O2X2050A49 MHz Remote Control Transmitter

APPLICANT: GOLDEN BRIGHT MANUFACTURER LTD. FCC ID: O2X2050A Circuit Description Q1 the 49.86 MHz crystal oscillator drives the base of Q2 the final/ buffer amplifier. Summed into the same base (Q2) is the modulation provided by IC1. The output of Q2 has the matching network consist ing of L1, L2, C1, and C2 that limit the harmonic content and effect the proper coupling of the antenna to the output stage. Antenna, Ground, and Power Source The antenna consists of a 45cm long telescoping chrome over brass tubing. There is no external ground connection. The ground is only that of the printed circuit board. Electric current is supplied by a 9 Volt primary storage cell. GOLDEN BRIGHT MANUFACTURER LTD. FCC ID: O2X2050A JOB #: 371AH0 EXHIBIT #: 12

TABLE OF CONTENTS LIST APPLICANT: GOLDEN BRIGHT MANUFACTURER LTD. FCC ID: O2X2050A TEST REPORT CONTAINING: PAGE 1......TEST EQUIPMENT LIST AND TEST PROCEDURE PAGE 2......TEST PROCEDURE CONTD. PAGE 3......RADIATION INTERFERENCE TEST DATA PAGE 4......OCCUPIED BANDWIDTH TEST DATA EXHIBITS CONTAINING: EXHIBIT 1............BLOCK DIAGRAM EXHIBIT 2............SCHEMATIC EXHIBIT 3A-3B........INSTRUCTION MANUAL EXHIBIT 4............SAMPLE OF FCC ID LABEL EXHIBIT 5............LOCATION OF FCC ID LABEL EXHIBIT 6............TEST SETUP PHOTO EXHIBIT 7............EXTERNAL PHOTO - FRONT SIDE EXHIBIT 8............EXTERNAL PHOTO - BACK SIDE EXHIBIT 9............INTERNAL PHOTO - COMPONENT SIDE EXHIBIT 10...........INTERNAL PHOTO - COPPER SIDE EXHIBIT 11...........OCCUPIED BANDWIDTH PLOT EXHIBIT 12...........CIRCUIT DESCRIPTION APPLICANT: GOLDEN BRIGHT MANUFACTURER LTD. FCC ID: O2X2050A REPORT #: T:\CUS\G\GOLDEN\371AH0\371AH0RPT.doc PAGE: TABLE OF CONTENTS LIST APPLICANT: GOLDEN BRIGHT MANUFACTURER LTD. FCC ID: O2X2050A 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.___Biconnical Antenna: Electro-Metrics Model BIA-25, S/N 1171 4._X_Log-Periodic Antenna: Electro-Metrics Model EM-6950, S/N 632 5.___Log-Periodic Antenna: Electro-Metrics Model LPA-30, S/N 409 6.___Double-Ridged Horn Antenna: Electro-Metrics Model RGA-180, 1-18 GHz, S/N 2319 7.___18-26.3GHz Systron Donner Standard Gain Horn #DBE-520-20 8.___Horn 40-60GHz: ATM Part #19-443-6R 9.___Line Impedance Stabilization Network: Electro-Metrics Model ANS-25/2, S/N 2604 Cal. 2/9/00 10.___Temperature Chamber: Tenney Engineering Model TTRC, S/N 11717-7 11.___Frequency Counter: HP Model 5385A, S/N 3242A07460 Cal 10/6/99 12.___Peak Power Meter: HP Model 8900C, S/N 2131A00545 13._X_Open Area Test Site #1-3meters Cal. 12/22/99 14.___Signal Generator: HP 8640B, S/N 2308A21464 Cal. 9/23/99 15.___Signal Generator: HP 8614A, S/N 2015A07428 16.___Passive Loop Antenna: EMCO Model 6512, 9KHz to 30MHz, S/N 9706-1211 Cal. 6/10/00 17.___Dipole Antenna Kit: Electro-Metrics Model TDA-30/1-4, S/N 153 Cal. 11/24/99 18.___AC Voltmeter: HP Model 400FL, S/N 2213A14499 Cal. 9/21/99 19.___Digital Multimeter: Fluke Model 8012A, S/N 4810047 Cal 9/21/99 20.___Digital Multimeter: Fluke Model 77, S/N 43850817 Cal 9/21/99 21.___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: GOLDEN BRIGHT MANUFACTURER LTD. FCC ID: O2X2050A REPORT #: T:\CUS\G\GOLDEN\371AH0\371AH0RPT.doc PAGE: 1 APPLICANT: GOLDEN BRIGHT MANUFACTURER LTD. FCC ID: O2X2050A 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. APPLICANT: GOLDEN BRIGHT MANUFACTURER LTD. FCC ID: O2X2050A REPORT #: T:\CUS\G\GOLDEN\371AH0\371AH0RPT.doc PAGE: 2 APPLICANT: GOLDEN BRIGHT MANUFACTURER LTD. FCC ID: O2X2050A 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 67.00 0.25 10.99 78.24 1.76 V 99.70 15.00 0.80 8.39 24.19 19.31 V 149.60 11.90 0.80 16.90 29.60 13.90 V 199.40 23.30 0.90 12.66 36.86 6.64 V 249.30 26.20 1.20 13.35 40.75 5.25 V 349.00 7.30 1.40 15.52 24.22 21.78 V 398.90 7.50 1.40 16.97 25.87 20.13 V 448.70 10.90 1.60 18.12 30.62 15.38 V 498.60 8.00 1.60 19.27 28.87 17.13 V SAMPLE CALCULATION: FSdBuV/m = MR(dBuV) + ACFdB. TEST PROCEDURE: The procedure used was ANSI STANDARD C63.4-1992. The spectrum was scanned from 30 MHz to 1000 MHz. When an emission was found, the table was rotated to produce the maximum signal strength. The antenna was placed in both the horizontal and vertical planes and the worse case emissions were reported. The UUT was tested in 3 orthogonal planes. TEST RESULTS: THE UNIT DOES MEET THE FCC REQUIREMENTS. PERFORMED BY: MARIO R. de ARANZETA DATE: SEPTEMBER 14, 2000 APPLICANT: GOLDEN BRIGHT MANUFACTURER LTD. FCC ID: O2X2050A REPORT #: T:\CUS\G\…

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