ST985 is a unique TDR cable analyzer, with an integrated FRA, designed for various cables with lengths of 50 cm to more than 1000 km. It automatically tests for shorts, measures cable’s length, impedance, resistance, capacitance, inductance, as well as the transmission loss through the cable. The measurement results are then displayed both for the entire length of the cable, and also for the unit length; available in feet or meters. The TDR acquisition bandwidth is around 1 GHz, and the stimulating step signal rise time is less than 1 nS. This allows for the precise measurements of cable parameters.