The NI PXI-1044 is a 14-slot 3U PXI chassis that integrates PXI and CompactPCI modules for high-bandwidth test and measurement systems. It delivers independent bus architecture with three PXI segments linked by dual 64-bit/33 MHz PCI-to-PCI bridges, enabling parallel instrument operation with minimal latency. The field-removable power supply shuttle supports mean time to repair under five minutes, while advanced triggering and synchronization features ensure precise multi-instrument coordination in automated test environments.
Technical Specifications
• Chassis Architecture: 14-slot 3U form factor; PXI Hardware Specification Revision 2.1 compliant
• Module Support: 3U PXI and 3U CompactPCI modules
• Bus Configuration: Three independent PXI bus segments; two 64-bit/33 MHz PCI-to-PCI bridges
• System Reference Clock: Low-jitter (<5 ps) 10 MHz with external input/output (BNC connectors); automatic external reference detection
• PXI Clock Distribution: Autonomous 10 MHz framework clock (PXI_CLK10) to all peripheral slots; independent buffer with slew rate <250 ps between slots; external source capability via P2 connector Star trigger slot
• Trigger Architecture: Eight PXI trigger lines per bus segment; software-programmable routing between segments; dedicated matched trace-length Star trigger line (slot 2 to peripheral slots 3–14); trigger line reservation and double-drive prevention; programmatic trigger routing configuration
– Electrical & Power
• Total Power Supply: 500 W
• Module Power Budget: 467 W available
• Power Rails: +3.3 V @ 32 A, +5 V @ 47 A, +12 V @ 7.0 A, –12 V @ 3.5 A
• Input Specification: 100–240 VAC, universal automatic voltage/frequency ranging
• Protection: Push-reset circuit breaker; front-panel power-failure LED
• Remote Control: Voltage monitoring and power-inhibit control
– Environmental
• Cooling Capacity: 25 W per slot; temperature-controlled fan with AUTO (acoustic optimization) and HIGH (maximum cooling) modes
– Compatibility & Integration
The PXI-1044 supports mixed-signal and RF test architectures through independent bus segments, enabling parallel instrument execution without contention. Field-replaceable power delivery and modular trigger distribution simplify maintenance and configuration scaling across multi-instrument setups.
