1932200R-RF-FCC-FCC Part15.247_Lora-Ring Bridge-5B01S8-V1.0 0329-2

FCC ID: 2AEUPBHARB001

Test Report

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FCCID_4219873

Test Report FCC Part15 Subpart C Product Name : Ring Bridge Model No. : 5B01S8 FCC ID : 2AEUPBHARB001 Applicant : Ring, LLC. Address : 1523 26th St, Santa Monica, CA 90404 Date of Receipt : Mar. 25, 2018 Test Date : Mar. 25, 2018 ~ Mar. 26, 2018 Issued Date : Mar. 29, 2019 Report No. : 1932200R-RF-US-P06V02 Report Version : V1.0 Note:This report was based on DEKRA Report No. 18C2098R-RF-US-P06V02, only Change the capacitance to reduce de-sense, so the RSE and output power re-test. The test results relate only to the samples tested. The test results shown in the test report are traceable to the national/international standard through the calibration of the equipment and evaluated measurement uncertainty herein. This report must not be used to claim product endorsement by A2LA or any agency of the government. The test report shall not be reproduced without the written approval of DEKRA Testing & Certification (Suzhou) Co., Ltd.

Report No: 1932200R-RF-US-P06V02 Tes t R e p o r t C e r t i f i c a t i o n Issued Date : Mar. 29, 2019 Report No. : 1932200R-RF-US-P06V02 Product Name : Ring Bridge Applicant : Ring, LLC. Address : 1523 26th St, Santa Monica, CA 90404 Manufacturer : Ring, LLC. Address : 1523 26th St, Santa Monica, CA 90404 Model No. : 5B01S8 FCC ID : 2AEUPBHARB001 EUT Voltage : DC 5V Test Voltage : AC 120V/60Hz Brand Name : ring Applicable Standard : FCC CFR Title 47 Part 15 Subpart C 558074 D01 15.247 MEAS GUIDANCE V05R01 Test Result : Complied Performed Location : DEKRA Testing & Certification (Suzhou) Co., Ltd. No.99 Hongye Rd., Suzhou Industrial Park, Suzhou, 215006, Jiangsu, China TEL: +86-512-6251-5088 / FAX: +86-512-6251-5098 FCC Registration Number: CN1199 Documented By : ( Adm. Specialist: Kitty Li ) Reviewed By : (Senior Project Manager: Frank He ) Approved By : (Engineering Supervisor: Jack Zhang) Page: 2 of 32

Report No: 1932200R-RF-US-P06V02 TABLE OF CONTENTS Description Page 1. General Information ................................................................................................. 5 1.1. EUT Description ...................................................................................................... 5 1.2. Antenna information ................................................................................................ 7 1.3. Mode of Operation ................................................................................................... 8 1.4. Tested System Details ............................................................................................. 8 1.5. Configuration of Tested System ............................................................................... 9 1.6. EUT Exercise Software.......................................................................................... 10 2. Technical Test ........................................................................................................ 11 2.1. Summary of Test Result......................................................................................... 11 2.2. Test Frequency configuration:................................................................................ 12 2.3. Test Environment ................................................................................................... 13 2.4. Measurement Uncertainty...................................................................................... 13 3. Emissions in restricted frequency bands ............................................................... 14 3.1. Test Equipment ...................................................................................................... 14 3.2. Test Setup.............................................................................................................. 15 3.3. Limit ....................................................................................................................... 16 3.4. Test Procedure ...................................................................................................... 18 3.5. EUT test Axis definition .......................................................................................... 19 3.6. Test Result ............................................................................................................. 20 4. Fundamental emission output power ..................................................................... 28 4.1. Test Equipment ...................................................................................................... 28 4.2. Test Setup.............................................................................................................. 28 4.3. Limit ....................................................................................................................... 29 4.4. Test Procedure ...................................................................................................... 30 4.5. EUT test definition ................................................................................................. 31 4.6. Test Result ............................................................................................................. 32 Page: 3 of 32

Report No: 1932200R-RF-US-P06V02 History of This Test Report REPORT NO. VERSION DESCRIPTION ISSUED DATE 1932200R-RF-US-P06V02 V1.0 Initial Issued Report Mar. 26, 2019 1932200R-RF-US-P06V02 V1.1 Page 21, updated the RSE Mar. 29, 2019 data. Page: 4 of 32

