Advantech RUGGED PENTIUM IPPC-9120 - Manual (Page 100)

Chapter 8 Touchscreen
8 5
5. a.. After system reboot, select "Start," "Programs, "PenMount Utilities"
and "PenMount Control Panel"
b. Press "Calibrate" tab
c. Press "Calibrate" button on the right side
6. a. Use a soft stylus to press the little red dot located above the pointer
b. Repeat the process at the specified locations