... this accuracy is usually not necessary ( tolerance Z=± 20% [3] , or even none at all [2]) , and other parameters — tolerance almost normalized). Сonclusions 1. Developed accurate pulse methods of research parameters of cables, determining their intrinsic safety, including C, L, L/R, and V and Z.2. Techniques include frequency changing parameters L, R, V, Z and C ( if any ), and the distributed character C ', L' and R' of the cables. 3. It is established that it is not enough for accurate estimates ...

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