O2ATX-1AMC TR-1 Remote Control Transmitter

NATIONAL CERTIFICATION LABORATORY 8370 Court Avenue, Suite B-1 Ellicott City MD 21043 (410) 461-5548 FCC REPORT OF RADIO INTERFERENCE for Advanced Materials Corp. 700 Technology Drive Pittsburgh, PA 15230 FCC ID: O2ATX-1 March 9, 2000 TABLE OF CONTENTS Application Form 731 Label Format 1.0 Introduction 1.1 Summary 2.0 Description of Equipment Under Test (EUT) 3.0 Test Configuration 4.0 Conducted Emissions Scheme 5.0 Radiated Emissions Scheme TABLES Table 1.Support Equipment Table 2. Measurement Equipment EXHIBITS Exhibit 1.EUT Photographs Exhibit 2.Schematics Exhibit 3. User Manual NCL PROJ.# AMC-536TX FCC ID #: O2ATX-1 2 1.0 Introduction This report has been prepared on behalf of Advanced Materials Corp., to support the attached Application for Certification of a Part 15 Intentional Radiator. The Equipment Under Test was the Advanced Materials Corp. TX-1 Transmitter. Radio-Noise Emissions tests were performed according to ANSI C63.4-1992 "Methods of Measurement of RFI from Low-Voltage Electronic Equipment in the Range of 9 KHz - 40 GHz". The measuring equipment conforms to ANSI C63.2 Specifications for Electromagnetic Noise and Field Strength Instrumentation. Testing was performed at National Certification Laboratory in Ellicott City, MD. Site description and site attenuation data have been placed on file with the FCC's Sampling and Measurements Branch. FCC acceptance was granted on May 26, 1993. 1.1 Summary The TX-1 Transmitter complies with the Part 15.231 Radio Limits for periodic operation above 70 MHz of an Intentional Radiator. 2.0 Description of Equipment Under Test (EUT) The EUT Features: FEATURES FREQUENCY Whip Antenna 433.92 MHz Crystal Stable Pulsed Code Modulated FCC ID #: O2ATX-1 2 Manual Keying - 1 sec. Timed Off Battery Operation 3.0 Test Configuration The EUT was setup on the test table in a manner which follows the general guidelines of ANSI C63.4, Section 6 "General Operating Conditions and Configurations" . Once the Start or Stop buttons are pressed, the transmission is on for a 1 second period before automatically timed off. Tests were performed by repeated depressing of the buttons. The EUT was configured in 3 orthogonal positions to determine the maximum RF level at each emission frequency. The data tables give the EUT postion designation that produces worst-case field strength, in an X, Y, Z system. This is described below: FCC ID #: O2ATX-1 3 4.0 Conducted Emissions Scheme The EUT is powered by battery only. 5.0 Radiated Emissions Scheme The EUT was initially scanned in the frequency range 30 to 4340 MHz indoors, at a distance of 1 meter to determine its emissions profile. The EUT was then placed on an 80 cm high 1 X 1.5 meter non-conductive motorized turntable for radiated testing on the 3- meter open area test site. The emissions from the EUT are measured continuously at every azimuth by rotating the turntable. Waveguide horn and log periodic broadband antennas are mounted on an antenna mast to determine the height of maximum emissions. The height of the antenna is varied between 1 and 4 meters. Both the horizontal and vertical field components are measured. The output from the antenna is connected to the input of the spectrum analyzer. The detector function is set to Peak. The resolution bandwidth of the spectrum analyzer system is set at 120 kHz, for measurements in the range 30 MHz -1 GHz, and 1 MHz for measurements in the range of 1 - 4 GHz, with all post-detector filtering no less than 10 times the resolution bandwidth. All emissions within 20 dB of the limit are recorded in the data tables. To convert the spectrum analyzer reading into a quantified E-field level to allow comparison with the FCC limits, it is necessary to account for various calibration factors. These factors include cable loss (CL) and antenna factors (AF). The AF/CL in dB/m is algebraically added to the Spectrum Analyzer Voltage in db μ V to obtain the Radiated Electric Field in dB μ V/m. This level is then FCC ID #: O2ATX-1 4 compared with the FCC limit. Example: Spectrum Analyzer Volt: VdBuV Composite Factor: AF/CLdB/m Electric Field: EdB μ V/m = VdB μ V + AF/CLdB/m Linear Conversion: EuV/m = Antilog (EdB μ V/m/20) FCC ID #: O2ATX-1 5 FCC RADIATED EMISSIONS DATA CLIENT:AMC EUT:TX-1 FREQ.:433.92 MHZ 3-METER TESTPEAKAVRG AVRG FREQPOL SPEC A AF/CLAMPAVG.E-FIELDLIMIT MRGN MHz ANT EUTdBuVdB/mGAIN FACTORdBuV/mdBuV/mdB 433.92 H X62.017.00-3.076.081.0-5.0 867.84 V Y47.024.0-30-3.038.061.0-23.0 1301.76 V Y45.026.0-30-3.038.054.0-16.0 1735.68 V Y41.029.0-30-3.037.061.0-24.0 2169.60 H X34.032.0-30-3.033.061.0-28.0 2603.52 V Y37.034.0-30-3.038.061.0-23.0 3037.44 H X32.036.0-30-3.035.061.0-26.0 3471.36 V Y30.036.0-30-3.033.061.0-28.0 3905.28 H Z33.037.0-30-3.037.054.0-17.0 4339.20 V Y32.038.0-30-3.037.054.0-17.0 Test Engineer: Steven Dayhoff Peak Radiated Level FCC ID #: O2ATX-1 6 Average Field Strength Calculation: The following spectrum analyzer plot reveals the maximum pulsed on/off duty cycle of the modulated carrier. A plot showing a 100 ms frame is given. The plot demonstrates clearly that the duty cycle is near 70 %. The average electric field level can thus be calculated as follows: Linear: Avg. FS(uV/m) = Peak FS(uV/m) * 0.70 Logarithmic: Avg. FS(dBuV/m) = Peak FS(dBuV/m) - 3 dB 100 ms Frame – 10 ms/Div FCC ID #: O2ATX-1 7 FCC ID #: O2ATX-1 8 Bandwidth Measurement: The following plots include a graph of the modulated carrier which demonstrates the Bandwidth at a 20 dB point down from peak. Section 15.231(c) limits the Bandwidth to 0.25% of the center frequency: BW Limit = .0025 * 434 MHz = 1085 KHz Measured BW = 20 kHz Bandwidth Plot – Res BW: 3 kHz / Span: 50 kHz FCC ID #: O2ATX-1 9 Table 1 Support Equipment MANUFACTURER FCC ID # SERIAL # None N/A None FCC ID #: O2ATX-1 10 Table 2 Measurement Equipment Used The following equipment is used to perform measurements: EQUIPMENT SERIAL NUMBER Wavetek 2410A 1100 MHz Signal Generator 1362016 HP Model 8449B Preamplifier 12A533-A EMCO Model 3146 Lo…

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