 0.0 0.6 47.3 44.2 74 54 -26.7 -9.8 H 3.609 3.0 42.1 29.6 31.4 4.8 -36.9 0.0 0.6 42.0 29.5 74 54 -32.0 -24.5 H 4.511 3.0 41.2 30.4 32.7 5.6 -36.5 0.0 0.6 43.6 32.7 74 54 -30.4 -21.3 H 5.414 3.0 39.5 28.8 33.8 6.2 -36.3 0.0 0.5 43.8 33.1 74 54 -30.2 -20.9 H 6.316 3.0 40.1 29.7 34.3 6.7 -36.3 0.0 0.5 45.3 34.9 0 0 45.3 34.9 H 7.218 3.0 40.6 27.9 35.2 7.2 -36.2 0.0 0.6 47.4 34.6 0 0 47.4 34.6 H 8.120 3.0 46.5 41.3 36.4 7.7 -36.2 0.0 0.7 55.1 49.9 74 54 -18.9 -4.1 H 9.023 3.0 39.8 28.4 37.2 8.2 -36.7 0.0 0.7 49.2 37.8 74 54 -24.8 -16.2 H Channel 43 , 915.167MHz 1.830 3.0 53.6 49.5 26.6 3.3 -38.3 0.0 0.3 45.5 41.4 0 0 45.5 41.4 V 2.746 3.0 49.5 45.8 29.2 4.1 -37.4 0.0 0.6 46.0 42.3 74 54 -28.0 -11.7 V 3.661 3.0 42.5 30.6 31.5 4.9 -36.9 0.0 0.6 42.6 30.7 74 54 -31.4 -23.3 V 4.578 3.0 42.6 35.0 32.8 5.6 -36.5 0.0 0.6 45.1 37.4 74 54 -28.9 -16.6 V 5.491 3.0 41.7 33.4 33.9 6.2 -36.4 0.0 0.5 46.0 37.7 0 0 46.0 37.7 V 6.407 3.0 40.0 29.7 34.3 6.8 -36.3 0.0 0.5 45.3 35.0 0 0 45.3 35.0 V 7.322 3.0 40.7 28.0 35.3 7.3 -36.2 0.0 0.6 47.7 35.0 74 54 -26.3 -19.0 V 8.237 3.0 42.9 31.6 36.5 7.8 -36.3 0.0 0.7 51.6 40.3 74 54 -22.4 -13.7 V 9.152 3.0 40.2 29.5 37.2 8.3 -36.7 0.0 0.7 49.7 39.0 74 54 -24.3 -15.0 V 1.830 3.0 59.5 58.2 26.6 3.3 -38.3 0.0 0.3 51.5 50.2 0 0 51.5 50.2 H 2.746 3.0 48.9 45.7 29.2 4.1 -37.4 0.0 0.6 45.4 42.2 74 54 -28.6 -11.8 H 3.661 3.0 41.3 30.5 31.5 4.9 -36.9 0.0 0.6 41.4 30.6 74 54 -32.6 -23.4 H 4.576 3.0 41.0 30.6 32.8 5.6 -36.5 0.0 0.6 43.5 33.1 74 54 -30.5 -20.9 H 5.491 3.0 39.5 27.3 33.9 6.2 -36.4 0.0 0.5 43.9 31.7 0 0 43.9 31.7 H 6.406 3.0 41.1 32.8 34.3 6.8 -36.3 0.0 0.5 46.4 38.2 0 0 46.4 38.2 H 7.322 3.0 40.5 28.0 35.3 7.3 -36.2 0.0 0.6 47.5 35.0 74 54 -26.5 -19.0 H 8.238 3.0 40.9 27.7 36.5 7.8 -36.3 0.0 0.7 49.6 36.4 74 54 -24.4 -17.6 H Channel 82 , 926.95MHz 1.854 3.0 52.1 48.0 26.7 3.3 -38.3 0.0 0.3 44.2 40.1 0 0 44.2 40.1 V 2.780 3.0 50.5 46.5 29.3 4.2 -37.4 0.0 0.6 47.2 43.1 74 54 -26.8 -10.9 V 3.708 3.0 41.3 29.2 31.6 4.9 -36.8 0.0 0.6 41.6 29.5 74 54 -32.4 -24.5 V 4.634 3.0 42.0 33.9 32.9 5.7 -36.5 0.0 0.6 44.6 36.4 74 54 -29.4 -17.6 V 5.561 3.0 43.2 36.2 34.0 6.3 -36.4 0.0 0.5 47.6 40.6 0 0 47.6 40.6 V 6.488 3.0 39.9 28.5 34.4 6.8 -36.3 0.0 0.5 45.3 33.9 0 0 45.3 33.9 V 7.416 3.0 40.4 28.3 35.5 7.3 -36.2 0.0 0.6 47.6 35.5 74 54 -26.4 -18.5 V 8.341 3.0 40.6 29.0 36.6 7.8 -36.3 0.0 0.7 49.4 37.8 74 54 -24.6 -16.2 V 9.269 3.0 40.1 28.0 37.3 8.3 -36.8 0.0 0.7 