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Cooling fan Performance - FG Signal & Waveform

Cooling fan Performance - FG Signal & Waveform

Cooling fan have the third line to ouput the FG Signal expect the positive and negative two fan power lines

The role of the FG signal is calculated for the motherboard fan speed, as well as abnormal when the fan stops rotating, the signal line output high voltage signal back to the board alarm.

3Pin fan has no square wave or wave length waves, surge, may lead to the motherboard does not appear speed or velocity errors.

Oscilloscope Test

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