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Auto Power OFF Function (APO)
This function automatically shifts the system to the OFF state (suspend state) if no event has taken
place for a specified period of time from the touch panel, the keyboard, COM1, or a file.
This time interval has been set to one minute by default. It can be modified using the System Menu
or system library.
About the activity
Any access to the touch panel, key, COM1, or file that causes results in Auto Power OFF is
defined as "an activity", and it is said that "an activity occurs" if one of these devices is accessed.
In other words, the Auto Power OFF function can be said to have shifted the system to the
suspend state if no activity has occurred for a specified period of time.
The term "activity" is also used in the later description of the ABO function, but it has a different
meaning.
Activity monitored by APO:
Touch panel input
Key input
Access to files
Access to COM1
Auto Backlight OFF Function (ABO)
This function automatically turns off the backlight if no access to the touch panel or keys has been
attempted for a specified period of time. This time interval has been set to twenty seconds by default.
It can be modified using the System Menu or system library. Touch panel or key sensing is
performed by the keyboard controller. This keyboard controller not only processes key input or
touch panel input, but it also simultaneously detects activity while executing various background
processes. Consequently, the limit value set as the Auto Backlight OFF time will not be accurate
down to the seconds. The accuracy of this setup value is 10 percent.
Activity monitored by ABO:
Touch panel input
Key input