The CableTool uses TDR technology to quickly determine the distance to a cable fault (open or short) in feet or meters. The unit has over 60 pre-stored standard cable NVP values and allows the user to define and store up to four custom NVP values.

The CableTool also features an NVP learn mode when used with a known length of cable. The NVP can then be stored eliminating the need to recalibrate each time the unit is turned on. The CableTool provides a voltage measurement capability up to 250 Vrms. Displayed voltages warn the user of potentially unsafe test conditions and can be used to identify the type of circuit under test.

Additionally, The CableTool includes a tone generator function with selectable tones that allows cable tracing with most tone probes. Unit includes case, four AA batteries and alligator clip leads.