0 minutes to permit optimum setting accuracy.3 seconds to 3 minutes.Price/Performance Value: The economical 329A is the lowest cost TDR ever offered by ATC.A choice of eight fixed ranges are available from 0.
Wide Choice of Ranges: In addition to the short ranges expected of an electronic TDR, the 339 is also available with ranges as long as 10 hours.High Accuracy: The 339's timing circuit is not a simple RC circuit, but utilizes the sophistication of a proprietary integrated circuit that includes counting technology along with a stable oscillator to provide repeatable time delays. An unusually versatile timer, the 339 has six dial-selected ranges-from 0. even after long periods of down-time.