MTi180503E010-FCC PART 15.249

FCC ID: 2AJ3O-U3

Test Report

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FCCID_3868664

Test Report FCC ID: 2AJ3O-U3 Date of issue: May 03, 2018 Report Number: MTi180503E010 Sample Description: MICROPHONE WIRELESS SYSTEM Model(s): U3 Applicant: SHENZHEN FZONE TECHNOLOGY CO.,LTD Address: 2nd floor, Building12, Xicheng Industrial Area, Xixiang Town, Baoan District, Shenzhen Guangdong China Date of Test: Apr.19, 2018 to May 03, 2018 Shenzhen Microtest Co., Ltd. http://www.mtitest.com This test report is valid for the tested samples only. It cannot be reproduced except in full without prior written consent of Shenzhen Microtest Co., Ltd. Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 2 of 26 - Report No.: MTi180503E010 Table of Contents 1 GENERAL DESCRIPTION ..................................................................................................................................... 4 1.1 FEATURE OF EQUIPMENT UNDER TEST (EUT) ................................................................................................................... 4 1.2 OPERATION CHANNEL LIST ........................................................................................................................................... 4 1.3 TEST FREQUENCY CHANNEL ......................................................................................................................................... 4 1.4 EUT OPERATION MODE .............................................................................................................................................. 4 1.5 ANCILLARY EQUIPMENT LIST ......................................................................................................................................... 5 2 SUMMARY OF TEST RESULT ............................................................................................................................... 5 3 TEST FACILITIES AND ACCREDITATIONS .............................................................................................................. 6 3.1 TEST LABORATORY...................................................................................................................................................... 6 3.2 ENVIRONMENTAL CONDITIONS ..................................................................................................................................... 6 3.3 MEASUREMENT UNCERTAINTY...................................................................................................................................... 6 3.4 TEST SOFTWARE ........................................................................................................................................................ 6 4 LIST OF TEST EQUIPMENT .................................................................................................................................. 7 5 TEST RESULT ...................................................................................................................................................... 8 5.1 ANTENNA REQUIREMENT ............................................................................................................................................ 8 5.1.1 Standard requirement ................................................................................................................................. 8 5.1.2 EUT Antenna ............................................................................................................................................... 8 5.2 AC POWER LINE CONDUCTED EMISSION ......................................................................................................................... 9 5.2.1 Limits ........................................................................................................................................................... 9 5.2.2 Test setup .................................................................................................................................................... 9 5.2.3 Test procedure ............................................................................................................................................. 9 5.2.4 Test results ................................................................................................................................................ 11 5.3 FIELD STRENGTH OF FUNDAMENTAL AND HARMONIC EMISSIONS ....................................................................................... 