FCCID.CO- FCC ID Database
HomeCompaniesEquipment ClassesSearch

© 2026 FCC ID Database. All rights reserved.

AboutContactData sourced from FCC public records
  1. Home/
  2. BCS Access Systems US LLC/
  3. GQ4-22T

GQ4-22TAutomotive Initiator

BCS Access Systems US LLC
Automotive Initiator - FCC ID GQ4-22T - BCS Access Systems US LLC
Click to zoom

Application Details

Equipment Class
DCD - Part 15 Low Power Transmitter Below 1705 kHz
Date of Grant
Oct 23, 2003
Application Purpose
Original Equipment
Date of Application
Oct 23, 2003
Equipment Note
Automotive Initiator
Frequency Range
0.12500000 - 0.16000000
Company
BCS Access Systems US LLC
Country
United States

Documents & Files

Select a file to view

Users Manual

↗

Block Diagram

↗

Cover Letter(s)

↗
↗
↗

External Photos

↗

ID Label/Location Info

↗

Operational Description

↗

Test Report

↗

Test Setup Photos

↗

Document Text

Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Users Manual

Re: Certification for TRW 39360-S3V-A0 Transmitter Model: 39360-S3V-A0 FCC ID: GQ4-22T IC: 1470A-3T USER'S MANUAL INFORMATION (PRELIMINARY) The User's Manual is in preparation. The following material will be contained in the manual: FCC ID: GQ4-22T IC: 1470A-3T 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.

Block Diagram

August 14, 2003 TRW Automotive U.S. LLC d.b.a. TRW Automotive Electronics 24175 Research Drive Farmington Hills, MI 48335 Tel: 248.478.7210 Fax: 248.478.7241 RE: Certification for TRW TPM ’04 Initiator Model #: 39360-S3V-A0 FCC ID: GQ4-22T Canada IC: 1470A-3T EXHIBIT_______ Confidential / Trade Secret Information Page ___ of ___ TRW BLOCK DIAGRAM 10MHz Crystal Microprocessor Filtering and Wave Shaping 4 Amp.Buffer 125KHz to 160KHz Data Transmitted Low Frequency Signal Figure 2 TPM Initiator Block Diagram August 14, 2003 TRW Automotive U.S. LLC d.b.a. TRW Automotive Electronics 24175 Research Drive Farmington Hills, MI 48335 Tel: 248.478.7210 Fax: 248.478.7241 RE: Certification for TRW TPM ’04 Initiator Model #: 39360-S3V-A0 FCC ID: GQ4-22T Canada IC: 1470A-3T EXHIBIT_______ Page ___ of ___ TRW GENERAL DESCRIPTION The device for which certification is being requested is a low frequency (125KHz) transmitter designed specifically for a Honda tire pressure monitoring system. With its associated tire sensors and receiver; the initiator is part of the system used to detect the tire pressure of the tires in a vehicle. Four initiators are used in each vehicle, one for each tire. They are located in or near the wheel well and are connected by wire harness to the central receiver. This central receiver sends a 125KHz waveform over the wire harness to the initiator where it is converted to a magnetic field that is broadcast to a sensor in the tire. The tire sensor then responds by transmitting a 315MHz signal back to the receiver, closing the loop. With warning lights on the dashboard, the receiver informs the driver when the air pressure in a certain tire is low. The initiator consists of one printed circuit board housed in a plastic case. Embedded in the plastic case is a low frequency ferrite antenna. A three-pin connector molded into the plastic case is used to connect the wire harness from the receiver. August 14, 2003 TRW Automotive U.S. LLC d.b.a. TRW Automotive Electronics 24175 Research Drive Farmington Hills, MI 48335 Tel: 248.478.7210 Fax: 248.478.7241 RE: Certification for TRW TPM ’04 Initiator Model #: 39360-S3V-A0 FCC ID: GQ4-22T Canada IC: 1470A-3T EXHIBIT_______ Confidential / Trade Secret Information Page ___ of ___ TRW PRINCIPLES OF CIRCUIT OPERATION The initiator receives a 125KHz waveform. Input comparator circuitry clean this waveform up where it is level shifted and timing shifted to avoid shoot through currents in the output push/pull transistor stage. The push/pull transistor stage drives a tank circuit tuned to approximately 125KHz and the inductor in the tank circuit is the magnetic transducer used to broadcast a signal to the tire sensor.

