The lower matrix procedure uses the AP_COMP methodology developed by Hexagon Manufacturing Intelligence. Three registry entries are available in the ANALOG_PROBING section in PC-DMIS Settings Editor:
SP6MTXMaxForce - Set its value to 0.54.
SP6MTXUpperForce - Set its value to 0.3.
SP6MTXLowerForce - Set its value to 0.18.
The values for these registry entries are those currently recommended by Hexagon Manufacturing Intelligence during the lower matrix procedure. If the registry entries don't already exist, PC-DMIS creates them the first time you run the lower matrix procedure.
You shouldn't change the values unless Hexagon Manufacturing Intelligence issues new recommendations. The lower matrix procedure uses these values regardless of any OPTIONPROBE command that may or may not be present in the current measurement routine.
For information about the PC-DMIS Settings Editor, see the PC-DMIS Settings Editor documentation.
For more information on the lower matrix, see this Hexagon Technical Support page:
http://support.hexagonmetrology.us/link/portal/16101/16131/Article/721/What-is-a-Lower-Level-Matrix