13 5.3.1 Limits ......................................................................................................................................................... 13 5.3.2 Test Method .............................................................................................................................................. 13 5.3.3 Test Result ................................................................................................................................................. 14 5.4 20DB AND 99% BANDWIDTH .................................................................................................................................... 15 5.4.1 Limits ......................................................................................................................................................... 15 5.4.2 Test method .............................................................................................................................................. 15 5.4.3 Test result.................................................................................................................................................. 16 5.5 RADIATED SPURIOUS EMISSION ................................................................................................................................... 18 5.5.1 Limit .......................................................................................................................................................... 18 5.5.2 Test method .............................................................................................................................................. 19 5.5.3 Test Result ................................................................................................................................................. 20 PHOTOGRAPHS OF THE TEST SETUP ...........................................................................................................................25 Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 3 of 26 - Report No.: MTi180503E010 Test Result Certification Applicant’s name: SHENZHEN FZONE TECHNOLOGY CO.,LTD 2nd floor, Building12, Xicheng Industrial Area, Xixiang Town, Address: Baoan District, Shenzhen Guangdong China Manufacture's Name: SHENZHEN FZONE TECHNOLOGY CO.,LTD 2nd floor, Building12, Xicheng Industrial Area, Xixiang Town, Address: Baoan District, Shenzhen Guangdong China Product name: MICROPHONE WIRELESS SYSTEM Trademark: Model name: U3 Standards: FCC Part 15.249 Test Procedure: ANSI C63.10-2013 This device described above has been tested by Shenzhen Microtest Co., Ltd. and the test results show that the equipment under test (EUT) compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. Tested by: Demi Mu May. 03, 2018 Reviewed by: Blue Zheng May. 03, 2018 Approved by: Smith Chen May. 03, 2018 Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 4 of 26 - Report No.: MTi180503E010 1 General description 1.1 Feature of equipment under test (EUT) Equipment: MICROPHONE WIRELESS SYSTEM Trade Name: Model Name: U3 Serial Model: N/A Model Difference: N/A Operation Frequency: 2400-2483.5MHz Modulation Type: GFSK Antenna Tpye: Helical antenna Antenna Gain: 2 dBi Max. Field Strength 78.83 dBuV/m Power supply DC 5V from AC adapter 120V/60Hz Hardware Version: V 0.52 Software Version: V 0.52 1.2 Operation channel list Channel Frequency(MHz) 1 2402 2480 2482 2 2408 2472 2474 3 2416 2464 2466 4 2434 2440 2442 5 2427 2448 2450 6 2422 2456 2458 1.3 Test Frequency Channel Channel Frequency(MHz) Low 2402 Middle 2448 High 2482 1.4 EUT operation mode During testing, RF test program provided by the manufacture to control the Tx operation followed the test requirement. Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 5 of 26 - Report No.: MTi180503E010 1.5 Ancillary equipment list Equipment Model S/N Manufacturer microphone SM58 / / 2 Summary of Test Result Test procedures according to the technical standards: Item FCC Part No. Description of Test Result 1 FCC Part15.203 Antenna Requirement Pass AC power line conducted 2 FCC Part15.207 Pass emission Field strength of fundamental 3 FCC Part15.249(a) Pass and harmonic emissions 4 FCC Part 15.215 20dB and 99% Bandwidth Pass 5 FCC Part15.249(d) Radiated spurious emission Pass Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 6 of 26 - Report No.: MTi180503E010 3 Test Facilities and Accreditations 3.1 Test laboratory Test Laboratory Shenzhen Microtest Co., Ltd No.102A & 302A, East Block, Hengfang Industrial Park, Location Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China FCC Registration No. 448573 3.2 Environmental conditions Temperature: 20ºC~30ºC Humidity 30%~70% Atmospheric 98kPa~101kPa pressure 3.3 Measurement uncertainty The reported uncertainty of measurement y ± U，where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2，providing a level of confidence of approximately 95 % RF frequency 1 x 10-7 RF power, conducted ± 1 dB Conducted emission(150kHz~30MHz) ± 2.5 dB Radiated emission(30MHz~1GHz) ± 4.2 dB Radiated emission (above 1GHz) ± 4.3 dB Temperature ±1 degree Humidity ±5 % 3.4 Test software Software Name Manufacturer Model Version RF Test System Farad LZ-RF Lz_Rf 3A3 Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 7 of 26 - Report No.: MTi180503E010 4 List of test equipment Equipmen Equipment Manufactur Calibratio Model Serial No. Due date t No. Name er n date Spectrum MTI-E001 Agilent E4407B MY41441082 2017/09/18 2018/09/17 Analyzer CMU 200 universal radio Rohde&schw MTI-E002 CMU 200 114587 2017/09/18 2018/09/17 communication arz tester Rohde&schw MTI-E004 EMI Test Receiver ESPI 1000314 2017/09/18 2018/09/17 arz Broadband VULB916 MTI-E006 schwarabeck 872 2017/09/18 2018/09/17 antenna 3 BBHA912 MTI-E007 Horn antenna schwarabeck 1201 2017/09/18 2018/09/17 0D MTI-E014 amplifier America 8447D 3113A06150 2017/09/18 2018/09/17 Conduction 126A1343/20 MTI-E015 Immunity Signal Schloder CDG6000 2017/09/18 2018/09/17 15 Generator Coupled CDA A2210332/20 MTI-E016 decoupling Schloder 2017/09/18 2018/09/17 M2/M3 15 network Comprehensive Rohde&schw MTI-E032 CMW500 124192 2017/09/13 2018/09/12 test instrument arz MTI-E034 amplifier Agilent 8449B 3008A02400 2017/08/22 2018/08/21 Spectrum MTI-E040 Agilent N9020A MY49100060 2017/09/05 2018/09/04 analyzer MTI-E041 Signal generator Agilent N5182A MY49060455 2017/09/23 2018/09/22 Analog signal MTI-E042 Agilent E4421B GB40051240 2017/09/23 2018/09/22 generator Dare RPR3006 16I00054SN MTI-E043 Power probe 2017/09/29 2018/09/28 Instruments W O16 MTI-E047 10dB attenuator Mini-Circuits UNAT-10+ 15542 2017/09/24 2018/09/23 spectrum Rohde&schw MTI-E049 FSP-38 100019 2017/09/18 2018/09/17 analyzer arz PSG Signal MTI-E050 Agilent E8257D MY46520873 2017/09/24 2018/09/23 generator Active Loop FMZB MTI-E051 Antenna 9kHz - Schwarzbeek 00044 201709/26 2018/09/25 1519 B 30MHz Chengdu 18-40GHz ZLNA-18- MTI-E052 step Micro 1608001 2017/09/18 2018/09/17 amplifier 40G-21 Technology BBHA917 BBHA91705 MTI-E053 15-40G Antenna Schwarzbeek 2017/09/18 2018/09/17 0 82 Note: the calibration interval of the above test instruments is 12 months and the calibrations are traceable to international system unit (SI). Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 8 of 26 - Report No.: MTi180503E010 5 Test Result 5.1 Antenna requirement 5.1.1 Standard requirement FCC PART 15.203 and 15.247(b); An intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. The use of a permanently attached antenna or of an antenna that uses a unique coupling to the intentional radiator shall be considered sufficient to comply with the provisions of this section. The manufacturer may design the unit so that a broken antenna can be replaced by the user, but the use of a standard antenna jack or electrical connector is prohibited. This requirement does not apply to carrier current devices or to devices operated under the provisions of §§15.211, 15.213, 15.217, 15.219, 15.221, or §15.236. Further, this requirement does not apply to intentional radiators that must be professionally installed, such as perimeter protection systems and some field disturbance sensors, or to other intentional radiators which, in accordance with §15.31(d), must be measured at the installation site. However, the installer shall be responsible for ensuring that the proper antenna is employed so that the limits in this part are not exceeded. 5.1.2 EUT Antenna The antenna is an Helical antenna, which was permanently affixed to the device and un-replaced, complies with 15.203. In addition, the maximum antenna gain is 2dBi. Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 9 of 26 - Report No.: MTi180503E010 5.2 AC power line conducted emission 5.2.1 Limits FCC §15.207; For an intentional radiator that is designed to be connected to the public utility (AC) power line, the radio frequency voltage that is conducted back onto the AC power line on any frequency within the band 150 kHz to 30 MHz shall not exceed the limits in the following table, as measured using a 50µH/50Ω line impedance stabilization network (LISN). Frequency (MHz) Quasi-peak Average 0.15 -0.5 66 - 56 note2 56 - 46 note2 0.50 -5.0 56.00 46.00 5.0 -30.0 60.00 50.00 Note1: The tighter limit applies at the band edges. Note2: The limit of " * " marked band means the limitation decreases linearly with the logarithm of the frequency in the range. 5.2.2 Test setup Vertical Reference Ground Plane Test Receiver EUT 40cm 80cm LISN Horizontal Reference Ground Plane Note: 1.Support units were connected to second LISN. 2.Both of LISNs (AMN) are 80 cm from EUT and at least 80 cm from other units and other metal planes support. units. 5.2.3 Test procedure a. EUT Operating Conditions The EUT was configured for testing in a typical fashion (as a customer would normally use it). The EUT has been programmed to continuously transmit during test. This operating condition was tested and used to collect the included data. b. The following table is the setting of the receiver Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 10 of 26 - Report No.: MTi180503E010 Receiver Parameters Setting Attenuation 10 dB Start Frequency 0.15 MHz Stop Frequency 30 MHz IF Bandwidth 9 kHz c. The EUT was placed 0.8 meters from the horizontal ground plane with EUT being connected to the power mains through a line impedance stabilization network (LISN). All other support equipments powered from additional LISN(s). The LISN provide 50 Ohm/ 50uH of coupling impedance for the measuring instrument. d. Interconnecting cables that hang closer than 40 cm to the ground plane shall be folded back and forth in the center forming a bundle 30 to 40 cm long. e. I/O cables that are not connected to a peripheral shall be bundled in the center. The end of the cable may be terminated, if required, using the correct terminating impedance. The overall length shall not exceed 1 m. f. LISN at least 80 cm from nearest part of EUT chassis. For the actual test configuration, please refer to the related Item –EUT Test Photos. Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 11 of 26 - Report No.: MTi180503E010 5.2.4 Test results MICROPHONE WIRELESS EUT： Model Name. ： U3 SYSTEM Temperature： 26 ℃ Relative Humidity： 54% Pressure： 1010hPa Phase : L DC 5V from AC adapter Test Voltage ： Test Mode： TX 120V/60Hz Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 12 of 26 - Report No.: MTi180503E010 MICROPHONE WIRELESS EUT： Model Name. ： U3 SYSTEM Temperature： 26 ℃ Relative Humidity： 54% Pressure： 1010hPa Phase : N DC 5V from AC adapter Test Voltage ： Test Mode： TX 120V/60Hz Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 13 of 26 - Report No.: MTi180503E010 5.3 Field strength of fundamental and harmonic emissions 5.3.1 Limits FCC §15.249(a); The field strength of fundamental and harmonic emissions, measured at 3 m, shall not exceed 50 mV/m and 0.5 mV/m respectively. The field strength limits shall be measured using an average detector, except for the fundamental emission in the frequency band 902-928 MHz, which is based on measurements using an International Special Committee on Radio Interference (CISPR) quasi-peak detector Frequency Field Strength(dBuv/m) Detector Fundamental 114 PK Fundamental 94 AV Harmonic emissions 74 PK Harmonic emissions 54 AV 5.3.2 Test Method 1. The EUT is placed on a turntable, which is 0.8m above ground plane for test frequency range blew 1GHz, and 1.5m above ground plane for test frequency range above 1GHz. 2. EUT is set 3m away from the receiving antenna, which is varied from 1m to 4m to find out the highest emissions. 3. Use the following spectrum analyzer settings: Span = wide enough to fully capture the emission being measured, RBW = 1 MHz for f ≥ 1GHz, 100 kHz for f < 1 GHz, VBW ≥ RBW, Sweep = auto, Detector function = peak, Trace = max hold 4. Follow the guidelines in ANSI C63.4-2014 with respect to maximizing the emission by rotating the EUT, adjusting the measurement antenna height and polarization, etc. The peak reading of the emission, after being corrected by the antenna factor, cable loss, pre-amp gain, etc., is the peak field strength, submit this data. Each emission was to be maximized by changing the polarization of receiving antenna both horizontal and vertical. 5. The peak level, once corrected, must comply with the limit specified in Section 15.209. Set the RBW = 1MHz, VBW = 10Hz, Detector = PK for AV value, while maintaining all of the other instrument settings. Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 14 of 26 - Report No.: MTi180503E010 5.3.3 Test Result Transmitter channel: 2402MHz Ant. Frequency Emission level Limits Polarization Detector (MHz) H/V dBμV/m dBμV/m 2402 V 78.83 114 PK Result 2402 H 76.44 114 PK 2402 V 62.62 94 AV 2402 H 60.74 94 AV 4804 V 40.86 74 PK 4804 H 43.44 74 PK Transmitter channel: 2448MHz Ant. Frequency Emission level Limits Polarization Detector (MHz) H/V dBμV/m dBμV/m 2448 V 77.54 114 PK Result 2448 H 76.34 114 PK 2448 V 61.52 94 AV 2448 H 60.39 94 AV 4896 V 38.96 74 PK 4896 H 41.73 74 PK Transmitter channel: 2482MHz Ant. Frequency Emission level Limits Polarization Detector (MHz) H/V dBμV/m dBμV/m 2482 V 78.17 114 PK Result 2482 H 75.78 114 PK 2482 V 62.32 94 AV 2482 H 59.34 94 AV 4964 V 40.09 74 PK 4964 H 41.55 74 PK Note: If the PK measured values lower than average mode limit, the EUT shall be deemed to meet average limits and then no additional average mode measurement performed. Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 15 of 26 - Report No.: MTi180503E010 5.4 20dB and 99% bandwidth 5.4.1 Limits FCC §15.215(c) Intentional radiators operating under the alternative provisions to the general emission limits, as contained in § 15.217 through 15.257 and in Subpart E of this part, must be designed to ensure that the 20 dB bandwidth of the emission, or whatever bandwidth may otherwise be specified in the specific rule section under which the equipment operates, is contained within the frequency band designated in the rule section under which the equipment is operated. 5.4.2 Test method Use the following spectrum analyzer settings: For 20 dB bandwidth Span = approximately 2 to 3 times the 20 dB bandwidth, centered on a hopping channel RBW ≥1% of the 20 dB bandwidth VBW ≥RBW Sweep = auto Detector function = peak Trace = max hold The EUT should be transmitting at its maximum data rate. Allow the trace to stabilize. Use the marker-to-peak function to set the marker to the peak of the emission. Use the marker-delta function to measure 20 dB down one side of the emission. Reset the marker-delta function, and move the marker to the other side of the emission, until it is (as close as possible to) even with the reference marker level. The marker-delta reading at this point is the 20 dB bandwidth and 99% occupied bandwidth of the emission Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 16 of 26 - Report No.: MTi180503E010 5.4.3 Test result Frequency (MHz) 20dB bandwidth (MHz) 2402 2.536 2448 2.125 2482 2.337 Test plots 2402MHz 2448MHz Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 17 of 26 - Report No.: MTi180503E010 2482MHz Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 18 of 26 - Report No.: MTi180503E010 5.5 Radiated spurious emission 5.5.1 Limit FCC PART 15.249(a); Except as provided in paragraph (a) of this section, the field strength of emissions from intentional radiators operated within these frequency bands shall comply with the following: Field Strength of Field Strength of Harmonics Frequency (MHz) Fundamental (mV/m) (µV/m) 902-928 50 500 2400-2483.5 50 500 5725-5875 50 500 Emissions radiated outside of the specified frequency bands, except for harmonics, shall be attenuated by at least 50 dB below the level of the fundamental or to the general radiated emission limits in §15.209, whichever is the lesser attenuation. According to FCC section 15.209 (a), except as provided elsewhere in this subpart, the emissions from an intentional radiator shall not exceed the field strength levels specified in the following table: Frequency (MHz) Field Strength (µV/m) Measurement Distance (m) 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 Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 19 of 26 - Report No.: MTi180503E010 5.5.2 Test method a) The EUT is placed on a turntable, which is 0.8m above ground plane for test frequency range blew 1GHz, and 1.5m above ground plane for test frequency range above 1GHz. b) EUT is set 3m away from the receiving antenna, which is varied from 1m to 4m to find out the highest emissions. c) Use the following spectrum analyzer settings: 1) Span = wide enough to fully capture the emission being measured 2) RBW = 1 MHz for f ≥ 1GHz, 100 kHz for f < 1 GHz 3) VBW ≥ RBW, Sweep = auto 4) Detector function = peak 5) Trace = max hold d) Follow the guidelines in ANSI C63.4-2014 with respect to maximizing the emission by rotating the EUT, adjusting the measurement antenna height and polarization, etc. The peak reading of the emission, after being corrected by the antenna factor, cable loss, pre-amp gain, etc., is the peak field strength, submit this data. Each emission was to be maximized by changing the polarization of receiving antenna both horizontal and vertical. e) The peak level, once corrected, must comply with the limit specified in Section 15.209. Set the RBW = 1MHz, VBW = 10Hz, Detector = PK for AV value, while maintaining all of the other instrument settings. Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 20 of 26 - Report No.: MTi180503E010 5.5.3 Test Result Note: If the PK measured values lower than average mode limit, the EUT shall be deemed to meet average limits and then no additional average mode measurement performed. Below 30MHz MICROPHONE EUT： WIRELESS Model Name. ： U3 SYSTEM Temperature： 20 ℃ Relative Humidtity： 48% DC 5V from AC adapter Pressure： 1010 hPa Test Voltage： 120V/60Hz Test Mode： TX Polarization : -- Freq. Reading Limit Margin State (MHz) (dBuV/m) (dBuV/m) (dB) P/F -- -- -- -- Pass -- -- -- -- Pass Note: The amplitude of spurious emissions which are attenuated by more than 20dB below the permissible value has no need to be reported. Distance extrapolation factor =40 log (specific distance/test distance)(dB); Limit line = specific limits(dBuV) + distance extrapolation factor. Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 21 of 26 - Report No.: MTi180503E010 Radiation (30MHz – 1GHz) MICROPHONE WIRELESS EUT： Model Name. ： U3 SYSTEM Temperature： 26 ℃ Relative Humidity： 54% Pressure： 1010hPa Polarziation: H DC 5V from AC adapter Test Voltage ： Test Mode： Normal work 120V/60Hz Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 22 of 26 - Report No.: MTi180503E010 MICROPHONE WIRELESS EUT： Model Name. ： U3 SYSTEM Temperature： 26 ℃ Relative Humidity： 54% Pressure： 1010hPa Polarziation: V DC 5V from AC adapter Test Voltage ： Test Mode： Normal work 120V/60Hz Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 23 of 26 - Report No.: MTi180503E010 Above 1GHz: Low Channel (2402 MHz) Meter Emission Polar Frequency Factor Limits Margin Detector Reading Level (H/V) Type (MHz) (dBuV) (dB) (dBuV/m) (dBuV/m) (dB) H 4332 43.65 -4.49 39.16 74 -34.84 Peak H 7120 40.49 -2.84 37.65 74 -36.35 Peak H 8361 42.8 -1.94 40.86 74 -33.14 Peak H 10673 38.17 2.28 40.45 74 -33.55 Peak H 13682 35.74 5.17 40.91 74 -33.09 Peak H 14277 37.81 5.57 43.38 74 -30.62 Peak Meter Emission Polar Frequency Factor Limits Margin Detector Reading Level (H/V) Type (MHz) (dBuV) (dB) (dBuV/m) (dBuV/m) (dB) V 2955 49.34 -6.96 42.38 74 -31.62 Peak V 4808 50.34 -8.93 41.41 74 -32.59 Peak V 8038 42.79 -3.6 39.19 74 -34.81 Peak V 10010 40.92 -0.21 40.71 74 -33.29 Peak V 11948 41.48 0.26 41.74 74 -32.26 Peak V 14294 38.04 5.4 43.44 74 -30.56 Peak Mid Channel (2448 MHz) Meter Emission Detector Polar Frequency Factor Limits Margin Type (H/V) Reading Level (MHz) (dBuV) (dB) (dBuV/m) (dBuV/m) (dB) H 4893 52.27 -7.67 44.6 74 -29.4 Peak H 7885 41.55 -2.06 39.49 74 -34.51 Peak H 9993 37.87 1.87 39.74 74 -34.26 Peak H 11931 38.56 2.46 41.02 74 -32.98 Peak H 13869 36.13 5.81 41.94 74 -32.06 Peak H 14328 38.65 5.44 44.09 74 -29.91 Peak Meter Emission Detector Polar Frequency Factor Limits Margin Type (H/V) Reading Level (MHz) (dBuV) (dB) (dBuV/m) (dBuV/m) (dB) V 4893 51.45 -9.39 42.06 74 -31.94 Peak V 7902 43.21 -3.78 39.43 74 -34.57 Peak V 9772 42.01 -0.71 41.3 74 -32.7 Peak V 10571 40.59 0.23 40.82 74 -33.18 Peak V 11591 40.05 0.37 40.42 74 -33.58 Peak V 14073 37.79 5.75 43.54 74 -30.46 Peak Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 24 of 26 - Report No.: MTi180503E010 High Channel (2482 MHz) Polar Meter Emission Detector (H/V) Frequency Factor Limits Margin Type Reading Level (MHz) (dBuV) (dB) (dBuV/m) (dBuV/m) (dB) H 4978 53.91 -8.16 45.75 74 -28.25 Peak H 6321 42.1 -4.89 37.21 74 -36.79 Peak H 7443 47.95 -2.74 45.21 74 -28.79 Peak H 9755 39.54 1.14 40.68 74 -33.32 Peak H 12152 38.93 2.61 41.54 74 -32.46 Peak H 14209 37.76 5.74 43.5 74 -30.5 Peak Meter Emission Detector Polar Frequency Factor Limits Margin Type (H/V) Reading Level (MHz) (dBuV) (dB) (dBuV/m) (dBuV/m) (dB) V 4978 58.48 -9.86 48.62 74 -25.38 Peak V 7103 42.73 -4.68 38.05 74 -35.95 Peak V 8055 43.72 -3.58 40.14 74 -33.86 Peak V 11387 40.15 0.37 40.52 74 -33.48 Peak V 12696 39.91 1.16 41.07 74 -32.93 Peak V 13903 37.67 5.4 43.07 74 -30.93 Peak Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 25 of 26 - Report No.: MTi180503E010 Photographs of the Test Setup Radiated emission – below 1GHz Radiated emission – above 1GHz Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China

- Page 26 of 26 - Report No.: MTi180503E010 Conducted emission ----END OF REPORT---- Tel:(86-755)88850135 Fax: (86-755) 88850136 Web: http://www.mtitest.com E-mail: mti@51mti.com Address: No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China


Document Created: 2018-05-29 07:27:29
Document Modified: 2018-05-29 07:27:29
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