QE8610XXTX27AR/C HELICOPTER

RF CW OSC 27.195MHz Circuit(13.5975MHZ Transmit Antenna Frequency Multiplier DC Source &Indicator Circuit 61081 Helicopter Tx Block Diagram(27MHz) MCU RF AMP Function ControlSwitch Circuit

EUT - Front View EUT - Back View

FCC ID Label Sample for Model: 61081 FCC ID: QE8610XXTX27A This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.

FCC ID Label This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. The Label must not be a stick-on paper. The Label on these products must be permanently affixed to the product and readily visible at the time of purchase and must last the expected lifetime of the equipment not be readily detachable. Proposed Label Location on EUT EUT Bottom View/proposed FCC Mark Location FCC ID: QE8610XXTX27A This device complies with Part 15 of the FCC

PCB- Front View PCB- Back View

Interactive Toy Concepts (HK) Ltd. ITEM NO: MODEL NAME:MINI HELICOPTER PLANE TEL:852-2368-8166 FRRQUENCY: 27.1950MHZ FAX:852-2368-8155 DATE: 02-3-2007 ENGINEERING DEPARTMENT BY: B.LEE REV: ORIG (CIRCUIT DESCRIPTION) **CIRCUIT DESCRIPTIONS IN TRANSMIT MODE WHEN THE CONTROL KNOB IS PRESSED,A CW SIGNAL IS TRANSMITTED.THE CRYSTAL CONTROLLED OSCILLATOR Q3 OUTPUT IS COUPLED THROUGH C10 TO THE BASE OF Q2. FROM Q2 THE SIGNAL IS FED THROUGH T-2. Q2 OUPTUT IS COUPLEED THROUGH C13 TO THE BASE OF Q1. FROM Q1 THE SIGNAL IS FED THROUGH T1. THE LOW PASS FIETER MADE UP OF C14 & T-1 C2 AND C1 WHICH ARE CONNECTED TO THE ANTENNA ROD. THE MODULATION IS PROVIDED BY IC2, THEN THE D1 DIODE WILL BE FREQUENCY MODULATED THE CRYSTAL FREQUENCY. OF Q3 THAT WILL MODULATE THE RF TUNNED CIRCUTT DIRECTLY. ENERGRY IS SUPPLIED BY A 9.6VDC 6F22 ALKALINE BATEERY. IN RECEIVE MODE Q1 IS THE UNTUNED RF AMPLIDIER. IC1 IS THE SUPERHETERODYNEIC THAT CONTAINS LOCAL OSCILLATOR, MIXER, AND IF AMPLIFIER, AND SIGNAL DETEDTOR IC2 IS THE SIGNAL DECODER AND CHANNELS SEPERATION IC. IC4 A/B ARE THE UP-DOWN & BACKWA R D - F O RWA R D P O W E R M O T O R S DRIVER. IC3 IS THE DC VOLTAGE REGULATOR FOR FRONT END. ENERGRY IS SUPPLIED BY A 3.7 VDC 200MA/H RECHARGED TYPE LITHUM BATTERY. ANT ENNA AND GROUND CIRCUITRY. THIS UNIT MAKES USE OF AN EXTENAL 12-INCH ANTENNA. THE ANTENNA IS INDUCTIVELY COUPLED. THE UNIT RELIES ON THE GROUND TRACE OF THE PRINTED CIRCUIT BOARD. NO EXTERNAL GROUND IS PROVIDED. **BACKGROUND THE DEVICE DESCRIBED HEREIN IS A WIRELES (RF) TOY AREOPLANE CONTROLLER TRANSMITTER FOR USE WITH THE TOY AEROPLANE CONTROLLED RECEIVER. IT HAS ONLY ONE CHANNEL OF OPERATION WHICH THE USER MAY CHOOSE ONLY. AND IS USED TO SEND BUTTON-STATE DATA FROM THE CONTROLLER TO A WIRELESS RECEIVER CONNECTED WITH MOTORS **TYPICAL OPERATION TYPICAL OPERATION WOULD INVOLVE THE USER TURNING ON THE UNIT TO THE TOY GAME WHEN TURNED ON, THE UNIT COMES UP ON THE DEFAULT CHANNEL AND TRANSMITS A CONTINUOUSLY STEAM DATA.THE USER CAN NOT, AT WILL, CHANGE TO ANY OTHER OF THE PREDEFINED CHANNEL. CONFIGURATION THE TRANSMITTED RF CIRCUITRY CONSISTS OF A CRYSTAL CONTROLLED OSCILLATOR, FOLLOWED BY TWO RF AMPLIFIER & FINALLY AN ANTENNA. THE MAIN CHARACTERISTICS OF THIS CONFIGURATION ARE SHOWN BELOW: FREQUENCY RANGES 27.1950MHZ OCCUPIED BANDWIDTH (-26DB) <100KHZ MAX FREQUENCY STABILITY +/-10 PPM MAX MODULATION METHOD F M 5KC DEV. MAX OUTPUT POWER 80 DBUVM MAX REFERENCE OSCILLATOR A 27.1950MHZ CRYSTAL OSCILLATOR IS USED TO GENERATE THE REFERENCE FREQUENCY. IT HAS A STABILITY OF +/-10 PPM. AMPLIFIER THE OSCILLATOR IS FOLLOWED BY TWO AMPLIFIERS THSES ACT MORE AS BUFFER FOR THE OSCILLATOR THAN AS GAIN STAGE. AND ADD VERY LITTLE POWER TO THE SIGNAL. THE FINAL OUTPUT IS 80 DBUV PER METER MAX ANTENNA THE SYSTEM ANTENNA IS A COPPER ANTENNA ROD LINKED TO PCB. ANTENNA ROD CAN BE TURNED OUP OR IN PENDNG USER’S WISH. MICROCONTROLLER THE TX SYSTEM IS CONTROLLED BY A SMALL MICROCONTROLLER RUNNING WITH A 4MHZ +/-10% OSCILLATOR THE RX SYSTEM IS CONTROLLED BY A SMALL MICROCONTROLLER RUNNING WITH A 26.740MHZ +/-10 PPM FOR FIRST LOCAL OSCILLATOR (MIXER IC)

