Touchscreen Properties Dialog Box; Calibrating The Touchscreen - IBM 4820 System Reference Manual

Touchscreen properties dialog box

Problem
You have touch, but cannot open the

Touchscreen Properties dialog box.

The Touchscreen Properties dialog box always
opens to the Hardware tab

Calibrating the touchscreen

Calibration defines the dimensions and center of the active area of the touchscreen.
Calibration also aligns the touchscreen-active area to the underlying . Calibrate your
touchscreen when:
v You initially install the TouchWare
v The cursor does not accurately follow your finger movement
v You change the resolution or mode
v You adjust the touchscreen controller frequency using the Stabilize Cursor function
v You enable or disable the Filtering option
Note: During calibration, the lift-off position of your touch, and not the touchdown
1. Allow the 4820 SurePoint Solution to warm-up at least one-half hour before you
begin calibration.
2. Open the Touchscreen Properties dialog box. Select the Calibrate tab.
3. Click Calibrate. A calibration target appears in the lower left corner of the screen.
4. Touch the touchscreen and position your fingertip to completely cover the target.
Hold your touch for at least three seconds.
5. Lift your finger off of the screen when you are satisfied that you accurately touched
the target.
6. Touch the touchscreen and position your fingertip to completely cover the next
target. Hold your touch for at least three seconds.
7. Lift your finger off of the screen. The program saves the new calibration values and
displays the following dialog box:
8. Test the calibration as follows:
a. Touch random points on the screen and check that the system locates the
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4820 SurePoint Solution System Reference
position, determines the calibration point. If your finger is not correctly positioned
on the screen, you can slide your finger to the center of the target. Hold your
finger as still as possible after you reach the calibration point. Do not use any
lateral motion during lift-off.
cursor underneath your finger.
Recommended Action
Only the touchscreen USB driver was installed
and the TouchWare was not completely
installed. Unplug your touchscreen from the
USB port and reinstall the TouchWare.
The TouchWare is unable to find or
communicate with the touchscreen controller.
v Check the Controller Information box on the
Hardware tab. If the OK message displays,
contact technical support.
v If the message NOT FOUND displays, review
the cable connections