technical description

FCC ID: NMTTHR128-01

Operational Description

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FCCID_6654

ilDXT Integrated Display Technology Ltd. & MA B K# 4 R 4A 4 Technical descriptions of THR168 THR16$8 is a remote thermo—sensor. It converts analogue temperature signal into digital signal and transmits via RF channel. It composes a controlier part and a transmitter part. The transmitteris basically a Colipittis oscillator, where C1, C2 and X1 are used to determinate the resonant frequency that is 433.92MHz. Transistor Q1 whose fT is greater than 6GHz, provides a good frequency response to the circuit. There is a LC filtering circuitry, L1 and C3, that is used to suppress harmonics of the oscillator. An inductor, L3, is employed to match the impedance of the antenna, L4. FCC ID: NMTTHR128—01 9F Kaiser Estate, 41 HMan Yue Street, Hunghom, Kowloon, Hong Kong. Tel 2764 7873 Fax


Document Created: 1998-09-05 10:57:48
Document Modified: 1998-09-05 10:57:48
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