O44J2W907RTwo ways car alarm system

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O44J2W907R Circuit Descriptions. (Block1,2,3,4,5,6,17 is Logic part and another block is RF part) Block1 : The Battery supply the power of 1.5volts to the Regulator. Block2 : This is the 3volts Regulator circuit by U5,D3,L1,TC2,TC3 Block3 : The Buttons of this product. When Being pressed this remote starts to work. Block4 : This is the micro-controller U1(Micro-controller) reads the button and make the radio transmission circuits work. Block5 : This is the real time circuit XT1 supply the real time clock to the U1. Block6 : This is the radio power control circuit by U1. U1 make radio frequency circuit (B7) enable by Block6. Block7 : U1 can make the modulation by this block. By switching (between 0V and 3V) at C50 the frequency modulation is done. Block8 : This is the basic oscillation circuit to radiate the radio frequency. Oscillates 907.1695MHz by U2,X2,VC1. Block9 : Besides 907.1695MHz will be removed by first filter (L15,C45,C54). Block10 : Besides 907.1695MHz will be removed by second filter (L11,C36,L12). Block11 : This is the Low Noise Amplify and SAW filter circuit by Q1,Q2,L16,L3,SAW1. Block 12 : This is the First local Frequency oscillator(885.7695MHz) circuit by X1,Q5,Q7,L8,L17 Block 13 : This is the First mixer (21.4MHz) circuit by Q3,L6,MCF1. Block 14 : This is the Second local frequency oscillator circuit by XT1,R10,C20,C21 Block 15 : This is the Second mixer (455KHz) circuit by U1,CF1 Block 16 : This is the Discriminator circuit by U1,FT1. Block 17 : This is the reception power control circuit by U1

