Test Report

FCC ID: YZZGSC3510

Test Report

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FCCID_4350938

FCC PART 15B, CLASS B TEST REPORT For Grandstream Networks, Inc. 126 Brookline Ave., 3rd Floor Boston, MA 02215, USA FCC ID: YZZGSC3510 Report Type: Product Type: Original Report SIP Two-Way Interco m Speaker Report Number: RSZ190315003-00A Report Date: 2019-06-28 Alvin Huang Reviewed By: Lab Manager Prepared By: Bay Area Compliance Laboratories Corp. (Shenzhen) 6/F., West Wing, Third Phase of Wanli Industrial Building, Shihua Road, Futian Free Trade Zone, Shenzhen, Guangdong, China Tel: +86-755-33320018 Fax: +86-755-33320008 www.baclcorp.com.cn Note: This report must not be used by the customer to claim product certification, approval, or endorsement by A2LA* or any agency of the Federal Government. * This report may contain data that are not covered by the A2LA accreditation and are marked with an asterisk “*”. The information marked # is provided by the applicant, the laboratory is not responsible for its authenticity.

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A TABLE OF CONTENTS GENERAL INFORMATION .......................................................................................................................................3 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) .....................................................................................3 OBJECTIVE ...................................................................................................................................................................3 RELATED SUBMITTAL(S)/GRANT(S) .............................................................................................................................3 TEST METHODOLOGY ..................................................................................................................................................3 MEASUREMENT UNCERTAINTY ....................................................................................................................................4 TEST FACILITY .............................................................................................................................................................4 SYSTEM TEST CONFIGURATION ..........................................................................................................................5 DESCRIPTION OF TEST CONFIGURATION ......................................................................................................................5 EUT EXERCISE SOFTWARE ..........................................................................................................................................5 SPECIAL ACCESSORIES .................................................................................................................................................5 EQUIPMENT MODIFICATIONS .......................................................................................................................................5 SUPPORT EQUIPMENT LIST AND DETAILS ....................................................................................................................5 EXTERNAL I/O CABLE..................................................................................................................................................5 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................6 SUMMARY OF TEST RESULTS ...............................................................................................................................7 TEST EQUIPMENT LIST ...........................................................................................................................................8 FCC §15.107 – AC LINE CONDUCTED EMISSIONS .............................................................................................9 APPLICABLE STANDARD ..............................................................................................................................................9 EUT SETUP ..................................................................................................................................................................9 EMI TEST RECEIVER SETUP .........................................................................................................................................9 TEST PROCEDURE ........................................................................................................................................................9 