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Proceedings Paper

Testing method of DTMF circuits for telephony
Author(s): Krzysztof Burakowski; Dorota Mrozowska; Jerzy Zajac
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Paper Abstract

In the paper, the testing method of DTMF circuits applied for dialing signal generation in telecommunication systems is described. The method enables determining: frequency, amplitude, and harmonic distortions of DTMF signals generated by tested integrated circuit. It was developed by the authors. Application of digital IIR filters and Fourier transform provides good accuracy and constant metrological parameters of the test system in connection with short test time. As a result of the developed method, the automatic telephone test system TAT- 92 controlled by a personal computer is designed. This paper describes the problem, the solution, and the comparison of new method and classical method, based on analog filters.

Paper Details

Date Published: 1 August 1992
PDF: 6 pages
Proc. SPIE 1783, International Conference of Microelectronics: Microelectronics '92, (1 August 1992); doi: 10.1117/12.131018
Show Author Affiliations
Krzysztof Burakowski, Industrial Institute of Electronics (Poland)
Dorota Mrozowska, Industrial Institute of Electronics (Poland)
Jerzy Zajac, Industrial Institute of Electronics (Poland)

Published in SPIE Proceedings Vol. 1783:
International Conference of Microelectronics: Microelectronics '92

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