The National Instruments PXI-8331 (MXI-4) is a high-performance interface module that enables remote control and high-speed data transfer between a PXI chassis and a host computer. Using MXI-4 technology as a PCI-to-PCI bridge, it creates a software-transparent link allowing PXI modules to be recognized and controlled as native PCI devices in the host system. This architecture facilitates multichassis expansion and leverages powerful desktop computers or servers to manage complex PXI configurations without requiring additional host power supply.
Technical Specifications
Data Transfer and Connectivity
• Serial data rate: 1.5 Gbit/s per link
• Peak data transfer rate: 132 Mbytes/s
• Sustained data transfer rate: 78 Mbytes/s
• Interface technology: MXI-4 (Multi-System Extension)
• Data link: Copper or fiber-optic cables (sold separately)
• Maximum copper cable distance: 10 m
• Maximum fiber-optic distance: 200 m
• PCI compatibility: 3.3 V and 5 V signaling, PCI Specification Revision 2.2 or later
• PXI chassis compatibility: PXI Hardware Specification Revision 1.0 or later; CompactPCI 2.0 R2.1
• Error checking and retransmission supported
Physical Dimensions
• Size: 3.9 × 6.3 inches
• Weight: 0.55 lb
• Connectors: Industrially rugged design
Environmental Specifications
• Operating temperature: 0 to 55 °C
• Storage temperature: –20 to 70 °C
• Relative humidity: 5 to 95% noncondensing
• Shock: 30 g peak, half-sine, 11 ms pulse
• Random vibration (operating): 5 to 500 Hz, 0.3 grms
• Random vibration (nonoperating): 5 to 500 Hz, 2.4 grms
– Key Features
• Daisy-chain or star multichassis configuration support
• Supports up to 255 bus segments via PCI-PCI bridging
• PXI modules appear as direct PCI installation to host
• Cross-platform software driver support
– Compatibility & Integration
• Operating systems: Windows, Linux, macOS X, Solaris
• Windows 10 64-bit requires PXI Platform Services 15.0 or higher
• DAQmx and vendor software packages provide necessary drivers