Cover Letter(s)

Re: Certification for TRW 39360-S3V-A0 Transmitter Model: 39360-S3V-A0 FCC ID: GQ4-22T IC: 1470A-3T 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 TRW 39360-S3V-A0 Transmitter Model: 39360-S3V-A0 FCC ID: GQ4-22T IC: 1470A-3T REQUEST FOR CONFIDENTIALITY Pursuant to 47 CRF 0.459, TRW requests that a part of the subject application be held confidential. This comprises Exhibits (5) Schematics (9) Internal Photos (Potted and not accessible to the consumer) (10) Parts List (Part of Exhibit only) TRW 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 October 22, 2003 Re: Certification for TRW 39360-S3V-A0 Transmitter Model: 39360-S3V-A0 FCC ID: GQ4-22T IC: 1470A-3T 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 TRW 39360-S3V-A0 Transmitter Model: 39360-S3V-A0 FCC ID: GQ4-22T IC: 1470A-3T GENERAL PRODUCT INFORMATION The device, for which certification is pursued, has been designed by: TRW Inc. 24175 Research Drive Farmington Hills, MI 48335-2642 David Kapolka Tel: 248.478.7210 ext 4858 Fax: 248.478.7241 It will be manufactured by: TRW Automotive Electronics 2240 Cranbrook Drive Auburn, New York, 13021 David Kapolka Tel: 248.478.7210 ext 4858 Fax: 248.478.7241 Canadian Contact: TRW Canada Limited 16643 Highway 12 Midland, Ontario, Canada L4R4L5 Phone Number: 705.526.8791 FAX: 705.527.6232 Contact: Bob Millett ext 4103

Cover Letter(s)

October 24, 2003 RE: TRW Inc. FCC ID: GQ4-22T The following is in response to comments made on the above referenced Application. General 1) Since the device may be mounted in any direction, please confirm that positioning of the device was investigated (i.e. X, Y, Z) in order to obtain worse case measurements at 3 meter. If not, then investigation of the device in X, Y, Z should be performed. Note that only worse case results need to be submitted. This is to ensure that worse case propagation from the device was not located in the Z-axis from the position shown in the test photos. The device was tested for all principle orientations, and the worst case emissions were reported. Since only one test setup photo is taken, we do not show the device in all orientations, as tested. 2) The limits in table 5.1 are correct for measurements up through 411 kHz. However, the limits for > 411 kHz are actually in uV/m instead of dBuV/m and therefore affects the results. Please correct. Sorry for the typo. A revised Test Report Exhibit has been uploaded including the corrected limit. 3) It is not certain if the labeling should be placed on the device or the main host unit (control module). It is not certain the device by itself is considered the TX or if this is simply the antenna and amplifier circuit. If the initiators are not considered fully as the TX, then the label should be applied to the main unit. Please provide a justification as to how the unit is labeled. Justification is as follows. TRW wants to place the labels as indicated primarily for identification, marketing, and inventory reasons. Since the RX is entirely contained in the control module, its label will be on main module. For the LF transmitter, the circuitry is split between the control module and the “initiator” module. Here, TRW requests that the label be placed on the “initiator” module because, in the users/manufacturers view, the initiator is this module and the transmitting coil is contained therein. Essentially, the labels are placed as such to avoid confusion and provide a means of identifying the RX and LF TX separately to the customer. Both modules will be sold together as part of the same model, 39360-S3V-A0.

Cover Letter(s)

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 ` October 23, 2003 RE: TRW Inc. FCC ID: GQ4-22T After a review of the submitted information, I have a few comments on the above referenced Application. General 1) Since the device may be mounted in any direction, please confirm that positioning of the device was investigated (i.e. X, Y, Z) in order to obtain worse case measurements at 3 meter. If not, then investigation of the device in X, Y, Z should be performed. Note that only worse case results need to be submitted. This is to ensure that worse case propagation from the device was not located in the Z-axis from the position shown in the test photos. 2) The limits in table 5.1 are correct for measurements up through 411 kHz. However, the limits for > 411 kHz are actually in uV/m instead of dBuV/m and therefore affects the results. Please correct. 3) It is not certain if the labeling should be placed on the device or the main host unit (control module). It is not certain the device by itself is considered the TX or if this is simply the antenna and amplifier circuit. If the initiators are not considered fully as the TX, then the label should be applied to the main unit. Please provide a justification as to how the unit is labeled. Timothy R. Johnson Examining Engineer mailto: [email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

