block diagram

FCC ID: GQ4-36T

Block Diagram

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FCCID_808519

TRW Automotive April 27, 2007 OSS Electronics 24175 Research Dr. Farmington Hills, MI 48335-2642 Tel 248.478.7210 Fax 248.478.7241 RE: Certification for Honda MY08 FSK Baseline TPM Sensor Model #: 217652-101 FCC ID: GQ4-36T Canada IC: 1470A-17T PRINCIPLES OF CIRCUIT OPERATION The sensor incorporates an ASIC to measure the parameters within the tire. The ASIC outputs the measured data in digital pulses. The digital data is frequency modulated. The transmitted signal uses Frequency Shift Keying (FSK). The carrier frequency of the sensor is 315 MHz typically. The worst case frequency shift of the carrier is 314.877MHz for the low frequency and 315.127MHz for the high frequency shift. The receiver bandwidth must be wide enough to pass the transmitter worst case frequency shifts. Reference Block Diagram in Figure 3. BLOCK DIAGRAM Housing Battery Pressure / Temperature Valve - Rim RF Oscillator /Accel Sensor Mount / Control IC LF 9.84375MHZ XTAL Receiver Figure 3. TPM Sensor Block Diagram Legal name here


Document Created: 2007-06-17 12:46:10
Document Modified: 2007-06-17 12:46:10
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