BY3E890Low Power Transmitter

TABLE OF CONTENTS LIST APPLICANT: SCIENTIFIC TOYS LTD. FCC ID: BY3E890 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............LETTER CONFIRMING MODIFICATIONS EXHIBIT 3............BLOCK DIAGRAM EXHIBIT 4............SCHEMATIC EXHIBIT 5A-5B........PARTS LIST EXHIBIT 6............INSTRUCTION MANUAL EXHIBIT 7............SAMPLE OF FCC ID LABEL AND LOCATION EXHIBIT 8............EXTERNAL PHOTO - FRONT VIEW EXHIBIT 9............EXTERNAL PHOTO - BACK VIEW EXHIBIT 10...........INTERNAL PHOTO - COMPONENT SIDE EXHIBIT 11...........INTERNAL PHOTO - COPPER SIDE EXHIBIT 12...........OCCUPIED BANDWIDTH PLOT EXHIBIT 13...........OCCUPIED BANDWIDTH PLOT - BAND EDGE APPLICANT: SCIENTIFIC TOYS LTD. FCC ID: BY3E890 REPORT #: T:\CUS\S\SCIENTIF\122ZH0\122ZH0.RPT PAGE: TABLE OF CONTENTS LIST APPLICANT: SCIENTIFIC TOYS LTD. FCC ID: BY3E890 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_Biconnical Antenna: Eaton Model 94455-1, S/N 1057 3._X_Log-Periodic Antenna: Electro-Metrics Model EM-6950, S/N 632 4.___Double-Ridged Horn Antenna: Electro-Metrics Model RGA-180, 1-18 GHz, S/N 2319 Cal. 4/27/99 5.___Horn 40-60GHz: ATM Part #19-443-6R 6.___Line Impedance Stabilization Network: Electro-Metrics Model ANS-25/2, S/N 2604 Cal. 2/9/00 7.___Temperature Chamber: Tenney Engineering Model TTRC, S/N 11717-7 8.___Frequency Counter: HP Model 5385A, S/N 3242A07460 Cal 10/6/99 9.___Peak Power Meter: HP Model 8900C, S/N 2131A00545 Cal 7/19/99 10.___Open Area Test Site #1-3meters Cal. 12/22/99 11.___Signal Generator: HP 8640B, S/N 2308A21464 Cal. 9/23/99 12.___Signal Generator: HP 8614A, S/N 2015A07428 Cal. 5/29/99 13.___Passive Loop Antenna: EMCO Model 6512, 9KHz to 30MHz, S/N 9706-1211 Cal. 6/23/97 14.___Dipole Antenna Kit: Electro-Metrics Model TDA-30/1-4, S/N 153 Cal. 11/24/99 15.___AC Voltmeter: HP Model 400FL, S/N 2213A14499 Cal. 9/21/99 16.___Digital Multimeter: Fluke Model 8012A, S/N 4810047 Cal 9/21/99 17.___Digital Multimeter: Fluke Model 77, S/N 43850817 Cal 9/21/99 18.___Oscilloscope: Tektronix Model 2230, S/N 300572 Cal 9/23/99 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 80oC with a humidity of 76%. APPLICANT: SCIENTIFIC TOYS LTD. FCC ID: BY3E890 REPORT #: T:\CUS\S\SCIENTIF\122ZH0\122ZH0.RPT PAGE: 1 APPLICANT: SCIENTIFIC TOYS LTD. FCC ID: BY3E890 TEST PROCEDURE 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: In the transmit mode the speaker is switched so that it is con- nected to the input of the audio amplifiers Q1, Q4 & Q5 and the output of Q5 drives the transformer T2, which modulates the voltage of the crystal controlled oscillator, Q6. The crystal controlled oscillator is the transmitter. Q6 is connected to the antenna via the output filter made up of C24, C2, & L1. 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. APPLICANT: SCIENTIFIC TOYS LTD. FCC ID: BY3E890 REPORT #: T:\CUS\S\SCIENTIF\122ZH0\122ZH0.RPT PAGE #: 2 APPLICANT: SCIENTIFIC TOYS LTD. FCC ID: BY3E890 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. 49.86 59.30 0.25 10.99 70.54 9.46 V 99.70 26.60 0.80 8.39 35.79 7.71 V 149.60 24.10 0.80 16.90 41.80 1.70 V 199.40 17.30 0.90 12.66 30.86 12.64 V 249.30 17.50 1.20 13.35 32.05 13.95 V 299.20 14.60 1.40 15.65 31.65 14.35 V 349.00 14.70 1.40 15.52 31.62 14.38 V 398.90 12.30 1.40 16.97 30.67 15.33 V 448.70 21.40 1.60 18.12 41.12 4.88 V 498.60 12.10 1.60 19.27 32.97 13.03 V SAMPLE CALCULATION: FSdBuV/m = MR(dBuV) + ACFdB. TEST PROCED…

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