49.6 37.5 0 0 49.6 37.5 Noise floor 1.854 3.0 61.5 59.0 26.7 3.3 -38.3 0.0 0.3 53.6 51.1 0 0 53.6 51.1 H 2.780 3.0 49.8 45.7 29.3 4.2 -37.4 0.0 0.6 46.4 42.4 74 54 -27.6 -11.6 H 3.708 3.0 41.9 31.6 31.6 4.9 -36.8 0.0 0.6 42.2 31.9 74 54 -31.8 -22.1 H 4.635 3.0 41.5 31.2 32.9 5.7 -36.5 0.0 0.6 44.1 33.7 74 54 -29.9 -20.3 H 5.561 3.0 41.6 34.3 34.0 6.3 -36.4 0.0 0.5 46.0 38.7 0 0 46.0 38.7 H 6.488 3.0 40.3 30.5 34.4 6.8 -36.3 0.0 0.5 45.7 36.0 0 0 45.7 36.0 H 7.415 3.0 40.8 27.8 35.5 7.3 -36.2 0.0 0.6 48.0 35.0 74 54 -26.0 -19.0 H 8.341 3.0 40.0 27.6 36.6 7.8 -36.3 0.0 0.7 48.8 36.4 74 54 -25.2 -17.6 H 9.269 3.0 39.7 28.3 37.3 8.3 -36.8 0.0 0.7 49.2 37.9 0 0 49.2 37.9 Noise floor Rev. 07.22.09 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 18 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK High Frequency Measurement Compliance Certification Services, Fremont 5m Chamber Company: Silver Spring Networks Project #: 10U13400 Date: 10/26/10 Test Engineer: Thanh Nguyen Configuration: EUT Model KV2C, NIC 314K (FCC ID OWS-NIC514) with Panel Antenna, HP DC PWR Mode: Tx Max power Test Equipment: Horn 1-18GHz Pre-amplifer 1-26GHz Pre-amplifer 26-40GHz Horn > 18GHz T73; S/N: 6717 @3m T144 Miteq 3008A00931 FCC 15.205 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) Channel 0 , 902.3MHz 1.804 3.0 59.2 57.6 26.6 3.3 -38.3 0.0 0.3 51.0 49.4 0 0 51.0 49.4 V 2.707 3.0 49.9 45.0 30.3 4.1 -37.4 0.0 0.6 47.4 42.5 74 54 -26.6 -11.5 V 3.609 3.0 41.9 30.3 31.4 4.8 -36.9 0.0 0.6 41.8 30.2 74 54 -32.2 -23.8 V 4.511 3.0 43.7 37.7 32.7 5.6 -36.5 0.0 0.6 46.0 40.1 74 54 -28.0 -13.9 V 5.414 3.0 41.7 31.6 33.8 6.2 -36.3 0.0 0.5 45.9 35.9 74 54 -28.1 -18.1 V 6.316 3.0 47.5 43.8 34.3 6.7 -36.3 0.0 0.5 52.7 49.0 0 0 52.7 49.0 V 7.218 3.0 41.7 31.9 35.2 7.2 -36.2 0.0 0.6 48.4 38.6 0 0 48.4 38.6 V 8.120 3.0 48.4 43.7 36.4 7.7 -36.2 0.0 0.7 57.0 52.3 74 54 -17.0 -1.7 V 9.023 3.0 42.5 32.4 37.2 8.2 -36.7 0.0 0.7 52.0 41.9 74 54 -22.0 -12.1 V 1.804 3.0 56.9 55.8 26.6 3.3 -38.3 0.0 0.3 48.7 47.6 0 0 48.7 47.6 H 2.707 3.0 50.3 46.5 29.1 4.1 -37.4 0.0 0.6 46.6 42.9 74 54 -27.4 -11.1 H 3.609 3.0 42.0 30.1 31.4 4.8 -36.9 0.0 0.6 41.9 30.0 74 54 -32.1 -24.0 H 4.511 3.0 41.9 31.8 32.7 5.6 -36.5 0.0 0.6 44.2 34.2 74 54 -29.8 -19.8 H 5.414 3.0 43.2 34.2 33.8 6.2 -36.3 0.0 0.5 47.4 38.4 74 54 -26.6 -15.6 H 6.316 3.0 48.3 44.6 34.3 6.7 -36.3 0.0 0.5 53.5 49.8 0 0 53.5 49.8 H 7.218 3.0 42.1 32.5 35.2 7.2 -36.2 