CORRECTED FACTOR & MARGIN CALCULATION .......................................................................................................10 TEST RESULTS SUMMARY ..........................................................................................................................................10 TEST DATA ................................................................................................................................................................10 FCC §15.109 - RADIATED SPURIOUS EMISSIONS ............................................................................................13 APPLICABLE STANDARD ............................................................................................................................................13 EUT SETUP ................................................................................................................................................................13 EMI TEST RECEIVER SETUP .......................................................................................................................................14 TEST PROCEDURE ......................................................................................................................................................14 CORRECTED AMPLITUDE & MARGIN CALCULATION .................................................................................................14 TEST RESULTS SUMMARY ..........................................................................................................................................15 TEST DATA ................................................................................................................................................................15 FCC Part 15B, Class B Page 2 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A GENERAL INFORMATION Product Description for Equipment under Test (EUT) Product SIP Two-Way Intercom Speaker Tested Model GSC3510 Multiple Model# GSC3505 Voltage Range DC 48V from POE Measure 210 mm (L) * 210 mm (W) * 72 mm (H) Highest operating frequency 5825MHz Date of Test 2019/06/13~2019/06/27 Sample serial number 190315003 Received date 2019/03/15 Sample/EUT Status Good condition Notes: This series products model: GSC3505 and GSC3510 are identical schematics, Model GSC3510 was selected for fully testing, the detailed information can be referred to the declaration which was stated and guaranteed by the applicant. Objective This test report is prepared on behalf of Grandstream Networks, Inc. in accordance with Part 2-Subpart J, Part 15-Subparts A, B of the Federal Communication Commissions rules. The objective of the manufacturer is to determine the compliance of the EUT with FCC Part 15 B. Related Submittal(s)/Grant(s) FCC Part 15.247 DTS&DSS and Part 15.407 NII submissions with FCC ID: YZZGSC3510. Test Methodology All measurements contained in this report were conducted with ANSI C63.4-2014, 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. All emissions measurement was performed at Bay Area Compliance Laboratories Corp. (Shenzhen). The radiated testing was performed at an antenna-to-EUT distance of 3 meters. FCC Part 15B, Class B Page 3 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A Measurement Uncertainty All measurements involve certain levels of uncertainties, especially in field of EMC. The factors contributing to uncertainties are spectrum analyzer, cable loss, antenna factor calibration, antenna directivity, antenna factor variation with height, antenna phase center variation, antenna factor frequency interpolation, measurement distance variation, site imperfections, mismatch (average), and system repeatability. Based on CISPR 16-4-2:2011, the expended combined standard uncertainty of test at Bay Area Compliance Laboratories Corp. (Shenzhen) is shown as below. And the uncertainty will be taken into consideration for the test data recorded in the report Parameter uncertainty Conducted Emissions ±1.95dB Emissions, Below 1GHz ±4.75dB radiated Above 1GHz ±4.88dB Note: Otherwise required by the applicant or Product Regulations, Decision Rule in this report did not consider the uncertainty. Test Facility The Test site used by Bay Area Compliance Laboratories Corp. (Shenzhen) to collect test data is located on the 6/F., West Wing, Third Phase of Wanli Industrial Building, Shihua Road, Futian Free Trade Zone, Shenzhen, Guangdong, China. The test site has been approved by the FCC under the KDB 974614 