MRXGME433RX2Automotive Receiver

Re: Certification for Schrader Receiver Models: 12802431,13129153,13139107,13172984 FCC ID: MRXGME433RX2 IC: 2546A-GME433RX USER'S MANUAL INFORMATION (PRELIMINARY) The User's Manual is in preparation. The following material will be contained in the manual: FCC ID: MRXGME433RX2 IC: 2546A-GME433RX This device complies with Part 15 of the FCC Rules and with RSS-210 of Industry Canada. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. WARNING: Changes or modifications not expressively approved by the party responsible for compliance could void the user's authority to operate the equipment. The term “IC:” before the radio certification number only signifies that Industry Canada technical specifications were met.

Re: Certification for Schrader Receiver Models: 12802431,13129153,13139107,13172984 FCC ID: MRXGME433RX2 IC: 2546A-GME433RX POWER OF ATTORNEY A letter granting Valdis V. Liepa the Power of Attorney is on file and can be provided when so requested. Re: Certification for Schrader Receiver Models: 12802431,13129153,13139107,13172984 FCC ID: MRXGME433RX2 IC: 2546A-GME433RX REQUEST FOR CONFIDENTIALITY Pursuant to 47 CRF 0.459, Schrader requests that a part of the subject application be held confidential. This comprises Exhibits (5) Schematics (10) Parts List (Part of Exhibit only) Schrader has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. If there are any questions regarding this request, please contact me at the above address or call 734-483-4211, fax 734-647-2106 or e-mail [email protected]. Sincerely, Valdis V. Liepa Research Scientist University of Michigan June 26, 2003 Re: Certification for Schrader Receiver Models: 12802431,13129153,13139107,13172984 FCC ID: MRXGME433RX2 IC: 2546A-GME433RX STATEMENT OF MODIFICATIONS There were no modifications made to the DUT by this test laboratory. (Also see Section 3.1 of the attached Test Report). _____________________ Valdis V. Liepa Research Scientist Re: Certification for Schrader Receiver Models: 12802431,13129153,13139107,13172984 FCC ID: MRXGME433RX2 IC: 2546A-GME433RX GENERAL PRODUCT INFORMATION The device, for which certification is pursued, has been designed by: Schrader Electronics Limited 11 Technology Park, Belfast Road Antrim BT41 1QS, Northern Ireland Jim Newport Tel: 011-44-2894-48-2066 Fax: 011-44-1849-46-8440 It will be manufactured by: Schrader Electronics Limited 11 Technology Park, Belfast Road Antrim BT41 1QS, Northern Ireland Jim Newport Tel: 011-44-2894-48-2066 Fax: 011-44-1849-46-8440 Canadian Contact: Gates Rubber Company, 3303 St. Etienne Boulevard, Windsor, Ontario. N8W 5B1 Canada Rick Gatti - 313 962 1711

1.2 Receiver Block Diagram Note: The RF detectors are external to the receiver. Ter.15 GND RF Circuit with Peak Detector To CAN bus LR Corner LF Corner RF Corner RR Corner Microcontroller with CAN Fujitsu MB90F387 RF Detector RF Detector CAN Transceiver Philips AU5790 Power line Voltage Regulator EEPROM RF Detector RF Detector 4MHz 6.6128MHz

June 26, 2003 American Telecommunications Certification Body, Inc. 6731 Whittier Avenue Suite C110 McLean, VA 22101 RE: Certification Application FCC ID: MRXGME433RX2 Please find enclosed application materials for certification of Schrader 12802431, 13129153, 13139107, 13172984 Receiver. Note: 1) portions of this submittal are filed Confidential 2) a list of the modifications made is provided in Attestations. If there are any questions regarding the application or testing performed, please contact me at the above address or call 734-483-4211, fax 734-647-2106, or e-mail [email protected]. Sincerely, Valdis V. Liepa Research Scientist

June 26, 2003 Federal Communications Commission Equipment Approval Services P.O. Box 358315 Pittsburgh, PA 15251-5315 Re: Certification for Schrader Receiver Models: 12802431,13129153,13139107,13172984 FCC ID: MRXGME433RX2 IC: 2546A-GME433RX Please find enclosed application materials for certification of Schrader 12802431, 13129153, 13139107, 13172984 Receiver. We tested it and found it to comply with FCC Part 15. If there are any questions regarding the application or testing performed, please contact me at the above address or call 734-483-4211, fax 734-647-2106, or e-mail [email protected]. Sincerely, Valdis V. Liepa Research Scientist June 26, 2003 Certification and Engineering Bureau Industry Canada 3701 Carling Avenue, Bldg. 94 Ottawa, Ontario K2H 8S2 Re: Certification for Schrader Receiver Models: 12802431,13129153,13139107,13172984 FCC ID: MRXGME433RX2 IC: 2546A-GME433RX Please find enclosed application materials for certification of Schrader 12802431, 13129153, 13139107, 13172984 Receiver. We tested the device and found it to comply with RSS-210. The product is identified by: IC: 2546A-GME433RX If there are any questions, suggestions, etc., regarding the application or testing performed, please contact me at the above address or call 734-483-4211, fax 734-647- 2106; e-mail: [email protected]. Sincerely, Valdis V. Liepa Research Scientist