0.0 0.6 48.9 39.3 0 0 48.9 39.3 H 8.120 3.0 48.9 44.4 36.4 7.7 -36.2 0.0 0.7 57.5 53.0 74 54 -16.5 -1.0 H 9.023 3.0 43.0 33.9 37.2 8.2 -36.7 0.0 0.7 52.4 43.3 74 54 -21.6 -10.7 H Channel 43 , 915.167MHz 1.830 3.0 59.2 57.9 26.6 3.3 -38.3 0.0 0.3 51.1 49.8 0 0 51.1 49.8 V 2.746 3.0 50.3 46.9 29.2 4.1 -37.4 0.0 0.6 46.8 43.4 74 54 -27.2 -10.6 V 3.661 3.0 41.5 29.0 31.5 4.9 -36.9 0.0 0.6 41.6 29.1 74 54 -32.4 -24.9 V 4.578 3.0 42.1 32.2 32.8 5.6 -36.5 0.0 0.6 44.6 34.7 74 54 -29.4 -19.3 V 5.491 3.0 40.9 31.2 33.9 6.2 -36.4 0.0 0.5 45.2 35.6 0 0 45.2 35.6 V 6.407 3.0 43.7 36.8 34.3 6.8 -36.3 0.0 0.5 49.1 42.1 0 0 49.1 42.1 V 7.322 3.0 41.2 28.2 35.3 7.3 -36.2 0.0 0.6 48.2 35.2 74 54 -25.8 -18.8 V 8.237 3.0 41.8 32.3 36.5 7.8 -36.3 0.0 0.7 50.5 41.1 74 54 -23.5 -12.9 V 9.152 3.0 41.2 29.7 37.2 8.3 -36.7 0.0 0.7 50.7 39.2 74 54 -23.3 -14.8 V 1.830 3.0 59.7 58.3 26.6 3.3 -38.3 0.0 0.3 51.6 50.3 0 0 51.6 50.3 H 2.746 3.0 51.4 48.2 29.2 4.1 -37.4 0.0 0.6 48.0 44.7 74 54 -26.0 -9.3 H 3.661 3.0 41.6 29.8 31.5 4.9 -36.9 0.0 0.6 41.7 29.9 74 54 -32.3 -24.1 H 4.576 3.0 40.6 28.8 32.8 5.6 -36.5 0.0 0.6 43.1 31.3 74 54 -30.9 -22.7 H 5.491 3.0 40.1 29.2 33.9 6.2 -36.4 0.0 0.5 44.4 33.5 0 0 44.4 33.5 H 6.406 3.0 40.2 28.9 34.3 6.8 -36.3 0.0 0.5 45.6 34.3 0 0 45.6 34.3 H 7.322 3.0 40.6 28.4 35.3 7.3 -36.2 0.0 0.6 47.6 35.4 74 54 -26.4 -18.6 H 8.238 3.0 43.7 35.3 36.5 7.8 -36.3 0.0 0.7 52.4 44.0 74 54 -21.6 -10.0 H Channel 82 , 926.95MHz 1.854 3.0 56.8 53.6 26.7 3.3 -38.3 0.0 0.3 48.9 45.7 0 0 48.9 45.7 V 2.780 3.0 50.5 45.9 29.3 4.2 -37.4 0.0 0.6 47.1 42.6 74 54 -26.9 -11.4 V 3.708 3.0 42.4 30.6 31.6 4.9 -36.8 0.0 0.6 42.6 30.8 74 54 -31.4 -23.2 V 4.634 3.0 43.6 33.9 32.9 5.7 -36.5 0.0 0.6 46.2 36.5 74 54 -27.8 -17.5 V 5.561 3.0 43.0 36.2 34.0 6.3 -36.4 0.0 0.5 47.4 40.5 0 0 47.4 40.5 V 6.488 3.0 44.5 38.7 34.4 6.8 -36.3 0.0 0.5 50.0 44.2 0 0 50.0 44.2 V 7.416 3.0 40.2 27.8 35.5 7.3 -36.2 0.0 0.6 47.4 35.0 74 54 -26.6 -19.0 V 8.341 3.0 40.1 28.0 36.6 7.8 -36.3 0.0 0.7 49.0 36.9 74 54 -25.0 -17.1 V 9.269 3.0 39.5 27.1 37.3 8.3 -36.8 0.0 0.7 49.1 36.7 0 0 49.1 36.7 Noise floor 1.854 3.0 56.0 53.8 26.7 3.3 -38.3 0.0 0.3 48.1 45.9 0 0 48.1 45.9 H 2.780 3.0 51.3 45.6 29.3 4.2 -37.4 0.0 0.6 47.9 42.3 74 54 -26.1 -11.7 H 3.708 3.0 41.9 29.5 31.6 4.9 -36.8 0.0 0.6 42.1 29.8 74 54 -31.9 -24.2 H 4.635 3.0 40.8 29.3 32.9 5.7 -36.5 0.0 0.6 43.4 31.9 74 54 -30.6 -22.1 H 5.561 3.0 42.5 33.6 34.0 6.3 -36.4 0.0 