EXFO FTB-200 v2 Compact Modular Platform - Manual (Page 61)

Setting Up Your Unit
Compact Modular Platform 51
Recalibrating the Touchscreen
5. Using the stylus (or any blunt pointing device), simply press the center
of the different targets that appear on the screen. Keep pressing until
the application displays OK to indicate that the new parameters have
been taken into account.
Note: If you want to stop the calibration process, stop pressing the screen. The
application will close automatically after a few seconds and you will return
to the Touchscreen Calibration window.
6. When the calibration is complete, tap to close the
Touchscreen Calibration window.
New parameters taken into account
Percentage of completion