Hitachi SA200 manual Full Power Mode, Power Management

lonestar.boo : sa200.fm Page 67 Friday, March 6, 1998 10:53 AM

5 The Power System

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Full Power

Power Management Suspend to RAM Suspend to Disk

Each power management mode works for both AC and battery- powered operations. To change your laptop’s PM settings, run the Power Saving Setup in the BIOS Setup program. See “Power Saving Menu” be ginning on page 96 for more information.

Full Power Mode

Your laptop operates in Full Power mode when you set Heuristic Power Management to Disabled in the BIOS Setup program. This option is located on the Power Saving Menu. In Full Power mode, all power management features are disabled. Use this mode only when you are operating the SA200 with the AC adapter.

Power Management

Power management allows you to maximize system performance while saving power. The SA200 uses an innovative power management technique called Heuristic Power Management.

Most computers use timer-based power management. You set timeout timers to determine when the computer should save power on a device. The problem with this is that no two users are alike. Each one of us has his or her own habits when using the computer. This makes timer-based power management ineffective.

Heuristic Power Management allows your computer to manage all power management. You do not need to set timers because the computer dynamically sets timeout timers depending on how you use the computer.

The LCD screen and backlight come on when you use the keyboard or move the pointing device, and the hard disk returns to full power the next time it is accessed.

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