TRD320178WIRELESS MICROPHONE

EUT Model Name: WM-369 View of EUT

EUT Model Name: WM-369 Top View of PCBAs EUT Model Name: WM-369 Bottom View of PCBAs

Operation description for Microphone 1. The power supply voltage select switch locates on the back panel. The voltage has been made sure be the same as the purpose area’ energy supply voltage before transportation. Please check the switch before energizing whether it is being operated right. If the voltages are not accordant or when you are in a different energy supply voltage area, please adjust the switch as following. 1). Remove the power supply cord. 2). Then get a middle-type screwdriver. 3). Adjusting the switch with the screwdriver until the arrow of the switch point to the same voltage as the area’s. 2. adjust the receiver’s volume to the minimum level, connect the speaker’s MIC input receptacle with the sound signal wire and adjust the speaker’s volume to the minimum level. 3. Power on the receiver, adjust the volume to middle level. 4. Microphone batteries installation 1). Spin and open the lid, put in the batteries in accordance with the right position then close the lid. 2). Make sure the batteries’ polarity is correct. 5. Push the microphone’s switch to the ‘ON’ position, the signal lamp shine and you can enjoy the microphone. 6. adjust the microphone’s volume to the most comfortable level. 7. Keep away from sound box to avoid noise and echo.

Circuit Description of Transmitter The microphone use a circuit of 6F 22 9V to run the transmitter: Sound wave signal is transformed to electronic signal adapt to electronic component through a transducer, then loaded a high frequency vibration and a mixed frequency circuit then get a fixed frequency, high frequency amplifier amplify the high frequency vibration to a strong enough level, high frequency power amplifier and modulator amplify the high frequency vibration further, at the same time, load the sound signal to the electronic wave. The course is called modulation. Antennae radiate the strong enough high frequency signal that had loaded sound signal to air, so that the receivers can receive them.

Tune-up Procedure WM-369 Wireless Microphone (Transmitter) 1) Frequency Adjustment a) Connect the frequency counter to the L7, b) Make sure the crystal Y1 for the operating frequency. c) Adjust L9. d) Specification: TX frequency +/- 0.005% 2) TX Power Check. a) Connect the RF power meter to the L7. (RF impedance 50 ohm) b) Turn-on the transmitter. c) Check the TX power. d) Specification: TX power < 10 mW 3) Max. Frequency Deviation Adjustment. a) Connect the deviation meter to the L7, b) Apply the audio signal 400Hz, 30 mV to the Mic point. c) Adjust R30. d) Specification: Frequency deviation < 15 KHz

Material /Specification Used Unit Material /Specification Q uantit y Unit ceramic capacitor/1P/NPO 2 PCS jumper/10m m 1 PCS ceramic capacitor/2P/3P/NPO 1 PCS light emitting diode/2*5 1 PCS ceramic capacitor/ 8P/NPO 1 PCS color inductance /3.3 μ H 2 PCS ceramic capacitor/ 9P/10P 3 PCS IC/CSC31101 1 PCS ceramic capacitor/12P/15P 1 PCS capacitor/472 1 PCS ceramic capacitor/ 20P 1 PCS Varactor diodes/2638 1 PCS ceramic capacitor/33P/39P/NPO 2 PCS dynatron/ KSP10 1 PCS ceramic capacitor/ 43P/47P/NPO 2 PCS dynatron/ C9018 2 PCS ceramic capacitor/47P/NPO 2 PCS dynatron/ C9014 3 PCS ceramic capacitor/470P 1 PCS electrolytic capacitor /1 μ /50V 2 PCS ceramic capacitor/ 100P 1 PCS electrolytic capacitor 10 μ /25V 1 PCS ceram i c capac i tor / 103 5 PCS e l ectro l yt i c capac i tor /4 . 7 μ /50V 8 PCS PCB/LYM802-RF 1 PCS resistance 47 Ω 1/8 W 6 PCS windv inductance/ 3*5.5*0.6A 2 PCS resistance/1K 1/8W 3 PCS windv inductance/ 3*3.5*0.6A 2 PCS res i stance /2 . 2K 1/8W 1 PCS T/506864 1 PCS resistance/3K3 1/8W 1 PCS T/73 1 PCS resistance/5K6 1/8W 1 PCS T/74 1 PCS resistance/10K 1/8W 5 PCS T/30 1 PCS resistance/47K 1/8W 1 PCS Dcpiug 1 PCS resistance/ 56K 1/8W 2 PCS switch 1 PCS resistance/100K 1/8W 4 PCS b attery piece 1 PCS shuangyi electronics industrial CO.,LTD BOM VHF Transmitter board Model ： 369 Date :2005-1-8

