IBM 4820, System Reference Manual

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Table 14-2. Summary of touch todes
Touch mode How to click How to double-click How to drag
Desktop Touch the object and
lift your finger.
Touch twice in quick
succession in the same
place.
Touch the object,
pause briefly, and slide
your finger.
Drawing
Button
Touch the object Click
Not supported
Lift-off
Touchdown Touch the object.
Provides a pause for
user to receive visual
feedback that a button
was pressed and
released.
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
setting.
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