Themis RES-22DCX, Installation Manual

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Overview and Specifications
Overview
1-7
Themis Computer
1.1.1 Special Features
1.1.1.1 Recovery from AC Power Loss
The BIOS setup can be configured to allow the system, whenever AC power is lost,
• to remain off (in which case, the power switch must be activated by the user) or
• return to a power-on state automatically when power is restored.
The system default is “
Always On
”.
1.1.1.2 Voltage Monitors
A built-in voltage monitor continually scans multiple voltages (CPU cores, chipset
voltage, +3.3V, +5V, +12V, –12V, and +5V standby) on the motherboard. If a voltage
becomes unstable, it issues a warning or sends an error message to the screen. Volt-
age thresholds can be adjusted through the PC health-monitor utility to define the
sensitivity of the voltage monitor.
1.1.1.3 Fan Status Monitor
The RES-22DCX has ten cooling fans—two 60-mm fans within each fan assembly
at the front of the system, one on each CPU, and two within each power supply. The
PC health-monitor utility can be used to check the RPM status of cooling fans. The
onboard CPU and chassis fans are controlled by Thermal Management via BIOS.
1.1.1.4 Environmental Temperature Control
The thermal-control sensor monitors CPU temperature in real time and will activate
the thermal fan when CPU temperature exceeds a user-defined threshold. Overheat
circuitry operates independently from the CPU, and can continue to monitor over-
heat conditions even when the CPU is in sleep mode.
Once the thermal sensor detects a CPU temperature that is above the set threshold, it
automatically turns on the thermal control fan to prevent overheat damage to the
CPU. In addition, onboard chassis thermal circuitry can monitor overall system tem-
perature and alert users when chassis temperature exceeds a user-defined threshold.
1.1.1.5 CPU Fan Auto-Off in Sleep (Doze) Mode
The CPU fan activates when power is turned on, and continues to operate when the
system enters
Standby
mode. In
Sleep
mode, the CPU will not run at full power,
generating less heat. Sleep settings are made through the PC health-monitor utility.