Selecting A Touch Mode; Configuring The Touch Sound; Connector Pinouts; Usb Power Voltage - IBM 4820 System Reference Manual

Table 14-2. Summary of touch todes
Touch mode
Desktop
Drawing
Button
Click
Lift-off
Touchdown

Selecting a touch mode

Use the Touch Settings tab or the Special tab to select a touch mode. Some touch
modes require you to select options on both tabs.

Configuring the touch sound

You can configure your touchscreen so that a beep is produced when you touch the
screen, or when you remove your touch. To enable or disable the touch sound:
v Select the Touch Settings tab to access the Touch Sound option.
v Click Beep to cycle through the choices:
– Beep on touchdown produces a beep when you touch the screen
– Beep on lift-off produces a beep when you lift your finger off the screen.
– Beep off produces no sound when you touch the screen. This is the default

Customizing the touch sound

If you enable the touch sound, you can customize the frequency, or pitch, and duration
of the touch sound. To customize the touch sound:
v Select the Special tab to access the Custom Touch Sound options.
v Click the right and left arrows to change the frequency, or pitch, and duration of the
touch sound. The range of settings are as follows:
– Frequency: 200 to 5000 Hz in 10 Hz increments; the default is 1500 Hz
– Duration: 50 to 600 mx in 10 mx increments; the default is 200 mx

Connector pinouts

This section describes the connector pinouts.

USB power voltage

The powered USB cable should provide approximately 12 volts DC to the 4820
SurePoint Solution. Table 14-3 on page 14-5 describes the pins and provides an
14-4
4820 SurePoint Solution System Reference
How to click
Touch the object and
lift your finger.
Touch the object
Touch the object.
Provides a pause for
user to receive visual
feedback that a button
was pressed and
released.
setting.
How to double-click How to drag
Touch the object,
pause briefly, and slide
your finger.
Touch twice in quick
succession in the same
place.
Not supported