Accession Number : ADP000552

Title :   Comparative Study of Analog and Digital Crosstalk Measurements Methods on Telephone Cables,


Personal Author(s) : Abadia,V. ; Marinosa,J. L.

Report Date : NOV 1982

Pagination or Media Count : 13

Abstract : The evaluation of a telephone cable capability for digital transmission has been traditionally based on analogical measurements of cable crosstalk. In this manner, from a single frequency measurement value, it is intended a prediction of the cable behaviour in all the transmission band. In recent years it has been observed a tendency in some telephone administrations toward cable crosstalk characterization in a direct way, by means of digital measurements using real signals. In this study the analog and digital measurements methods are compared, from the points of view of accuracy of results and simplicity of operation. As a result of an extensive number of measurements performed in accordance with both methods, correction factors have been determined which should be added to the single frequency measurements results in order to compensate for the uncertainty introduced due to the incomplete knowledge of the curve of variation of crosstalk with frequency. (Author)

Descriptors :   *Fiber optics transmission lines, *Electric cables, *Electric wire, *Symposia, *Comparison, *Analog systems, Feasibility studies, Crosstalk, Digital systems, Measurement, Methodology, International

Distribution Statement : APPROVED FOR PUBLIC RELEASE