KNZ27171-49TXRemote Control Toy Transmitter

Block Diagram For Crazy Taxi DS27171 ( 49.860MHz Transmitter Part )Date : 25,Apr,2003 Block Diagram For Crazy Taxi DS27171 ( 49.860MHz Receiver Part ) Low Frequency Amplifier IIForward Backward Motor Driver Left Right Motor Driver Left Right Motor Forward Backward Motor Rectifier & Amplifier Decoder & Control Signal Output RX Antenna Superrgeneration & Detector Circuit Low Frequency Amplifier I TX Antenna 49.860MHz Local Oscillation Pulse Code Modulation Mixer & Modulated Amplifier RF Amplifier

PHOTOGRAPH OF THE PRODUCT FRONT VIEW OF THE PRODUCT REAR VIEW OF THE PRODUCT

PHOTOGRAPH OF THE PRODUCT INNER CIRCUIT TOP VIEW INNER CIRCUIT BOTTOM VIEW

FCC ID: KNZ27171-49TX Circuit Description The 49.86MHz crystal oscillator drives the base of Q2 the final/buffer amplifier. The modulation provided by U1. The output of Q2 has the matching network consisting of L3 and C9 that limit the harmonic content and effect the proper coupling of the antenna to the output stage. Antenna, Ground and Power Source The antenna consists of a 30cm long metal antenna. There is no external ground connection. The ground is only that of the printed circuit board. Electric current is supplied by a 9 Volt (“6F22” size battery x 1) primary battery

