TFVST-Q318CAR ALARM SYSTEM

FCC ID Label Sample for FCCID: TFVST-Q318 FCCID: TFVST-Q318

DESCRIPTION OF OPERATION The encoder generates a digital code serially transmit (typical designation) when press any button into the Central Processor Unit (modulator or called as mixer) stage in circuit. The serially digital signal mixed with the carrier at modulator (mixer) stage by way of FSK mode (Frequency Modulation) and to the Transmitter antenna. The modulation depth is designed such as ± 5KHz in this application, that means the pulse (may be at high level state or low level state) will trigger the oscillator to generate a frequency at a specified fundamental frequency +5KHz or −5KHz, depended on the designation. For example, if the carrier frequency defined as fundamental frequency +5KHz at high level state, then the alternative carrier frequency will be fundamental frequency −5KHz at low level state. The Central Processor will trigger the oscillator to generate a carrier frequency when receive the signal. The encoder generates a pulse code serially transmit (typical designation) when press any button into the Central Processor Unit (modulator or called as mixer) stage in circuit. The pulse signal mixed with the carrier at modulator (mixer) stage by way of Pulse Modulation and to the Transmitter antenna. The Central Processor will trigger the oscillator to generate a carrier frequency when any button was press and show the button on the LCD display. The tramsmitter is powered by the 12V battery.

1234 A B C D 4321 D C B A Title NumberRevisionSize A4 Date:22-Jun-2005Sheet of File:D:\线路板图\YK-1527.SCHDrawn By: R1 470 R6 472 L1 1UH Q1 3EM R4 102 R5 334 R7 472 R3 332 R2 473 C3 VCC GND S1 SW-PB S2 SW-PB S3 SW-PB S4 SW-PB R8 472 R8 472 4148 4148 4148 4148 SAW 433.92MHz 1 2 3 4 8 7 6 5 EV1527 D1 LED D2 D3 D3 D4 PDF created with pdfFactory trial version www.pdffactory.com

FCC PART 15 C MEASUREMENT AND TEST REPORT For Shanghai Steel Tower Alarm Equipment Co.,Ltd. Zone#3 Waigang International Automobile Fitting Ind.Zone, Jiading District, Shanghai, China FCC ID: TFVST-Q318 July 08, 2005 This Report Concerns: Original Report Equipment Type: CAR ALARM SYSTEM Test Engineer: Tony Wu Report Number: SE05F-087E Test Date: June 25~July 06 , 2005 Reviewed By: Prepared By: S&E Technologies Laboratory Ltd Room407,Block A Shennan Garden,Hi-Tech Industrial Park, Shenzhen 518057, P.R. China. Tel: 86-755-26636573, 26630631 Fax: 86-755-26630557 Note: This test report is limited to the above client company and the product model only. It may not be duplicated without prior written consent of S&E Technologies Laboratory Ltd. SHANGHAI STEEL TOWER ALARM EQUIPMENT CO.,LTD FCC ID: TFVST-Q318 TABLE OF CONTENTS 1 - GENERAL INFORMATION.........................................................................................................................................3 1.1 Product Description for Equipment Under Test (EUT)............................................................3 1.2 Test Standards........................................................................................................................4 1.3 Test Summary.........................................................................................................................4 1.4 Test Methodology...................................................................................................................4 1.5 Test Facility.............................................................................................................................5 1.6 Test Equipment List and Details.............................................................................................5 2 - SYSTEM TEST CONFIGURATION.............................................................................................................................6 2.1 Justification.............................................................................................................................6 2.2 EUT Exercise Software...........................................................................................................6 2.3 Special Accessories................................................................................................................6 2.4 Equipment Modifications.........................................................................................................6 2.5 Basic Test Setup Block Diagram............................................................................................6 3 – DISTURBANCE VOLTAGE AT THE MAINS TERMINALS.......................................................................................8 3.1 Measurement Uncertainty.......................................................................................................8 3.2 Applicable Standard................................................................................................................8 3.3 Test Description......................................................................................................................8 4- RADIATED DISTURBANCES......................................................................................................................................9 4.1 Measurement Uncertainty.......................................................................................................9 4.2 Limit of Radiated Disturbances...............................................................................................9 4.3 EUT Setup..............................................................................................................................9 4.4 Test Receiver Setup.............................................................................................................10 4.5 Test Procedure.....................................................................................................................10 4.6 Corrected Amplitude & Margin Calculation...........................................................................11 4.7 Radiated Emissions Test Result...........................................................................................11 5- 20DB BANDWIDTH...................................................................................................................................................14 5.1 Measurement Uncertainty.....................................................................................................14 5.2 Limit of 20dB Bandwidth.......................................................................................................14 5.3 EUT Setup............................................................................................................................14 5.4 Test Procedure.....................................................................................................................14 5.5 Emissions within Band Edges Test Result............................................................................15 6- DUTY CYCLE.............................................................................................................................................................16 6.1 Measurement Uncertainty.....................................................................................................16 6.2 EUT Setup............................................................................................................................16 6.3 Test Procedure.....................................................................................................................16 6.4 Measurement Result.............................................................................................................16 Report No. SE05F-087E Page 2 of 19 FCC PART 15 C Report SHANGHAI STEEL TOWER ALARM EQUIPMENT CO.,LTD FCC ID: TFVST-Q318 1 - GENERAL INFORMATION 1.1 Product Description for Equipment Under Test…

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