Patent ID: 7412355

Claim:
A method of displaying the relationship between a work threshold for a comparator to which a work signal is applied and the signal swing of that work signal, the method comprising the steps of: (a) finding the signal swing by the steps of: (a1) applying the work signal to the comparator; (a2) setting a selected trial threshold for the comparator; (a3) setting a bit to a first state; (a4) setting the bit to a second state if the comparator indicates a selected comparison; (a5) saving the selected trial threshold of step (a2) and the associated outcome of the bit of step (a4); (a6) repeating steps (a2) through (a5) for selected trial thresholds; and then (a7) examining what was saved by step (a5) to determine the signal swing of the work signal; and then (b) displaying a first visual indication within a column associated with the work signal and parallel to a first axis graduated in voltage, the first visual indication being of a length and position that correspond to the signal swing found in step (a).