Forums Members Recent Posts Forums Spectran Developer ... SPECTRAN Tuning / P... NF 3D sensor/quadratic... Notifications Clear all 3D sensor/quadratic mean Last Post RSS shabnam (@shabnam) New Member Joined: 4 years ago Posts: 1 Topic starter 10/05/2018 7:25 pm You have mentioned that the 3D sensor is the "quadratic mean" which is the square root of [ 1/3 (X^2 + Y^2 + Z^2)] when n=3. In the manual, you mention the square root of X^2+Y^2+Z^2. Please explain. Thanks. Quote Share: