2ADKJ-DWAM83wireless audio module

DWAM83 Wireless audio module Technical Product Specification 1 DWAM83 Rev1.0 ( 08-18-1 1) Order Number (s): DWAM83 MODULE (DARR83 based module with on board antennas opera ting in 2.4GHz/5.2GHz/5.8GHzbands) Th is product meets the halogen maximum concentration values per IEC6 1249-2-21 Fo r RoHS compli ance and environmental information, please visit www.smsc.com/rohs 80 ARKAY DRIVE, HAUP PA UGE, NY 11788 (631) 435-6000, FAX (631) 2 73- 3123 Copyright © 2011 SMSC or its subsidiar ies. All rights reserved. Circui t diagrams and other informatio n relating to SMSC products are included as a means of illustrati ng typical a pplicati ons. Consequently, complete information sufficient f or construction purposes is not necessarily given. Although the information has been check ed and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to specificatio ns and product descr ipt ions at any time without notice. Contact y our local SMSC sales off ice to obtain the latest sp ecif ic ati ons before placi ng your product order. The provision of this information does n ot convey to the purchaser of the described semiconductor devices any licenses under any patent rights or o ther intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC's s tandard Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors known as anomalies which may cause t he product's functions to deviate from published specificatio ns. A nomaly sheets are available upon request. SMSC products are not designed, i ntended, authorized or warr anted for use in any life support or other application where product f ailure could cause or c ontribute to personal injury or s evere property damage. Any and all such uses w ithout prior written approval of an Officer of SMSC and further testing and/or modification w ill be ful ly at t he risk of t he customer. Copies of this document or o ther SMSC literatur e, as well as t he Terms of Sale Agreement, may be obtained by visiting SMSC’s website at ht tp:// www.smsc.com. SMSC is a registered trademark of Standard Microsy stems Corporati on (“SMSC”). Product names a nd company names are the tr ademarks of t heir respective holders. 2 DWAM83 Rev1.0 ( 08-18-1 1) Ta ble of Contents 1.DWAM83 MODULE............ ...................................................................................................................... 4 1. 1. P RODUCT D ESCRIPTION . .................................................................................................................... 4 1. 2. B ASIC F EATURES ....... ........................................................................................................................ 5 1. 2.1. High Quality Audio.............................. ..................................................................................... 5 1. 2.2. Networking and Connectivity ................................... ................................................................ 5 1. 2.3. Coexistence and Rob ust ness.................................................................................................. 5 1. 2.4. Power Mana gement ................................................................................................................ 5 1. 2.5. Integra ted 8052 M CU ......................... ..................................................................................... 5 1. 2.6. Digital Audio Clock Synchronization ............................. .......................................................... 5 1. 2.7. Sample Rate Converter (SRC) + Sample Rate Detect o r ........................ ................................ 6 1. 2.8. K leerNet................................................................................................................................... 6 2.DWAM83 MODULE SPECIFICATIONS ........................ ........................................................................... 7 2. 1. A BSOLUTE M AXIMUM R ATING ................ ............................................................................................... 9 2. 2. R ECOMMENDED O PERATING C ONDITIONS .......................... ................................................................... 9 2. 3. DC C HARACTERISTICS ......... ............................................................................................................... 9 2.4. DWAM83 MODULE BLOCK DIAGRAM ........................................................................................... 10 2. 5. P OWER C ONSUMPTION ......... ............................................................................................................. 10 2. 6. RF P ERFORMANCE ................ ............................................................................................................ 12 2. 7. P IN OUT OF 26 PIN F FC I NTERFACE C ONNECT OR ...... .......................................................................... 13 2. 8. A NTENNA ........ .................................................................................................................................. 14 3.HARDWARE DEVELOPMENT ............................ ................................................................................... 15 3. 1. M ODULE P LACEMENT ....... ................................................................................................................. 15 3. 1.1. Potential Antenna Issues.... .................................................................................................... 15 3. 2. G ENERAL P OWER S UPPLY D ECOUPLING ......... ................................................................................... 16 3. 3. D IGITAL IO FILTERING ........................................................................…