KTL Korea Testing Laboratory Page 1 of 9 TEST REPORT This test report only responds to the tested sample and shall not be reproduced except in full without written approval of the Korea Testing Laboratory. Tested and reported by Reviewed by Jeong-Min Kim, Senior Engineer Hee-Soo Kim , Telecommunication Team Manager KOREA TESTING LABORATORY FG101-01-02-00 222-13, Guro-Dong Guro-Gu Seoul Korea 152-053 http://www.ktl.re.kr Ref. Report No. 04-1341-002-01 Name and address of the applicant Youngshin Electronic Co., Ltd. 4FL., Hirun Town Bldg. , 536-3, Unhaeng-Dong, Sihung, Kyungki-Do, 429-060 Korea Standard / Test regulation FCC Part 15, Subpart C Test result Pass Incoming date : January 09, 2004 Test item(s) ; Remote Control/Security Device Transceiver (Two Way Car Alarm System) Model/type ref. ; 2W907R (Remoter Controller Unit) Manufacturer ; Youngshin Electronic Co., Ltd. Additional information ; -Required Authorization : Certification -FCC ID. : O44J2W907R -Note : Test report(Verification) of Receiver portion of this unit is issued on Ref. Report No. 04-1341-002-02. Test date : January 30, 2004 Issue date : February 13, 2004 Ref. Report No. 04 - 1341 – 002-01 Page 2 of 9 Korea Testing Laboratory Telecommunication Team 222-13, Guro3-dong, Guro-gu, Seoul Korea 152-848 TABLE OF CONTENTS I. GENERAL INFORMATION 3 1. Grantee’s Name and Mailing Address 2. Manufacturer's Name and Mailing Address 3. Equipment Descriptions 4. Rules and Regulations 5. Measuring Procedure 6. Place of Measurement 7. Date of Measurement . GENERAL REQUIREMENTS OF THE EUT 4 1. Labeling Requirement (Section 15.19) 2. Information to User (Sections 15.21) 3. Special Accessories (Section 15.27) . RADIATED EMISSION MEASUREMENT (Section 15.249) 5 1. Test Procedure 2. Photograph of the test configuration 3. Sample Calculation 4. Measurement Data . TEST EQUIPMENTS USED FOR MEASUREMENT 9 Ref. Report No. 04 - 1341 – 002-01 Page 3 of 9 Korea Testing Laboratory Telecommunication Team 222-13, Guro3-dong, Guro-gu, Seoul Korea 152-848 . GENERAL INFORMATION 1. Grantee’s Name and : YoungShin Electronics Co., Ltd. Mailing Address 4FL., Hirun Town Bldg., 536-3, Unhaeng-Dong, Sihung, Kyungki-Do, 429-060 Korea 2. Manufacturer's Name and : YoungShin Electronics Co., Ltd. Mailing Address 4FL., Hirun Town Bldg., 536-3, Unhaeng-Dong, Sihung, Kyungki-Do, 429-060 Korea 3. Equipment Descriptions 3.1 Operating Frequency : 907.16 MHz 3.2 Power Supply : DC 1.5 V (Battery) 4. Rules and Regulations : FCC Part 15, Subpart C 5. Measuring Procedure : ANSI C63.4-2001 6. Place of Measurement : Absorber-lined Room (KTL) 7. Date of Measurement 7.1 Conducted Emission : Not Applicable 7.2 Radiated Emission : January 30, 2004 Ref. Report No. 04 - 1341 – 002-01 Page 4 of 9 Korea Testing Laboratory Telecommunication Team 222-13, Guro3-dong, Guro-gu, Seoul Korea 152-848 . GENERAL REQUIREMENTS OF THE EUT 1. Labeling Requirement (Section 15.19) 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 interface, and (2) this device must accept any interference received, including interference that may cause undesired operation. 1.1 Location of Label : User’s Guide Manual 1.2 How Applied : Printed 2. Information to User (Section 15.21) The following or similar statements were provided in the manual for user instruction. Please refer page 1 of the attached manual for details. CAUTION : Any changes or modifications in construction of this device which are not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 3. Special Accessories (Section 15.27) 3.1 Were the special Accessories provided? [ ] yes, [ x ] no 3.2 If yes, details for the special accessories are as follows : 3.3 If yes, were the appropriate instructions provided on the first page of the text concerned with the installation of the device? [ ] yes, [ ] no 3.4 Are these accessories provided of the type which can be readily obtained from multiple retail outlets ? [ ] yes, [ ] no And therefore does the manual specify what additional components or accessories are required to used in order to comply with the Rules? [ ] yes, [ ] no Ref. Report No. 04 - 1341 – 002-01 Page 5 of 9 Korea Testing Laboratory Telecommunication Team 222-13, Guro3-dong, Guro-gu, Seoul Korea 152-848 . RADIATED EMISSION MEASUREMENT (Section 15.249) 1. Test Procedure 1.1 Preliminary Testing for Reference Preliminary testing was performed in a KTL absorber-lined room to determine the emission characteristics of the EUT. The EUT was placed on the wooden table which has dimensions of 0.8 meters in height, 1 meter in length and 1.5 meters in width. Receiving antenna (Biconi-Log antenna : 26 to 2000 MHz or Horn Antenna : 1 to 18 GHz) was placed at the distance of 1 meter from the EUT. An attempt was made to maximize the emission level with the various configurations of the EUT. Emission levels from the EUT with various configurations were examined on a spectrum analyzer connected with a RF amplifier and graphed by a plotter. 1.2 Final Radiated Emission Test at an Absorber-Lined Room The final measurement of radiated field strength was carried out in a KTL absorber-lined Room that was listed up at FCC according to the "Radiated Emissions Testing" procedure specified by ANSI C63.4. Based on the test results in preliminary test, measurement was made in same test set up and configuration with 3 orthogonal planes which produced maximum emission level. Receiving antenna was installed at 3-meter distance from the EUT, and was connected to an EMI receiver or spectrum analyzer with a RF amplifier. Turntable was rotated through 360 degrees and receiving antenna height was varied from 1 to 4 meters above the ground plane with horizontal and vertical polarization to read maximum emission level. If necessary, the radiated emission measurements could be performed at a closer distance than specified distance t…

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Photograph of the test configuration