The NI PXIe-8375 is a fiber-optic MXI-Express x4 interface card that bridges PXI Express chassis and host computers over extended distances with electrical isolation. It operates as a transparent PCI Express link, allowing PXI and PXI Express modules to be recognized as standard PCI devices without software modification. The card supports up to 838 MB/s sustained throughput with 1 GB/s MXI bandwidth over fiber-optic cabling up to 100 m in length.
Technical Specifications
Interfaces and Connectivity
• Host Interface: PCI Express x4
• Chassis Interface: PXI Express (Slot 1)
• Link Type: MXI-Express x4 fiber-optic
• Data Transfer Rate: 838 MB/s sustained throughput; 1 GB/s MXI bandwidth
• Maximum Cable Length: 100 m fiber-optic
Power Requirements
• +3.3 V Rail: 1.25 A typical, 2 A maximum
• +5 V Rail: 1 mA typical, 2.5 mA maximum
• +12 V Rail: 285 mA typical, 450 mA maximum
• +5 VAUX Rail: 100 mA typical, 285 mA maximum
Physical Characteristics
• Dimensions: 10.0 × 16.0 cm
• Weight: 0.17 kg typical
Environmental Conditions
• Operating Temperature: 0 °C to 55 °C
• Storage Temperature: -40 °C to 71 °C
• Operating Humidity: 10% to 90% noncondensing
• Storage Humidity: 5% to 95% noncondensing
• Maximum Altitude: 2,000 m at 25 °C ambient
• Operating Shock: 30 g peak, half-sine, 11 ms pulse
• Operating Vibration: 5 Hz to 500 Hz, 2.4 grms
– Key Features
• Electrical isolation via fiber-optic cabling eliminates ground loops and EMI coupling
• Single x4 PCI Express slot requirement in host; one system slot in chassis
• Transparent link operation—no application code changes needed
• Supports extended deployment scenarios with up to 100 m cable runs
– Typical Applications
• Remote PXI Express system control from standard host computers
• Measurement and automation systems requiring electrical isolation
• Distributed test architectures with distance constraints
• Systems requiring EMI immunity in electrically harsh environments
– Compatibility & Integration
• PXI Express Hardware Specification Revision 1.0 and later
• PICMG CompactPCI Express EXP.0 R1.0 Specification
• PCI Express Specification Revision 1.0a and 1.1
• Compatible with NI rack-mount controllers, Dell, and Hewlett-Packard computers