D01 and is listed in the FCC Public Access Link (PAL) database, FCC Registration No.: 342867, the FCC Designation No.: CN1221. The test site has been registered with ISED Canada under ISED Canada Registration Number 3062B. FCC Part 15B, Class B Page 4 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A SYSTEM TEST CONFIGURATION Description of Test Configuration The system was configured for testing in a manufacturer testing fashion. EUT Exercise Software No exercise software was used. Special Accessories No special accessory. Equipment Modifications No modification was made to the EUT tested. Support Equipment List and Details Manufacturer Description Model Serial Number NETGEAR POE FS108P 1DL1733C00493 Dcoma POE PSE801G Un-known SAGEMCOM Router F@ST1704N 3c81d839027c HP Laptop Compaq CQ45 5CG334081V Grandstream Speaker GSC3510 Un-known External I/O Cable Cable Description Length (m) From/Port To Unshielded Detachable AC Cable 1.0 LISN POE Unshielded Detachable RJ45 Cable 1.2 POE Router Unshielded Detachable RJ45 Cable 1.0 Router POE Unshielded Detachable RJ45 Cable 1.3 Router Laptop Unshielded Detachable RJ45 Cable 1.2 Speaker POE FCC Part 15B, Class B Page 5 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A Block Diagram of Test Setup For conducted emission: LISN EUT POE 10cm Router 1.0 Meter Laptop Speaker POE Non-Conductive Table 80 cm above Ground Plane 1.5 Meters FCC Part 15B, Class B Page 6 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A SUMMARY OF TEST RESULTS FCC Rules Description of Test Results §15.107 AC Line Conducted Emissions Compliance §15.109 Radiated Spurious Emissions Compliance FCC Part 15B, Class B Page 7 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A TEST EQUIPMENT LIST Calibration Calibration Manufacturer Description Model Serial Number Date Due Date AC Line Conducted Emission Test Rohde & Schwarz EMI Test Receiver ESCS30 100176 2018-07-11 2019-07-11 3560.6650.12- Rohde & Schwarz LISN ENV216 2019-01-25 2020-01-25 101613-Yb Rohde & Schwarz Transient Limiter ESH3Z2 DE25985 2019-03-02 2020-03-02 Rohde & Schwarz CE Test software EMC 32 V8.53.0 NCR NCR Conducted Emission UF A210B-1- Unknown 78652 2018-11-12 2019-11-12 Cable 0720-504504 Radiated Emission Test A.H. System Horn Antenna SAS-200/571 135 2018-09-01 2021-08-31 Rohde & Schwarz Signal Analyzer FSV40 101473 2019-01-09 2020-01-08 Sunol Sciences Broadband Antenna JB1 A040904-1 2017-12-22 2020-12-21 COM-POWER Pre-amplifier PA-122 181919 2018-11-12 2019-11-12 Sonoma instrument Amplifier 310N 186238 2018-11-12 2019-11-12 Ducommun Horn Antenna ARH-4223-02 1007726-04 2017-12-29 2020-12-28 Technologies Ducommun Horn Antenna ARH-4283-02 1007726-03 2017-12-29 2020-12-28 Technologies QLW- Heatsink Required Amplifier 15964001002 2018-11-12 2019-11-12 18405536-J0 1316.3003K03- Rohde & Schwarz EMI Test Receiver ESR 2018-07-11 2019-07-11 101746-zn UTiFLEX UFA147A- MFR64639 RF Cable 2018-11-12 2019-11-12 MICRO-C0AX 2362-100100 231029-003 Ducommun RF Cable 104PEA 218124002 2018-11-12 2019-11-12 technologies Ducommun RF Cable RG-214 1 2018-11-12 2019-11-12 technologies Ducommun RF Cable RG-214 2 2018-11-12 2019-11-12 technologies Rohde & Schwarz Auto test software EMC 32 V9.10 NCR NCR * Statement of Traceability: Bay Area Compliance Laboratories Corp. (Shenzhen) attests that all calibrations have been performed in accordance to requirements that traceable to National Primary Standards and International System of Units (SI). FCC Part 15B, Class B Page 8 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A FCC §15.107 – AC LINE CONDUCTED EMISSIONS Applicable Standard According to FCC §15.107 EUT Setup The measurement procedure of EUT setup is according with per ANSI C63.4-2014. The related limit was specified in FCC Part 15.107 Class B. The spacing between the peripherals was 10 cm. EMI Test Receiver Setup The EMI test receiver was set to investigate the spectrum from 150 kHz to 30 MHz. During the conducted emission test, the EMI test receiver was set with the following configurations: Frequency Range IF B/W 150 kHz – 30 MHz 9 kHz Test Procedure During the conducted emission test, the host PC was connected to the first LISN and the other relevant equipments were conncected to the second LISN. Maximizing procedure was performed on the six (6) highest emissions of the EUT. All data was recorded in the Quasi-peak and average detection mode. FCC Part 15B, Class B Page 9 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A Corrected Factor & Margin Calculation The