The National Instruments 783531-01, also referred to as the PXIe-4339, is an advanced 8-channel PXI Express strain/bridge input module optimized for high-precision data acquisition in testing environments. This module features 24-bit Delta-Sigma analog-to-digital converters (ADCs) that facilitate simultaneous sampling on all channels, ensuring accurate and reliable measurement results. It supports a variety of input ranges, including ±100 mV, ±200 mV, ±500 mV, and ±10 V, and can operate in both ratiometric and voltage modes.

Equipped with extensive bridge completion options for half-bridge and quarter-bridge configurations, the 783531-01 also incorporates shunt calibration functionality for enhanced measurement accuracy. Its programmable excitation capability provides a constant differential voltage between 0.625 V and 10 V, making it suitable for diverse measurement applications. Designed for demanding conditions, this module delivers high-fidelity signal processing through wide bandwidth analog outputs and advanced digital filtering.

The unit supports efficient data transfer via direct memory access (DMA) and programmed I/O, with a sampling rate ranging from 1 S/s to 25.6 kS/s, and includes a FIFO buffer capable of holding 1,023 samples. The hardware-timed single-point sample mode allows for precise acquisition control. Additional features include Transducer Electronic Data Sheet (TEDS) support for simplified sensor integration, as well as analog and digital triggering options.

Constructed with a 100 MHz internal timebase for superior accuracy, the 783531-01 operates reliably across a temperature range of 0 °C to 55 °C and at altitudes of up to 2000 meters above sea level. It adheres to rigorous safety and electromagnetic compatibility standards, including IEC 61010-1 and EN 61326-2-1, and is designed to withstand substantial shock and vibration, making it ideal for both industrial and laboratory environments. With a compact 3U PXIe form factor and weighing only 186 g (6.6 oz.), the module measures 16 cm × 10 cm (6.3 in. × 3.9 in.), ensuring easy integration into PXI Express systems.