TX5-49MHZ.sch-1 - Thu May 08 09:59:54 2003

Date: 2003-06-03 TEST REPORT Page 1 of 20 No.: HM110340 FCC PART 15 SUBPART C CERTIFICATION REPORT FOR LOW POWER TRANSMITTER TEST REPORT No.:HM110340 Equipment Under Test [EUT]:Crazy Taxi (49MHz Transmitter) Model Number:27171 Applicant:DSI (HK) Ltd. FCC ID :KNZ27171-49TX Date: 2003-06-03 TEST REPORT Page 2 of 20 No.: HM110340 CONTENT: Cover Page 1 of 20 Content Page 2-3 of 20 Conclusion Page 4 of 20 1.0General Details 1.1Test Laboratory Page 5 of 20 1.2Applicant Details Page 5 of 20 Applicant HKSTC Code Number for Applicant Manufacturer 1.3Equipment Under Test [EUT] Page 6 of 20 Description of EUT operation 1.4Date of Order Page 6 of 20 1.5Submitted Sample Page 6 of 20 1.6Test Duration Page 6 of 20 1.7Country of Origin Page 6 of 20 1.8 Additional Information of EUT Page 7 of 20 2.0Technical Details 2.1Investigations Requested Page 8 of 20 2.2Test Standards and Results Summary Page 8 of 20 3.0Test Results 3.1Emission Page 9-13 of 20 3.2Bandwidth Measurement Page 14-15 of 20 Date: 2003-06-03 TEST REPORT Page 3 of 20 No.: HM110340 Appendix A List of Measurement Equipment Page 16 of 20 Appendix B Duty Cycle Correction During 100 msec Page 17-18 of 20 Appendix C Photographs Page 19-20 of 20 Date: 2003-06-03 TEST REPORT Page 4 of 20 No.: HM110340 CONCLUSION The submitted product was deemed to have COMPLIED after modification by customer with the requirements of Federal Communications Commission [FCC] Rules and Regulations Part 15. The tests were performed in accordance with the standards described above and on Section 2.2 in this Test Report. Verified byPatrick Wong for Chief Executive Date: 2003-06-03 TEST REPORT Page 5 of 20 No.: HM110340 1.0General Details 1.1Test Laboratory The Hong Kong Standards and Testing Centre Ltd. EMC Laboratory 10 Dai Wang Street, Taipo Industrial Estate New Territories, Hong Kong 1.2Applicant Details Applicant DSI (HK) LTD. Suite 1401, New T & T Centre Harbour City, Tsimshatsui, Kowloon, Hong Kong. HKSTC Code Number for ApplicantSMU001 Manufacturer SMART UNION INDUSTRAIL LTD. 217-222 Advanced Technology Centre, 2 Choi Fat Street, Sheung Shui, N.T., Hong Kong. Date: 2003-06-03 TEST REPORT Page 6 of 20 No.: HM110340 1.3Equipment Under Test [EUT] Description of Sample Product:Crazy Taxi (49MHz Transmitter) Manufacturer:Smart Union Industrial Ltd. Brand Name:DSI Model Number:27171 Input Voltage:9Vd.c (“6F22” size battery x 1) 1.3.1Description of EUT Operation The Equipment Under Test (EUT) is an DSI (HK) Ltd., Crazy Taxi (49MHz Transmitter). The transmitter is a 2 button transmitter. The EUT continues to transmit while button is being pressed, Modulation by IC. and tape is pulse modulation. 1.4Date of Order 2003-04-22 1.5Submitted Sample(s): 3 Samples per model 1.6Test Duration 2003-05-16 1.7Country of Origin China Date: 2003-06-03 TEST REPORT Page 7 of 20 No.: HM110340 1.8Additional Information of EUT SubmittedNot Available User Manual Part List Circuit Diagram Printed Circuit Board [PCB] Layout Block diagram FCC ID Label Date: 2003-06-03 TEST REPORT Page 8 of 20 No.: HM110340 2.0Technical Details 2.1Investigations Requested Perform ElectroMagnetic Interference measurement in accordance with FCC 47CFR [Codes of Federal Regulations] Part 15 and ANSI C63.4:2000 for FCC Certification. 2.2Test Standards and Results Summary Tables EMISSION Results Summary Test ConditionTest RequirementTest MethodClass /Test Result SeverityPassFailedN/A Field Strength of Fundamental Emissions & Spurious Emissions FCC 47CFR 15.235ANSI C63.4:2000N/A Radiated Emissions, 30MHz to 1GHz FCC 47CFR 15.209ANSI C63.4:2000Class B Conducted Emissions on AC, 0.15MHz to 30MHz FCC 47CFR 15.207ANSI C63.4:2000Class B Note: N/A - Not Applicable Date: 2003-06-03 TEST REPORT Page 9 of 20 No.: HM110340 3.0Test Results 3.1Emission 3.1.1Radiated Emissions Test Requirement:FCC 47CFR 15.235 Test Method:ANSI C63.4:2000 Test Date:2003-05-16 Mode of Operation:On mode Test Method: The sample was placed 0.8m above the ground plane on the OATS *. Measurements in both horizontal and vertical polarities were performed. During the test, each emission was maximized by: having the EUT continuously working, investigate all operating modes, rotated about all 3 axis (X, Y & Z) to obtain worst position, manipulating interconnecting cables, rotating turntable, varying antenna height from 1m to 4m in both horizontal and vertical polarizations. The emissions worst-case are shown in Test Results of the following pages. *:OATS [Open Area Test Site] located at HKSTC with a metal ground plane on filed with the FCC pursuant to section 2.948 of the FCC rules, with Registration Number: 90657. Test Setup: EUT distance = 3m Pre -Amplifier Receiver Turn Table Computer Ground plane Date: 2003-06-03 TEST REPORT Page 10 of 20 No.: HM110340 Limits for Field Strength of Fundamental Emissions [FCC 47CFR 15.235]: Frequency Range of Fundamental Field Strength of Fundamental Emission [Peak] Field Strength of Fundamental Emission [Average] [MHz][μV/m][μV/m] 49.82-49.90100,00010,000 Results: FrequencyCorrectionLimit @3mAntenna FactorPolarity MHz dB μ V/m μ V/m 49.8646.710.056.7683.9100,000Vertical dB μ V/m Field Strength Field Strength of Fundamental Emissions Peak Value Measured Level @3m dB μ V/m Field Strength μ V/m FrequencyCorrectionLimit @3mAntenna FactorPolarity MHz dB μ V/m μ V/m 49.8640.710.050.7342.8100,00Vertical μ V/mdB μ V/m Field Strength Field Strength of Fundamental Emissions Average Measured Level @3m dB μ V/m Field Strength According to FCC 47CFR15.35, the limit on the radio frequency emissions as measured using instrumentation with a peak detector function, corresponding to 20dB above the maximum permitted average limit for the frequency being investigated unless a different peak emission limit is otherwise specified in the rules. Remarks: *: Adjusted by Duty Cycle = -6dB *:Linear interpolations Correction Factor included Antenna Factor and Cable Attenuation. Calculated measurement uncertainty=30MHz to 300MHz±3.7dB 300MHz to 1GHz+3.…

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TEST SET UP PHOTOGRAPH OF THE PRODUCT MEASUREMENT OF RADIATED EMISSION TEST SET UP MEASUREMENT OF CONDUCTED EMISSION TEST SET UP