Product Overview

The National Instruments PXIe-8388 is an MXI-Express x16 controller for PXI Express systems. It is used to connect a host computer to a PXI Express chassis over a high bandwidth cable link. The controller enables remote control of PXI Express instruments and modules while keeping the host computer separate from the measurement chassis.

The PXIe-8388 is part of the NI MXI-Express family. It is suitable for test systems that require a desktop or rack mounted computer to control one or more PXI Express chassis. The x16 link provides high data throughput for applications such as high speed digitizing, RF measurement, and multi channel data acquisition.

High Bandwidth Remote Control

The PXIe-8388 uses an MXI-Express x16 connection to provide high bandwidth communication between the host and the PXI Express chassis. This is important when large amounts of data must be transferred or when multiple instruments operate at the same time. The controller supports transparent control of PXI Express modules from the host software environment.

Remote control with MXI-Express allows the PXI Express chassis to be placed at a distance from the host computer. This can improve physical arrangement in a test rack, reduce noise near the operator, and allow the host computer to be upgraded independently. The controller is designed for reliable operation in laboratory and industrial test systems.

Multi Chassis and System Expansion

The PXIe-8388 can be used in multi chassis configurations where additional PXI Express chassis are added to a test system. This supports expansion of channel count and instrument count without replacing the main computer. Multi chassis systems are common in large automated test installations and research platforms.

The controller works with compatible PXI Express chassis and host systems. Engineers should verify cable length, chassis compatibility, and software support for the planned configuration. The MXI-Express architecture provides a consistent programming model for PXI Express modules across the link.

Software and Integration

The PXIe-8388 is supported by NI PXI Platform Services and standard NI instrument drivers. Once the chassis and modules are detected, PXI Express instruments can be configured and programmed in the same way as an embedded controller system. LabVIEW, LabWindows/CVI, Measurement Studio, and other NI development environments can be used for application development.

The controller supports the timing and synchronization resources available in the PXI Express chassis. Trigger lines and clocks remain available to installed modules, allowing coordinated operation between instruments. The host connection handles data transfer and control while the chassis manages module timing.

Typical Applications

• Remote control of PXI Express chassis

• Multi chassis test system expansion

• High bandwidth data acquisition systems

• Automated test with desktop or rack computer control

• Laboratory research platforms

• Systems requiring separation of host and measurement hardware

The PXIe-8388 provides an MXI-Express x16 link for PXI Express remote control. Its high bandwidth, multi chassis support, and NI software integration make it suitable for expandable test and measurement systems.