Advantech PCA-6275 manual Introduction, Installation of OBS Devices

4.1Introduction

On-board security (OBS) functions monitor key hardware. They help you maintain your system's stability and durability.

The PCA-6275 can monitor 5 sets of system positive voltages, 2 sets of system negative voltages, CPU cooling fan speed, and CPU temperature.

The positive system voltage sets which can be monitored include:

•CPU core voltage: 1.7 V ~ 3.3 V, according to Intel specifications

•Transmission voltage from CPU to chipset: typically 1.5 V

•Chipset voltage: typically 3.3 V

•Main voltage: +5 V, +12 V

The negative system voltage sets which can be monitored include:

•Main voltage: -5 V, -12 V

4.2Installation of OBS Devices

After you have mounted the CPU and cooling modules, enable the OBS functions as follows:

1.Take the specially designed temperature sensor cables out of the accessories bag.

2.Connect the 2-pin header of each cable to connector RT1 and RT2 respectively.

3.Attach the sticker to the heat sink, but NOT on the plastic portion of the heat sink.

4.Place the sensor on the nearest part of the CPU, to ensure that true CPU temperature is measured.

46PCA-6275 User's Manual