BenQ TL650 Service Manual page 106

Calibration Procedure
1. Run TSCU by clicking its icon in the system tray or Windows Control Panel.
2. Click on the [Calibrate] button to initiate the calibration procedure.
3. The cursor indicates 4 successive calibration points on the screen. The user has to touch and
hold each calibration point for 3 seconds. After successfully detecting a calibration point, the
cursor automatically moves to the next point.
4. Press "ESC" at anytime to cancel calibration or close the tool.
For improved performance, it is recommended that all NextWindow touch screen should be
calibrated before initial use.
This completes the calibration procedure.
Calibration Notes
Make sure each calibration point is touched accurately.
Instruct the user to lift their finger straight up off the screen without dragging.
Test the calibration by moving the mouse pointer around the screen checking that it closely
follows the touch.
If the calibration is not satisfactory, the user can re-calibrate.
A small stylus should provide a more accurate result than a finger. Make sure the user does
not use anything too sharp (which may scratch the glass), or too small (the touch screen may
not detect styli smaller than 4 mm diameter).
The [Restore Defaults] button can be used to restore factory calibration.
4. Cleaning the Touch Screen
To clean the touch screen, use a lint-free and soft cloth as follows:
1. Wipe the glass of the touch screen to remove any dirt, dust, or finger marks.
2. Wipe the clear acrylic surfaces around the side and bottom edges of the screen.
Notes : Do not use an abrasive cleaner or rough cloth as this could damage the optics.
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