KOBGR06BAutomotive Receiver

Re: Certification for Lear Receiver Model: GM15212377 FCC ID: KOBGR06B IC: 3521A-R06B USER'S MANUAL INFORMATION (PRELIMINARY) The User's Manual is in preparation. The following material will be contained in the manual: FCC ID: KOBGR06B IC: 3521A-R06B 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.

6. Block Diagrams I/O Block Diagram of Receiver Module 315MHz RF Receiver Block Diagram . 9.509 MHz Xtal 6. Block Diagrams Continued: Superheterodyne Receiver IC Internal Block Diagram

Re: Certification for Lear Receiver Model: GM15212377 FCC ID: KOBGR06B IC: 3521A-R06B 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 Lear Receiver Model: GM15212377 FCC ID: KOBGR06B IC: 3521A-R06B REQUEST FOR CONFIDENTIALITY Pursuant to 47 CRF 0.459, Lear requests that a part of the subject application be held confidential. This comprises Exhibits (5) Schematics (10) Parts List (Part of Exhibit only) Lear 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 September 30, 2005 Re: Certification for Lear Receiver Model: GM15212377 FCC ID: KOBGR06B IC: 3521A-R06B 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 Lear Receiver Model: GM15212377 FCC ID: KOBGR06B IC: 3521A-R06B GENERAL PRODUCT INFORMATION The device, for which certification is pursued, has been designed by: Lear Corporation 5200 Auto Club Drive Dearborn, MI 48126 Bill Hooper Tel: 313-593-9841 Fax: 313-593-9526 It will be manufactured by: Lear Corporation 5100 W. Waters Ave. Tampa, Florida 33634 Bill Hooper Tel: 313-593-9841 Fax: 313-593-9526 Canadian Contact: Tom Odell 1908 Colonel Sam Drive Oshawa, ON L1H 8P7 Tel: (905) 644 - 7103

October 4, 2005 RE: Lear Corporation FCC ID: KOBGR06B The following is in response to the comments made on the above referenced Application. 1) The frequency of the crystal in the internal photos does not appear to match the block diagram and test report frequencies listed. Please explain. There was a typo in the block diagram which carried over into the test report. Both have been corrected. 2) The font used for the label is confusing since you can not distinguish between B and 8’s. Please review/correct as necessary. The resolution of the ID label photograph provided was reduced to minimize file size. This makes it slightly less clear, and in turn masks how a “B” and an “8” are distinguishable. However, the “B” has an obvious straight vertical left edge in practice, and we do not believe there is any need for concern. 3) Was the device tested in 3 axis or will the device always be mounted in the position tested? It was tested for all orientations, as stated in section 5.3 of the test report.

DUT top with harness DUT bottom with harness

1. ID Label Drawing The FCC ID and IC ID are on a label which is located on the top of the module housing. The label information shown below will be molded into the top side on the plastic housing of the receiver module: 2. ID Label Location The ID label has OEM and Module Manufacturer information. The module part number label is located below the FCC ID and IC ID. The statements of compliance are molded into the top side of the module housing. This device complies with Part 15 of the FCC Rules and with RSS-210 of the 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.

DUT apart (top) DUT apart (bottom) PCB (bottom) PCB (top)

