National Instruments R Series

The National Instruments R Series consists of Multifunction Reconfigurable I/O (RIO) Devices and Digital RIO Devices which have the capability to control I/O signals and deliver an FPGA that can be programmed by the user for onboard signal processing and versatile system synchronization and timing. With the NI RIO technology, users can define customized measurement hardware circuitry by utilizing reconfigurable FPGA chips and National Instruments LabVIEW tools. The R Series National Instruments Multifunction RIO Devices are available in form factors such as PXI/CompactPCI, PCI, PCI Express, and USB. All of these devices can be used with the NI-RIO driver software, but they are not compatible with NI-DAQmx or NI-DAQmx Base.

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National Instruments PXI Chassis Part 2

As mentioned in the National Instruments PXI Chassis Part 1 Blog Post,  NI PXI Chassis have many beneficial features. A feature not yet discussed is the timing and synchronization capabilities of these models. PXI Chassis have a 10 MHz system reference clock, star trigger bus, slot-to-slot local bus, and a PXI trigger bus. Furthermore, PXI Express Chassis also have a 100 MHz differential system clock, differential star triggers, and differential signaling. The system reference clocks can phase-lock-loop or PLL to a higher stability clock source than that which is offered on the backplane of the chassis. The result is that PXI modules with higher sample rates can better align their samples across numerous devices.

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National Instruments PXI Chassis Part 1

The National Instruments PXI Chassis are designed for measurement and automation applications, hold PXI modules, and link the modules with a high-performance backplane that provides synchronization and timing features. PXI Chassis deliver cooling, power, and a communication bus for I/O modules or modular devices. These modules can be controlled from an external PC or an embedded controller, with any of National Instruments software tools. These Chassis are compatible with PXI hybrid, PXI Express, and PXI modules.

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