Report No: 1932200R-RF-US-P06V02 1. General Information 1.1. EUT Description Product Name Ring Bridge Model No. 5B01S8 EUT Voltage DC 5V Frequency Range 902~928MHz Channel Number 9 Type of Modulation LoRa Data Rate DR4:12500bps Channel Control Auto Page: 5 of 32

Report No: 1932200R-RF-US-P06V02 Working Frequency of Each Channel Channel Frequency Channel Frequency Channel Frequency Channel Frequency 00 902.5 MHz 01 903.3 MHz 02 913.7 MHz 03 923.3 MHz 04 924.1 MHz 05 924.9 MHz 06 925.7 MHz 07 926.5 MHz 08 927.3 MHz N/A N/A N/A N/A N/A N/A Page: 6 of 32

Report No: 1932200R-RF-US-P06V02 1.2. Antenna information Model No. N/A Antenna manufacturer N/A Antenna Delivery 1*TX+1*RX 2*TX+2*RX 3*TX+3*RX 4*TX+4*RX Antenna technology SISO Basic CDD MIMO Sectorized Beam-forming Antenna Type Dipole External Sectorized PIFA PCB Internal Ceramic Chip Antenna Metal plate type F antenna Antenna Gain -1dBi Page: 7 of 32

Report No: 1932200R-RF-US-P06V02 1.3. Mode of Operation Test Modes List Mode 1: Transmit Note: 1. For portable device, radiated spurious emission was verified over X, Y, Z Axis, and shown the worst case on this report. 2. Regards to the frequency band operation for systems using DSSS modulation 3. The extreme test condition for voltage and temperature were declared by the manufacturer. 4. The reading values of all the test items contain cable loss. 1.4. Tested System Details The types for all equipment, plus descriptions of all cables used in the tested system (including inserted cards) are: No. Product Manufacturer Model No. Serial No. Power Cord 1 Notebook Lenovo Think pad x220 SUA0600195 Power by adapter A USB Cable N/A N/A N/A Shield, 0.75m B Serial Cable N/A N/A N/A Shield, 0.75m C USB Cable N/A N/A N/A Shield, 10m D Serial Cable N/A N/A N/A Shield, 10m Page: 8 of 32

Report No: 1932200R-RF-US-P06V02 1.5. Configuration of Tested System Test setup Diagram- AC Line Conducted Emission Test Test setup Diagram- Radiated Emission Page: 9 of 32

Report No: 1932200R-RF-US-P06V02 1.6. EUT Exercise Software 1 Setup the EUT and simulators as shown on above. 2 Turn on the power of all equipment. 3 Run “cmd”, and set the test mode and channel, then start continue Transmit. Page: 10 of 32

Report No: 1932200R-RF-US-P06V02 2. Technical Test 2.1. Summary of Test Result Performed Test Item Normative References Limit Result AC Power Line Conducted FCC CFR Title 47 Part 15 Subpart C: FCC 15.207 PASS Emission 2015 Section 15.207 Emissions in restricted FCC CFR Title 47 Part 15 Subpart C: FCC 15.209 PASS frequency bands 2015 Section 15.209 Emissions in non-restricted FCC CFR Title 47 Part 15 Subpart C: ≥30dBc PASS frequency bands 2015 Section 15.247(d) Radiated Emission Band FCC CFR Title 47 Part 15 Subpart C: FCC 15.209 PASS Edge 2015 15.247(d) Occupied Bandwidth FCC CFR Title 47 Part 15 Subpart C: ≥500kHz PASS 2015 Section 15.247(a)(2) Fundamental emission output FCC CFR Title 47 Part 15 Subpart C: ≤30dBm PASS power 2015 Section 15.247(b)(3) Power Spectral Density FCC CFR Title 47 Part 15 Subpart C: ≤8dBm/3kHz PASS 2015 Section 15.247(e) Antenna Requirement FCC CFR Title 47 Part 15 Subpart C: FCC 15.203 PASS 2015 Section 15.203 Page: 11 of 32

Report No: 1932200R-RF-US-P06V02 2.2. Test Frequency configuration: Channel Frequency Channel Frequency Channel Frequency Low 902.5 MHz Mid 913.7 MHz High 927.3MHz Page: 12 of 32

Report No: 1932200R-RF-US-P06V02 2.3. Test Environment Items Required (IEC 68-1) Actual Temperature (C) 15-35 21 Humidity (%RH) 25-75 50 Barometric pressure (mbar) 860-1060 950-1000 2.4. Measurement Uncertainty Test Items Uncertainty AC Power Line Conducted Emission ±2.02dB Radiated Emission Below 1GHz ±3.8 dB Above 1GHz ±3.9 dB RF Antenna Port Conducted Emission ±1.27dB Radiated Emission Band Edge ±3.9dB Occupied Bandwidth ±1kHz Power Spectral Density ±1.27dB Page: 13 of 32

Report No: 1932200R-RF-US-P06V02 3. Emissions in restricted frequency bands 3.1. Test Equipment Radiated Emission(Below 1GHz) / AC-2 Instrument Manufacturer Type No. Serial No. Cal. Date Cal. Due Date EMI Test Receiver R&S ESCI 100573 2019.03.05 2020.03.04 Loop Antenna R&S HFH2-Z2 833799/003 2018.11.07 2019.11.06 Bilog Antenna Teseq GmbH CBL6112D 27611 2018.08.10 2019.08.09 SUCOFLEX Coaxial Cable Huber+Suhner AC2-C 2019.02.28 2020.02.27 106 Temperature/Humidity Zhichen ZC1-2 AC2-TH 2019.01.05 2020.01.04 Meter Note: All equipments are calibrated with traceable calibrations. Each calibration is traceable to the national or international standards. Radiated Emission(Above 1GHz) / AC-5 Instrument Manufacturer Type No. Serial No. Cal. Date Cal. Due Date Spectrum Analyzer Agilent E4446A MY45300103 2019.01.04 2020.01.03 Preamplifier Miteq NSP1800-25 1364185 2018.05.03 2019.05.02 Preamplifier QuieTek AP-040G CHM-0906001 2018.05.06 2019.05.05 DRG Horn ETS-Lindgren 3117 00123988 2019.01.22 2020.01.20 Broad-Band Horn Antenna Schwarzbeck BBHA9170 294 2018.11.25 2019.11.23 SUCOFLEX Coaxial Cable Huber+Suhner 106 AC5-C1 2019.03.02 2020.03.01 SUCOFLEX Coaxial Cable Huber+Suhner 106 AC5-C2 2019.03.02 2020.03.01 SUCOFLEX Coaxial Cable Huber+Suhner 102 AC5-C3 2019.03.02 2020.03.01 EMI Receiver Agilent N9038A MY51210196 2018.06.10 2019.06.09 Temperature/Humidity Meter Zhichen ZC1-2 AC5-TH 2019.01.04 2020.01.03 Note: All equipments are calibrated with traceable calibrations. Each calibration is traceable to the national or international standards. Page: 14 of 32

Report No: 1932200R-RF-US-P06V02 3.2. Test Setup Below 30MHz Test Setup: 30MHz-1GHz Test Setup: Above 1GHz Test Setup: Page: 15 of 32

Report No: 1932200R-RF-US-P06V02 3.3. Limit Restricted Bands of operation Frequency Frequency Frequency Frequency (MHz) (MHz) (MHz) (GHz) 0.090 – 0.110 16.42 – 16.423 399.9 – 410 4.5 – 5.15 0.495 – 0.505 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 – 21.4 156 52525 8.37625 – 8.38675 156.7 – 156.9 2690 – 2900 22.01 – 23.12 8.81425 – 8.81475 162.0125 – 167.17 3260 – 3267 23.6 – 24.0 12.29 – 12.293 167.72 – 173.2 3332 – 3339 31.2 – 31.8 12.51975–12.52025 240 – 285 3345.8 – 3358 36.43 – 36.5 12.57675–12.57725 322 – 335.4 3600 – 4400 13.36 – 13.41 Page: 16 of 32