6. Block Diagrams Continued: Superheterodyne Receiver IC Internal Block Diagram 7a. Module Description of Operation The product for which certification is pursued will be manufactured for General Motors Corporation by Lear Corporation for automotive applications. This 315 MHz Super Heterodyne receiver module is mounted in an automobile and works in conjunction with a hand held transmitter and wheel mounted TPM (Tire Pressure Monitoring) transmitters. . The receiver is permanently mounted in the vehicle and is powered by the vehicle battery. This receiver performs the following functions: Remote Engine Start/Engine Stop Lock/unlock Trunk Panic/alarm TPM Message Reception The module is designed to receive 315MHz RF signals which are ASK modulated. The module’s RF Circuit receives an RF message and demodulates the RF message into a digital message that is then sent to the microcontroller. The microcontroller will decrypt the message and will send a digital message to the bus communication circuitry; the bus communication circuitry will then send the message at the proper voltage levels over the communication bus to other devices. The power regulation circuitry supplies a 5V regulated voltage to the rest of the circuits on the module. There are 2 oscillator circuits in the design; oscillator circuit 1 is at 9.5094 MHz and oscillator circuit 2 is at 8.00 MHz. 7b. RF Receiver Description of Operation The RFA module’s RF receiver consists of an integrated low noise amplifier coupled to an integrated low power superheterodyne receiver. A 315MHz band-pass (SAW) filtering is applied between the LNA and superheterodyne receiver. The low noise amplifier and superheterodyne receiver are tuned to receive amplitude-shift-keyed (ASK) data in the 315MHz frequency range. The receiver IC contains a low noise amplifier, double balanced mixer, fully integrated VCO, crystal oscillator, limiter with RSSI generation, data filter, data comparator, and peak detector. The signal at the receiver IC input is amplified by an internal LNA which has a voltage gain of 16 dB. A double balanced mixer then down-converts the 315MHz signal to a 10.7MHz intermediate frequency (IF) by low side injection at the mixer with a division ratio of 32. A 9.504 MHz crystal oscillator frequency is used for the IF generation; the local oscillator (LO) frequency of the receiver is 304.3 MHz. The receiver has a series of AC-coupled limiting amplifiers which produce a gain of 65dB centered near the IF frequency with Received Signal Strength Indication (RSSI). The RSSI circuit demodulates the IF data by producing a DC output proportional to the log of the IF input signal. The demodulated data is then filtered and fed into a data slicer. The data slicer is a fast comparator with a bandwidth of 100 kHz. It compares the analog input data with a self adjusting reference level generated by an RC term. The output of the data slicer, which is the receiver data out, is a digital signal (CMOS-like levels).

University of Michigan Radiation Laboratory FCC Part 15, IC RSS-210/Gen - Test Report No. 415031-261 Page 1 of 9 The University of Michigan Radiation Laboratory 3228 EECS Building Ann Arbor, MI 48109-2122 Tel: (734) 764-0500 Measured Radio Frequency Emissions From Lear Corporation Receiver Model(s): GM15212377 Report No. 415031-261 September 29, 2005 Copyright © 2005 For: Lear Corporation 5200 Auto Club Dr. Dearborn, MI 48126-9982 Contact: Bill Hooper Tel: 313-593-9841 Fax: 313-593-9526 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/Gen, were performed on Lear Corporation model GM15212377. 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 September 20, 2005, the device tested in the worst case met the allowed FCC (Class B) specifications for radiated emissions by 14.8 dB (see p. 6). The conducted emissions tests do not apply, since the device is powered from a 12 VDC system. University of Michigan Radiation Laboratory FCC Part 15, IC RSS-210/Gen - Test Report No. 415031-261 Page 2 of 9 1. Introduction Lear Corporation model GM15212377 was tested for compliance with FCC Regulations, Part 15, adopted under Docket 87-389, April 18, 1989, and with Industry Canada RSS-210, Issue 6 and RSS-Gen, Issue 1, September, 2005. The tests were performed at the University of Michigan Radiation Laboratory Willow Run Test Range following the procedures described in ANSI C63.4-2003 "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 University of Michigan Radiation Laboratory FCC Part 15, IC RSS-210/Gen - Test Report No. 415031-261 Page 3 of 9 3. Configuration and Identification of Device Under Test The DUT is a 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 3 by 2 by 1 inches. Antenna is internal. For testing, a generic harness was provided by the manufacturer. In the receiver section is referenced to a 9.509 MHz crystal and the microprocessor is timed by a 8.0 MHz crystal oscillator. The DUT was designed by Lear Corporation, 5200 Auto Club Dr., Dearborn, MI 48126-9982. It is identified as: Lear Corporation Receiver Model: GM15212377 S/N or P/N: Receiver FCC ID: KOBGR06B IC: 3521A-R06B 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: FCC 15.33, 15.35, and 15.109; IC RSS-210, 2.6 Table 2). Freq. (MHz) E lim (3m) μV/m E lim (3m) dB(μV/m) 30-88 100 40.0 88-216 150 μV/m 43.5 216-960 200 μV/m 46.0 960-2000 500 μV/m 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 4.3 Conducted Emission Limits (FCC:15.107 (CISPR); IC: RSS-Gen, 7.2.2 Table 2). Frequency Class A (dBμV) Class B (dBμV) MHz Quasi-peak Average Quasi-peak Average .150 - 0.50 79 66 66 - 56* 56 - 46* 0.50 – 5.0 73 60 56 46 5.0 – 30.0 73 60 60 50 Notes: 1…

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DUT on OATS DUT on OATS (close-up)