The Genie a Division of Overhead Door WKF99 Garrage Door Remote Control Transmitter User Manual page five to eight

The Genie Company a Division of Overhead Door Corporation Garrage Door Remote Control Transmitter page five to eight

Contents

page five to eight

SUBMITTAL FOR CERTIFICATIONB8Q WKF99A GARAGE DOOR TRANSMITTERFROMThe Genie Company / GMI Holdings Inc.22790 Lake Park Blvd.Alliance, Ohio 44601a wholly owned subsidiary ofOverhead Door CorporationByL.Chop KramerSr. Engineering TechnicianPhone (216) 821-5360Date: Sept 15, 1999Guidelines for this document were derived from the following sections:2.1033 Application for certification15.19 Labeling requirements15.31 Measurement standards15.33 Frequency range for radiated measurements15.35 Emission LimitsSubpart C - Intentional Radiators15.205 Restricted bands of operation15.209 Radiated emission limits, general requirements15.231 Periodic operation within the band40.66 - 40.70 Mhz and above 70 MhzI certify:1) That the enclosed data is an accurate and truthful representation of the productas tested using ANSI 63.4-1992.2) That the device meets all the requirements of 15.205, 15.209, and 15.231.Note: Use View Page Layout and Zoom to view pictures and tables.
2B8Q WKF99TABLE OF CONTENTSTEST EQUIPMENT LIST Page 3TECHNICAL REPORT Page 4INSTRUCTION SHEET Page 5EXPOSITORY STATEMENT Page 9BLOCK DIAGRAM Page 10SCHEMATICS Page 11PHOTOGRAPHS Page 12LABEL Page 17REPORT ON MEASUREMENTS Page 18NOTES ON MEASUREMENTS Page 23
3TEST EQUIPMENT LISTDEVICE MODEL SERIALSignal Generator HP 8644A 2933A00424Spectrum Analyzer HP 8566B 2847A04964Display 2816A15853Quasi-Peak Adapter HP 85650A 2524A00802Amplifier HP 8447D 2443A03986Dipole Set CD “Robert’s” Set 351Horn Antenna Emco 3115 2268Coax (100’) Belden 8214 N/AAmplifier HP8449B 3008A00576All above equipment verified to be within manufactures specifications Sept 15,1999.Site DescriptionLocated at 22790 Lake Park Blvd. Alliance, Ohio. A complete description of the site is onfile with the FCC.
4B8Q WKF99TECHNICAL REPORTMANUFACTURERThe Genie Company / GMI Holdings Inc.22790 Lake Park Blvd.Alliance, Ohio 44601MULTIPLE LISTINGS OF TRANSMITTERSThe Genie Company conducts business under the following trade names:The Genie CompanyThe Alliance Manufacturing CompanyGMI Professional Access SystemsOverhead Door CorporationMODEL TRADE NAMEGWKIC-BL GMI Professional Access SystemsGWKIC-12 GMI Professional Access SystemsOWK-CD Overhead Door Corporation
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9EXPOSITORY STATEMENTTRANSMITTER DESCRIPTIONThe transmitter is a keypad garage door entry system for use with receivers designed byThe Genie Company / GMI Holdings Inc., a wholly owned subsidiary of Overhead DoorCorporation. The transmitter data transmission is a fixed code 10 and 20 Khz data streamwith a 50% duty cycle that is decoded by the receiver. Tables are included to detail datastructure.The circuit consists of the following:• keypad • micro-controller with resonator controlled oscillator at 4 MHz• encoder• RF oscillator (antenna is integral part of the oscillator tank circuit)• 9 volt batteryWhen the user enters the proper code sequence, the encoder modulates an RF carrierwhich is tuned to a frequency of 390 MHz. See the accompanying schematic and blockdiagrams.The back of the transmitter has a label with the required FCC text, along with the FCCidentifier, B8Q WKF99, and the model number. An accompanying drawing exampledetailing the label is provided. The position of the label is shown in the accompanyingphotograph.
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18REPORT ONCERTIFICATION MEASUREMENTSOFB8Q WKF99 DOOR OPERATOR TRANSMITTERPREPARED BY:L.Chop KramerEngineering TechnicianTHE GENIE COMPANY22790 Lake Park Blvd.Alliance, Ohio 44601
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23NOTES ON RADIATED EMISSIONSB8Q WKF99Sept 15,19991) The reported meter readings are the highest levels observed of six positions of the DUTand the antenna for each frequency.2) The Measurements up to 1Ghz were taken using the HP8447D amplifier. Themeasurements above 1Gnhz were taken using the HP 8449B amplifier.3) The reading of -65 dBm is the lowest measurement possible with the equipmentavailable. This level is below the allowed limit in each case.4) Sample calculation: uV/m = 10 (107 + M + AF + CF - G - DC) / 20M = -28.0AF = 2.0 uV/m = 316CF = 2.0G = 27.0DC = 9.05) The actual duty cycle is a function of the transmitted code. The transmitted data has aworst case duty cycle of 50%. This gives the -6dB correction factor in the above equationand in the Radiated Emissions calculations. Using the data times shown in the expository,the correction factor calculation is as follows:correction = 20 * log (25usec/50usec) = -6 dB6) The transmitters were modified to allow continuous transmission.7) The transmitter was surveyed for emissions resulting from the local oscillators. Nomeasurable emissions were present.8) A chart of the data word structure is included figure 1.9) All measurements were made using ANSI 63.4-1992.

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