The NI PCIe-8431/8 is a high-performance, 8-port asynchronous serial interface for high-speed communication with RS485 and RS422 devices at rates of up to 3 Mbit/s. NI high-performance RS485 and RS422 interfaces are available with up to 16 ports. The NI PCIe-8431/8 offers flexible baud rates for data transmissions between 2 baud and 3,000,000 baud with better than 0.015 percent accuracy for standard baud rates, 0.5 percent for nonstandard baud rates, and 1.3 percent above 1 Mbit/s.
NI 843x serial interfaces feature high-performance DMA transfers, multithreading, and multiprocessor support. Unlike traditional interrupt-based serial interfaces, you can use multiple NI serial interfaces to communicate with dozens of ports at high rates effortlessly in a single system with minimal CPU usage. The included NI-VISA API simplifies serial programming in NI LabVIEW and other languages and keeps your code portable between all VISA-compatible interfaces. NI serial interfaces also show up as standard COM ports for compatibility with programs that use serial communications.
You need software to interface with your hardware and to collect, analyze, present, and store your measurements. This board is compatible with a variety of programming languages, including LabVIEW, C/C++, Visual Basic, and .NET. LabVIEW provides the easiest integration with all of your NI hardware and is recommended to maximize your hardware investment.
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