The National Instruments VXI-MXI REV G is a VXIbus extender module that establishes high-speed communication between a VXI chassis and external computers via MXIbus technology. It operates transparently to the host, allowing remote instruments and systems to function as direct backplane connections. The module conforms to the VXIbus Mainframe Extender Specification (VXI-6) and supports dynamic software configuration across multiple interconnected chassis and instruments.
Technical Specifications
• Interface: MXIbus (MXI extensions for Instrumentation)
• Bus Compatibility: VXIbus, MXIbus
• Form Factor: C-size VXIbus module, Slot 0 capable
• Slot Configuration: Automatic Slot 0 detection on some revisions; placement in any slot without jumper configuration
• Data Transfer: High-speed block mode transfers with integrated block mode for enhanced performance
• Address Mapping: Full address translation between MXIbus and VXIbus cycles
• Power (VXI-MXI-2 variant): 2.5 A typical, 3.5 A maximum from +5 VDC source
– Key Features
• Extends VXI connectivity to external PCI-based computers, other VXI mainframes, and instruments equipped with external MXIbus interfaces
• Multiple VXI mainframes operate as single unified system
• Daisy-chain configuration support with PXI and PXI Express chassis
• MXIbus connector on front panel for direct accessibility
• Optional SMB connectors for trigger output, trigger input, and external clock I/O on select variants
• Copper and fiber-optic cable options available; fiber-optic supports distances to 200 m
• MXI-Express x1 copper cables in 1 m, 3 m, and 7 m lengths
– Compatibility & Integration
Fully compatible with NI-VXI and NI-VISA drivers. Supports LabVIEW, LabWindows/CVI, and Measurement Studio programming environments. VXIplug&play compliant. Software-configurable for dynamic device adaptation.
