Keysight N9918BU/215 TDR Cable Measurements Option

Overview

The Keysight N9918BU/215 is a TDR (Time-Domain Reflectometry) Cable Measurements option for FieldFox series analyzers. This option identifies the location and nature of faults along transmission cables using inverse Fourier transform techniques applied to frequency-domain measurements. TDR analysis helps technicians and engineers characterize cable integrity, identify fault types (resistive, inductive, or capacitive), and diagnose line problems.

Key Features

• TDR measurements in linear rho and impedance (ohm) formats
• DTF (Distance to Fault) analysis capability
• Selectable X-axis display: distance in meters or feet
• Identifies fault location and fault type (resistive, inductive, capacitive)
• Based on inverse Fourier transform of frequency-domain data

Applications

• Cable fault identification and location diagnosis
• Transmission line characterization and quality verification
• In-field service and troubleshooting of cable systems
• Quality assurance testing for cable manufacturing