NCR RealPOS 72XRT POS, User Manual

Page: 86 / 202

4-74 Touch Screen Calibration
Verifying the Calibration
1. Select the Tools tab.
2. Select the DrawingTest button.
3. Test the calibration on the draw screen.
Touch the screen in various spots and trace each of the horizontal and vertical lines,
including the border around the screen.
In this test, all touches are persistent, including touch downs (green dots) and touch
ups (red dots).
After tracing the lines, review the drawn lines to make sure they closely follow the
underlying pattern. Pay close attention to the edges of the display and the corners
since this is where an incorrect calibration is most noticeable. If a line or point
appears to be outside the pattern, try pressing the area to see how far the cursor is
from the touch point. If the registered touch is greater than 7 mm away from where
the touch occurred, repeat the calibration.
4. Select Exit to close this screen and to return to the Microchip TSHARC Control
Panel.
5. Select the Calibration tab to repeat the calibration procedure or select Apply and
then OK if you are satisfied with the results and want to close the application.