Circuit and method for pulse width measurement

Details Circuit and method for pulse width measurement Circuit and method for pulse width measurement

G - Physics

01

R

324/63

G01R 29/02 (2006.01) G01R 29/027 (2006.01)

Patent

CA 2024746

55,342 ABSTRACT OF THE DISCLOSURE A method of measuring the duration of a selected pulse in a pulse train produces a pulse count enable logic signal in response to a start pulse to enable a first down counter to count transition points in the pulse train. The pulse count enable logic signal has a duration at least as long as two sequences of pulses in the pulse train. The first down counter counts down from a predetermined initial count representative of the selected pulse in the pulse train and enables a second counter when the count corresponding to that selected pulse is reached. The second counter is used to count high speed clock pulses until the end of the selected pulse in the pulse train. The final output count of the second counter is then used to calculate the duration of the selected pulse.

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