Report No: 1932200R-RF-US-P06V02 Restricted Band Emissions Limit Frequency Field strength Field strength Measurement distance (MHz) (μV/m) (dBμV/m) (m) 0.009 - 0.49 2400/F(kHz) 48.5 – 13.8 300(Note 1) 0.49 - 1.705 24000/F(kHz) 33.8 - 23 30(Note 1) 1.705 - 30 30 29.5 30(Note 1) 30 - 88 100 40 3(Note 2) 88 - 216 150 43.5 3(Note 2) 216 - 960 200 46 3(Note 2) Above 960 500 54 3(Note 2) Note 1: At frequencies below 30 MHz, measurements may be performed at a distance closer than that specified in the regulations; however, an attempt should be made to avoid making measurements in the near field. Pending the development of an appropriate measurement procedure for measurements performed below 30 MHz, when performing measurements at a closer distance than specified, the results shall be extrapolated to the specified distance by either making measurements at a minimum of two distances on at least one radial to determine the proper extrapolation factor or by using the square of an inverse linear distance extrapolation factor (40 dB/decade). Note 2: At frequencies at or above 30 MHz, measurements may be performed at a distance other than what is specified provided: measurements are not made in the near field except where it can be shown that near field measurements are appropriate due to the characteristics of the device; and it can be demonstrated that the signal levels needed to be measured at the distance employed can be detected by the measurement equipment. Measurements shall not be performed at a distance greater than 30 meters unless it can be further demonstrated that measurements at a distance of 30 meters or less are impractical. When performing measurements at a distance other than that specified, the results shall be extrapolated to the specified distance using an extrapolation factor of 20 dB/decade (inverse linear-distance for field strength measurements; inverse-linear-distance-squared for power density measurements). Page: 17 of 32

Report No: 1932200R-RF-US-P06V02 3.4. Test Procedure Test Method References Rule Chapter Description ANSI C63.10 11.11 Emissions in non-restricted frequency bands ANSI C63.10 11.11.2 Reference level measurement ANSI C63.10 11.11.3 Emission level measurement ANSI C63.10 11.12 Emissions in restricted frequency bands ANSI C63.10 11.12.1 Radiated emission measurements ANSI C63.10 11.12.2.7 Radiated spurious emission test ANSI C63.10 6.4 Radiated emissions from unlicensed wireless devices below 30 MHz ANSI C63.10 6.5 Radiated emissions from unlicensed wireless devices in the frequency range of 30 MHz to 1000 MHz ANSI C63.10 6.6 Radiated emissions from unlicensed wireless devices above 1 GHz ANSI C63.10 11.12.2.3 Quasi-peak measurement procedure ANSI C63.10 11.12.2.4 Peak power measurement procedure ANSI C63.10 11.12.2.5 Average power measurement procedures ANSI C63.10 11.12.2.5.1 Trace averaging with continuous EUT transmission at full power ANSI C63.10 11.12.2.5.2 Trace averaging across ON and OFF times of the EUT transmissions followed by duty cycle correction ANSI C63.10 11.12.2.5.3 Reduced VBW averaging across ON and OFF times of the EUT transmissions with max hold Page: 18 of 32

Report No: 1932200R-RF-US-P06V02 3.5. EUT test Axis definition Item Emissions in restricted frequency bands Fixed position use Device Category Mobile position use Test mode Mode 1 Radiated X Axis Y Axis Z Axis Worst Axis Worst Axis Worst Axis Conducted Chain 1 Test method Chain 1 Chain 2 Chain 1 Chain 2 Chain 3 Page: 19 of 32

Report No: 1932200R-RF-US-P06V02 3.6. Test Result Engineer: Pawn Site: AC5 Time: 2019/03/25 - 16:29 Limit: FCC_Part15.209_RE(3m) Margin: 0 Probe: Horn_3117_00167055(1-18GHz) Polarity: Horizontal EUT: Ring Bridge Power: AC 120V/60Hz Note: Mode1:Transmit at 902.5MHz by LORA No Mark Frequency Measure Level Reading Level Over Limit Limit Factor Type (MHz) (/m) () (dB) (/m) (dB) 1 2707.500 45.142 44.193 -28.858 74.000 0.949 PK 2 * 3609.500 53.156 50.473 -20.844 74.000 2.684 PK 3 4510.500 50.147 45.931 -23.853 74.000 4.216 PK 4 5411.500 51.658 46.249 -22.342 74.000 5.409 PK 5 6317.500 49.194 42.337 -24.806 74.000 6.857 PK 6 7220.000 48.657 40.976 -25.343 74.000 7.681 PK 7 8122.500 50.346 42.120 -23.654 74.000 8.225 PK 8 9025.000 49.436 40.203 -24.564 74.000 9.233 PK Page: 20 of 32

Report No: 1932200R-RF-US-P06V02 Engineer: Pawn Site: AC5 Time: 2019/03/25 - 16:36 Limit: FCC_Part15.209_RE(3m) Margin: 0 Probe: Horn_3117_00167055(1-18GHz) Polarity: Vertical EUT: Ring Bridge Power: AC 120V/60Hz Note: Mode1:Transmit at 902.5MHz by LORA No Mark Frequency Measure Level Reading Level Over Limit Limit Factor Type (MHz) (/m) () (dB) (/m) (dB) 1 2707.500 45.543 44.594 -28.457 74.000 0.949 PK 2 3609.500 51.547 48.864 -22.453 74.000 2.684 PK 3 4510.130 52.655 48.436 -21.345 74.000 4.219 PK 4 5411.500 52.841 47.432 -21.159 74.000 5.409 PK 5 6312.500 54.348 47.551 -19.652 74.000 6.798 PK 6 * 6312.500 52.112 45.314 -1.888 54.000 6.798 AV 7 7220.000 49.655 41.974 -24.345 74.000 7.681 PK 8 8122.500 48.319 40.093 -25.681 74.000 8.225 PK 9 9025.000 49.473 40.240 -24.527 74.000 9.233 PK Page: 21 of 32

Report No: 1932200R-RF-US-P06V02 Engineer: Pawn Site: AC5 Time: 2019/03/25 - 16:40 Limit: FCC_Part15.209_RE(3m) Margin: 0 Probe: Horn_3117_00167055(1-18GHz) Polarity: Horizontal EUT: Ring Bridge Power: AC 120V/60Hz Note: Mode1:Transmit at 913.7MHz by LORA No Mark Frequency Measure Level Reading Level Over Limit Limit Factor Type (MHz) (/m) () (dB) (/m) (dB) 1 2741.100 43.564 42.559 -30.436 74.000 1.005 PK 2 * 3652.000 53.762 51.220 -20.238 74.000 2.542 PK 3 4568.500 48.024 43.858 -25.976 74.000 4.166 PK 4 5479.500 51.248 45.731 -22.752 74.000 5.517 PK 5 6395.900 48.324 41.467 -25.676 74.000 6.857 PK 6 7309.600 48.438 40.694 -25.562 74.000 7.744 PK 7 8223.300 49.433 41.092 -24.567 74.000 8.341 PK 8 9137.000 49.652 40.590 -24.348 74.000 9.061 PK Page: 22 of 32

Report No: 1932200R-RF-US-P06V02 Engineer: Pawn Site: AC5 Time: 2019/03/25 - 16:45 Limit: FCC_Part15.209_RE(3m) Margin: 0 Probe: Horn_3117_00167055(1-18GHz) Polarity: Vertical EUT: Ring Bridge Power: AC 120V/60Hz Note: Mode1:Transmit at 913.7MHz by LORA No Mark Frequency Measure Level Reading Level Over Limit Limit Factor Type (MHz) (/m) () (dB) (/m) (dB) 1 2741.100 43.872 42.867 -30.128 74.000 1.005 PK 2 3652.000 55.530 52.988 -18.470 74.000 2.542 PK 3 * 3653.670 52.370 49.802 -1.630 54.000 2.567 AV 4 4570.000 51.437 47.268 -22.563 74.000 4.169 PK 5 5479.500 53.319 47.802 -20.681 74.000 5.517 PK 6 6395.900 49.125 42.268 -24.875 74.000 6.857 PK 7 7309.600 48.673 40.929 -25.327 74.000 7.744 PK 8 8223.300 49.432 41.091 -24.568 74.000 8.341 PK 9 9137.000 49.472 40.410 -24.528 74.000 9.061 PK Page: 23 of 32

Report No: 1932200R-RF-US-P06V02 Engineer: Pawn Site: AC5 Time: 2019/03/25 - 16:50 Limit: FCC_Part15.209_RE(3m) Margin: 0 Probe: Horn_3117_00167055(1-18GHz) Polarity: Horizontal EUT: Ring Bridge Power: AC 120V/60Hz Note: Mode1:Transmit at 927.3MHz by LORA No Mark Frequency Measure Level Reading Level Over Limit Limit Factor Type (MHz) (/m) () (dB) (/m) (dB) 1 2781.900 42.453 41.314 -31.547 74.000 1.139 PK 2 * 3711.500 53.274 50.375 -20.726 74.000 2.899 PK 3 4636.500 47.327 43.126 -26.673 74.000 4.201 PK 4 5563.800 47.285 41.655 -26.715 74.000 5.630 PK 5 6491.100 48.491 41.470 -25.509 74.000 7.021 PK 6 7418.400 49.822 41.919 -24.178 74.000 7.903 PK 7 8345.700 49.668 41.444 -24.332 74.000 8.224 PK 8 9273.000 48.327 39.189 -25.673 74.000 9.137 PK Page: 24 of 32

