... 8 KM Chapter1 General 1.1 General informationSW_TC880 =TDR + Bridge SW_TC880=Automatic Detection + Manual DetectionSW_TC880 Cable Fault Locator is ... its working principle is Time Domain Reflectometer (TDR) and Bridge Methods. It is a very convenient, intelligent and reliable ... 1.2 Featuresl SW_TC880 combines the conventional TDR method and Bridge Method for fault detecting, faults like open circuit, ...