The National Instruments PXIe-8394 is a MXI-Express module for PXI Express systems. It provides a high speed link between a host computer and a PXI Express chassis, allowing the host to control PXI Express modules as if they were installed in the computer. The module is used in automated test, laboratory measurement, and industrial systems where the PXI hardware must be placed near the device under test while the computer remains in a control area.

MXI-Express extends the PCI Express bus over a cable. This architecture separates computing resources from measurement hardware, supports easier host upgrades, and allows flexible test station layout. The PXIe-8394 brings this capability to the PXI Express platform.

High Speed Remote Control

The module provides a high speed link between the host and the PXI Express chassis. Engineers should verify cable length, link bandwidth, and software configuration. The link should be secure and strain relieved.

Remote control supports separation of the computer from the test hardware. This is useful when the test cell has limited space or harsh conditions. The computer can be upgraded without replacing the PXI chassis.

PXI Express Integration

The module operates in compatible PXI Express chassis and host systems. It uses the PXI Express backplane for module communication. Engineers should verify slot compatibility, power requirements, and cooling.

System documentation should include link settings, cable routing, and host configuration. This helps maintenance and troubleshooting.

Applications

The PXIe-8394 is suited to automated test, laboratory instrumentation, production validation, and research systems. It supports flexible placement of PXI Express hardware and host computers.

Installation and Maintenance

Installation requires inserting the module into a compatible slot and connecting the MXI-Express cable. Cables should be routed to avoid strain and interference. The chassis and host should provide adequate cooling.

Maintenance includes checking cable connections, verifying link status, and reviewing software configuration. Documentation helps reliable operation.

Summary

The National Instruments PXIe-8394 MXI-Express Module provides a high speed remote control link for PXI Express chassis. It supports separation of measurement hardware from the host computer and flexible test station design. The PXIe-8394 is a practical module for engineers who need remote PXI Express control.