Acer Smart Touch Kit II User Manual page 32

Auto-Calibration process failure
 Select "Adjusting Webcam Image Mode" from the "Installation and
adjusting" menu. Check whether the webcam image is being displayed
well or there are symptoms like dazzling screen, white screen, black
screen and flickering screen.
 Shift "Adjusting Webcam Image Mode" to "Tuning Laser Transmitter
Image Mode" twice. Check whether the brightness of webcam image is
changed. If there is always a dark screen. Please use another camera.
 Check the failure calibration pictures. Analyze the overall image
brightness of "black and white checkerboard." If the overall brightness is
high, please adjust the value of auto-calibration "average image
brightness" down to 40, the value of "Light Gray" up to 250. If the overall
brightness is low, please adjust the value of auto-calibration "Average
Brightness" up to 140, the value of "Light Gray" up to 250.
 Please contact the factory or do manual calibration if the problem
persists.
Inaccurate performance on top corners or non-smooth
writing
 Open the calibration software IWB icon, write in the non-smooth area. If
there is no lightspot in the non-smooth area, please replace with another
emitter.
 If there is a lightspot, but the lightspot is small, please adjust the value of
brightness coefficient up to around 170.
 Do lightspot sampling
 Select "config" file from "installation directory" in calibration program.
Please adjust the value of Minimum Width and Light Spot Minimum
Height down to 1.
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