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Options available on the Calibration tab

A - You can select where you want to perform the geometric calibration. Usually you have one display connected to the computer but you can have two or more displays.


B - If you have a simple setup, such as, one Displax Skin Sensor on top of a screen you just need to click on the calibrate button to perform a simple 4 points calibration.

For more complex setups, such as, one Displax Skin Sensor with a size smaller than the size of the screen you should click on the "+" button to access more calibration points or use the Drag calibration mode. 



C - Touch Test application. Is a simple application used to test the touch performance and geometric calibration. 



Advanced Calibration method 

When a single sensor is used on top of two or more LCDs, to overcome the bezel between the LCDs you may have to use more than 4 calibration points.

You can use 9, 16, 25 or 36 calibration points.

When you select the number of points they will be shown on all the LCDs in use. The optimal calibration is the one in which the points on the different LCDs are positioned almost in the same relative position on the different LCDs. The user should access which combination of points (9, 16, 25 or 36) offers a closer equidistance of points between the two or more LCDs to obtain an optimal sensor calibration.

After selecting the number of calibration points a black screen with the chosen calibration points will be displayed and an instruction will be presented ‘To start calibration, touch on the target until it disappears. Repeat the process for the remaining points’.


Advanced Calibration - Drag Mode 

The drag mode in the advanced calibration is used when the active Touch Sensor area is smaller than the LCD.
The ‘Displax Connect’ control panel will be displayed on the entire LCD screen, but as the Touch Sensor is smaller than the LCD you have to define the area that is being covered by the Touch Sensor.
To start the calibration process of custom areas, first you have to select 4 calibration points, as you should do on a regular calibration process.

When the 4 calibration points are shown, you have to click on the key ‘A’ of your keyboard. Pressing it a message will be displayed ‘Please select the area’.



To select the area, click on the left button of the mouse at one of the Touch Sensor active upper corners and then move the cursor on the diagonal towards the opposite lower corner of the Touch Sensor active grid. When you start selecting the area, you will notice a transition from a red area into a green area. A red area means that the area is too small for calibration.



When the selected area is enough to be calibrated the selected area turns green.



After lifting the finger from the left mouse button, an instruction message and four calibration points will be displayed – ‘To start calibration, touch on the target until it disappears. Repeat the process for the remaining points’.




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  1. Tiago Barbosa

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