细蚊_TXv00(2501)(27MHz).sch-1 - Thu Mar 01 09:25:09 2007

FCC TEST REPORT Page 1 of 22 FCC ID : QE8610XXTX27A Applicant : Interactive Toy Concepts(HK) Ltd. 7/F.,Eu Yan San Tower, 11-15 Chatham Road South, TST, Kowloon, Hong Kong Equipment Under Test (EUT) : Product description : R/C Helicopter Model No. : 61081 Standards : FCC 15 Subpart C Paragraph 15.227 Date of Test : March 2, 2007 Test Engineer : Tiger Su Reviewed By : PERPARED BY: Waltek Services (Shenzhen) Co., Ltd. 8C,West Tower, Aidi Building, No.5003 Binhe Rd, Futian District, Shenzhen518045, Guangdong, China. Tel: 86-755-83551033 Fax: 86-755-83552400 Interactive Toy Concepts(HK) Ltd. FCC ID: QE8610XXTX27A Page 2 of 22 2 Contents Page 1 COVER PAGE..........................................................................................................................................................1 2 CONTENTS ..............................................................................................................................................................2 3 TEST SUMMARY....................................................................................................................................................5 4 GENERAL INFORMATION..................................................................................................................................6 4.1 CLIENT INFORMATION............................................................................................................................................6 4.2 GENERAL DESCRIPTION OF E.U.T...........................................................................................................................6 4.3 DETAILS OF E.U.T. .................................................................................................................................................6 4.4 DESCRIPTION OF SUPPORT UNITS...........................................................................................................................6 4.5 STANDARDS APPLICABLE FOR TESTING..................................................................................................................6 4.6 TEST FACILITY........................................................................................................................................................7 4.7 TEST LOCATION......................................................................................................................................................7 5 EQUIPMENT USED DURING TEST ...................................................................................................................8 6 CONDUCTED EMISSION TEST ..........................................................................................................................9 6.1 TEST EQUIPMENT....................................................................................................................................................9 6.2 TEST PROCEDURE...................................................................................................................................................9 6.3 CONDUCTED TEST SETUP.....................................................................................................................................10 6.4 EUT OPERATING CONDITION...............................................................................................................................10 6.5 CONDUCTED EMISSION LIMITS.............................................................................................................................11 6.6 CONDUCTED EMISSION TEST RESULT...................................................................................................................11 7 RADIATION EMISSION TEST...........................................................................................................................12 7.1 TEST EQUIPMENT..................................................................................................................................................12 7.2 MEASUREMENT UNCERTAINTY.............................................................................................................................12 7.3 TEST PROCEDURE.................................................................................................................................................12 7.4 RADIATED TEST SETUP.........................................................................................................................................13 7.5 SPECTRUM ANALYZER SETUP...............................................................................................................................14 7.6 CORRECTED AMPLITUDE & MARGIN CALCULATION............................................................................................14 7.7 SUMMARY OF TEST RESULTS................................................................................................................................14 7.8 EUT OPERATING CONDITION...............................................................................................................................15 7.9 RADIATED EMISSIONS LIMIT.................................................................................................................................15 7.10 RADIATED EMISSIONS TEST RESULT................................................................................................................16 7.11 RADIATED EMISSION TEST DATA.....................................................................................................................16 8 OCCUPIED BANDWIDTH ..................................................................................................................................17 8.1 TEST PROCEDURE.................................................................................................................................................17 9 PHOTOGRAPHS OF TESTING....................................................................................…

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Radiation Emission Test View