1.1 Overview A system has been developed to monitor a vehicle’s tyre pressures whilst the vehicle is in transit. This system has been specifically designed to offer automatic wheel rotation, a feature that allows the vehicle’s wheels to be repositioned on the vehicle without the need to retrain the system receiver with the new location of the wheel sensors. This system has also been specifically designed to allow full communication to the vehicle ECU via the CAN bus. Four wheel pressure sensors communicate pressure data via RF to a receiver / ECU mounted in the trunk of the vehicle. The purpose of this document is to provide the contents of the software of the TPMS receiver / ECU. 1.3 Communications Interfaces The TPMS receiver / ECU communicates with the vehicle’s ECU via the CAN bus, receives ID and pressure data from the TPMS wheel mounted pressure transmitters and sensor position data from the system’s RF detectors (RFDs). A single bi-directional line is used for communications with the CAN bus. Data is passed along this line in serial digital format. Pressure Data is received from the wheel sensors via radio signals. 1.3.1.1 ECU Connector For the ECU the following connector shall be used: AMP ZF 12-9 1.3.1.2 Pin Out of the ECU The table below gives a survey of the I/O pins and the associated functions. The pins are identified on the Rx’s connector (1/6/7/12 in the appropriate corner) * If due to the trunk location the onboard Antenna of the ECU will not be sufficient for data receiving, than an external antenna shall be used. 1.3.1.3 Connector of the RF-Detector For the RF detector the following connector shall be used: ZWF 2-128 Pin Signal 1 CANS_A 2 CAN_Spare_Pin 3 Terminal 15 4 Terminal 31, battery ground 5 Left Rear RF Detector – Ground Line 6 Left Rear RF Detector – Power Line 7 Left Front RF Detector – Ground Line 8 Left Front RF Detector – Power Line 9 Right Front RF Detector – Ground Line 10 Right Front RF Detector –Power Line 11 Right Rear RF Detector – Ground Line 12 Right Rear RF Detector – Power Line 13 ECU RF Antenna (optional)* 1.3.1.4 Pin out of the RF-Detector The RF-Detector pin out is shown by the drawing below. GND (Pin 2) Voltage Supply RF-Detector

