Rockwell Automation 2727-M7P20D1P1, -M7P20D1Q2,-M7P20D1Q3 MobileView Machine Terminal MT750 - Manual (Page 36)

Publication 2727-UM003D-EN-P
3-4 Configuring the MobileView Terminal
Touch Screen Calibration
To calibrate the touch screen, tap the Calibrate Touch button. An
image with a white background, a cross hair target in the center of the
screen, and instructions at the top, will appear. Simply follow the
instructions to complete the calibration. For best results use a stylus.
Setting the Handwheel to Zero
The Handwheel tab calibrates the electronic handwheel of the
MobileView terminal.
The handwheel registers a 16-bit value (-32768 to +32768) which can
be processed in the target application as needed and is calibrated for
50 pulses per revolution. Every single increment of the handwheel is
equal to a value of 1.
To calibrate the handwheel:
1. Move the handwheel to the desired start position.
2. Tap the Reset button on the Handwheel tab of the MobileView
Config dialog.
The handwheel slide bar will move to the leftmost tick mark and
the actual value will be reset to a start value of 0.
ATTENTION
!
Do not use a sharp object, such as a screw driver when
operating the touch screen. Using sharp objects may
damage the touch screen.