User manual

Operating Modes

General

The D2 BASIC- CPU provides power management functions dependent on the

installed Operating System (OS).

Normal Mode/Standby Mode

Switching on

Normal Flex ATX Power Supply will be used in D2 BASIC- CPU based systems.

Connecting the PSU via AC line the Standby voltage P5VSB is supplied and the

system is ready to be switched on (Standby mode). There are several

possibilities to switch on the system.

The “regular” way to switch on the system is to activate the temporary switch at

the frontside of the system.

Î Short pressing the temporary switch will switch on the system.

For powering up the system via LAN the Onboard PCI connector is provided

with the “Wake up” signal and the Standby voltage P5VSB.

Last not least the RTC can be used to switch on the system.

Switching Off

The system may be switched off either by activating the temporary switch at the

frontside of the system or under Software Control.

Î Pressing the temporary switch longer than 4 seconds will switch off the

system.

Power Failure

If the main power fails (AC input) for longer than 20 msec, the loss of Standby

Voltage results in powering down the system.

After the main power returns the system responds depending on the BIOS

Setup setting. If in the BIOS Setup “Restore” is chosen, the system enters the

state before Power failure. If in the BIOS Setup “Stay Off” is chosen, the system

stays off.