12345678 A B C D 8 7654321 D C B A Title NumberRevisionSize A2 Date:3-Sep-2005 Sheet of File:F:\sy-PCB\shuangyi-pcb.DDBDrawn By: R13 47K C8 5P C16 10UF C6 2P R16 4K7 R5 150K R8 3K3 R27 10K R12 3K3 C23 4U7 C5 8P C11 103 Q9 9018 R7 220 R31 1k R6 330 R1 5K6 C13 103 C9 2P C2 10P R17 220 R30 100 C77 1000U/25V R3 10K R22 10K R2 1K R4 330 L6 0.68U C12 103 C4 0.5P L3 3UH3 12345678 16151413121110 9 IC1 2003 C29 4U7 C31 4U7 C28 4U7 10.7 Q7 9014 Q8 9014 L2 3T5 L1 3T5 C21 102J C10 103 C38 47P C17 103 C14 5P C15 15P R11 4K7 ANT1 C7 6P R19 820K R28 22K C3 3P C32 1U Q3 9014 Q1 H10 R23 33K R18 1K R14 220 R15 2K2 R10 2K2 C26 4U7 Q2 9014 R9 2K2 D4 LED C1 39 C25 4U7 2 1 3 T10.7 2 1 3 T10.7 VCC VCC C12 103 C24 100P VCC TX1 L5 3T5 L4 3T5 VR 20K C20 102J VCCVCC C18 102J C27 102J C78 103 C33 47P C36 103 C79 103 C19 103 C22 104 C75 103 C73 103 C76 103 VCC D1 4148 D2 4148 D3 4148 IC4 393 2 Q6 9014 Q5 9014 VR 203 Q4 9015 R29 22K R24 47K R25 10K R26 3K3 VCC VCC 1 R21 47K VCC R20 47K 3 R32 2K2 C24 103 8 VCC C39 10U R39 1K C34 4U7 R33 220 C40 4U7 R38 47K R40 22K C74 103 12345678 16151413121110 9 IC231101 C37 4U7 C41 4U7 C30 100U VCC C42 1U OUT OUT Vin 1 GND 2 Vout 3 7808 D5 4001 D6 4001 D7 4001 D8 4001 D9 LED AC12V AC12V Q12 9015 SW 47U C80 R35 10K Q10 9014 Q11 9014 R36 10K R37 10K R34 56K C35 103 R63 47K C51 5P C65 10UF C67 2P R61 4K7 R42 150K R65 3K3 R53 10K R70 3K3 C47 4U7 C68 8P C44 103 Q13 9018 R66 220 R45 1k R41 330 R67 5K6 C66 103 C52 2P C72 10P R60 220 R46 100 R69 10K R54 10K R68 1K R43 330 L6 0.68U C43 103 C69 0.5P L3 3UH3 12345678 161514131211109 IC32003 C57 4U7 10.7 Q16 9014 Q15 9014 L2 3T5 L1 3T5 C49 102J C45 103 C64 103 C62 5P C63 15P R71 4K7 ANT1C50 6P R58 820K R47 22K C71 3P Q19 9014 Q14 H10 R49 33K R59 1K R64 220 R62 2K2 R72 2K2 C55 4U7 Q18 9014 R44 2K2 D13 LED C70 39 C54 4U7 2 1 3 T10.7 2 1 3 T10.7 VCC C48 103 C46100P VCC TX1 L5 3T5 L4 3T5 VR 20K C53 102J VCCVCC C61 102J C56 102J C60 103 C58 104 VCC D10 4148 D11 4148 D12 4148 IC4 393 6 Q17 9014 Q21 9014 VR 203 Q20 9015 R48 22K R50 47K R51 10K R52 3K3 VCC VCC 7 R55 47K VCC R56 47K 5 R57 2K2 C59 103 8 VCC lym WM-369-VFD 1234 A B C D 4 321 D C B A Title NumberRevisionSize A4 Date:3-Sep-2005 Sheet of File:F:\sy-PCB\shuangyi-pcb.DDBDrawn By: R24 47K C18 8P C3 1UF C14 8P R11 47 R10 10K R456K R16 47 R15 100K C2 4U7 C13 103 C16 47P Q1 9018 R5 47 R12 47 R14 1K R25 5K6 C15 1P C17 1P C8102J R147 R7 3K3 C4 4U7 C9 10U R3 1K R95K6 R210K R8 1K L2 3UH3 C4 47P C7 47P T2 64 MIC1 L1 3UH3 12345678 16151413121110 9 IC2 31101 C6 1UF C5 4U7 C8 4U7 C10 4U7 SW3 ? T1 73 T3 30 D12638 TX2 ? LIANGYIMING Q2 9018 Q3 H10 L3 6T5 L4 3T5 L5 3T5 L6 6T5 VCC C20 39P C25 470P C21 15P C22 8P C24 3P C23 1P R23 47 C19 39P ANT1 C29 103 R6 56K R13 10K C11 200P C27 4U7 Q5 9014 Q4 9014 BATT1 9V SW4 ? R18 100K R19 100K R20 10K R17 10K R21 100K C28 4U7 Q6 9014 R22 2K2 D2 LED + vcc C12 103 C1 4U7 VCC VCC 1234 A B C D 4 321 D C B A Title NumberRevisionSize A4 Date:3-Sep-2005 Sheet of File:F:\sy-PCB\shuangyi-pcb.DDBDrawn By: R1 1K R4 4K7 R17 2k2 lym R2 10K R11 33K D3 4148 Q1 9014 R19 22K R15 4k7 R18 150K R10 10K R547K R7 100 C3 4U7 C37 4U7 D1 4001 R6 22K R3 15K 1234567 8 1413121110 9 IC1 324 1234567 8 1413121110 9 IC2 324 123456789 10111213 AC17V 35V100U C1 R8 100 AC2V AC2V R9 4K7 R12 22K R13 4K7 R14 47K 1 2 3 4 5 J1 CHA R22 20K 4u7 C2 R16 2k2 D3 4148 R20 4k7 Q3 9015 R21 2k2 R24 2k2 D3 4148 Q1 9014 R29 22K R20 4k7 R25 150K C3 4U7 C37 4U7 1 2 3 4 5 J1 CHA R27 20K 4u7 C2 R23 2k2 D3 4148 R28 4k7 Q3 9015 R26 2k2 Q19014 Q1 9014 (56K)(56K)

