Appendix C
Computer Device States of
Operation
Table C.1 Computer Device States of Operation
Advanced Configuration
and Power Interface
(ACPI) State
Description
S0 (Working)
Normal operating state - Windows session is running
Display will dim and turn off after a time of idle. The 1, 2, Menu and Volume Up and Down
buttons are however always illuminated in state S0.
S3 (Sleep)
The device is sleeping. The Windows session is suspended to RAM, allowing a quick
resume to state S0 by:
1.
Pressing the power button
2.
Pressing a button connected to a switch port configured to have power on functionality
3.
Wake on Gaze (if enabled)
The device is consuming a small amount of power in state S3. Fully charged batteries (no AC
adapter attached) will last a minimum of 24 h in state S3.
Windows Critical battery level is monitored in state S3 to prevent the batteries from being
fully drained. The device will enter state S4 (Hibernate) if the critical value is reached.
S4 (Hibernate)
The device is in hibernation. The Windows session is suspended to the SSD (hard drive) and
the device is powered off. The session can be resumed to state S0 by:
1.
Pressing the power button
2.
Pressing a button connected to a switch port configured to have power on functionality
S5 (Soft Off)
Windows is shut down. The device is powered off. Batteries (not drained) and/or AC adapter
attached.
G3 (Mechanical Off)
All power sources removed (no batteries and no AC adapter attached).
Table C.2 Power Button Normal Operation, LED Behavior
ACPI State
Power Button Illumination
Button 1, 2, Menu,
Volume Up and Volume
Down Buttons
White Illumination
No Battery Charging
Battery Charging
S0 (Working)
Green Light
Blue Light
ON
S3 (Sleep)
Green Blinking Light
Blue Blinking Light
OFF
S4 (Hibernate)
OFF
Blue Light
OFF
S5 (Soft off)
OFF
Blue Light
OFF
Tobii Dynavox I- User’s manual v.1.4 - en-US
Appendix C Computer Device States of Operation
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