Pulse or digital communications – Repeaters – Testing
Patent
1985-02-27
1987-03-31
Griffin, Robert L.
Pulse or digital communications
Repeaters
Testing
375 76, 324 57N, G01R 2700, H04B 346
Patent
active
046548629
ABSTRACT:
An analyzer for noise signals which are transmitted by a telephone pair in a telephone cable is connected to a digital transmission equalizer. A delimiting circuits delimits the binary stream generated by the threshold detector into data packets such that each stream is considered to be a unique packet as long as the stream does not comprise a predetermined number of zeros. At predetermined instants, writing is triggered into a random access data memory to store the contents of a schedule data register, of a storage register and of a frame unique word register. The time base also comprises an output connected to an incrementing input of an address counter and to an output connected to the zero reset input of storage register.
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Soderberg "Automatic Transmission Measuring Equipment, ATME2 for International Telephone Circuits" pp. 21-28 Ericsson Review vol. 51, No. 7, 1974.
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Harrison "Measuring Equipment for Data Transmission Channel" Philips Telecommunications Review, vol. 27, No. 1, Aug. 1967.
Camborde Jean-Marc
Perrot Jean-Claude
Schirlin Marcel
Chin Stephen
Griffin Robert L.
L'Etat Francais
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