PXI-8430 National Instruments

PXI-8430 National Instruments Programmable controller

Product  Description：

The PXI-8430 serves as a bridge between the PXI backplane and external RS-232 devices. Unlike standard serial ports, it features an advanced Direct Memory Access (DMA) engine that allows the module to transfer data directly to the system memory without involving the host CPU for every byte. This architecture significantly enhances system responsiveness and allows the module to maintain high throughput even during heavy computational tasks. The module is fully compatible with Windows and LabVIEW Real-Time operating systems and appears as a standard COM port in the operating system, making it compatible with existing serial communication software.

Product Parameters

• Serial Standard: RS-232

• Port Availability: 2, 4, 8, or 16 ports depending on the specific model

• Maximum Baud Rate: Up to $1 \text{ Mbps}$ (1,000 kbaud)

• Baud Rate Accuracy: $0.01\%$ for standard baud rates and $1\%$ for non-standard baud rates

• Baud Rate Range: Supports any baud rate from $2 \text{ baud}$ to $1 \text{ Mbps}$

• FIFO Buffer Size: $128 \text{ bytes}$ for both transmit and receive per port

• Bus Type: PXI (compatible with PXI Hybrid slots)

• Power Requirements: Typically $+5 \text{ VDC}$ (current varies by port count, e.g., $400 \text{ mA}$ typical for 4-port, up to $1.4 \text{ A}$ for 16-port)

• I/O Connectors: 10-position modular jack (4-port) or 68-pin VHDCI/SCSI-68 (8 and 16-port) with breakout cables to DB-9

• Operating Temperature: $0 \text{ °C}$ to $55 \text{ °C}$

• Dimensions: Standard 3U PXI module ($10 \text{ cm} \times 16 \text{ cm}$)

Product Advantages

• High Efficiency: The DMA engine reduces CPU utilization, ensuring that the serial communication does not bottleneck the overall performance of the PXI system.

• Flexible Baud Rates: The hardware supports a virtually unlimited range of baud rates, allowing for communication with unique or custom industrial equipment that does not use standard baud rates.

• Multi-Port Density: High port density options (up to 16 ports in a single slot) allow users to maximize the use of chassis space.

• Ease of Use: It utilizes the NI-Serial driver, which is highly reliable and provides a consistent API across different NI serial hardware. It also integrates seamlessly with LabVIEW and NI-VISA.

• Multithreading and Multiprocessor Support: The driver and hardware are optimized for modern computing architectures, providing superior stability in complex automation environments.

Important Considerations and Precautions

• Driver Installation: You must install the NI-Serial driver software before physically installing the module into the PXI chassis to ensure proper hardware detection.

• Power Budgeting: Before adding high-port-count modules like the PXI-8430/16, verify that the PXI chassis power supply can handle the additional current load.

• Cable Management: Use only high-quality shielded cables, especially when operating at high baud rates or over long distances (RS-232 is typically limited to $15 \text{ meters}$).

• Cooling: Ensure the PXI chassis has adequate airflow. All unused slots should be covered with filler panels to maintain the internal cooling pressure required for the module.

• Static Discharge: Handle the module only by its edges or the front panel. Avoid touching the connector pins to prevent damage from Electrostatic Discharge (ESD).

• Pollution Degree: The device is rated for Pollution Degree 2; ensure it is operated in an environment free of conductive contaminants or excessive moisture.

Product Applications

The PXI-8430 is widely used in high-reliability and high-speed automated test and measurement scenarios.

• Automated Test Equipment (ATE): Controlling multiple serial-interfaced instruments such as power supplies, signal generators, or digital multimeters from a central PXI system.

• Industrial Automation: Interfacing with Programmable Logic Controllers (PLCs), barcode scanners, and HMI panels in a manufacturing environment.

• Data Acquisition: High-speed logging of data from specialized sensors that output RS-232 serial streams.

• Aerospace and Defense: Testing avionics components and communication subsystems that rely on robust serial protocols.

• Real-Time Simulation: Used in Hardware-in-the-Loop (HIL) testing where deterministic serial communication is required under LabVIEW Real-Time.

The structure and details of the product：

Our services：

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

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

Warranty: one year

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