670 National Avenue, Mountain View, CA 94043 Tel. (650) 988-0900 Fax (650) 988-6647 www.ecmg-global.com EMC TEST REPORT On Product Name: Wireless Microphone Model Name: WM-369 Brand Name: Prepared for ENPING CITY SHUANGYI ELECTRONICS INDUSTRIAL CO., LTD. According to FCC CFR 47 Part 74H – Low Power Auxiliary Stations Test Report #: ENP-0509-1007-TCB Prepared by: Arcelia Maldonado QC Manager: Tony Wang Test Report Released By: October 20, 2005 ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ ⎯⎯⎯⎯ Tony Wang Date NVLAP Lab code: 200068-0 ISO/IEC 17025:1999, ISO 9002:1994 Test Location EMC Compliance Management Group is located at 670 National Ave., Mountain View, CA 94043, USA. Accreditation Bodies EMC Compliance Management Group is a fully accredited Test Laboratory for ITE, ISM, MIL-STD and Telecommunications Products. Accredited by the National Voluntary Laboratory Accreditation Program for the specific scope of accreditation under Lab Code # 200068-0. Table of Contents DISCLAIMER NOTICE____________________________________________________________ 1 REPRODUCTION CLAUSE _______________________________________________________ 1 OPINIONS AND INTERPRETATIONS______________________________________________ 1 STATEMENT OF MEASUREMENT UNCERTAINTY _________________________________ 1 ADMINISTRATIVE DATA ________________________________________________________ 2 EUT DESCRIPTION ______________________________________________________________ 2 TEST SUMMARY ________________________________________________________________ 3 TEST MODE JUSTIFICATION ____________________________________________________ 4 EUT EXERCISE SOFTWARE ______________________________________________________ 4 EQUIPMENT MODIFICATION ____________________________________________________ 4 TEST SYSTEM DETAILS _________________________________________________________ 5 CONFIGURATION OF TESTED SYSTEM __________________________________________ 6 EUT SAMPLE PHOTOS __________________________________________________________ 7 FCC CFR 47 PART 74H ASSESSMENT REPORT _________________________________ 10 ATTACHMENT A – RF OUTPUT POWER TEST RESULT___________________________ 11 ATTACHMENT B – EMISSIONS BANDWIDTH TEST RESULTS ___________________ 13 ATTACHMENT C – MODULATION CHARACTERISTICS MEASUREMENT RESULTS _ 15 ATTACHMENT D – TRANSMITTER SPURIOUS EMI MEASUREMENT RESULTS _____ 18 ATTACHMENT E – FREQUENCY TOLERANCE MEASUREMENT RESULTS ____ 23-25 EMC Test Report #: ENP-0509-1007-TCB Prepared for ENPING CITY SHUANGYI ELECTRONICS INDUSTRIAL CO., LTD. Prepared by EMC Compliance Management Group Page 1 of 25 Disclaimer Notice When government drawing, specification, or other data are used for any purpose other than in connection with a definitely related government procurement operation, the United States Government thereby incurs no responsibility nor any obligation whatsoever; and the fact that the Government may have formulated, furnished, or in any way supplied the said drawing, specifications, or other data, is not to be regarded by implication or otherwise in any manner licensing the holder or any other person or corporation, or conveying any rights or permission to manufacture, use, or sell patented invention that may in any way be related thereto. This report must not be used to claim product endorsement by NVLAP or any agency of the