Designed to locate faults on all metallic cables, including twisted pair wires and coax cables, TDR2010 Time Domain Reflectometer features 800 x 400 pixel, backlit WVGA color LCD with user-definable tones. IP54-rated unit offers velocity factor of 0.20–0.99 and 5 output impedances of 25, 50, 75, 100, and 125 Ω. TDR has minimum resolution of 0.1 m and max range of 20 km, depending on velocity factor and cable type. With trace tagging function, user can maintain records of circuit details.