Technical Description

FCC ID: NMTTHGR122NX-01

Operational Description

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FCCID_420252

     IDT Technology Limited



                                                                  FACSIMILE COMMUNICATION




             Technical description of THGR122NX


             THGR198N is a transmitter, which it operated at 433.96MHz at the center

             frequency with integral antenna. The EUT powered by 3V DC ( 2 X UM4 or

             “AAA” size 1.5V batteries ).When the batteries supplied to the unit, the

             MCU (U1) start to collect all relative data from the sensing devices, (eg

             TEMP, Humidity, Channel and C/F setting ). After the conversion by MCU

             U1, all data have be converted to serial signal.

             The signal should be in OOK format.

             Transmiter

             The X2 as the SAW filter, it used to control the OSC frequency and turned

             at 433.96MHz , the OOK signal have be amplified by Q10 and radiated from

             interal antenna.

             Miscellaneous

             The U1 MCU used as the encoder function, which it converted the TEMP &

             Humidity value into the OOK singal, The 32.768KHz as the main clock of

             MCU.




9/F Kaiser Estate, 41 Man Yue Street, Hunghom, Kowloon, Hong Kong. Tel 2764 7873 Fax 2765 6620 Cable IDTRAYMOND Telex 36567-IDTHK HX



Document Created: 2004-04-28 18:21:45
Document Modified: 2004-04-28 18:21:45

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