User parameters are names for variables that you can control. Parameters can be used as adjustable values in calculated columns and fields that would otherwise use a fixed value. For example, the position data gathered from a Motion Detector can be used to find both gravitational and spring potential energy (mgh and 0.5kx2). The goal is to plot total energy of mass on a spring in harmonic motion. The velocity data are used to find kinetic energy from 0.5mv2.
Rather than setting k and m as fixed values, they can be set up as user parameters in the calculated columns.
After plotting these columns, and choosing Parameter Control from the Insert menu, you can increase and decrease the values for k and m and see the effect of theses changes displayed on the graph.
Note: Created parameters only apply to individual files. They will be saved when your file is saved.
Another example is controlling the trigger level with a parameter, and being able to adjust it while Logger Pro is waiting to take data.
Also, the analog out frequency can be controlled on the fly using a parameter and a control.