| 摘要 |
The invention relates to a method and a switching arrangement for the identification of Pupin coils in a telecommunications line. In order to identify Pupin coils, periodic transmission symbols are transmitted by a transmission device (2, 4, 5), an analog reception signal is received, sampled and processed further by a reception device (3, 6), the frequency response of the reception signal is determined for a prescribed number of frequency points in a prescribed frequency range, a function with function values (F(fi)) is calculated from the real part and the imaginary part of the frequency response of the reception signal, and a differential vector (Deltari) is determined from the function values (F(fi)) by a computing unit (11, 12, 13, 14, 15), a criterion which specifies whether a pupinized line is present being derived from the components of the differential vector (Deltari). |
