Chassis Cooling Considerations; Providing Adequate Clearance - National Instruments PXI Express Series User Manual

Chapter 2 Installation and Configuration

Chassis Cooling Considerations

The PXIe-1084 Series chassis is designed to operate on a bench or in an instrument rack.
You must adhere to the cooling clearances as outlined in the following section.

Providing Adequate Clearance

The module and power supply exhaust vents for the PXIe-1084 are on the top of the chassis. The
module intake vents are on the rear of the chassis. The vent locations are shown in Figure 2-2,
PXIe-1084 Chassis Vents.
Adequate clearance between the chassis and surrounding equipment, heat generating devices,
and air flow blockages must be maintained to ensure proper cooling. Minimum cooling
clearances are shown in Figure 2-1,
For rack mount applications adequate forced air ventilation is required. For benchtop
applications additional cooling clearances may be required for optimal air flow and reduced hot
air recirculation to the air inlet fans.
Failure to provide these clearances may result in undesired
Caution
thermal-related issues with the chassis or modules.
To aid in thermal health monitoring for either rack or benchtop use you can monitor the chassis
intake temperatures in Measurement & Automation Explorer (MAX) to ensure the temperatures
do not exceed the ratings in the Operating Environment section of the PXIe-1084 Specifications.
Additionally, many PXI modules provide temperature values you can monitor to ensure critical
temperatures are not exceeded. Increasing chassis clearances, ventilation, reducing external
ambient temperatures, and removing nearby heat sources are all options for improving overall
chassis thermal performance.
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PXIe-1084 Chassis Minimum Cooling Clearances.