U.S. Government. Reproduction Clause Any reproduction of this document must be done in full. No single part of this document may be reproduced without permission from EMC Compliance Management Group, 670 National Ave., Mountain View, CA 94043. Opinions and Interpretations This test report relates to the abovementioned equipment under test (EUT). Without the permission of EMC Compliance Management Group Test Lab this test report is not permitted to be duplicated in extracts. This test report does not entitle to carry any test mark on this or similar products. The manufacturer has sole responsibility of continued compliance of the device. Statement of Measurement Uncertainty The data and results referenced in the document are true and accurate. The reader is cautioned that there may be errors within the calibration limits of the equipment and facilities that can account for a nominal measurement error. Furthermore, component and process variability of devices similar to that tested may result in additional deviation. EMC Test Report #: ENP-0509-1007-TCB Prepared for ENPING CITY SHUANGYI ELECTRONICS INDUSTRIAL CO., LTD. Prepared by EMC Compliance Management Group Page 2 of 25 Administrative Data Test Sample : Wireless Microphone Model Name : WM-369 Brand Name : Serial Number : Engineering Sample Date Tested : 2005, September 15 th Applicant : ENPING CITY SHUANGYI ELECTRONICS INDUSTRIAL CO., LTD. B1. Foreign and Private Capital Industry Zone, Enping, Guangdong, China Telephone : 86-750-7820222 Fax : 86-750-7819928 Manufacturer : ENPING CITY SHUANGYI ELECTRONICS INDUSTRIAL CO., LTD. B1. Foreign and Private Capital Industry Zone, Enping, Guangdong, China EUT Description ENPING CITY SHUANGYI ELECTRONICS INDUSTRIAL CO., LTD., model name WM-369 (referred to as the EUT in this report) is a Wireless Microphone. EMC Test Report #: ENP-0509-1007-TCB Prepared for ENPING CITY SHUANGYI ELECTRONICS INDUSTRIAL CO., LTD. Prepared by EMC Compliance Management Group Page 3 of 25 Test Summary The Electromagnetic Compatibility requirements on model name WM-369 Wireless Microphone for these test are stated below. All results listed in this report relate exclusively to this above- mentioned model as the Equipment Under Test. This report confers no approval or endorsement upon any other component, host or subsystem used in the test set-up. FCC CFR 47 Part 74H Test Items Specification Description Test Results Remark Section 74.861(e)(1) RF Output Power Test Limit ≤50 mW (16.99 dBm) Complied, RF output power is 8.5mW (9.3dBm). See Attachment A Section 74.861(e)(5) Emission Bandwidth Limit ≤200 KHz Complied, 26 dB Bandwidth ≤200 KHz See Attachment B Section 74.861(e)(3) Section 2.1047(…

Text truncated - open the document above for the full version.

WM-369 Wireless Microphone Transmitter Specification: Carrier Frequency: 174.1 – 215.2 MHz Modulation Model: FM RF Output Power: 10 mW Frequency Deviation: < +/- 15 KHz Frequency Stability: < 0.005 % Spurious Emissions: 55dB Antenna: Integral Microphone: 600 ohm Power Supply: DC 9V Battery DC Voltage to the Final AMP Stage: DC 9V DC Current to the Final AMP Stage: 25 mA Dimension: 235 mm x 50 mm x 50mm

EUT Model Name: WM-369 Transmitter Spurious EMI Measurement Test Set-up Transmitter Spurious EMI Measurement Test Set-up EUT Model Name: WM-369 Frequency Tolerance Measurement Test Set-Up