Report No: 1932200R-RF-US-P06V02 Engineer: Pawn Site: AC5 Time: 2019/03/25 - 17:08 Limit: FCC_Part15.209_RE(3m) Margin: 0 Probe: Horn_3117_00167055(1-18GHz) Polarity: Vertical EUT: Ring Bridge Power: AC 120V/60Hz Note: Mode1:Transmit at 927.3MHz by LORA No Mark Frequency Measure Level Reading Level Over Limit Limit Factor Type (MHz) (/m) () (dB) (/m) (dB) 1 2781.900 42.118 40.979 -31.882 74.000 1.139 PK 2 3711.500 54.631 51.732 -19.369 74.000 2.899 PK 3 * 3711.540 52.766 49.867 -1.234 54.000 2.899 AV 4 4636.500 49.238 45.037 -24.762 74.000 4.201 PK 5 5563.800 49.547 43.917 -24.453 74.000 5.630 PK 6 6491.100 51.184 44.163 -22.816 74.000 7.021 PK 7 7418.400 49.439 41.536 -24.561 74.000 7.903 PK 8 8345.700 49.482 41.258 -24.518 74.000 8.224 PK 9 9273.000 49.173 40.035 -24.827 74.000 9.137 PK Note: 1. Measured Level = Reading Level + Factor. 2. The test frequency range, 9kHz~30MHz, the worst case are at least 20dB below the limits, therefore no data appear in the report. 3. This limit applies for using average detector, if the test result on peak is lower than average limit, then average measurement needn’t be performed. 4. As the radiated emission was performed, so conducted emission was not tested. Page: 25 of 32

Report No: 1932200R-RF-US-P06V02 The worst case of Radiated Emission below 1GHz: Engineer: Leon Site: AC2 Time: 2019/03/25 Limit: FCC_Part15.209_RE(3m)_ClassB Margin: 0 Probe: AC2_3M(30-1000M) Polarity: Horizontal EUT: Ring Bridge Power: AC 120V/60Hz Note: Mode 1 No Mark Frequency Measure Level Reading Level Over Limit Limit Probe Cable Amp Ant Pos Table Pos Type (MHz) (dBuV/m) (dBuV) (dB) (dBuV/m) (dB/m) (dB) (dB) (cm) (deg) 1 32.425 28.578 1.200 -11.422 40.000 20.733 6.645 0.000 300 208 QP 2 106.874 20.345 3.600 -23.155 43.500 9.824 6.921 0.000 400 138 QP 3 248.250 26.911 8.900 -19.089 46.000 10.450 7.561 0.000 200 0 QP 4 334.823 27.520 4.600 -18.480 46.000 15.185 7.735 0.000 100 324 QP 5 429.034 33.398 6.800 -12.602 46.000 18.622 7.975 0.000 300 316 QP 6 * 865.898 35.290 2.300 -10.710 46.000 23.822 9.168 0.000 300 151 QP Note: 1. " * ", means this data is the worst emission level. 2. Measurement Level = Reading Level + Factor(Probe+Cable-Amp). Page: 26 of 32

Report No: 1932200R-RF-US-P06V02 Engineer: Leon Site: AC2 Time: 2019/03/25 Limit: FCC_Part15.209_RE(3m)_ClassB Margin: 0 Probe: AC2_3M(30-1000M) Polarity: Vertical EUT: Ring Bridge Power: AC 120V/60Hz Note: Mode 1 No Mark Frequency Measure Level Reading Level Over Limit Limit Probe Cable Amp Ant Pos Table Pos Type (MHz) (dBuV/m) (dBuV) (dB) (dBuV/m) (dB/m) (dB) (dB) (cm) (deg) 1 54.250 21.468 3.600 -18.532 40.000 11.250 6.618 0.000 100 32 QP 2 104.569 26.692 4.300 -16.808 43.500 15.487 6.905 0.000 100 340 QP 3 164.466 28.216 8.600 -15.284 43.500 12.355 7.261 0.000 100 32 QP 4 248.405 35.333 10.900 -10.667 46.000 16.871 7.562 0.000 100 74 QP 5 455.224 33.569 7.500 -12.431 46.000 18.070 7.999 0.000 300 180 QP 6 * 895.846 35.538 1.900 -10.462 46.000 24.399 9.240 0.000 200 309 QP Note: 1. " * ", means this data is the worst emission level. 2. Measurement Level = Reading Level + Factor(Probe+Cable-Amp). Page: 27 of 32