ID Label/Location Info

August 14, 2003 TRW Automotive U.S. LLC d.b.a. TRW Automotive Electronics 24175 Research Drive Farmington Hills, MI 48335 Tel: 248.478.7210 Fax: 248.478.7241 RE: Certification for TRW TPM ’04 Initiator Model #: 39360-S3V-A0 FCC ID: GQ4-22T Canada IC: 1470A-3T EXHIBIT_______ Page ___ of ___ TRW FCC/IC IDENTIFIER AND MODEL NUMBER The figure shown below in Figure 1 will be embossed on the outside bottom side of the plastic case of the initiator. Figure 1 TPM Initiator FCC/IC Identifier The model number for the initiator is: 39360-S3V-A0 The FCC ID for the initiator is: GQ4-22T The Canada IC number for the initiator is: 1470A-3T

Operational Description

August 14, 2003 TRW Automotive U.S. LLC d.b.a. TRW Automotive Electronics 24175 Research Drive Farmington Hills, MI 48335 Tel: 248.478.7210 Fax: 248.478.7241 RE: Certification for TRW TPM ’04 Initiator Model #: 39360-S3V-A0 FCC ID: GQ4-22T Canada IC: 1470A-3T EXHIBIT_______ Page ___ of ___ TRW GENERAL DESCRIPTION The device for which certification is being requested is a low frequency (125KHz) transmitter designed specifically for a Honda tire pressure monitoring system. With its associated tire sensors and receiver; the initiator is part of the system used to detect the tire pressure of the tires in a vehicle. Four initiators are used in each vehicle, one for each tire. They are located in or near the wheel well and are connected by wire harness to the central receiver. This central receiver sends a 125KHz waveform over the wire harness to the initiator where it is converted to a magnetic field that is broadcast to a sensor in the tire. The tire sensor then responds by transmitting a 315MHz signal back to the receiver, closing the loop. With warning lights on the dashboard, the receiver informs the driver when the air pressure in a certain tire is low. The initiator consists of one printed circuit board housed in a plastic case. Embedded in the plastic case is a low frequency ferrite antenna. A three-pin connector molded into the plastic case is used to connect the wire harness from the receiver. August 14, 2003 TRW Automotive U.S. LLC d.b.a. TRW Automotive Electronics 24175 Research Drive Farmington Hills, MI 48335 Tel: 248.478.7210 Fax: 248.478.7241 RE: Certification for TRW TPM ’04 Initiator Model #: 39360-S3V-A0 FCC ID: GQ4-22T Canada IC: 1470A-3T EXHIBIT_______ Confidential / Trade Secret Information Page ___ of ___ TRW PRINCIPLES OF CIRCUIT OPERATION The initiator receives a 125KHz waveform. Input comparator circuitry clean this waveform up where it is level shifted and timing shifted to avoid shoot through currents in the output push/pull transistor stage. The push/pull transistor stage drives a tank circuit tuned to approximately 125KHz and the inductor in the tank circuit is the magnetic transducer used to broadcast a signal to the tire sensor.