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Dalian Golden Hualu Digital Technology Co.,Ltd. No.1, Hua Road, High-Tech Zone, Dalian, 116023 China [Nov. 4, 2019] Federal Communications Commission 445 12 th Street SW Washington, DC 20554 Subject: Limited Agency Agreement Dalian Golden Hualu Digital Technology Co.,Ltd. FCC ID: 2ADKJ-DWAM83 To Whom It May Concern: We, Dalian Golden Hualu Digital Technology Co.,Ltd. hereby authorized Intertek Testing Services to act as our Agent for the purpose of preparing application for FCC ID number (2ADKJ-DWAM83) under all applicable parts of the FCC rules and regulations. The effective date of this limited agency agreement is (2019-11-04). The Limited Agency Agreement expires until further notice, unless sooner terminated or extended by written notice to Intertek Testing Services and the Federal Communications Commission. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. The applicant is not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 U.S.C. 862, and no party to the application is subject to a denial of federal benefits pursuant to that section. If you have any questions or comments, please do not hesitate to contact me. Sincerely, [Signature] Dalian Golden Hualu Digital Technology Co.,Ltd. Contact person: Yongjin Che Title: Project Manager

Dalian Golden Hualu Digital Technology Co.,Ltd. No.1, Hua Road, High-Tech Zone, Dalian, 116023 China RE FCC ID: 2ADKJ-DWAM83 To the certification reviewer: We are hereby applying for [full] modular approval of the above-referenced FCC ID, based on compliance with [all] of the criteria as detailed below. Sincerely, [Yongjin Che] [Project Manager] Part 15 Unlicensed Single Modular Transmitter Approval Justification per 15.212 Requirement per 15.212 reference (i) The radio elements of the modular transmitter must have their own RF shielding. Shielding is provided by a metal cover over the circuitry. (ii) The modular transmitter must have buffered modulation/data inputs (if such inputs are provided. All modulation and data inputs are buffered by circuitry on the transmitter chip. (iii) The modular transmitter must have its own power supply regulation. Power supply regulation is provided by circuitry on the transmitter chip. (iv) The modular transmitter must comply with the antenna and transmission system requirements of §§ 15.203, 15.204(b) and 15.204(c). The antenna is fixed. (v) The modular transmitter must be tested in a stand-alone configuration, i.e., the module must not be inside another device during testing for compliance with Part 15 parameters. Testing was performed in a stand-alone configuration as shown in the test setup photos. (vi) The modular transmitter must be equipped with either a permanently affixed label or must be capable of electronically displaying its FCC identification number. If the FCC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. The modular was labeled with its own FCC ID. The outside of device in to which the module is installed will labeled Contains TX FCC ID: 2ADKJ- DWAM83, Please refer to User Manual. Dalian Golden Hualu Digital Technology Co.,Ltd. No.1, Hua Road, High-Tech Zone, Dalian, 116023 China (vii) The modular transmitter must comply with any specific rules or operating requirements that ordinarily apply to a complete transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. A copy of these instructions must be included in the application for equipment authorization. The modular is comply with all applicable FCC rules. Any modifications, not expressly approved by the manufacturer could void the authority to operate in these regions. (viii) The modular transmitter must comply with any applicable RF exposure requirements in its final configuration. This module operates under Part 15 .247 which is exempt from RF exposure evaluation owing to the very low operating power.

External Photos Test Model: DWAM83 TOP VIEW OF EUT BOTTOM VIEW OF EUT 5G Antenna 2 5G Antenna 1 2.4G Antenna 2 2.4G Antenna 1 FRONT VIEW OF EUT BACK VIEW OF EUT LEFT VIEW OF EUT RIGHT VIEW OF EUT

FCC ID and IC Label Location 15mm*5mm FCC ID: 2ADKJ-DWAM83 IC: 12493A-DWAM83 HVIN: DWAM83

