Two work modes selectable, low voltage pulse reflection (ECHO) Time Domain Reflectometer (TDR), Impulse current (ICM) mode can be applied to all kinds of power cables.TDR auto detection: advanced & precise fault distance measurements.TDR manual detection : Easy and straightforward, complement with auto detection.Breakdown mode can automatic locate fault distance.PC compatibility ensures waveforms can be analyzed, stored and re-loaded.Gain can be adjusted.User friendly menu driven operation.Internal battery capable of working for 5 hours continuously.Big LCD display with backlit facility.The waveform can be printed out with a mini printer supplied with the instrument.Compact, light weight, splash proof molded cabinet.