OFBWS2010TWeather Station - Inside Temperature Sensor

TIMCO ENGINEERING INC. PO Box 370 849 SR 45 Newberry, Florida 32669 Ph. 352.472.5500 Fax. 352.331.8840 [email protected] 11/15/99 TO: Andy Leimer FCC Subject: FCCID: OFBWS2010T REFERENCE: EA 95619 Reference: Radio Control device Attached you will find a plot that shows the silent period of 10.8seconds. Should you need anything else please let me know. Thanks for your help. BEST REGARDS, Sid Sanders CHECK OUT OUR WEBSITE @www.timcoengr.com

TABLE OF CONTENTS APPLICANT: EUROPE SUPPLIES LTD. FCC ID: OFBWS2010T TEST REPORT CONTAINING: PAGE 1.............TEST PROCEDURE PAGE 2.............CIRCUIT DESCRIPTION & TEST PROCEDURE PAGE 3.............RADIATION INTERFERENCE TEST DATA PAGE 4.............CALCULATION OF DUTY CYCLE PAGE 5.............OCCUPIED BANDWIDTH EXHIBIT ATTACHMENTS: EXHIBIT 1...........POWER OF ATTORNEY LETTER EXHIBIT 2...........BLOCK DIAGRAM EXHIBIT 3...........SCHEMATIC - RF PORTION EXHIBIT 4...........SCHEMATIC - LOGIC EXHIBIT 5...........PARTS LIST EXHIBIT 6...........INSTRUCTION MANUAL EXHIBIT 7...........FCC ID LABEL SAMPLE EXHIBIT 8...........SKETCH OF FCC ID LABEL LOCATION EXHIBIT 9-12........DUTY CYCLE PLOTS EXHIBIT 13..........PERIDIOC RATE PLOT EXHIBIT 14..........OCCUPIED BANDWIDTH PLOT EXHIBIT 15..........FRONT VIEW EXTERNAL PHOTO EXHIBIT 16..........REAR VIEW EXTERNAL PHOTO EXHIBIT 17..........COMPONENT SIDE INTERNAL PHOTO EXHIBIT 18..........COPPER SIDE INTERNAL PHOTO APPLICANT: EUROPE SUPPLIES LTD. FCC ID: OFBWS2010T REPORT #: T:\CUS\E\ESL\357A9\ESL357A9.RPT PAGE: TABLE OF CONTENTS LIST APPLICANT: EUROPE SUPPLIES LTD. FCC ID: OFBWS2010T TEST EQUIPMENT LIST 1. Spectrum Analyzer: Hewlett Packard 8566B - Opt 462, w/ preselector 85685A, & Quasi-Peak Adapter HP 8565OA, & HP 8449B - OPT H02 Cal. 7/6/99 2. Signal Generator, Hewlett Packard 8640B, cal. 9/23/99 3. Signal Generator, HP 8614A Serial No.2015A07428 cal. 5/27/99 3. Eaton Biconnical Antenna Model 94455-1 20-200 MHz Serial No. 0997 Cal. 10/30/98 4. Electro-Metric Dipole Kit, 20-1000 MHz, Model TDA-30 10/31/98 5. Electro-Metric Horn 1-18 GHz, Model RGA-180, Cal. 4/27/99 6. Electro-Metric Antennas Model TDA-30/1-4,Cal. 10/15/98 7. Electro-Metric Line Impedance Stabilization Network Model No. EM-7821, Serial No. 101; 100KHz-30MHz 50uH. Cal.11/19/98 8. Electro-Metric Line Impedance Stabilization Network Model No. EM-7820, Serial No. 2682; 10KHz-30MHz 50uH. Cal. 11/19/98 9. Special low loss cable was used above 1 GHz 10. Tenney Temperature Chamber 11. AC Voltmeter, HP 400FL, Serial No 2213A14499. Cal. 9/21/99 12. Digital Multimeter, Fluke 8010A/12A, Serial No. 4810047. Cal 9/21/99 13. Digital Multimeter, Fluke 77, Serial No. 43850817. Cal 9/21/99 14. Oscilloscope, Tektronix 2230, Serial No. 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 98.3oF with a humidity of 40%. 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 APPLICANT: EUROPE SUPPLIES LTD. FCC ID: OFBWS2010T REPORT #: T:\CUS\E\ESL\357A9\ESL357A9.RPT PAGE #: 1 TEST PROCEDURES CONTD. ANSI STANDARD C63.4-1992 10.1.7 MEASUREMENT PROCEDURES: The UUT was placed on a table 80 cm high and with dimensions of 1m by 1.5m. The UUT was placed in the center of the table. The table used for radiat- ed measurements is capable of continuous rotation. The spectrum was scanned from 30 MHz to 10th harmonic of the fundamental. Peak readings were taken in three (3) orthogonal planes and the high- est readings were converted to average readings based on the duration of "ON" time. Measurements were made by TIMCO ENGINEERING INC. at the registered open field test site located at 6051 N.W. 19th Lane, Gainesville, Fl 32605. 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. RULES:2.1033(b)(4) CIRCUIT DESCRIPTION This unit is a low power security device transmitter. The oscil- lator is a SAW oscillator formed by the transistor T1. The output of T1 is coupled through C10 to the output transisitor t2. The output of T2 is fed through a two stage filted made up of L4(antenna), C3, C13, c12, L3, and L2. The inductor,L4) is printed on the PCB. The digital code is provided by the integrated circuit IC1. The unit is completely self contained and is powered by two AA 1.5Volt batteries. The calcu- lations are shown in the report and the duty cycle was 41.0%. ANTENNA & GROUND: This unit uses the PCB inductor as the antenna. There is no provision for an external antenna. APPLICANT: EUROPE SUPPLIES LTD. FCC ID: OFBWS2010T REPORT #: T:\CUS\E\ESL\357A9\ESL357A9.RPT PAGE #: 2 APPLICANT: EUROPE SUPPLIES LTD. FCC ID: OFBWS2010T NAME OF TEST: RADIATION INTERFERENCE RULES PART NO.: 15.231(e) REQUIREMENTS: Fundamental Field Strength Field Strength of Frequency of Fundamental Harmonics and Spurious MHz dBuV Emissions (dBuV/m @ 3m) 40.66 to 40.70 54.00 34.00 70 to 130 54.00 34 130 to 174 54.00 to 63.50 34.00 to 43.50 174 to 260 63.50 43.50 260 to 470 63.60 to 74.00 43.50 to 54.00 470 and above 74.00 54.00 THE LIMIT FOR AVERAGE FIELD STRENGTH dBuV/m FOR THE FUNDAMENTAL FREQUENCY= 72.87 dBuV/m dBuV/m. NO FUNDAMENTAL IS ALLOWED IN THE RESTRICTED BANDS. THE LIMIT FOR AVERAGE FIELD STRENGTH dBuV/m FOR THE HARMONICS AND SPURIOUS FREQUENCIES = 54.00 dBuV/m dBuV/m. SPURIOUS IN THE RESTRICTED BANDS MUST BE LESS THAN 54dBuV/m OR 15.209. TEST DATA: PEAK AVERAGE EMISSION METER COAX FIELD FIELD FREQ. READING LOSS ACF STRNGTH STRNGTH MARGIN MHz @ 3m dBuV dB dB dBuV/m …

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