The National Instruments VXI-PC-486 is an embedded PC controller serving as the VXIbus Slot #0 System Controller within VXI chassis systems. Based on Intel 486 architecture, it manages critical system operations including clock driving, bus arbitration, timing, and system reset functions. The platform supports data acquisition and industrial control applications through ISA-based design, delivering processor speeds from 20 MHz to 100 MHz depending on configuration. Single-slot and dual-slot models accommodate various storage and I/O expansion requirements.
Technical Specifications
• Processor: Intel 486 at 20 MHz, 40 MHz, 66 MHz, or 100 MHz
• RAM: Onboard configuration varies by model
• CMOS RAM: Battery-backed for BIOS and system parameter retention
• Storage: Hard disk drives from 85 MB to 4.31 GB; 3.5″ floppy drive standard on select models
• Video: Standard VGA (640 × 480 pixels); optional super VGA (1024 × 768 pixels) with subminiature DHD22 connector
• Module Type: C-Size VXI module
• Slot Configuration: Single-slot models (e.g., Model 200) or dual-slot models (e.g., Model 240/2)
• BIOS: Enhanced version with self-diagnostic boot tests; FAILURE LED indicates test status
– Key Features
• VXIbus Slot #0 System Controller functionality
• Multiple Slot 0 settings (A, B, C, D) for multi-mainframe systems
• Integrated GPIB (IEEE 488) interface with NI-488.2 software compatibility
• Serial communication via COM 1/2 ports
• Parallel printer support (LPT)
• External CLK10 TTL I/O via SMB connector
• External trigger input capability
• Turbo frequency indicator on select models
– Compatibility & Integration
Operating system support includes Microsoft DOS, Windows, and LynxOS on applicable models. The controller integrates directly into VXI chassis architecture, managing system-level operations while maintaining compatibility with externally connected GPIB instrumentation through standardized software interfaces.