0.5 46.8 38.0 0 0 46.8 38.0 H 6.488 3.0 41.4 30.8 34.4 6.8 -36.3 0.0 0.5 46.9 36.3 0 0 46.9 36.3 H 7.415 3.0 40.1 28.2 35.5 7.3 -36.2 0.0 0.6 47.3 35.4 74 54 -26.7 -18.6 H 8.341 3.0 41.7 30.1 36.6 7.8 -36.3 0.0 0.7 50.5 38.9 74 54 -23.5 -15.1 H 9.269 3.0 39.5 27.3 37.3 8.3 -36.8 0.0 0.7 49.1 36.9 0 0 49.1 36.9 Noise floor Rev. 07.22.09 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 19 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK S4e Meter Radiated Emissions Above 1 GHz 8.1dBi Omni Antenna Data Spread Sheet 0 dBi Puck Antenna Data Spread Sheet 8.5 dBi Panel Antenna Data Spread Sheet Page 20 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK High Frequency Measurement Compliance Certification Services, Fremont 5m Chamber Company: Silver Spring Networks Project #: 10U13400 Date: 10/18/10 Test Engineer: Thanh Nguyen Configuration: EUT Model NIC314K with MPACK 8.1 dBi Omni, DC PWR Supply, Remote Support Laptop Mode: Tx normal Test Equipment: Horn 1-18GHz Pre-amplifer 1-26GHz Pre-amplifer 26-40GHz Horn > 18GHz T60; S/N: 2238 @3m T34 HP 8449B FCC 15.205 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) Channel 0 , 902.3MHz 2.707 3.0 50.7 42.7 28.9 4.1 -36.1 0.0 0.6 48.1 40.1 74 54 -25.9 -13.9 V 3.609 3.0 41.1 30.3 31.1 4.8 -35.3 0.0 0.6 42.3 31.5 74 54 -31.7 -22.5 V 4.511 3.0 40.9 33.2 32.4 5.6 -34.9 0.0 0.6 44.6 36.9 74 54 -29.4 -17.1 V 5.414 3.0 41.1 34.2 33.4 6.2 -34.7 0.0 0.5 46.6 39.6 74 54 -27.4 -14.4 V 8.120 3.0 45.1 40.8 36.4 7.7 -34.0 0.0 0.7 55.9 51.6 74 54 -18.1 -2.4 V 9.023 3.0 40.9 33.1 37.4 8.2 -35.2 0.0 0.7 52.0 44.2 74 54 -22.0 -9.8 V 2.707 3.0 48.7 43.3 28.9 4.1 -36.1 0.0 0.6 46.1 40.8 74 54 -27.9 -13.2 H 3.609 3.0 41.7 32.2 31.1 4.8 -35.3 0.0 0.6 42.9 33.4 74 54 -31.1 -20.6 H 4.511 3.0 40.3 32.8 32.4 5.6 -34.9 0.0 0.6 44.0 36.5 74 54 -30.0 -17.5 H 5.414 3.0 40.1 32.0 33.4 6.2 -34.7 0.0 0.5 45.5 37.5 74 54 -28.5 -16.5 H 8.120 3.0 38.9 31.2 36.4 7.7 -34.0 0.0 0.7 49.7 41.9 74 54 -24.3 -12.1 H 9.023 3.0 38.0 30.3 37.4 8.2 -35.2 0.0 0.7 49.2 41.4 74 54 -24.8 -12.6 H Channel 43 , 915.21MHz 2.746 3.0 55.7 52.0 29.0 4.1 -36.1 0.0 0.6 53.3 49.6 74 54 -20.7 -4.4 V 3.661 3.0 44.2 32.6 31.2 4.9 -35.3 0.0 0.6 45.6 34.0 74 54 -28.4 -20.0 V 4.576 3.0 40.5 33.7 32.5 5.6 -34.9 0.0 0.6 44.3 37.4 74 54 -29.7 -16.6 V 7.322 3.0 39.9 31.3 35.5 7.3 -34.1 0.0 0.6 49.2 40.5 74 54 -24.8 -13.5 V 8.237 3.0 38.8 31.6 36.5 7.8 -34.2 0.0 0.7 49.6 42.4 74 54 -24.4 -11.6 