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Chapter 6: Touch Screen Calibration – DOS 6-3
2-Point Calibration
1. Select the T ools menu ( Alt T ).
2. Highlight Calibrate 2 point and press Enter .
3. Enter Y es to continue.
4. Touch the screen near the calibration target.
5. Keep your finger on the screen and slide it to the center of the
target. Hold your finger firmly on the target for two seconds, then
lift it off.
6. Test the calibration by moving your finger around on the screen
and verifying that the cursor follows your finger. It is also
suggested that you Touch all 4 Corners and verify that the cursor
moves deeply into the corners.
7. Verify that the calibration was set accurately before making a
service call. Perform the calibration again if necessary.
Noise Check
If the cursor is not stable, or false touches are suspected, run the Noise
Check from the Microcal program. Choose the recommended frequency
(the one with the lowest noise level). This should also be done if the
Touch Screen is still not calibrated after one attempt to recalibrate it.
1. Set the video resolution. From the T ools menu, select 800 x 600
256 colors
(for a 12” display) or
1024x768
(for a 15” display).
2. From the T ools menu, select Noise Check .
3. Enter Y es to continue. Do not touch the screen during the test. Press
the space bar to start the test.
4. Follow the instruction prompts. Choose the frequency with the
lowest noise level.
5. Perform the 2 ‐ Point Calibration procedure.
If you experience erratic behavior with the Microcal Utility, then
perform a Reset function from the Tools menu.