Chapter 2
Installation and Configuration
NI PXIe-1071 User Manual
2-6
ni.com
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 vent on the bottom of the chassis. Note that this
temperature may be higher than ambient room temperature depending on
the surrounding equipment and/or blockages present. You must ensure that
this ambient temperature does not exceed the rated ambient temperature as
stated in Appendix A,
Specifications
.
Setting Fan Speed
The AUTO/HIGH fan-speed selector switch is on the rear panel of the
NI PXIe-1071. Refer to Figure 1-2,
Rear View of the NI PXIe-1071
Chassis
, to locate the fan-speed selector switch. Select HIGH for maximum
cooling performance (recommended) or AUTO for quieter operation.
When set to AUTO, the chassis intake air temperature determines the fan
speed.
Installing Filler Panels
To maintain proper module cooling performance, install filler panels
(provided with the chassis) in unused or empty slots. Secure with the
captive mounting screws provided.
Installing Slot Blockers
You can improve the chassis cooling performance by installing optional
slot blockers. Refer to
ni.com
for more details.
Rack Mounting
Rack mount applications require the optional rack mount kits available
from National Instruments. Refer to the instructions supplied with the rack
mount kits to install your NI PXIe-1071 chassis in an instrument rack.
Refer to Figure A-3,
NI Chassis Rack Mount Kit Components
.
Note
You may want to remove the feet from the NI PXIe-1071 chassis when rack
mounting. To do so, remove the screws holding the feet in place.
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