V 9.152 3.0 37.8 29.7 37.4 8.3 -34.9 0.0 0.7 49.3 41.2 74 54 -24.7 -12.8 V 2.745 3.0 56.8 52.5 29.0 4.1 -36.1 0.0 0.6 54.4 50.1 74 54 -19.6 -3.9 H 3.661 3.0 43.2 32.8 31.2 4.9 -35.3 0.0 0.6 44.7 34.2 74 54 -29.3 -19.8 H 4.576 3.0 43.3 34.7 32.5 5.6 -34.9 0.0 0.6 47.1 38.5 74 54 -26.9 -15.5 H 7.322 3.0 37.4 28.4 35.5 7.3 -34.1 0.0 0.6 46.7 37.6 74 54 -27.3 -16.4 H 8.238 3.0 41.3 32.2 36.5 7.8 -34.2 0.0 0.7 52.1 43.0 74 54 -21.9 -11.0 H 9.153 3.0 38.6 29.3 37.4 8.3 -34.9 0.0 0.7 50.1 40.9 74 54 -23.9 -13.1 H Channel 82 , 926.85MHz 2.780 3.0 51.9 47.8 29.1 4.2 -36.1 0.0 0.6 49.6 45.5 74 54 -24.4 -8.5 V 3.708 3.0 41.4 30.3 31.4 4.9 -35.2 0.0 0.6 43.0 31.9 74 54 -31.0 -22.1 V 4.634 3.0 42.5 34.6 32.5 5.7 -34.9 0.0 0.6 46.4 38.5 74 54 -27.6 -15.5 V 8.341 3.0 36.2 28.2 36.6 7.8 -34.3 0.0 0.7 47.0 39.1 74 54 -27.0 -14.9 V 2.780 3.0 46.6 40.3 29.1 4.2 -36.1 0.0 0.6 44.3 38.0 74 54 -29.7 -16.0 H 3.708 3.0 42.6 33.3 31.4 4.9 -35.2 0.0 0.6 44.2 34.9 74 54 -29.8 -19.1 H 4.635 3.0 40.3 30.0 32.5 5.7 -34.9 0.0 0.6 44.2 33.9 74 54 -29.8 -20.1 H 7.415 3.0 37.4 28.4 35.6 7.3 -34.1 0.0 0.6 46.9 37.9 74 54 -27.1 -16.1 H 8.341 3.0 37.3 28.2 36.6 7.8 -34.3 0.0 0.7 48.2 39.1 74 54 -25.8 -14.9 H Rev. 07.22.09 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 21 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK High Frequency Measurement Compliance Certification Services, Fremont 5m Chamber Company: Silver Spring Networks Project #: 10U13400 Date: 10/18/10 Test Engineer: Thanh Nguyen Configuration: EUT Model NIC314K with Puck 3 dBi Antenna DC PWR Supply, Remote Support Laptop Mode: Tx normal Test Equipment: Horn 1-18GHz Pre-amplifer 1-26GHz Pre-amplifer 26-40GHz Horn > 18GHz T60; S/N: 2238 @3m T34 HP 8449B FCC 15.205 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) Channel 0 , 902.3MHz 2.707 3.0 54.0 51.0 28.9 4.1 -36.1 0.0 0.6 51.4 48.4 74 54 -22.6 -5.6 V 3.609 3.0 46.8 35.4 31.1 4.8 -35.3 0.0 0.6 48.0 36.6 74 54 -26.0 -17.4 V 4.512 3.0 45.5 34.3 32.4 5.6 -34.9 0.0 0.6 49.2 38.0 74 54 -24.8 -16.0 V 2.707 3.0 56.4 52.1 28.9 4.1 -36.1 0.0 0.6 53.8 49.5 74 54 -20.2 -4.5 H 3.609 3.0 46.3 36.2 31.1 4.8 -35.3 0.0 0.6 47.5 37.4 74 54 -26.5 -16.6 H 4.511 3.0 42.5 32.8 32.4 5.6 -34.9 0.0 0.6 46.2 36.5 74 54 -27.8 -17.5 Nose Floor Channel 43 , 916.560MHz 2.746 3.0 50.8 46.5 29.0 4.1 -36.1 0.0 0.6 48.4 44.1 74 54 -25.6 -9.9 V 3.661 3.0 40.6 35.7 31.2 4.9 -35.3 0.0 0.6 42.0 37.2 74 54 -32.0 -16.8 