NI PXI-8232 Gigabit Ethernet Interface

The NI PXI-8232 is a single-slot PXI module that combines Gigabit Ethernet connectivity with IEEE 488.2 GPIB control in one integrated interface. Built around the Intel 82540EM Gigabit Ethernet controller, it delivers data transfer rates up to 1000 Mb/s while maintaining backward compatibility with 100Base-TX and 10Base-T networks. The module supports automatic MDI/MDI-X negotiation and cable polarity detection, eliminating the need for crossover cables and simplifying network integration.

The onboard GPIB controller enables communication with IEEE 488.1 and 488.2 instruments at speeds up to 7.7 MB/s using HS488 handshaking. A license for NI-488.2 driver software is included. When programmed with NI-Industrial Communications for EtherCAT software in LabVIEW, the Ethernet port functions as an EtherCAT master, expanding application flexibility.

– Technical Specifications

Ethernet Interface
• Controller: Intel 82540EM Gigabit Ethernet Controller
• Standards: 1000Base-T, 100Base-TX, 10Base-T
• Maximum Transfer Rate: Up to 1000 Mb/s
• Practical Performance: ~500 Mb/s transmit, ~800 Mb/s receive (system-dependent)
• Cabling: Standard Category 5 Ethernet (4-pair recommended for Gigabit)
• Auto-MDI Negotiation: Supported; direct adapter-to-adapter connection without crossover cable
• Connector: RJ-45 with integrated LEDs

IEEE 488 (GPIB) Interface
• Standards: IEEE 488.2, IEEE 488.1
• Transfer Rates: HS488 up to 7.7 MB/s; 3-wire handshake up to 1536 kbytes/s; IEEE 488.1 over 1.5 Mbytes/s
• Connector: 24-pin IEEE 488
• Driver: NI-488.2 license included

Electrical
• Power: 917 mA typical, 1500 mA maximum
• Voltage: 5 V peripheral slot required

Physical
• Dimensions: 10.0 cm × 16.0 cm (3U)
• Type: Single-slot PXI peripheral module
• Installation: Requires PXI peripheral bus master slot for optimal DMA and controller performance

Environmental
• Operating Temperature: 0 °C to 55 °C
• Operating Humidity: 10% to 90%

– Key Features

• Dual-interface design integrates Ethernet and GPIB in one module
• EtherCAT master capability when combined with appropriate LabVIEW software
• Automatic cable detection and speed negotiation
• High-speed GPIB performance via HS488 protocol

– Typical Applications

• Integration of legacy GPIB instruments into modern PXI systems
• Network-based instrument control and data acquisition
• EtherCAT master implementations in industrial automation
• Mixed-protocol test systems combining Ethernet and GPIB devices