From 6:00 PM CST Friday, Feb 15th - 2:00 AM CST Sunday, Feb 17th, will be undergoing system upgrades that may result in temporary service interruption.

We appreciate your patience as we improve our online experience.

5 Things You Didn't Know About Your PXI Chassis (Part 1 of 3)

Publish Date: Apr 20, 2015 | 3 Ratings | 4.67 out of 5 | Print


You already know that NI PXI Express chassis feature nanosecond latency, stream up to 24 GB/s with PCI Express 3.0 technology, and handle a peak operational shock of 30 g, but they can do a lot more than that.

Here are 5 things you probably don’t know your NI PXI chassis offers you.

Table of Contents

Continue to Part 2 →

1. Fan Module LED Indicators

The NI PXIe-1085 features three field-replaceable fan modules on the rear of the chassis that cool the power supply and instrumentation. The LED at the top of each fan module indicates if the fan is operating normally (green) or if it has failed and needs to be replaced (red).

If one fan fails, the two remaining fans switch to High to compensate. Because the fans are ”hot swappable,“ you can change the faulty fan with a new fan while the chassis is running. If two fans fail at the same time, the chassis shuts down to protect the controller and modules in the system.

For more information on replacing the fan modules of the NI PXIe-1085 chassis, refer to pages 3–6 of the User Manual.

Figure 1. A Fan Module on an NI PXIe-1085 Chassis Operating Within Normal Range


2. Temperature Monitoring

The NI PXIe-1085 has many temperature sensors throughout the chassis. These temperature readings give you the ability to understand the operating temperatures of your system and instruments for troubleshooting purposes, and some temperature readings are even used in the fan speed algorithm of the chassis.


Description: Untitled:Users:afoster:Desktop:14 Things White Paper:temp sensors.png

Figure 2. NI PXIe-1085 Chassis With Top Casing Removed to Show Four Outlet Air Temperature Sensors (front of chassis is at bottom of image)


Along with the temperature readings, information about the chassis and other hardware can be programmatically accessed in LabVIEW system design software using the NI System Configuration API.


3. Ergonomic Feet for Benchtop Use

Design and validation engineers often use PXI on a benchtop. You can adjust the front feet of the NI PXIe-1085 down to elevate the front of the chassis by 1 in., making it much more ergonomic to use.


Figure 3. The front feet of the NI PXIe-1085 elevate the chassis by 1 in. for benchtop use.


4. Field-Replaceable Power Supply

Instrumentation power supply failures are costly for most automated test systems. You can easily access, remove, and replace the power supply of the NI PXIe-1085 from the rear of the chassis to avoid de-racking the chassis or removing I/O connections.


Figure 4. Removing the Field-Replaceable Power Supply Shuttle of the NI PXIe-1085 Chassis


5. All-Hybrid Slots

You can insert both PXI Express and PXI (hybrid-compatible) modules in the NI PXIe-1085 chassis because all 16 peripheral slots are hybrid slots.


Figure 5. The NI PXIe-1085 features 16 hybrid peripheral slots.


This can be verified by referencing the slot glyphs for each peripheral module slot in the chassis. The glyph indicates the type of module that can be inserted into the slot as specified in section 3.13 of the PXI Express Hardware Specification.


Description: Untitled:Users:afoster:Desktop:Screen Shot 2015-03-27 at 11.10.45.png

Figure 6. PXI Express Chassis Slot Glyphs


Continue to Part 2 →


Additional NI PXI Chassis Resources


Back to Top

Bookmark & Share


Rate this document

Answered Your Question?
Yes No