The NI PXI-8420/8 is an 8-port RS232 serial interface card for PXI chassis systems. It expands serial communication capacity by integrating multiple RS232 devices into a single modular slot, supporting legacy serial applications and modern test automation environments without redesign. The card delivers up to 115.2 kbps per port with 64-byte transmit and receive FIFOs, plug-and-play configuration, and standard DB-9 connectivity via included adapter cable.
Technical Specifications
• Interface: RS232 serial, 8 independent ports
• Baud Rate: Up to 115.2 kbps per port
• I/O Connector: 68-pin SCSI type connector with eight DB-9 male outputs
• FIFO Buffer: 64 bytes transmit and receive per port
• ESD Protection: ±15 kV on data lines (HBM)
• Isolation: Not optically isolated
• Power Requirements: +5 VDC (150 mA typical / 250 mA max); ±12 VDC (80 mA typical / 800 mA max)
• Dimensions: 3.9 × 6.3 in. (100 × 160 mm)
– Key Features
• Plug-and-play installation with automatic configuration
• Enhanced serial driver with reliable interrupt sharing
• Software-configurable multiport capacity per application requirements
• Standard PC COM port compatibility with existing serial applications
• High-performance data transfer through dual FIFOs
– Typical Applications
• Industrial automation and process control integration
• Test and measurement systems requiring multiple serial instruments
• Laboratory equipment communication and data acquisition
• Legacy system modernization within PXI platforms
– Compatibility & Integration
• NI-VISA driver support with Visual Basic, Visual C++, LabVIEW, LabWindows/CVI, and Measurement Studio
• Windows 2000/NT/XP/Me/9x operating systems
• PXI slot-based installation in standard chassis
• Adapter cable included; optional 68-pin SCSI to 8 DB-9 cables available
