Zero-g offset identification of an accelerometer employed in a hard disk drive

A method of manufacturing a disk drive, comprising:

• obtaining the output of an accelerometer mounted on a printed circuit board of a disk drive, the output having a component corresponding to each of three mutually orthogonal axes including a vertical axis oriented vertically to experience a 1 G acceleration due to gravity;
• converting each of the three component outputs into a digital format;
• determining if an offset exists in the output of the accelerometer in each of the three mutually orthogonal axes, and determining the offset for the vertical axis relative to a normal 1 G acceleration value for the type of accelerometer mounted on the printed circuit board;
• adjusting the accelerometer output reading from each of the three mutually orthogonal axes to add or subtract the offset for each of the three mutually orthogonal axes in subsequent outputs independent of the orientation of the accelerometer;
• and
• placing the accelerometer in a hard disk drive.