V 4.576 3.0 45.1 34.3 32.5 5.6 -34.9 0.0 0.6 48.9 38.1 74 54 -25.1 -15.9 Noise floor 2.746 3.0 51.7 44.2 29.0 4.1 -36.1 0.0 0.6 49.3 41.8 74 54 -24.7 -12.2 H 3.661 3.0 46.0 36.0 31.2 4.9 -35.3 0.0 0.6 47.4 37.4 74 54 -26.6 -16.6 Noise floor Channel 82 , 926.85MHz 2.781 3.0 52.4 44.9 29.1 4.2 -36.1 0.0 0.6 50.1 42.6 74 54 -23.9 -11.4 V 3.708 3.0 46.7 35.6 31.4 4.9 -35.2 0.0 0.6 48.4 37.2 74 54 -25.6 -16.8 Noise floor 2.781 3.0 49.8 43.9 29.1 4.2 -36.1 0.0 0.6 47.6 41.6 74 54 -26.4 -12.4 H 3.708 3.0 46.0 35.4 31.4 4.9 -35.2 0.0 0.6 47.6 37.0 74 54 -26.4 -17.0 Noise floor Rev. 07.22.09 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 22 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK High Frequency Measurement Compliance Certification Services, Fremont 5m Chamber Company: Silver Spring Networks Project #: 10U13400 Date: 10/18/10 Test Engineer: Thanh Nguyen Configuration: EUT Model NIC314K with Panel 8.5 dBi Circular Antenna, DC PWR Supply, Remote Support Laptop Mode: Tx normal Test Equipment: Horn 1-18GHz Pre-amplifer 1-26GHz Pre-amplifer 26-40GHz Horn > 18GHz T60; S/N: 2238 @3m T34 HP 8449B FCC 15.205 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) Channel 0 , 902.3MHz 1.805 3.0 70.7 66.8 27.2 3.3 -37.1 0.0 0.3 64.2 60.4 0 0 64.2 60.4 V 2.707 3.0 55.1 45.7 28.9 4.1 -36.1 0.0 0.6 52.5 43.1 74 54 -21.5 -10.9 V 3.609 3.0 45.9 35.9 31.1 4.8 -35.3 0.0 0.6 47.1 37.1 74 54 -26.9 -16.9 V 4.512 3.0 44.4 35.2 32.4 5.6 -34.9 0.0 0.6 48.1 38.8 74 54 -25.9 -15.2 V 2.707 3.0 53.9 44.1 28.9 4.1 -36.1 0.0 0.6 51.4 41.5 74 54 -22.6 -12.5 H 3.607 3.0 44.8 36.0 31.1 4.8 -35.3 0.0 0.6 46.0 37.2 74 54 -28.0 -16.8 H 4.511 3.0 44.8 33.9 32.4 5.6 -34.9 0.0 0.6 48.5 37.5 74 54 -25.5 -16.5 Noise Floor Channel 43 , 916.560MHz 1.831 3.0 71.8 66.3 27.2 3.3 -37.1 0.0 0.3 65.5 60.0 0 0 65.5 60.0 V 2.746 3.0 53.7 45.1 29.0 4.1 -36.1 0.0 0.6 51.3 42.7 74 54 -22.7 -11.3 V 3.661 3.0 47.0 35.8 31.2 4.9 -35.3 0.0 0.6 48.5 37.2 74 54 -25.5 -16.8 Noise floor 4.576 3.0 45.1 34.3 32.5 5.6 -34.9 0.0 0.6 48.9 38.1 74 54 -25.1 -15.9 Noise floor 1.831 3.0 69.3 62.6 27.2 3.3 -37.1 0.0 0.3 63.0 56.4 0 0 63.0 56.4 H 2.746 3.0 57.6 51.8 29.0 4.1 -36.1 0.0 0.6 55.2 49.4 74 54 -18.8 -4.6 H 3.661 3.0 48.0 36.4 31.2 4.9 -35.3 0.0 0.6 49.4 37.8 74 54 -24.6 -16.2 Noise floor Channel 82 , 926.85MHz 1.854 3.0 72.2 70.2 27.3 3.3 -37.1 0.0 0.3 66.1 64.1 0 0 66.1 64.1 V 2.781 3.0 52.7 45.2 29.1 4.2 -36.1 0.0 0.6 50.4 