PEQ672440305433MHz RF Transmitter

Atomic Clock With Wireless Outdoor and Indoor Temperature Instruction Manual Size: 130mm(W) x 182mm(H) Model M024 (8733+6724) 8pages P.1 MONTHDATEDAYOUTDOORINDOOR PM WA OR CA NV UT ID AZ NM CO WY MT ND SD NE KS OK TX MN MI IA MO AR LA WI IL TN KY IN OH MS AL GA FL SC NC VA WV PA NY ME MA RI CT NJ DE MD NH VT MI Eastern Standard Time Central Standard Time Mountain Standard Time Pacific Standard Time Fort Collins 2000 miles 1200 miles The ATOMIC Clock With the Atomic Clock, you have the most accurate timepiece within the continent. It can receive the time signal transmitted by the National Institute of Standards and Technology (NIST), which is regulated by 3 atomic clocks and deviates less than 1 second within 3,000 years. The NIST broadcasts the time signal (WWVB, 60kHz) continuously from Fort Collins, Colorado. This signal can be received anywhere in the continental USA that long wave (AM) radio reception is possible with a portable radio. It is expected that the signal can cover a distance of over 2,000 miles from the transmitter. Therefore, your clock will receive the signal within the broadcast range anywhere an AM signal can be received; generally the signal cannot be picked up in massive metal and concrete structures unless near a window. In addition, some environmental effects (see next page) may affect the transmitting distance. For more information, please study the WWVB WEB page of NIST at: http://www.boulder.nist.gov/timefreq/ P.2 Inside or near concrete/ steel buildings or structures, unless the clock is close/ next to a window (with curtain open). Too close to household appliances (Computer, TV, video/audios, fax machines, speakers). Near construction sites, traffic lights, roadside, neon lights etc. Inside moving vehicles (automobile, train, airplanes etc) which radio transmission or electronics will interfere the reception of atomic clock. Next or close to power station. Environmental Reception effects: The Atomic Clock obtains the accurate time with wireless technology. Same as all wireless devices, the receiving ability may be affected by, but not limited to, the following circumstances: • Long transmitting distance. • Nearby mountains and valleys. • Among tall buildings. • Near railway, high voltage cable. etc. • Near freeway, airport, etc. • Near construction site. • Inside concrete buildings. • Near electrical appliances. • Near computers and televisions. • Bad weather locally or electrical storms between you and Colorado. • inside moving vehicles. • Nearby metallic structures. Location Precautions This clock receives a radio wave much like a TV or radio. Be sure to locate it near a window or some other locations where reception is good. Avoid the following location,which can intertere with proper reception. Synchronization signal reception can be received in Continental USA only. In other areas, you can still use this clock by making time settings manually. P.3 Close to or on top of metal surfaces / plates. P.4 Features • Receives 60kHz WWVB signal. • Automatic time and date adjustment after signal reception. • Calendar with day of the week display from January 1, 2000 to December 31, 2097. • Hour, minute and second display. • 12 or 24-hour format. • Time accuracy (U.S. Atomic clock): better than 1 second in 3,000 years. • Time accuracy (free run): +/- 30 seconds per month. • Indoor temperature and remote temperature. • Centigrade or Fahrenheit readout. • Battery life : approximate 1 year with alkaline batteries (not included). • Clock operating temperature from 0∞C to 50∞C (32∞F to 122∞F) • Indoor, Outdoor Temperature measuring range from -20∞C to 60∞C (-4∞F to 140∞F)* • Temperature resolution 0.1∞C. *If using the wireless transmitter with temperatures below 32∞F or above 122∞F, users are recommended to use Lithium battery to enhance battery life. Also, the LCD readout on the wireless transmitter will be blurred when operation takes place with extreme temperature conditions. The LCD readout will resume the normal display when placed at room temperature for 1-2 hours. Location of Controls: Wireless Transmitter Clock Time Indoor Temperature Outdoor Temperature Hour/ Month Minute/ Date 12/24HR/ Year Calendar/ Time Set/ Lock PST/MST/ CST/EST ∞C/∞F Battery Door Foldable Stand DST ON/OFF RESET WAVE RE-SYNC Month/ Date/Day MONTHDATEDAYOUTDOORINDOOR PM MIN12/24HR HR TIME SET LOCK PST MSTCST EST DST ONOFF C F RESETRE-SYNC WAVE CSTESTMSTPST PACIFIC STANDARD TIME MOUNTAIN STANDARD TIME CENTRAL STANDARD TIME EASTERN STANDARD TIME FCC ID : PEQ873390303 This device complies with Part 15 of the FCC Rules.Operation is subject to the following two conditions: (1) this device may not ca- use harmful interference,and (2) this device must accept any inte rference received,including interference that may cause undesired operation. - RESET P.5 Getting Started Batteries Installation Batteries installation of the clock • Open the battery cover of the main unit. • Insert 2 "AA" batteries in polarity (+) and (-) as indicated. • Close the battery cover • The low battery icon will show in the indoor temperature window when your batteries need replacing. Batteries installation of wireless transmitter • Open the battery compartment door. • Insert 2 "AA" size batteries in proper polarity (+) and (-) as indicated. • Close the battery door. • The low battery icon will show in the wireless transmitter LCD when your batteries need replacing. Warning: Do not mix old and new batteries. Do not mix alkaline, standard (carbon-zinc), or rechargeable (nickel cadmium) batteries. The low battery icon in the outdoor temperature window of the clock indicates a weak or no signal reception from the wireless transmitter. Atomic clock with wireless outdoor temperature consists of the clock and a wireless temperature transmitter. To ensure proper functioning of your atomic clock with outdoor temperature, please follow this power up procedure: 1. Insert new batteries into the main unit. 2. Insert batteries into the re…

