VTouch 5-Wires Resistive Touchscreen User Manual
19
1. Linearization Curve
Linearization curve of the touch screen is list in this page for reference and trouble
shooting purpose.
2. 4 points calibration
It needs calibration before the touch screen can work accurately. Whenever the user
feel the accuracy lost, user can do calibration again to get a more accuracy touch
function.
Pressing this button, a new window will be popped-up at the location when the touch
screen was mapped to area for this touch system to guide the user do 4 points
calibration.
User should follows the guide to touch and hold the blinking X symbol in the calibration
window until it does not blink to make sure that the utility can gather enough data for
computation. In addition, a time line bar is shown in the bottom of the window to
indicate time elapsed. If the touch screen was not touched before the time line bar
going to right end, the calibration task will be terminated
automatically.
3. Clear and Calibration
Press this button to erase the 25 points calibration/linearization parameters and force
user to do 4 points calibration again. After 25 points calibration data was clear, the 4
points calibration data will be invalid. It needs to do 4 points calibration.
4. Linearization
Linearization ( 25 or 9 points calibration ) function is used to compensate the touch
screen linearity. After linearization completed, the linearity of the touch screen will be
shown in the Linearity curve window.
Pressing this button, a new window will be popped-up at the location when the touch