43.0 74 54 -23.6 -11.0 V 3.708 3.0 45.0 35.7 31.4 4.9 -35.2 0.0 0.6 46.6 37.3 74 54 -27.4 -16.7 Noise floor 1.854 3.0 69.7 65.8 27.3 3.3 -37.1 0.0 0.3 63.5 59.7 0 0 63.5 59.7 V 2.781 3.0 49.8 43.9 29.1 4.2 -36.1 0.0 0.6 47.6 41.6 74 54 -26.4 -12.4 H 3.708 3.0 46.0 35.4 31.4 4.9 -35.2 0.0 0.6 47.6 37.0 74 54 -26.4 -17.0 Noise floor Rev. 07.22.09 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 23 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK Radiated Emissions Below 1 GHz All emissions for all antenna and meter combinations were more than 20 dB below 15.205 limits in the 30-1000 MHz frequency range. Antenna Port Conducted Receiver Spurious Emissions Emissions for all antenna/meter combinations were almost identical. Worst-case emissions appeared to be for the S4e meter, which also has the lowest coupling loss. Page 24 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK SETUP PHOTOS RADIATED RF MEASUREMENT i210+ with 8dBi Monopole RADIATED RF MEASUREMENT i210+ with 0dBi Puck RADIATED RF MEASUREMENT i210+ with 8.5dBic Panel Page 25 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK RADIATED RF MEASUREMENT Focus meter with 8dBi Monopole Page 26 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK RADIATED RF MEASUREMENT Focus meter with 0dBi Puck RADIATED RF MEASUREMENT Focus meter with 8.5 dBic Panel Page 27 of 34


Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK RADIATED RF MEASUREMENT k2VVC meter with 0dBi Puck RADIATED RF MEASUREMENT k2VVC meter with 8.5 dBic Panel Page 29 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK RADIATED RF MEASUREMENT S4e meter with 8.1 dBi Monopole Page 30 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK RADIATED RF MEASUREMENT S4e meter with 0dBi Puck RADIATED RF MEASUREMENT S4e meter with 8.5dBic Panel Page 31 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK i210+ RX Spurious Antenna Port Focus RX spurious antenna port Page 32 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK k2VC RX spurious antenna port S4e RX spurious antenna port Page 33 of 34

Silver Spring Networks Report No. 10PRO021 FCC ID: OWS-NIC514 MPACK END OF REPORT Report Revision History Revision Revision Description Pages Revised by Date No. Revised - Original Issue T. Cokenias 11/15/2010 Page 34 of 34


Document Created: 2010-11-17 21:28:39
Document Modified: 2010-11-17 21:28:39
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