ADLINK Express-HRR - Manual (Page 36)

Chapter 3 Hardware
32 Reference Manual Express-HRR
System Fan
Table 3-7 lists the pin signals of the System Fan interface, which provides a 3-pin, single-row header with
0.049" (1.25mm) pitch.
Note: The shaded table cell denotes power or ground.
Table 3-7. Optional System Fan (FAN1)
Pin # Signal Description
1 HWM_PWM2 Modulation – This signal controls the fan speed
2 VCC +5.0/12.0 volts DC +/- 5%
3 HWM_TACH2 Fan Tachometer – This signal monitors the fan speed