Report No: 1932200R-RF-US-P06V02 4. Fundamental emission output power 4.1. Test Equipment Fundamental emission output power/ TR-8 Instrument Manufacturer Type No. Serial No. Cal. Date Cal. Due Date Spectrum Analyzer Agilent E4446A MY45300103 2019.01.04 2020.01.03 Spectrum Analyzer Agilent N9010A MY48030494 2019.02.04 2020.02.03 Wideband Peak Power Meter Anritsu ML2495A 0905006 2018.10.14 2019.10.13 Power Sensor Anritsu MA2411B 0846014 2018.10.14 2019.10.13 Temperature/Humidity Meter zhicheng ZC1-2 TR8-TH 2018.04.10 2019.04.09 Note: All equipments are calibrated with traceable calibrations. Each calibration is traceable to the national or international standards. 4.2. Test Setup Fundamental emission output power test setup Page: 28 of 32

Report No: 1932200R-RF-US-P06V02 4.3. Limit Fundamental emission output power Limit GTX ＜6dBi Pout≤30dBm GTX ＞6dBi Non-Fix point-point Pout≤30-( GTX -6) Fix point-point Pout≤30-[(GTX-6)]/3 Point-to-multipoint Pout≤30-(GTX-6) Overlap Beams Pout≤30-[(GTX-6)]/3 Aggregate power transmitted Pout≤30-[(GTX-6)]/3 simultaneously on all beams single directional beam Pout≤30-[(GTX-6)]/3+8dB Note 1 : GTX directional gain of transmitting antennas. Note 2 : Pout is maximum peak conducted output power . Page: 29 of 32

Report No: 1932200R-RF-US-P06V02 4.4. Test Procedure Fundamental emission output power Test Method References Rule Chapter Description ANSI C63.10 11.9 Fundamental emission output power ANSI C63.10 11.9.1 Maximum peak conducted output power ANSI C63.10 11.9.1.1 RBW ≥ DTS bandwidth ANSI C63.10 11.9.1.2 Integrated band power method ANSI C63.10 11.9.1.3 PKPM1 Peak power meter method ANSI C63.10 11.9.2 Maximum conducted (average) output power ANSI C63.10 11.9.2.2 Measurement using a spectrum analyzer (SA) ANSI C63.10 11.9.2.2.2 Method AVGSA-1(Duty cycle≥98%) ANSI C63.10 11.9.2.2.3 Method AVGSA-1A(Duty cycle≥98%) ANSI C63.10 11.9.2.2.4 Method AVGSA-2(Duty cycle≤98%) ANSI C63.10 11.9.2.2.5 Method AVGSA-2A(Duty cycle≤98%) ANSI C63.10 11.9.2.2.4 Method AVGSA-3 ANSI C63.10 11.9.2.2.5 Method AVGSA-3A ANSI C63.10 11.9.2.3 Measurement using a power meter (PM) ANSI C63.10 11.9.2.3.1 Method AVGPM ANSI C63.10 11.9.2.3.2 Method AVGPM-G Page: 30 of 32

Report No: 1932200R-RF-US-P06V02 4.5. EUT test definition Item Fundamental emission output power Fixed position use Device Category Mobile position use Test mode Mode 1 Radiated X Axis Y Axis Z Axis Worst Axis Worst Axis Worst Axis Conducted Chain 0 Test method Chain 0 Chain 1 Chain 0 Chain 1 Chain 2 Page: 31 of 32

Report No: 1932200R-RF-US-P06V02 4.6. Test Result Product Name : Ring Bridge Power : AC 120V/60Hz Test Mode : Mode1 Test Site : TR8 Test Date : 2019.03.25 Test Average Power Antenna Gain Limit Mode Channel Frequency Output Result (dBi) (dBm) (MHz) (dBm) 1 Low 902.5 18.07 -1 30 Pass 1 Mid 913.7 18.18 -1 30 Pass 1 High 927.3 18.14 -1 30 Pass The End Page: 32 of 32


Document Created: 2019-03-31 16:34:42
Document Modified: 2019-03-31 16:34:42
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