The University of Michigan Radiation Laboratory 3228 EECS Building Ann Arbor, MI 48109-2122 Tel: (734) 764-0500 Measured Radio Frequency Emissions From Schrader Electronics Receiver Model: 12802431, 13129153, 13139107, 13172984 Report No. 415031-175 June 26, 2003 Copyright © 2003 For: Schrader Electronics Limited 11 Technology Park, Belfast Road Antrim BT41 1QS, Northern Ireland Contact: Jim Newport Tel: 011-44-2894-48-2066 Fax: 011-44-1849-46-8440 PO: Verbal Tests supervised by: Measurements made by: Report approved by: _____________________ Valdis V. Liepa Valdis V. Liepa Research Scientist Summary Tests for compliance with FCC Regulations Part 15, Subpart B, and Industry Canada RSS-210, were performed on Schrader Electronics models 12802431, 13129153, 13139107, 13172984. This device is subject to the Rules and Regulations as a Receiver. As a Digital Device it is exempt, but such measurements were made to assess the receiver's overall emissions. In testing completed on 9-Jun-03, the device tested in the worst case met the allowed FCC (Class B) specifications for radiated emissions by 22.3 dB (see p. 6). The conducted emissions tests do not apply, since the device is powered from a 12 VDC system. 2 1. Introduction Schrader Electronics models 12802431, 13129153, 13139107, 13172984 was tested for compliance with FCC Regulations, Part 15, adopted under Docket 87-389, April 18, 1989, and with Industry Canada RSS- 210, Issue 5, November, 2001. The tests were performed at the University of Michigan Radiation Laboratory Willow Run Test Range following the procedures described in ANSI C63.4-1992 "Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz". The Site description and attenuation characteristics of the Open Site facility are on file with FCC Laboratory, Columbia, Maryland (FCC Reg. No: 91050) and with Industry Canada, Ottawa, ON (File Ref. No: IC 2057). 2. Test Procedure and Equipment Used The pertinent test equipment commonly used in our facility for measurements is listed in Table 2.1 below. The middle column identifies the specific equipment used in these tests. Table 2.1 Test Equipment. Test Instrument Eqpt. Used Manufacturer/Model Spectrum Analyzer (0.1-1500 MHz) Hewlett-Packard, 182T/8558B Spectrum Analyzer (9kHz-22GHz) X Hewlett-Packard 8593A SN: 3107A01358 Spectrum Analyzer (9kHz-26GHz) X Hewlett-Packard 8593E, SN: 3412A01131 Spectrum Analyzer (9kHz-26GHz) Hewlett-Packard 8563E, SN: 3310A01174 Spectrum Analyzer (9kHz-40GHz) Hewlett-Packard 8564E, SN: 3745A01031 Power Meter Hewlett-Packard, 432A Power Meter Anritsu, ML4803A/MP Harmonic Mixer (26-40 GHz) Hewlett-Packard 11970A, SN: 3003A08327 Harmonic Mixer (40-60 GHz) Hewlett-Packard 11970U, SN: 2332A00500 Harmonic Mixer (75-110 GHz) Hewlett-Packard 11970W, SN: 2521A00179 Harmonic Mixer (140-220 GHz) Pacific Millimeter Prod., GMA, SN: 26 S-Band Std. Gain Horn S/A, Model SGH-2.6 C-Band Std. Gain Horn University of Michigan, NRL design XN-Band Std. Gain Horn University of Michigan, NRL design X-Band Std. Gain Horn S/A, Model 12-8.2 X-band horn (8.2- 12.4 GHz) Narda 640 X-band horn (8.2- 12.4 GHz) Scientific Atlanta , 12-8.2, SN: 730 K-band horn (18-26.5 GHz) FXR, Inc., K638KF Ka-band horn (26.5-40 GHz) FXR, Inc., U638A U-band horn (40-60 GHz) Custom Microwave, HO19 W-band horn(75-110 GHz) Custom Microwave, HO10 G-band horn (140-220 GHz) Custom Microwave, HO5R Bicone Antenna (30-250 MHz) X University of Michigan, RLBC-1 Bicone Antenna (200-1000 MHz) X University of Michigan, RLBC-2 Dipole Antenna Set (30-1000 MHz) X University of Michigan, RLDP-1,-2,-3 Dipole Antenna Set (30-1000 MHz) EMCO 2131C, SN: 992 Active Rod Antenna (30 Hz-50 MHz) EMCO 3301B, SN: 3223 Active Loop Antenna (30 Hz-50 MHz) EMCO 6502, SN:2855 Ridge-horn Antenna (300-5000 MHz) X University of Michigan Amplifier (5-1000 MHz) X Avantak, A11-1, A25-1S Amplifier (5-4500 MHz) X Avantak Amplifier (4.5-13 GHz) Avantek, AFT-12665 Amplifier (6-16 GHz) Trek Amplifier (16-26 GHz) Avantek LISN Box University of Michigan Signal Generator X Hewlett-Packard 8657B 3 3. Configuration and Identification of Device Under Test The DUT is a 433.92 MHz superheterodyne receiver, designed for onboard automobile security/convenience applications, and as such, it is powered from an automotive 12 VDC source. It is housed in a plastic case approximately 4 by 5 by 1 inches. The antenna protrudes from the box. For testing, a generic harness was provided by the manufacturer. In the receiver digital section, the decoding, signal processing, etc... are performed by a microprocessor timed by a 4.0 MHz oscillator. The DUT was designed and manufactured by Schrader Electronics Limited,11 Technology Park, Belfast Road,Antrim BT41 1QS, Northern Ireland. It is identified as: Schrader Electronics Limited Receiver Models: 12802431, 13129153, 13139107, 13172984 S/N or P/N: FCC ID: MRXGME433RX2 IC: 2546A-GME433RX All models are electrically identical. Different model numbers are assigned to separate the parts for diffent automobile manufacturer use. 3.1 Modifications Made There were no modifications made to the DUT by this laboratory. 4. Emission Limits The DUT tested falls under Part 15, Subpart B, "Unintentional Radiators". The pertinent test frequencies, with corresponding emission limits, are given in Tables 4.1 and 4.2 below. 4.1 Radiated Emission Limits Table 4.1. Radiated Emission Limits (Ref: 15.33, 15.35, and 15.109). Freq. (MHz) E lim (3m) μV/m E lim dB(μV/m) 30-88 100 40.0 88-216 150 43.5 216-960 200 46.0 960-2000 500 54.0 Note: Quasi-Peak readings apply to 1000 MHz (120 kHz BW) Average readings apply above 1000 MHz (1 MHz BW) 4.2 Conducted Emission Limits Table 4.2. Conducted Emission Limits (Ref: 15.107). Freq. (MHz) μV dB(μV) 0.450 - 1.705 250 48.0 1.705 - 30.0 250 48.0 Note: Quasi-Peak readings apply here 4 4.3 Antenna Power Conduction Limits Ref: 15.111(a). Pmax = 2 nW; for frequency range see Table 4.1. 5. Emission…

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