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BY3E892Toy Remote Control

Scientific Toys Ltd
Toy Remote Control - FCC ID BY3E892 - Scientific Toys Ltd
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Application Details

Equipment Class
DXX - Part 15 Low Power Communication Device Transmitter
Date of Grant
Apr 06, 2000
Application Purpose
Original Equipment
Date of Application
Mar 28, 2000
Equipment Note
Toy Remote Control
Frequency Range
49.82000000 - 49.90000000
Company
Scientific Toys Ltd
Country
Hong Kong

Documents & Files

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Block Diagram

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Cover Letter(s)

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External Photos

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ID Label/Location Info

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Internal Photos

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Operational Description

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Schematics

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Test Report

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Document Text

Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Test Report

TABLE OF CONTENTS LIST APPLICANT: Scientific Toys Ltd. FCC ID: BY3E892 TEST REPORT CONTAINING: PAGE 1......TEST EQUIPMENT LIST AND TEST PROCEDURE PAGE 2......TEST PROCEDURE CONTD. & CIRCUIT DESCRIPTION PAGE 3......RADIATION INTERFERENCE TEST DATA PAGE 4......OCCUPIED BANDWIDTH TEST DATA EXHIBITS CONTAINING: EXHIBIT 1..........POWER OF ATTORNEY LETTER EXHIBIT 2..........BLOCK DIAGRAM EXHIBIT 3..........SCHEMATIC EXHIBIT 4A-4B......INSTRUCTION MANUAL EXHIBIT 5..........SAMPLE OF FCC ID LABEL AND LOCATION EXHIBIT 6..........EXTERNAL PHOTO - FRONT SIDE EXHIBIT 7..........EXTERNAL PHOTO - BACK SIDE EXHIBIT 8..........INTERNAL PHOTO - COMPONENT SIDE EXHIBIT 9..........INTERNAL PHOTO - COPPER SIDE EXHIBIT 10.........INTERNAL PHOTO - COPPER SIDE CHASSIS VIEW EXHIBIT 11.........OCCUPIED BANDWIDTH PLOT - CW APPLICANT: Scientific Toys Ltd. FCC ID: BY3E892 REPORT #: T:\CUS\S\SCIENTIF\SCI83H0\SCI83H0.RPT PAGE: TABLE OF CONTENTS LIST APPLICANT: Scientific Toys Ltd. FCC ID: BY3E892 TEST EQUIPMENT LIST 1._X Spectrum Analyzer: HP 8566B-Opt 462, S/N 3138A07786, w/ preselector HP 85685A, S/N 3221A01400, Quasi-Peak Adapter HP 8565OA, S/N 3303A01690 & Preamplifier HP 8449B-OPT H02, S/N 3008A00372 Cal. 10/17/99 2._X_Signal Generator: HP 8640B, S/N 2308A21464 Cal. 9/23/99 3.___Signal Generator: HP 8614A, S/N 2015A07428 Cal. 5/29/99 4.___Passive Loop Antenna: EMCO Model 6512, 9KHz to 30MHz, S/N 9706-1211 Cal. 6/23/97 5._X Biconnical Antenna: Eaton Model 94455-1, S/N 1057 6._X_Log-Periodic Antenna: Electro-Metrics Model EM-6950, S/N 632 7.___Dipole Antenna Kit: Electro-Metrics Model TDA-30/1-4, S/N 153 Cal. 11/24/99 8.___Double-Ridged Horn Antenna: Electro-Metrics Model RGA-180, 1-18 GHz, S/N 2319 Cal. 4/27/99 9.___Horn 40-60GHz: ATM Part #19-443-6R 10.___Line Impedance Stabilization Network: Electro-Metrics Model ANS-25/2, S/N 2604 Cal. 2/9/00 11.___Line Impedance Stabilization Network: Electro-Metrics Model EM-7820, S/N 2682 Cal. 12/1/99 12.___Temperature Chamber: Tenney Engineering Model TTRC, S/N 11717-7 13.___AC Voltmeter: HP Model 400FL, S/N 2213A14499 Cal. 9/21/99 14.___Digital Multimeter: Fluke Model 8012A, S/N 4810047 Cal 9/21/99 15.___Digital Multimeter: Fluke Model 77, S/N 43850817 Cal 9/21/99 16.___Oscilloscope: Tektronix Model 2230, S/N 300572 Cal 9/23/99 17.