Internal Photos Test Model: DWAM83 OPEN VIEW OF EUT INTERNAL VIEW OF EUT TOP VIEW OF EUT BOTTOM VIEW OF EUT FRONT VIEW OF EUT BACK VIEW OF EUT LEFT VIEW OF EUT RIGHT VIEW OF EUT OPEN VIEW OF EUT INTERNAL VIEW OF EUT

RF EXPOSURE EVALUATION 1. PRODUCT INFORMATION Product Description wireless audio module Model Name DWAM83 FCC ID 2ADKJ-DWAM83 2. EVALUATION METHOD AND LIMIT Human exposure to RF emissions from mobile devices (47 CFR §2.1091) may be evaluated based on the MPE limits adopted by the FCC for electric and magnetic field strength and/or power density, as appropriate, since exposures are assumed to occur at distances of 20 cm or more from persons. LIMITS FOR GENERAL POPULATION / UNCONTROLLED EXPOSURE Frequency Range (MHz) E-field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Time |E| 2 , |H| 2 or S (Minutes) 0.3 -- 1.34 614 1.63 (100)* 30 1.34 -- 30 824/f 2.19/f (180/f 2 )* 30 30 -- 300 27.5 0.073 0.2 30 300 -- 1500 -- -- f/1500 30 1500 -- 100,000 -- -- 1.0 30 *Note: 1. f= Frequency in MHz * Plane-wave Equivalent Power Density 2. The averaging time for General Population/Uncontrolled exposure to fixed transmitters is not applicable for mobile and portable transmitters. See 47 CFR §§2.1091 and 2.1093 on source-based time-averaging requirement for mobile and portable transmitters. S=PG/4πR² Where: S=power density P=power input to antenna G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna 3. CALCULATION A minimum test separation distance ≥ 20 cm is required between the antenna and radiating structures of the device and nearby persons to apply mobile device exposure limits. The distance must be at least 20 cm and fully supported by the operating and installation configurations of the transmitter and its antenna(s), according to the source-based time-averaged maximum power requirements of § 2.1091(d)(2). In cases where cable losses or other attenuations are applied to determine compliance, the most conservative operating configurations and exposure conditions must be evaluated. Antenna Gain=2dBi (Numeric 1.58), π=3.14 Antenna Gain=3dBi (Numeric 2), π=3.14 Note: Only the worst case recorded. Frequency Output Power Output Power Power Density Power Density Limit MHz dBm mW mW/cm 2 mW/cm 2 2412 10.65 11.61 0.004 1 Frequency Output Power Output Power Power Density Power Density Limit MHz dBm mW mW/cm 2 mW/cm 2 5180 7.66 5.83 0.002 1

