The CableTool uses TDR (Time Domain Reflectometry) technology to quickly identify an open or a short from 0 to 2,500 feet within a foot of the fault.
The CT50HR uses upgraded TDR technology to locate opens or shorts on metallic cables within inches of a fault up to a distance of 250 feet.
The graphical high resolution TDR has a color touchscreen to quickly identifying multiple faults on cables within 6 inch up to a distance of 15,000 feet.