___Frequency Counter: HP Model 5385A, S/N 3242A07460 Cal 10/6/99 TEST PROCEDURE GENERAL: This report shall NOT be reproduced except in full without the written approval of TIMCO ENGINEERING, INC. RADIATION INTERFERENCE: The test procedure used was ANSI STANDARD C63.4-1992 using a HEWLETT PACKARD spectrum analyzer with a prese- lector. The bandwidth of the spectrum analyzer was 100 kHz with an appropriate sweep speed. The analyzer was calibrated in dB above a microvolt at the output of the antenna. The resolution bandwidth was 100KHz and the video bandwidth was 300KHz. The ambient temperature of the UUT was 80oF with a humidity of 76%. APPLICANT: Scientific Toys Ltd. FCC ID: BY3E892 REPORT #: T:\CUS\S\SCIENTIF\SCI83H0\SCI83H0.RPT PAGE: 1 APPLICANT: Scientific Toys Ltd. FCC ID: BY3E892 TEST PROCEDURES CONTINUED FORMULA OF CONVERSION FACTORS: The Field Strength at 3m was estab- lished by adding the meter reading of the spectrum analyzer (which is set to read in units of dBuV) to the antenna correction factor sup- plied by the antenna manufacturer. The antenna correction factors are stated in terms of dB. The gain of the Preselector was accounted for in the Spectrum Analyzer Meter Reading. Example: Freq (MHz) METER READING + ACF = FS 33 20 dBuV + 10.36 dB = 30.36 dBuV/m @ 3m ANSI STANDARD C63.4-1992 10.1.7 MEASUREMENT PROCEDURES: The unit under test was placed on a table 80 cm high and with dimensions of 1m by 1.5m. The table used for radiated measurements is capable of continuous rotation. When an emission was found, the table was rotated to produce the maximum signal strength. At this point, the antenna was raised and lowered from 1m to 4m. The antenna was placed in both the horizontal and vertical planes. The situation was similar for the conducted measurement except that the table did not rotate. The EUT was setup as described in ANSIC63.4-1992 with the EUT 40 cm from the vertical ground wall. CIRCUIT_DESCRIPTION: The circuit is activated by the action of the paddle switches which make ground contact for the battery. This allows the proper current to be supplied to Q1 the crystal oscillator and Q2 the modulator/buffer. Zener diode ZD1 reduces the voltage from the battery to supply the proper voltage level to U1. The modulation to base of Q2 is supplied by U1. The different modulation patterns are generated by U1 using the different actions of the paddle switches. Pin 8 of U1 is the modulation output. C8, C9, C10 and L3 provide the output impedance match to the antenna and harmonics suppression. ANTENNA_AND_GROUND_CIRCUITRY This unit makes use of a external 5" antenna. The antenna is inductively coupled. This unit is powered from a 9.0V battery. No ground connection is provided. The unit relies on the ground tract of the printed circuit board. REPORT #: T:\CUS\S\SCIENTIF\SCI83H0\SCI83H0.RPT PAGE #: 2 APPLICANT: Scientific Toys Ltd. FCC ID: BY3E892 NAME OF TEST: RADIATION INTERFERENCE RULES PART NO.: 15.235 REQUIREMENTS: CARRIER FREQUENCY WILL NOT EXCEED 80 dBuV/m AT 3M. OUT-OF-BAND EMISSIONS SHALL NOT EXCEED: 30 - 88 MHz 40.0 dBuV/M MEASURED AT 3 METERS 88 - 216 MHz 43.5 dBuV/M 216 - 960 MHz 46.0 dBuV/M ABOVE 960 MHz 54.0 dBuV/M TEST DATA: PEAK EMISSION METER READING COAX ANTENNA FIELD FREQUENCY AT 3 METERS LOSS CORRECTION STRENGTH MARGIN ANT. MHz dBuV dB FACTOR dB dBuV/m@3m dB POL. 49.90 61.80 0.25 11.00 73.05 6.95 V 99.80 24.70 0.80 8.34 33.84 9.66 H 149.70 11.80 0.80 16.90 29.50 14.00 V 249.50 15.20 1.20 13.36 29.76 16.24 H 299.40 11.50 1.40 15.66 28.56 17.44 H 399.20 20.00 1.40 16.98 38.38 7.62 H 449.10 9.20 1.60 18.13 28.93 17.07 V 499.00 8.40 1.60 19.28 29.28 16.72 V SAMPLE CALCULATION: FSdBuV/m = MR(dBuV) + ACFdB. TEST PROCEDURE: The proce…

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

Contact Information

Applicant

Muk Shui Leung(Electronic Engineering Assistant Manager)
[email protected]852 2313 0004Fax: 852 2897 0174

Technical Contact

Timco Engineering, Inc.Eric F Dobson
[email protected]888-472-2424

P.O. Box 370 · Newberry, Florida · United States

Non-Technical Contact

Timco Engineering, Inc.Eric F Dobson
[email protected]888-472-2424

Test Firm

Timco Engineering, Inc.S Sanders
[email protected]888-472-2424Fax: 352-472-2030

Technical Specifications

#Rule PartsFrequency RangePower Output
115C49.82 MHz - 49.9 MHz-

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