The handheld CFL510G time domain reflectometer (TDR) from Megger features a 2-ns pulse width that is said to virtually eliminate dead zones, letting the instrument accurately locate faults less than three feet from the point of connection. Designed for use on all metallic pairs, including twisted pair copper and coax cable, the instrument is well-suited for CATV/cellular, power, and telephony applications.
The meter’s auto set-up feature determines the impedance of the cable under test, sets the instrument accordingly, and selects the optimum gain and pulse width chosen by the operator. Powered by AA batteries, the TDR has four output impedances (25, 50, 75, and 100 Ω), a velocity factor between 0.20 and 0.99, dual cursors for pinpointing faults, and a trace-hold feature for comparison of different cables.
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