CFP-AI-111 National Instruments

CFP-AI-111 National Instruments Central unit

Product  Description：

National Instruments (NI) Central Units, primarily represented by CompactRIO (cRIO) controllers, PXI Express system controllers, and CompactDAQ (cDAQ) chassis controllers, function as the high-performance processing core for advanced measurement, automated test, and control systems. These central units combine an industrial processor—often running a deterministic Real-Time Operating System (RTOS)—with user-programmable FPGA (Field Programmable Gate Array) technology. This dual-architecture design allows them to execute complex software applications while simultaneously handling nanosecond-level timing, triggering, and ultra-high-speed parallel processing.

Product Parameters

The technical capabilities of an NI Central Unit are defined by its high-throughput architecture and processing power:

• Processor Architecture: Features high-performance Intel Core, Intel Atom, or ARM-based processors optimized for low-latency computation and data logging.

• Operating System Support: Runs NI Linux Real-Time for deterministic application execution or standard Windows IoT Enterprise for complex user interfaces and third-party software integration.

• FPGA Integration: Equipped with onboard Xilinx Kintex-7, Artix-7, or Zynq UltraScale+ FPGAs to manage custom timing, inline data processing, and digital filtering.

• System Bandwidth: PXI Express central controllers deliver high data throughput, with module slot bandwidths ranging from 2 GB/s up to 24 GB/s per system.

• Memory Configuration: Offers substantial memory depth, typically featuring up to 64 GB of DDR4 RAM and high-speed NVMe solid-state storage for continuous data stream logging.

• Connectivity Interfaces: Standard ports include dual Gigabit Ethernet, USB 3.0, DisplayPort or VGA for video output, and specialized timing/triggering lines for multi-chassis synchronization.

Product Advantages

NI Central Units are preferred in advanced engineering environments due to their unique combination of speed, openness, and timing synchronization:

• Hardware-Timed Synchronization: Utilizes built-in timing buses (such as PXI trigger lines or sub-microsecond Ethernet timing via IEEE 1588) to perfectly synchronize measurements across hundreds of channels.

• Reconfigurable I/O (RIO) Architecture: The onboard FPGA gives engineers the ability to customize hardware behavior, allowing for real-time control loops that execute at rates exceeding 100 kHz.

• Software-Defined Flexibility: Fully compatible with NI LabVIEW, MATLAB, C++, and Python, allowing developers to reuse existing algorithms and scale software across different hardware platforms.

• Industrial Ruggedness: CompactRIO and CompactDAQ central units are designed for extreme environments, supporting high operating temperatures (typically -40°C to 70°C), 50 g shock resistance, and 5 g vibration resistance.

• High Component Density: Eliminates the need for separate signal conditioning, processing, and control units by consolidating these capabilities into a single unified platform.

Product Applications

These central units serve as the computing backbone for highly complex test, measurement, and control applications:

• Aerospace and Defense Testing: Managing structural lifecycle tests, hardware-in-the-loop (HIL) simulation for flight controllers, and rocket telemetry acquisition.

• Automotive Research: Controlling HIL test rigs for Electric Vehicle (EV) powertrain evaluation, battery management system (BMS) validation, and autonomous driving data logging.

• Grid Automation and Power Quality: Monitoring high-voltage electrical substations, executing real-time phasor measurement calculations, and protecting smart grid infrastructure.

• Advanced Machine Control: Governing high-speed packaging lines, semiconductor wafer processing machinery, and complex medical robotics requiring microsecond-level synchronization.

• Big Physics and Research: Synchronizing data acquisition across massive sensor arrays in particle accelerators, fusion research reactors, and large-scale astronomical observatories.

Important Precautions

To maintain deterministic performance and prevent physical or software damage to the central unit, follow these operating guidelines:

• Thermal Management: High-performance controllers generate significant heat. For PXI systems, ensure the chassis fan speed filters are clean and unobstructed. For CompactRIO systems, mount the unit in the specified orientation to maximize natural convection or conductive cooling through the chassis base.

• Proper Shutdown Procedures: Because NI Real-Time units utilize file systems for data logging, abruptly disconnecting the power supply during a write cycle can cause flash memory corruption. Always utilize the software shutdown APIs or hardware safe-state routines before removing power.

• Static Electricity Controls: The high-speed backplane pins and expansion module interfaces are highly sensitive to Electrostatic Discharge (ESD). Always handle the central unit in an ESD-safe environment and use a grounded wrist strap during installation.

• FPGA Compilation Resource Limits: When designing custom FPGA code, monitor the gate utilization and thermal dissipation parameters within the compilation software. Over-allocating FPGA resources can cause timing failures or excessive heat generation on the chip.

• Grounding and Shielding: Maintain a single, low-impedance connection between the central unit’s chassis ground lug and the primary enclosure earth. Poor grounding practices can introduce ground loops, compromising measurement accuracy and communication stability.

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Our services：

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

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Service: Professional Sales provides 24 hours /7 days online service

Warranty: one year

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