Channel & Physical Interface Configuration

• Hardware variants: PXI-8461/1 (1×9-pin D-Sub), PXI-8461/2 (2×9-pin D-Sub), PXI-8461/D (DeviceNet dedicated pin definition)
• Front panel indicators: Per-port CAN activity LED, bus error LED, PXI power indicator
• Rear connector: Isolated 9-pin male shielded D-Sub, pinout compatible with CANoe standard cabling
• Slot occupation: Single-width 3U PXI peripheral slot, no auxiliary chassis slots occupied
• Onboard auxiliary I/O: 2 mode-configurable digital outputs, 1 bus status digital input for external interlock

Multi-Protocol Bus Electrical Parameters

• High-Speed CAN (TJA1041 transceiver): Baud rate 40 kbps ~ 1 Mbps; CAN_H/CAN_L withstand -27 V ~ +40 VDC transient voltage
• Fault-Tolerant Low-Speed CAN (TJA1054A transceiver): Baud rate 5 kbps ~ 125 kbps; supports single-line bus fault automatic switching
• Single-Wire CAN (AU5790 transceiver): Normal mode 33.3 kbps, high-speed burst mode 83.3 kbps; bus withstand -10 V ~ +18 VDC
• LIN Bus: Compliant with LIN 2.1A standard, max baud rate 20 kbps, master/slave software role switching
• DeviceNet variant: Fixed 500 kbps baud rate, conforms to ODVA DeviceNet physical layer specification

Galvanic Isolation & Surge Protection

• Isolation withstand voltage: 500 VDC dielectric withstand for 2 seconds between port and PXI backplane
• Port-to-port isolation: 500 VDC independent isolation for dual-port models to avoid cross-bus interference
• ESD protection: ±15 kV human body model on all bus pins per IEC 61000-4-2 automotive standard
• Common-mode rejection: >90 dB @ 50/60 Hz for industrial power frequency noise
• Bus fault protection: Automatic bus-off recovery, dominant stuck error detection and reporting

PXI Trigger & Backplane Power Specifications

• PXI trigger resources: 7 bidirectional TTL trigger lines, PXI star trigger input, 10 MHz PXI_Clk10 synchronous clock
• Power consumption: 800 mA typical (+5 V rail) for single-port version; 850 mA typical (+5 V rail) for dual-port version
• External auxiliary power: Supports 8~27 VDC external battery power for single-wire CAN wake-up scenarios
• Bus synchronization skew: <200 ns when synchronized with PXI DAQ/DMM modules via star trigger

Auxiliary Digital I/O Parameters

• Digital input (STATUS pin): Logic low ≤0.8 V, logic high ≥2.0 V, 5 V maximum input tolerance
• Digital outputs (MODE0/1): 32 mA sink/source current, low-level output ≤0.55 V @ rated load
• Function mapping: Customizable for bus sleep trigger, terminal resistor switching, external fault alarm

Mechanical & Environmental Specifications

• Dimension: 160 × 100 mm standard 3U PXI module footprint
• Weight: 182 g bare module weight
• Operating temperature: 0℃ ~ +55℃; Storage temperature: -20℃ ~ +70℃
• Humidity: 10%–90% non-condensing operation, 5%–95% non-condensing storage
• Shock & vibration: 30 g half-sine operational shock; 0.3 grms operational random vibration
• EMC compliance: CE, FCC Class A, automotive CISPR 25 electromagnetic certification

Compatibility Matching List

• Compatible chassis: PXI-1031, PXI-1042, PXI-1045 all legacy 3U PXI chassis
• Compatible controllers: PXI-8186 and all NI embedded/external PXI system controllers
• Matching accessories: DB9 shielded CAN cable, external 120Ω terminal resistor, CB-9 breakout terminal block
• Official status: Fully obsolete, only aftermarket inventory and third-party repair available

Software Compatibility

• Drivers: NI-CAN, NI-XNET legacy drivers, compatible with NI-DAQmx parallel operation
• Configuration tools: NI MAX, NI-CAN Monitor, XNET Bus Monitor
• Supported software: LabVIEW all legacy versions, LabWindows/CVI, Python PyXNET, C#
• Supported OS: Windows XP/7/10, Phar Lap ETS real-time OS, limited Linux legacy driver support

Pros & Limitations

• Pros: Multi-protocol one-card integration, automotive-grade transceivers, 500 V high isolation, native PXI trigger synchronization, built-in bus fault diagnosis, dual-port independent isolation, compliance with automotive EMC standards
• Limitations: No onboard terminal resistor requiring external accessories, incompatible with latest XNET unified driver, no CAN FD support, limited operating temperature range