Test Report

The University of Michigan Radiation Laboratory 3228 EECS Building Ann Arbor, MI 48109-2122 Tel: (734) 764-0500 Measured Radio Frequency Emissions From TRW Transmitter Model: 39350-S3V-A0 Report No. 415031-176 October 22, 2003 Copyright © 2003 For: TRW, Inc. 24175 Research Drive Farmington Hills, MI 48335-2642 Contact: David Kapolka Tel: 248.478.7210 ext 4858 Fax: 248.478.7241 Tests supervised by: Measurements made by: Edward M. Courtney Report approved by: _____________________ Valdis V. Liepa Valdis V. Liepa Research Scientist Summary Tests for compliance with FCC Regulations, Part 15, Subpart C, and for compliance with Industry Canada RSS-210, were performed on TRW, Inc. transmitter, model 39350-S3V-A0. This device is subject to Rules and Regulations as a transmitter. In testing completed 28-Jul-03, the device tested in the worst case met the allowed specifications for transmitter radiated emissions by 51.6 dB (see p. 7); digital emissions, Class B, were met by at least 20 dB. The conducted emissions tests do not apply, since the device is powered from a 12 VDC system. 2 1. Introduction TRW model 39350-S3V-A0 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 Procedures 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) X EMCO 6502, SN:2855 Ridge-horn Antenna (300-5000 MHz) X University of Michigan Amplifier (5-1000 MHz) X Avantek, A11-1, A25-1S Amplifier (5-4500 MHz) X Avantek 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 Hewlett-Packard 8657B 3 3. Configurations and Identification of Device Under Test The DUT is a 135 kHz LF transmitter designed for an onboard automobile Tire Pressure Monitoring System (TPMS), and as such, it is powered from an automotive 12 VDC source. It is housed in a plastic case approximately 3 by 2 by 1.5 inches. Coil is internal. For testing, a generic harness was provided by the manufacturer. The DUT is designed to operating over a range of frequencies between 125 and 160 kHz. The DUT was designed by TRW, Inc., 24175 Research Drive, Farmington Hills, MI 48335-2642. It is identified as: TRW, Inc. Transmitter Model: 39350-S3V-A0 FCC ID: GQ4-22T CANADA: 1470A-3T 3.1 EMI Relevant Modifications No EMI Relevant Modifications were performed by this test laboratory. 4. Emission Limits 4.1 Radiated Emission Limits The DUT tested falls under the category of an Intentional Radiators and the Digital Devices, subject to Subpart C, Section 15.209; and Subpart B, Section 15.109 (transmitter generated signals excluded); and Subpart A, Section 15.33. The applicable testing frequencies with corresponding emission limits are given in Tables 4.1 and 4.2 below. As a digital device, it is exempt. Table 4.1. Radiated Emission Limits (FCC: 15.205, 15.35; IC: RSS-210 (6.2.2(r), 6.3)). (Transmitter) Frequency (MHz) Fundamental and Spurious* (μV/m) 0.009-0.490 0.490-1.705 2400/F(kHz), 300m 24,000/F(kHz), 30m 0.090-0.110 0.49-0.51 Restricted Bands * Harmonics must be below the fundamental. For extrapolation to other distances, see Section 6.6. 4 Table 4.2. Radiated Emission Limits (FCC: 15.33, 15.35, 15.109; IC: RSS-210, 6.2.2(r)). (Digital Class B) 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: Average readings apply above 1000 MHz (1 MHz BW) Quasi-Peak readings apply to 1000 MHz (120 kHz BW) 4.2 Conductive Emission Limits Table 4.3 Conducted Emission Limits (FCC:15.107 (CISPR); IC: RSS-210, 6.6). Frequency Class A (dBμV) Class B (dBμV) MHz Quasi-peak Average Quasi-peak Average .150 - …

Text truncated - open the document above for the full version.

Contact Information

Applicant

Jack Burr(Engineering Manager - Hardware)
[email protected]248-970-0103Fax: 000-000-0000

Technical Contact

University of Michigan/EECSValdis V Liepa
[email protected]734-483-4211

1301 Beal Ave. · Ann Arbor, Michigan · United States

Non-Technical Contact

University of Michigan/EECSValdis V Liepa
[email protected]734-483-4211

Test Firm

University of MichiganValdis Liepa
[email protected]734-647-1792Fax: 734-647-2106

Technical Specifications

#Rule PartsFrequency RangePower Output
115C0.125 MHz - 0.16 MHz-
Confidentiality
Long Term
Grant Notes
This device must be installed as part of a system only using control module, FCC ID: GQ4-3QR.

Other Applications from BCS Access Systems US LLC

Tire Pressure Monitor - FCC ID GQ4-70T - BCS Access Systems US LLC
GQ4-70T

Tire Pressure Monitor

Feb 25, 2014

Equipment Class

DSC - Part 15 Security/Remote Control Transmitter
Tire Pressure Monitor - FCC ID GQ4-69T - BCS Access Systems US LLC
GQ4-69T

Tire Pressure Monitor

Feb 24, 2014

Equipment Class

DSC - Part 15 Security/Remote Control Transmitter
Tire Pressure Monitoring Transmitter - FCC ID GQ4-67T - BCS Access Systems US LLC
GQ4-67T

Tire Pressure Monitoring Transmitter

Nov 14, 2013

Equipment Class

DSC - Part 15 Security/Remote Control Transmitter
Tire Pressure Monitor - FCC ID GQ4-66T - BCS Access Systems US LLC
GQ4-66T

Tire Pressure Monitor

Aug 04, 2013

Equipment Class

DSC - Part 15 Security/Remote Control Transmitter
Tire Pressure Monitoring Transmitter - FCC ID GQ4-61T - BCS Access Systems US LLC
GQ4-61T

Tire Pressure Monitoring Transmitter

Mar 24, 2013

Equipment Class

DSC - Part 15 Security/Remote Control Transmitter