Corrected factor is calculated by adding LISN/ISN VDF (Voltage Division Factor), Cable Loss and Transient Limiter Attenuation. The basic equation is as follows: Correction Factor = LISN VDF + Cable Loss + Transient Limiter Attenuation The “Margin” column of the following data tables indicates the degree of compliance with the applicable limit. For example, a margin of 7 dB means the emission is 7 dB below the limit. The equation for margin calculation is as follows: Margin = Limit – Corrected Amplitude Test Results Summary According to the recorded data in following table, the EUT complied with the FCC Part 15.107, Refer to CISPR16-4-2:2011 and CISPR 16-4-1:2009, the measured level is in compliance with the limit if Lm + U(Lm) ≤ Llim + Ucispr In BACL., U(Lm) is less than Ucispr, if Lm is less than Llim, it implies that the EUT complies with the limit. Test Data Environmental Conditions Temperature: 25 ℃ Relative Humidity: 50 % ATM Pressure: 101.0 kPa The testing was performed by Joson Xiao on 2019-06-13. FCC Part 15B, Class B Page 10 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A EUT Operation Mode: Working (two different models are test, and worst case is the GSC3510, the data as below) AC 120V/60 Hz, Line 90 80 70 QP 60 Level in dBμ AV 50 40 30 20 10 0 150k 300 400 500 800 1M 2M 3M 4M 5M 6 8 10M 20M 30M Frequency in Hz Corrected Correction Frequency Limit Margin Detector Amplitude Factor (MHz) (dBμV) (dB) (PK/Ave./QP) (dBμV) (dB) 0.150000 60.8 19.8 66.0 5.2 QP 0.181500 54.8 19.9 64.4 9.6 QP 0.182500 54.8 19.8 64.4 9.6 QP 0.221500 50.7 19.8 62.8 12.1 QP 0.955690 45.9 19.8 56.0 10.1 QP 4.419070 42.5 19.9 56.0 13.5 QP 0.150000 47.3 19.8 56.0 8.7 Ave. 0.181500 40.6 19.9 54.4 13.8 Ave. 0.182500 41.3 19.8 54.4 13.1 Ave. 0.221500 42.0 19.8 52.8 10.7 Ave. 0.955690 43.4 19.8 46.0 2.6 Ave. 4.419070 33.6 19.9 46.0 12.4 Ave. FCC Part 15B, Class B Page 11 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A AC 120V/60 Hz, Neutral 90 80 70 QP 60 Level in dBμ AV 50 40 30 20 10 0 150k 300 400 500 800 1M 2M 3M 4M 5M 6 8 10M 20M 30M Frequency in Hz Corrected Correction Frequency Limit Margin Detector Amplitude Factor (MHz) (dBμV) (dB) (PK/Ave./QP) (dBμV) (dB) 0.150000 60.5 19.8 66.0 5.5 QP 0.178500 54.5 19.8 64.6 10.1 QP 0.181500 54.8 19.8 64.4 9.6 QP 0.221500 50.2 19.8 62.8 12.6 QP 0.955690 46.8 19.8 56.0 9.2 QP 4.485870 40.1 19.9 56.0 15.9 QP 0.150000 47.3 19.8 56.0 8.7 Ave. 0.178500 37.8 19.8 54.6 16.8 Ave. 0.181500 40.3 19.8 54.4 14.1 Ave. 0.221500 41.8 19.8 52.8 11.0 Ave. 0.955690 44.4 19.8 46.0 1.6 Ave. 4.485870 30.5 19.9 46.0 15.5 Ave. Note: 1) Correction Factor =LISN VDF (Voltage Division Factor) + Cable Loss + Transient Limiter Attenuation 2) Corrected Amplitude = Reading + Correction Factor 3) Margin = Limit – Corrected Amplitude FCC Part 15B, Class B Page 12 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A FCC §15.109 - RADIATED SPURIOUS EMISSIONS Applicable Standard FCC §15.109 EUT Setup Below 1GHz: Above 1GHz: 1m or The radiated emission tests were performed in the 3 meters chamber test site, using the setup accordance with the ANSI C63.4-2014. The specification used was the FCC Part 15.109 Class B limits. FCC Part 15B, Class B Page 13 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A The external I/O cables were draped along the test table and formed a bundle 30 to 40 cm long in the middle. The spacing between the peripherals was 10 cm. EMI Test Receiver Setup The system was investigated from 30 MHz to 30 GHz. During the radiated emission test, the EMI test receiver was set with the following configurations: Frequency Range RBW Video B/W IF B/W Measurment 30 MHz – 1000 MHz 100 kHz 300 kHz 120 kHz QP 1MHz 3 MHz / PK Above 1 GHz 1MHz 10 Hz / Ave. Test Procedure Maximizing procedure was performed on the highest emissions to ensure that the EUT complied with all installation combinations. All data was recorded in the Quasi-peak detector mode from 30 MHz to 1 GHz and PK and average detector modes for frequencies above 1 GHz. Corrected Amplitude & Margin Calculation The Corrected Amplitude is calculated by adding the Antenna Factor and Cable Loss, and subtracting the Amplifier Gain from the Meter Reading. The basic equation is as follows: Corrected Amplitude = Meter Reading + Antenna Factor + Cable Loss - Amplifier Gain The “Margin” column of the following data tables indicates the degree of compliance with the applicable limit. For example, a margin of 7 dB means the emission is 7 dB below the limit. The equation for margin calculation