NI FPGA Hardware

NI FPGA hardware gives engineers direct control over measurement timing, signal processing, and input/output behavior through a field-programmable gate array. Instead of executing every operation through a host processor, an FPGA implements application-specific logic in hardware and can run independent tasks in parallel. This architecture supports deterministic control, custom triggering, protocol communication, and rapid responses to incoming signals. For aerospace, defense, industrial automation, and research applications, it provides flexibility beyond the predefined functions of conventional data acquisition devices.

The NI R Series family combines reconfigurable logic with analog or digital I/O for computer-based and PXI test systems. Representative models include the PXI-7831R, PXI-7854R, and PCIe-7852R. The PCIe-7852R, part number 781103-01, uses a Virtex-5 LX50 FPGA and provides eight analog inputs, eight analog outputs, and 96 bidirectional digital lines. Its dedicated analog-to-digital converter on each input supports independently controlled timing and triggering. Engineers can implement specialized measurement sequences, sensor simulation, and hardware-in-the-loop interfaces.

NI FlexRIO targets customizable instrumentation and demanding signal processing. The PXIe-7975R, part number 782955-01, combines a Kintex-7 410T FPGA with 2 GB of onboard DRAM. Compatible FlexRIO adapter modules provide the analog or digital front end, allowing the FPGA module and adapter to function as a reconfigurable instrument. Supported peer-to-peer streaming can move data between compatible modules without routing it through the host processor.

CompactRIO and Single-Board RIO bring programmable FPGA resources into embedded systems. The eight-slot cRIO-9045, part number 785623-01, combines a real-time processor, a Kintex-7 70T FPGA, and support for compatible C Series modules. The sbRIO-9627 integrates processing, a Zynq-7020 FPGA, and onboard I/O on one circuit board. Its 783817-01 development configuration and 783817-02 OEM configuration address different integration needs.

Programmable FPGA hardware also supports flexible division of work: hardware logic handles time-critical operations while the host or real-time processor manages logging, networking, and user interfaces. On supported CompactRIO controllers, NI-DAQmx or Scan Mode can simplify standard measurements, while FPGA mode enables custom processing and direct control of compatible modules.

Custom FPGA development typically uses LabVIEW with the LabVIEW FPGA Module, the appropriate hardware driver, and compatible compilation tools. Embedded applications may also require LabVIEW Real-Time. Software versions, operating systems, target support, and compilation requirements must be checked together, especially when maintaining older equipment. FPGA clock speed alone does not establish measurement throughput; converter rates, interface bandwidth, buffering, and application logic also matter.

When selecting replacement hardware, compare the complete model and part number, FPGA resources, I/O requirements, connector pinouts, chassis compatibility, and existing software dependencies. Retain project source files and deployment records to simplify validation. Apex Waves helps customers source NI hardware for established test systems, replacement requirements, and continued operation of legacy equipment.