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Eight-port serial boards

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article image Dramatic improvements in speed, reliability and performance compared to native desktop serial ports.

NATIONAL Instruments today announced two new eight-port serial boards that achieve data rates up to 2Mb/s and incorporate NI-Mite ASIC technology.

The NI PCI-8430/8 and PCI-8431/8 improve CPU use by 15 times compared to traditional plug-in serial interfaces. They offer dramatic improvements in speed, reliability and performance compared to native desktop serial ports. The new boards expand the NI PCI-843x family of serial boards to offer simultaneous communication on up to eight RS232, RS485 or RS422 serial ports.

The NI-Mite ASIC technology included in the new boards delivers DMA memory mapping, PCI bus mastering and scatter-gather technology for superior CPU use. Users can communicate on all eight ports simultaneously at rates up to 2Mb/s with little or no effect on the CPU. This frees up the processor for virtual instrumentation applications that include data acquisition, analysis and presentation. The PCI-8430/8 and PCI-8431/8 also offer flexible baud rates to achieve between 57b/s and 2Mb/s for non-standard rates, and to within 1% accuracy and 0.01% accuracy for standard rates.

The PCI-8430/8 and PCI-8431/8 serial boards are suitable for engineers and scientists who want to communicate with many instruments or devices simultaneously under test. Companies testing mobile phones during manufacturing can use the new eight-port boards to test more phones at the same time, streamlining the manufacturing process.

The new boards include NI-Serial driver software that works with any NI development environment including LabVIEW, LabWindows/CVI and Measurement Studio for Microsoft Visual Studio .NET. Users can take advantage of the more than 4000 instrument drivers from more than 200 vendors at www.ni.com/idnet to quickly configure and control their instruments and measurement hardware, saving valuable programming time. For more information and frequently asked questions on serial communication, readers may visit http://digital.ni.com/express.nsf/bycode/serial.

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