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Block Diagram of 6724 / 6725 ( Tx ) Power System Frequency System Frequency 433.9MHz (ii) 32.768kHz (i) Raw Data RF Part Base Band (i) The 32.768kHz is the MCU clock frequency for normal operation. (ii) The 433.9MHz is the output of the RF circuit Antenna Matching network MCU IC: TM6814 SAW stabilized Colpitts Oscillator Thermo sensor Key Matrix LCD

Test Setup FCC ID : PEQ672440305 Model: 6724 External Photo - Front External Photo - Rear Test Setup FCC ID : PEQ672440305 Model: 6725 External Photo - Front External Photo - Rear

Test Setup FCC ID : PEQ672440305 Internal Photo - 1 Internal Photo - 2 Test Setup FCC ID : PEQ672440305 Internal Photo - 3 Internal Photo – 4 Test Setup FCC ID : PEQ672440305 Internal Photo - 5 Internal Photo - 6 Test Setup FCC ID : PEQ672440305 Internal Photo - 7 Internal Photo - 8 Model: 6724 (Left) and Model: 6725 (Right)

Technical Description of the Circuit: The circuit is a RF thermometer transmitter part, the MCU TM6814 will measure the temperature and code the data. Afterward, the data is transferred to the RF circuit which is a SAW stabilized Colpitts Oscillator ( Constructed by Q1, L1, L2, C1, C2, C3, C4, C5, R1, R3 and X1 ) every 3 minutes, when the Data pin output HIGH level to the oscillator, the oscillator is turned on and output 433.9 2MHz RF signal, when the Data pin output LOW level to the oscillator, the oscillator is turned off and this ON & OFF process modulate the code data into 433.9 2MHz with ON OFF KEYING.. Also there is an antenna matching network ( Constructed by C7, C8, L3 and L4 ) after the SAW stabilized Colpitts Oscillator, this network suppress harmonic and spurious also match the Oscillator to the antenna.

