Abstract: The present disclosure is directed toward a method for measuring a true concentricity of a rotating shaft. The method includes simultaneously measuring, with diametrically opposed position sensors, opposite sides of the rotating shaft at an initial state to acquire a first measurement data and at a 180-degree rotation to acquire a second measurement data. The method further determines a rotational centerline and a shaft centerline based on the first and second measurement data, and calculates a concentricity error of the rotating shaft based on the determined rotational centerline and the shaft centerline.

Abstract: A method of setting up a trigger function within the context of a data display on a logic analyzer provides a trigger setup window adjacent to the data display with a plurality of trigger setup icons. One of the trigger setup icons is selected as the trigger function, and a pointer representing the trigger function is dragged to a position on the data display. Dropping the pointer at the position on the data display completes the trigger function setup. An informational box associated with the pointer indicates the trigger function and a current parameter for the trigger function according to the location of the pointer on the data display. At completion of the trigger function setup, the trigger setup window provides the trigger function setup and allows an operator to edit the trigger function setup. The trigger function is executed at the next run of the logic analyzer.