Page 1 of 65 Report No.: AGC09241191001FE06 FCC ID : 2ADKJ-DWAM83 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : wireless audio module BRAND NAME : N/A MODEL NAME : DWAM83 APPLICANT : Dalian Golden Hualu Digital Technology Co., Ltd. DATE OF ISSUE : Nov. 02, 2019 STANDARD(S) TEST PROCEDURE(S) : FCC Part 15.407 KDB 789033 D02 v02r01 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd CAUTION: This report shall not be reproduced except in full without the written permission of the test laboratory and shall not be quoted out of context. FCC Test Report Report No.: AGC09241191001FE06 Page 2 of 65 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / Nov. 02, 2019 Valid Initial Release Report No.: AGC09241191001FE06 Page 3 of 65 TABLE OF CONTENTS 1. VERIFICATION OF CONFORMITY ..............................................................................................................5 2. GENERAL INFORMATION ..........................................................................................................................6 2.1. PRODUCT DESCRIPTION ....................................................................................................................6 2.2. TABLE OF CARRIER FREQUENCYS ....................................................................................................6 2.3. RELATED SUBMITTAL(S) / GRANT (S) .................................................................................................7 2.4. TEST METHODOLOGY .........................................................................................................................7 2.5. SPECIAL ACCESSORIES .....................................................................................................................7 2.6. EQUIPMENT MODIFICATIONS .............................................................................................................7 3. MEASUREMENT UNCERTAINTY ...............................................................................................................8 4. DESCRIPTION OF TEST MODES ...............................................................................................................9 5. SYSTEM TEST CONFIGURATION ............................................................................................................ 10 5.1. CONFIGURATION OF EUT SYSTEM .................................................................................................. 10 5.2. EQUIPMENT USED IN EUT SYSTEM ................................................................................................. 10 5.3. SUMMARY OF TEST RESULTS .......................................................................................................... 10 6. TEST FACILITY ......................................................................................................................................... 11 7. MAXIMUM CONDUCTED OUTPUT POWER ............................................................................................. 12 7.1. MEASUREMENT PROCEDURE.......................................................................................................... 12 7.2. TEST SET-UP ...................................................................................................................................... 12 7.3. LIMITS AND MEASUREMENT RESULT .............................................................................................. 13 8. 6DB BANDWIDTH ..................................................................................................................................... 14 8.1. MEASUREMENT PROCEDURE.......................................................................................................... 14 8.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................. 14 8.3. LIMITS AND MEASUREMENT RESULTS ............................................................................................ 15 9. EMISSION BANDWIDTH ........................................................................................................................... 18 9.1. MEASUREMENT PROCEDURE.......................................................................................................... 18 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................. 18 9.3. LIMITS AND MEASUREMENT RESULTS ............................................................................................ 19 10. MAXIMUM CONDUCTED OUTPUT PEAK POWER SPECTRAL DENSITY ............................................ 22 10.1 MEASUREMENT PROCEDURE......................................................................................................... 22 10.2 TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................. 22 10.3 MEASUREMENT EQUIPMENT USED ................................................................................................ 22 Report No.: AGC09241191001FE06 Page 4 of 65 10.4 LIMITS AND MEASUREMENT RESULT ............................................................................................. 22 11. CONDUCTED SPURIOUS EMISSION ..................................................................................................... 29 11.1. MEASUREMENT PROCEDURE ........................................................................................................ 29 11.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................ 29 11.3. MEASUREMENT EQUIPMENT USED ............................................................................................... 29 11.4. LIMITS AND MEASUREMENT RESULT ............................................................................................. 29 12. RADIATED EMISSION ..........................................................................…