X1 : 433.92MHz Q1 : 2SC3356

• The test results reported in this test report shall refer only to the sample actually tested and shall not refer or be deemed to refer to bulk from which such a sample may be said to have been obtained. • This report shall not be reproduced except in full without prior authorization from Intertek Testing Services Hong Kong Limited. • For Terms And Conditions of the services, it can be provided upon request. • The evaluation data of the report will be kept for 3 years from the date of issuance. Intertek Testing Services Hong Kong Ltd. 2/F., Garment Centre, 576 Castle Peak Road, Kowloon, Hong Kong. Tel: (852) 2173 8888 Fax: (852) 2371 0521 Website: www.hk.intertek-etlsemko.com Electronics Tomorrow Ltd. Application For Certification (FCC ID: PEQ672440305) Transmitter 0506271 DL/ Sandy Lee August 31, 2005 INTERTEK TESTING SERVICES FCC ID: PEQ672440305 i LIST OF EXHIBITS INTRODUCTION EXHIBIT 1: General Description EXHIBIT 2: System Test Configuration EXHIBIT 3: Emission Results EXHIBIT 4: Equipment Photographs EXHIBIT 5: Product Labelling EXHIBIT 6: Technical Specifications EXHIBIT 7: Instruction Manual EXHIBIT 8: Miscellaneous Information INTERTEK TESTING SERVICES FCC ID: PEQ672440305 ii MEASUREMENT/TECHNICAL REPORT Electronics Tomorrow Ltd. - MODEL: Electronics Tomorrow Ltd. 6724 Electronics Tomorrow Ltd. 6725 FCC ID: PEQ672440305 August 31, 2005 This report concerns (check one:) Original Grant X Class II Change Equipment Type: Low Power Transmitter (example: computer, printer, modem, etc.) Deferred grant requested per 47 CFR 0.457(d)(1)(ii)? Yes No X If yes, defer until: date Company Name agrees to notify the Commission by: date of the intended date of announcement of the product so that the grant can be issued on that date. Transition Rules Request per 15.37? Yes No X If no, assumed Part 15, Subpart C for intentional radiator - the new 47 CFR [10-01-04 Edition] provision. Report prepared by: Derek Leung Intertek Testing Services 2/F., Garment Center, 576, Castle Peak Road, Kowloon, Hong Kong. Phone: 852-2173-8539 Fax: 852-2371-0521 INTERTEK TESTING SERVICES FCC ID: PEQ672440305 iii Table of Contents 1.0 General Description..............................................................................................2 1.1 Product Description ..............................................................................................2 1.2 Related Submittal(s) Grants .................................................................................2 1.3 Test Methodology.................................................................................................3 1.4 Test Facility ..........................................................................................................3 2.0 System Test Configuration ...................................................................................5 2.1 Justification ..........................................................................................................5 2.2 EUT Exercising Software .....................................................................................5 2.3 Special Accessories .............................................................................................5 2.4 Equipment Modification ........................................................................................6 2.5 Measurement Uncertainty ....................................................................................6 2.6 Support Equipment List and Description ..............................................................6 3.0 Emission Results ..................................................................................................8 3.1 Field Strength Calculation ....................................................................................9 3.2 Radiated Emission Configuration Photograph ....................................................11 3.3 Radiated Emission Data.....................................................................................12 4.0 Equipment Photographs .....................................................................................16 5.0 Product Labelling ................................................................................................18 6.0 Technical Specifications ....................................................................................20 7.0 Instruction Manual ..............................................................................................22 8.0 Miscellaneous Information .................................................................................24 8.1 Measured Bandwidth .........................................................................................25 8.2 Discussion of Pulse Desensitization ...................................................................26 8.3 Calculation of Average Factor ............................................................................27 8.4 Emissions Test Procedures................................................................................28 INTERTEK TESTING SERVICES FCC ID: PEQ672440305 iv List of attached file Exhibit type File Description filename Test Report Test Report report.pdf Operation Description Technical Description descri.pdf Test Setup Photo Radiated Emission radiated photos.doc Test Report Bandwidth Plot bw.pdf External Photo External Photo external photos.doc Internal Photo Internal Photo internal photos.doc Block Diagram Block Diagram block.pdf Schematics Circuit Diagram circuit.pdf ID Label/Location Label Artwork and Location label.pdf User Manual User Manual manual.pdf Test Report Timing Diagram timing.pdf INTERTEK TESTING SERVICES FCC ID: PEQ672440305 1 EXHIBIT 1 GENERAL DESCRIPTION INTERTEK TESTING SERVICES FCC ID: PEQ672440305 2 1.0 General Description 1.1 Product Description The Equipment Under Test (EUT) is a Transmitter operating at 433.92MHz. The EUT is powered by 3V d.c. (2 x 1.5V “AA” battery). It transmits temperature signal to corresponding receiver and t…

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Test Setup FCC ID : PEQ672440305 Radiated Photo - Front Radiated Photo - Rear