Calibration Using Putty (Use this method if you can’t enter Z menu configuration as shown in step A)
To calibrate your cpad if the touch screen is far out of calibration.
1: Download Putty which is open-source if you already don't have similar terminal.
Type in IP address of your cPad as shown and click Open
Login as: root
Type the following command to run
# source /etc/qt4-env “ Enter” (note: there is space in between source & / )
# ts_calibrate “Enter”
Once this two commands are send to the cpad you can walk to the capd and perform calibration.
Step 3: Touch screen cross hair to calibrate
Step 4: Exit the Putty and reboot the cpad.