时域反射计（ＴＤＲ）在电话工程中的应用邵大川电用故障定位的现状电话系统维修的最大难题之一是电缆故障的鉴定和定位。确定长达几十千米电缆故障的准确位置，对室外维修人员来说特别困难．甚至会徒劳无功．直到今日，故障定位问题在很大程度上还是个经验问题，而不是个... Application of Time Domain Reflectometer (TDR) in Telephone Engineering Shao Da-Chuan Status of Fault Location for Electricity One of the biggest problems in telephone system maintenance is the identification and location of cable faults. Determine the exact location of up to tens of kilometers of cable failure, outdoor maintenance personnel is particularly difficult. Even futile. Until today, the fault location problem is still a matter of experience to a large extent, not a ...