The basic inertial data output from DMU30 is angular rate (deg/s) and acceleration (g). Delta Theta and Delta Velocity outputs can be considered as a re-scaling of these basic data outputs. Provision and use of these values is an industry standard expected and used by many of our customers.
Delta Theta is in degrees and represents the degrees rotated over the sampling time of 5.0ms (or 1/200th of a second). For example, if the IMU axis is rotating at 200deg/s, Delta Theta will be 1 deg.
Similarly, Delta Velocity is a re-scaling from g to m/s, representing the change in velocity change over the same 5ms. The output in m/s is equal to the acceleration in g multiplied by 0.04903325 (divide by 200 and multiply by 9.80665, the latter being a universal measure of g).