N9915AU/215 TDR Cable Measurements Option identifies the location and nature of faults along cables using time-domain reflectometry measurements. FieldFox’s TDR measurements are based on an inverse Fourier transform of the frequency-domain data. TDR measurements are useful in not only identifying the location of faults along cables, but also the nature of the fault. Resistive, inductive and capacitive faults will each have a different response. These differences help engineers and technicians trouble-shoot line faults.

• Measurements: TDR (linear rho), TDR (ohm), TDR and DTF
• Y-axis: linear (rho) or impedance (ohm)
• X-axis: distance (meters or feet)