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Product Notification: Possible System Hang with Third-Party PXI Modules for

some National Instruments PXI Systems with a 64-bit Operating System.

There is a limitation with some National Instruments PXI and PXI Express chassis which may cause a

system hang or crash if a PXI, PXI-1, or hybrid-compatible PXI module attempts 64-bit memory addressing

transactions. This limitation occurs when a PXI-1 or hybrid-compatible module attempts memory

transactions in affected PXI systems running a 64-bit Operating System (OS) with more than 4 GB of system

RAM. This limitation impacts PXI-1 and hybrid-compatible PXI modules using 64-bit memory transactions

only; there is no impact on PXI Express modules.

The following chassis may exhibit this behavior if 64-bit memory addressing is used to communicate with a

PXI-1 or hybrid compatible PXI module:

 NI PXI-1033

 NI PXIe-1062Q

 NI PXIe-1065

 NI PXIe-1071

 NI PXIe-1073

 NI PXIe-1075

 NI PXIe-1082

NI has updated certain hardware drivers for its PXI modules to resolve this limitation. Please visit

ni.com/info and enter the Info Code PXI64HANG for additional information regarding driver changes that

address this constraint.

Action Required

If you are using a 32-bit OS in standard, non-PAE mode then you are not affected by this limitation and no

further action is required.

If you plan to upgrade the OS on an existing PXI system to a 64-bit OS; then we request you to upgrade to the

latest NI hardware drivers in order to avoid this limitation.

If you are using a third-party PXI-1 or hybrid compatible PXI device in your chassis that uses 64-bit memory

addressing please refer to the Knowledgebase article linked by the Info Code above.