The NI 184971-01 MXI-2 Feedthrough Connector enables high-speed interconnection of multiple chassis and devices using the MXI-2 interface standard. This feedthrough connector extends MXI-2 communication pathways—including VXI triggers, interrupts, and utility signals—across distributed test systems while maintaining signal integrity. It is essential for daisy-chaining configurations where multiple MXI-2 devices require synchronized operation through a single cable connection.
– Technical Specifications
The MXI-2 interface is a 32-bit multimaster system bus delivered over cable. It combines standard MXI signals with VXI triggers, all VXI interrupts, CLK10, and utility bus signals (SYSFAIL*, SYSRESET*, and ACFAIL*). The interface supports high-performance block transfer rates and integrates the Synchronous MXI protocol and VME64 MBLT (8-byte block transfers) directly into ASICs for accelerated data operations.
– Key Features
• Feedthrough connector design for daisy-chaining multiple MXI-2 devices
• Single-cable extension of triggers, interrupts, and utility signals to both remote mainframes and local CPU interfaces
• Compatible with VXI-MXI-2 and VME-MXI-2 interface boards
• Enables CPU interface boards (such as PCI-MXI-2) to operate as direct backplane connections to VXI/VME systems
• Supports both straight-point and right-angle connector configurations with MC connector extenders for space-constrained applications
– Typical Applications
MXI-2 feedthrough connectors are used in distributed test systems requiring multiple chassis synchronization, VXI/VME instrumentation networks, and CPU-controlled test architectures where direct backplane emulation is necessary.
– Compatibility & Integration
This connector works with MXI-2 cable connectors on VXI and VME interface boards. It integrates with system controllers such as PCI-MXI-2 boards that can terminate MXIbus signals directly and may incorporate up to 16 MB of onboard DRAM shared with the MXIbus and VXI/VMEbus infrastructure.
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