is as follows: Margin = Limit – Corrected Amplitude For above 18GHz testing: According to ANSI C63.10-2013,9.4: For field strength measurements made at other than the distance at which the applicable limit is specified,extrapolate the measured field strength to the field strength at the distance specified by the limit using an inverse distance correction factor (20 dB/decade of distance). In some cases, a different distance correction factor may be required; FCC Part 15B, Class B Page 14 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A So the extrapolation factor of 1m is 20*log(1/3)= -9.5 dB Test Results Summary According to the data in the following table, the EUT complied with the FCC §15.109 Class B, Refer to CISPR16-4-2:2011 and CISPR 16-4-1:2009, the measured level is in compliance with the limit if Lm + U(Lm) ≤ Llim + Ucispr In BACL, U(Lm) is less than Ucispr, if Lm is less than Llim, it implies that the EUT complies with the limit. Test Data Environmental Conditions Temperature: 25~26 ℃ Relative Humidity: 52~55 % ATM Pressure: 101.0 kPa The testing was performed by Baston Chen and Alan He on 2019-06-13 and 2019-06-27. EUT Operation Mode: Working FCC Part 15B, Class B Page 15 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A Model: GSC3510 30 MHz~1 GHz: 80 70 60 FCC Part 15 Class B Electric Field Strength QP-3m 50 Level in dBμV/ 40 30 20 10 0 30M 50 60 80 100M 200 300 400 500 800 1G Frequency in Hz Corrected Antenna Turntable Correction Frequency Antenna Limit Margin Amplitude height position Factor (MHz) Polarity (dBμV/m) (dB) (dBμV/m) (cm) (degree) (dB/m) 35.404625 29.47 120.0 V 186.0 -10.8 40.00 10.53 36.129250 29.53 100.0 V 89.0 -11.3 40.00 10.47 53.830625 29.58 108.0 V 14.0 -19.8 40.00 10.42 62.675125 25.69 131.0 V 225.0 -20.3 40.00 14.31 837.553500 28.22 139.0 V 19.0 5.7 46.00 17.78 958.478750 29.75 177.0 H 237.0 9.3 46.00 16.25 FCC Part 15B, Class B Page 16 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A 1 GHz – 30 GHz: Receiver Rx Antenna Corrected Corrected FCC Part 15B Frequency Turntable Factor Amplitude (MHz) Reading Degree Height Polar PK/QP/Ave. (dB/m) (dBuV/m) Limit Margin (dBμV) (m) (H / V) (dBuV/m) (dB) 1132.26 47.29 PK 15 2.4 H -5.43 41.86 74 32.14 1132.26 30.12 Ave. 15 2.4 H -5.43 24.69 54 29.31 1132.26 47.15 PK 238 1.2 V -5.43 41.72 74 32.28 1132.26 30.03 Ave. 238 1.2 V -5.43 24.60 54 29.40 2464.93 51.67 PK 110 1.1 H -0.25 51.42 74 22.58 2464.93 45.11 Ave. 110 1.1 H -0.25 44.86 54 9.14 2464.93 48.94 PK 228 2.3 V -0.25 48.69 74 25.31 2464.93 42.44 Ave. 228 2.3 V -0.25 42.19 54 11.81 Note: 1) Correction Factor=Antenna factor (RX) + cable loss – amplifier factor 2) Corrected Amplitude = Correction Factor + Reading 3) Margin = Limit - Corrected Amplitude FCC Part 15B, Class B Page 17 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A Model: GSC3505 30 MHz~1 GHz: 80 70 60 FCC Part 15 Class B Electric Field Strength QP-3m 50 Level in dBμV/ 40 30 20 10 0 30M 50 60 80 100M 200 300 400 500 800 1G Frequency in Hz Corrected Antenna Turntable Correction Frequency Antenna Limit Margin Amplitude height position Factor (MHz) Polarity (dBμV/m) (dB) (dBμV/m) (cm) (degree) (dB/m) 38.926125 22.75 100.0 V 279.0 -13.1 40.00 17.25 45.293250 29.50 116.0 V 0.0 -17.4 40.00 10.50 54.159375 32.76 116.0 V 0.0 -19.9 40.00 7.24 62.968125 28.85 211.0 V 332.0 -20.3 40.00 11.15 250.018125 29.61 106.0 V 249.0 -14.1 46.00 16.39 955.647250 29.13 116.0 V 194.0 9.5 46.00 16.87 FCC Part 15B, Class B Page 18 of 19

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ190315003-00A 1 GHz – 30 GHz: Receiver Rx Antenna Corrected Corrected FCC Part 15B Frequency Turntable Factor Amplitude (MHz) Reading Degree Height Polar PK/QP/Ave. (dB/m) (dBuV/m) Limit Margin (dBμV) (m) (H / V) (dBuV/m) (dB) 1070.20 47.53 PK 223 2.2 H -5.73 41.80 74 32.20 1070.20 28.10 Ave. 223 2.2 H -5.73 22.37 54 31.63 1070.20 48.36 PK 274 2.0 V -5.73 42.63 74 31.37 1070.20 28.25 Ave. 274 2.0 V -5.73 22.52 54 31.48 2460.60 59.96 PK 330 1.4 H -0.25 59.71 74 14.29 2460.60 28.39 Ave. 330 1.4 H -0.25 28.14 54 25.86 2460.60 63.05 PK 341 1.3 V -0.25 62.80 74 11.20 2460.60 31.03 Ave. 341 1.3 V -0.25 30.78 54 23.22 Note: 4) Correction Factor=Antenna factor (RX) + cable loss – amplifier factor 5) Corrected Amplitude = Correction Factor + Reading 6) Margin = Limit - Corrected Amplitude ***** END OF REPORT ***** FCC Part 15B, Class B Page 19 of 19


Document Created: 2019-07-11 05:35:40
Document Modified: 2019-07-11 05:35:40
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