DTMF encoder and decoder using Lab VIEW

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In this paper, a laboratory experiment is presented for a senior technical elective course in telecommunications in the Electrical Engineering Technology Baccalaureate program at Penn State Erie, The Behrend College. For this experiment, students use LabVIEW and a PC-based data acquisition (DAQ) system to design a dual-tone multifrequency (DTMF) encoder and decoder. The user input for the encoder is from a 12-pushbutton external keypad used to simulate the touch-tone telephone keypad. The output of the decoder is a 7-segment display used to indicate the depressed pushbutton. The encoder and decoder are each implemented on a separate PC-based DAQ system. They are interconnected with a signal wire and a ground wire, simulating the telephone line. Penn State Erie, The Behrend College, in the Electrical Engineering Technology program.

Original languageEnglish (US)
Pages (from-to)6759-6768
Number of pages10
JournalASEE Annual Conference Proceedings
StatePublished - Dec 1 2002
Event2002 ASEE Annual Conference and Exposition: Vive L'ingenieur - Montreal, Que., Canada
Duration: Jun 16 2002Jun 19 2002

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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