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    Simulation of TDR using LTSpice

    Hi all, I'm trying to simulate a TDR based on the figure below, and one of the scenarios is a short circuit. The simulation should last for 140ns. The parameters are ZA = 50 Ω TA = 5 ns ZB = 75 Ω TB = 10 ns Rise time of source signal τr = 0.1 ns I took this website as reference to come up...

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