© National Instruments
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2-3
NI PXIe-1082 User Manual
Figure 2-2.
NI PXIe-1082 Vents
Chassis Ambient Temperature Definition
The chassis fan control system uses intake air temperature as the input for controlling fan speeds
when in Auto Fan Speed mode. Because of this, the chassis ambient temperature is defined as
the temperature that exists just outside of the fan intake vents on the rear of the chassis. Note that
this temperature may be higher than ambient room temperature depending on the surrounding
equipment and/or blockages present. It is the user’s responsibility to ensure that this ambient
temperature does not exceed the rated ambient temperature as stated in Appendix A,
Specifications
. If the temperature exceeds the stated spec the power switch LED will blink green,
as discussed in the
Power Inhibit Switch LED Indicator
section of this chapter.
1
Primary Air Exhaust Vent
2
Air Filter
3
Primary Air Intake Vent
4
Secondary Air Intake/Exhaust Vents
2
3
4
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