All 2T pulses produced by the Video Generators SGPF, SAF and SFF feature minimal preshoots and postshoots so that the pulse base is increased to 420 ns (nominal 400 ns) at the nominal half-amplitude duration of 200 ns.The 2T pulse is therefore wider at the base and narrower at the top. The 2T k factor is determined from the base width and is approximately 0.5%. This pulse shape is of advantage for performing evaluations on an oscilloscope. Since there are no pre- and postshoots, any distortion displayed on the oscilloscope is caused by the device under test. Reading off the result is thus simplified as value differences do not have to be taken into account.
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