The instrument’s inclination around the X and Y axes is not measured directly. It is calculated by the Instrument_Manager application, from the components of the earth’s gravity along the three axes. So in order to display inclinations, the instrument must be setup to record acceleration statistics, and at least record the average accelerations along the X, Y and Z axes, with no high-pass filter.

After recording, the average accelerations along the X, Y and Z axes can be displayed by the Instrument_Manager application as individual-axis accelerations, or as inclinations.

Using the three components of acceleration along the X, Y and Z axes, the inclinations around the X and Y axes can be calculated. These are named:

Theta and Phi are displayed in the Static tab, along with a graphical depiction of the instrument in real time.

In addition to the inclination angles, the application calculates the norm of the acceleration. If the instrument is stationary, and only subjected to slow changes in inclination, and is properly calibrated, the norm of the acceleration should always be constant and equal to 1g.