operational description

FCC ID: GQ4-42T

Operational Description

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FCCID_1096466

TRW Automotive March 3, 2009 TEE 24175 Research Dr. Farmington Hills, MI 48335-2642 Tel 248.478.7210 Fax 248.699.4241 RE: Certification for HKMC MY10 FSK 315MHz Low Line Transmitter Model #: 220644112 FCC ID: GQ4-42T Canada IC: 1470A-23T GENERAL DESCRIPTION This transmitter is a transmitter device with tire valve, which is mounted in the valve hole of the wheel rim and transmits the pressure and temperature inside the tire, the battery voltage of the transmitter, and the tire identification code (ID) at normal and abnormal condition with the radio wave (RF) that conforms to the used area. Also this device has a countermeasure function such as the random delay of transmission time so that the RF signal from each tire will not interfere due to the simultaneous transmission. The transmitter device also has a Low Frequency (LF) receiver. This receiver supports Low Frequency (LF) magnetic field communications allowing the changing of measurement/monitoring states of the transmitter by commands sent via the TPM diagnostic tool. The RF signal operates at 315MHz and uses FSK Manchester code modulation. Description of Operations Mode of Explanation Frequency of Transmission Operation 4 words when activation occurs with Storage Mode No transmission. Measures temperature & pressure TPM diagnostic tool Measures temperature and pressure. Transmits  4 words every 210 seconds Normal Mode periodically. Enters this mode from storage when  4 words when activation occurs pressure goes above threshold. with TPM diagnostic tool Transmits when: Alert Mode a) significant pressure delta detected 8 words every 4 seconds for 1 minute b) high temperature is detected Legal name here


Document Created: 2009-04-06 10:38:55
Document Modified: 2009-04-06 10:38:55
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