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NI unveils PC-based multifunction DAQ devices for PCI Express

Posted: 23 Aug 2005 ?? ?Print Version ?Bookmark and Share

Keywords:national instruments? ni? data acquisition? daq? pci express?

PCIe-6251 DAQ device

National Instruments (NI) recently released what it touts as the industry's first PC-based multifunction data acquisition (DAQ) devices for PCI Express. The new PCIe-6251 and PCIe-6259 DAQ products combine the high-performance PCI Express bus with the technology advancements of NI's M series DAQ to offer engineers and scientists fast analog and digital I/O with the dedicated per-slot bandwidth of PCI Express.

As with other NI M series DAQ devices, the NI PCIe-6251 and NI PCIe-6259 feature the NI-STC 2 system controller, the NI-PGIA 2 amplifier and NI-MCal calibration technology for increased performance, accuracy and I/O. These two new devices offer up to 32 analog input channels with 16-bit, 1.25MS/s sampling speed, up to four analog output channels with 16-bit, 2.8MS/s sampling speed, and 32 high-speed digital I/O (DIO) channels with 10MHz sampling speed. The products also include additional static DIO lines and two 32bit counter/timers, as well as the company's measurement services software, including NI-DAQmx driver software and VI Logger Lite data-logging software. In addition, all examples and applications originally written for PCI-based M series devices are fully compatible with their new PCI Express counterparts.

PCI Express
PCI Express is a high-performance, point-to-point serial interconnect with a scalable architecture that provides bandwidth from two to 30 times that of traditional PCI. Both the PCIe-6251 and PCIe-6259 use a x1 ("by one") PCI Express connector that provides 250MBps bandwidth per device. Additionally, these and other PCI Express devices from NI are completely software-compatible with traditional PCI, helping both vendors and users preserve their investments in existing driver and application software.

According to Tim Dehne, NI senior vice president of R&D, PCI Express provides dedicated, high speed bandwidth for measurement devices, while also delivering software compatibility with existing PCI products. "This combination opens up new applications for virtual instrumentation and continues to take advantage of the high performance and low cost of PC technology," Dehne said.

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