User guide

Dell Latitude E6420 XFR Setup and Features Information
Page 13
General
The general property page shows all the eGalaxTouch touch screen controllers installed including RS232, USB and PS2
interfaces. The touch screen controller is a USB device.
Tools
The Tools property page provides the following information and functions.
NOTE: Your touch screen is configured and calibrated at the factory. However, if you notice that the calibration is not as precise
as you would like, you can use the 4 Points Calibration and/or the Linearization tool to provide a more accurate alignment of the
touch screen.
• Graph of the Linearization Curve of the touch screen: For reference and troubleshooting purposes. See its usage in
the discussion of the Linearization function.
• 4 Points Calibration: Calibration aligns the touch panel with the video screen. The touch screen must be calibrated to
allow for positional accuracy of the stylus or finger touch inputs.
• Clear and Calibrate: Clears the calibration/linearization parameters and allows you to perform the 4 points calibration
again.
• Linearization (9 or 25 points linearization is set within the Setting tab): The linearization function provides for more
precise mapping of the stylus or finger touch inputs. After linearization is completed, the linearity of the touch screen
will be shown in the Linearization Curve window.
• Draw Test: Used for accuracy and performance checking.
1. 4 Points Calibration
The touch screen must be calibrated before it can work accurately. This function pops up a new window to guide you
through the 4 points calibration. You should follow 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 is not touched before the time line bar
reaches the right end, the calibration task will be terminated automatically.
2. Linearization
This function provides for more accurate touch screen positional alignment. The linearization function pops up a new
window to guide you through the 9 or 25 points calibration. Configuring the function for 9 or 25 points calibration is accessed
in the
Setting tab. You should follow 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 the time elapsed. If the touch screen is not touched before the time line bar reaches the
right end, the calibration task will be terminated automatically.
3. Draw Test
This function is used for accuracy and performance checking. You can use the stylus or finger touch to draw or write across
the displayed area.
You can press the Clear button to clear the window. Press the Quit button to terminate the draw test.
Setting
The Setting property page provides the following buttons and check boxes:
1. Beep
• Beep On Touch
Check this check box to enable driver to generate a beep sound when touch touchscreen state is switched from
untouched to touched state.
• Beep On Release
Check this check box to enable driver to generate a beep sound when touchscreen state is switched from
touched state to untouch state.
• Frequency
Adjust this frequency to control the beep sound frequency generated by the driver.
• Duration
Adjust this duration to control the beep sound duration.