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Report No.: AGC09241191001FE06 Page 36 of 65 TEST PLOT OF OUT OF BAND EMISSIONS FOR MODULATION IN 5814MHz Report No.: AGC09241191001FE06 Page 37 of 65 Note: Two transmit chains had been tested, the chain 1 was the worst case and record in the test report. Report No.: AGC09241191001FE06 Page 38 of 65 12. RADIATED EMISSION 12.1. MEASUREMENT PROCEDURE 1. The EUT was placed on the top of the turntable 0.8 or 1.5 meter above ground. The phase center of the receiving antenna mounted on the top of a height-variable antenna tower was placed 3 meters far away from the turntable. 2. Power on the EUT and all the supporting units. The turntable was rotated by 360 degrees to determine the position of the highest radiation. 3. The height of the broadband receiving antenna was varied between one meter and four meters above ground to find the maximum emissions field strength of both horizontal and vertical polarization. 4. For each suspected emissions, the antenna tower was scan (from 1 M to 4 M) and then the turntable was rotated (from 0 degree to 360 degrees) to find the maximum reading. 5. Set the test-receiver system to Peak or CISPR quasi-peak Detect Function with specified bandwidth under Maximum Hold Mode. 6. For emissions above 1GHz, use 1MHz RBW and 3M VBW for peak reading. Place the measurement antenna away from each area of the EUT determined to be a source of emissions at the specified measurement distance, while keeping the measurement antenna aimed at the source of emissions at each frequency of significant emissions, with polarization oriented for maximum response. The measurement antenna may have to be higher or lower than the EUT, depending on the radiation pattern of the emission and staying aimed at the emission source for receiving the maximum signal. The final measurement antenna elevation shall be that which maximizes the emissions. The measurement antenna elevation for maximum emissions shall be restricted to a range of heights of from 1 m to 4 m above the ground or reference ground plane. 7. When the radiated emissions limits are expressed in terms of the average value of the emissions, and pulsed operation is employed, the measurement field strength shall be determined by averaging over one complete pulse train, including blanking intervals, as long as the pulse train does not exceed 0.1 seconds. As an alternative (provided the transmitter operates for longer than 0.1 seconds) or in cases where the pulse train exceeds 0.1 seconds, the measured field strength shall be determined from the average absolute voltage during a 0.1 second interval during which the field strength is at its maximum values. 8.If the emissions level of the EUT in peak mode was 3 dB lower than the average limit specified, then testing will be stopped and peak values of EUT will be reported, otherwise, the emissions which do not have 3 dB margin will be repeated one by one using the quasi-peak method for below 1GHz. 9. For testing above 1GHz, the emissions level of the EUT in peak mode was lower than average limit (that means the emissions level in peak mode also complies with the limit in average mode), then testing will be stopped and peak values of EUT will be reported, otherwise, the emissions will be measured in average mode again and reported. 10. In case the emission is lower than 30MHz, loop antenna has to be used for measurement and the recorded data should be QP measured by receiver. High - Low scan is not required in this case. Report No.: AGC09241191001FE06 Page 39 of 65 12.2. TEST SETUP Radiated Emission Test-Setup Frequency Below 30MHz RADIATED EMISSION TEST SETUP 30MHz-1000MHz RADIATED EMISSION TEST SETUP ABOVE 1000MHz Report No.: AGC09241191001FE06 Page 40 of 65 12.3. LIMITS AND MEASUREMENT RESULT 15.209(a) Limit in the below table has to be followed Frequencies (MHz) Field Strength (micorvolts/meter) Measurement Distance (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 Note: All modes were tested For restricted band radiated emission, the test records reported below are the worst result compared to other modes. 12.4. TEST RESULT RADIATED EMISSION BELOW 30MHZ No emission found between lowest internal used/generated frequencies to 30MHz. Report No.: AGC09241191001FE06 Page 41 of 65 RADIATED EMISSION BELOW 1GHZ EUT wireless audio module Model Name DWAM83 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 5180MHz Antenna Horizontal RESULT: PASS Report No.: AGC09241191001FE06 Page 42 of 65 EUT wireless audio module Model Name DWAM83 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 5180MHz Antenna Vertical RESULT: PASS Note: All test channels had been tested. The 5180MHz is the worst case and recorded in the test report. Factor = Antenna Factor + Cable loss - Amplifier gain, Margin= Limit-Level. The “Factor” value can be calculated automatically by software of measurement system. Report No.: AGC09241191001FE06 Page 43 of 65 RADIATED EMISSION ABOVE 1GHZ EUT wireless audio module Model Name DWAM83 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 5180MHz Antenna Horizontal/Vertical RADIATED EMISSION ABOVE 1GHZ–Horizontal FrequencyMeter ReadingFactor Emission LevelLimitsMargin (MHz)(dBμV) (dB)(dBμV/m)(dBμV/m)(dB) 10360.0629.1451.01 74.00 -22.99 peak 10360.0629.1447.05 54.00 -6.95 AVG 15540.09310.2245.63 74.00 -28.37 peak 15540.09310.2241.00 54.00 -13.00 AVG Value Type 41.87 37.91 35.41 30.78 Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. RADIATED EMISSION ABOVE 1GHZ–Vertical FrequencyMeter ReadingFactor Emission LevelLimitsMargin (MHz)(dBμV) (dB)(dBμV/m)(dBμV/m)(dB) 10360.0629.1455.07 74.00 -18.93 peak 10360.0629.1447.61 54.00 -6.39 AVG 15540.09310.2246.05 74.00 -27.95 peak 15540.09310.2243.47 54.00 -10.53 AVG Value Type 45.93 38.47 35.83 33.25 Remark: Factor = Antenn…

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Test Setup Photos Test Model: DWAM83 FCC LINE CONDUCTED EMISSION TEST SETUP FCC RADIATED EMISSION TEST SETUP BELOW 1GHZ FCC RADIATED EMISSION TEST SETUP ABOVE 1GHZ