Description

FCC ID: MRXC53MA4S

Operational Description

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FCCID_1393133

The Schrader Electronics GM Clamp In Sensor is designed to be used in a direct measurement TPM (Tire Pressure Monitoring) System. The TPM Sensor is intended to interface to a receiver/decoder that has been designed to accept the TPM sensor protocol. The TPM Sensor is designed to monitor a vehicle's tyre pressure whilst driving or stationary. An electronic unit inside each tyre (referred to as the TPM Sensor or TPM transmitter) mounted to the valve stem, periodically measures actual tyre pressure/temperature. By means of an RF link, this pressure information is transmitted to a receiver/decoder. The incoming radio frequency signals are decoded, and the data used to inform the driver of the tyre pressure information via the vehicles TPM interface. TPM Sensor main functions are: • Regularly measure the tyre pressure. • Monitor if the wheel is moving. • Periodically transmit tyre pressure using an RF link and a specific protocol. • Monitor condition of the battery and not ify the system during an RF transmission if the battery performance degrades. • Not ify the system if ther e are abnormal p ressure va riations (leak) in the tyre.

Consumer Use Manufacturing & Mode of Operation Explanation Frequency of Transmission Modes Service Modes Forced Transmission "Learn On receipt of a particular LF sequence this Forced transmission allows the X Forced Transmission as required Mode" (dealer / plant) interrogation of the sensor in the vehicle factory or dealership Transmitter in normal operation when a low battery flag has been set - X Low battery Transmission rate depending on Drive mode wheel is rotating X Off Mode Part is in an off state, No transmissions, Exit by LF or∆P No transmissions X Stationary Mode First transmittion in normal operation - when wheel is rotating then moves X Wake Mode At the start of wheel rtation into drive mode X Fartory Drive Mode Transmitter in normal operation - wheel is rotating Transmission rate every 10secs X Drive Mode Transmitter in normal operation - wheel is rotating Transmission rate every 60secs Transmitter in normal operation and meassuresment sample which is less Pressure Re-Measure Mode Alarm transmission as required then 5 counts than the pervious sample


Document Created: 2010-12-17 09:27:02
Document Modified: 2010-12-17 09:27:02
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