#$%^&*AU2016202115A120161027.pdf#####METHODS TO SHORTEN CALIBRATION TIMES FOR POWERED DEVICES ABSTRACT A calibration method for a hand-held surgical instrument (10) is disclosed. The hand-held instrument (10) includes a drive motor (200), a firing rod (220) controlled by the drive motor (200) and having at least one indicator (320a, 320b), and a sensor (231) configured to detect the at least one indicator. A microcontroller (500) includes a pulse modulation algorithm stored therein to control the drive motor (200). The microcontroller (500) executes a calibration algorithm to adjust at least one program coefficient in the pulse modulation algorithm.
