National Instruments 784471-01

The National Instruments 784471-01 is a cutting-edge 32-channel flexible resolution PXI Analog Input Module, also known as the PXIe-4309, specifically engineered for high-fidelity data acquisition and measurement applications. This module employs eight simultaneous sampling SAR ADCs to deliver exceptional accuracy across multiple channels, supporting sampling rates of up to 2 MS/s for individual channel use and 10 kS/s per channel across all 32 channels in high-accuracy mode. The resolution is adjustable, ranging from 18 bits at maximum sample rates to an impressive 28 bits at lower rates.

Further enhancing its capabilities, the 784471-01 features on-board signal averaging, filtering, and auto-zero measurement switching, alongside a chopping mode that significantly improves noise rejection—especially critical for low-level signal measurements with precision down to nano-volts. It accommodates a versatile input voltage range of ±0.1 V, ±1.0 V, ±10 V, and ±15 V, and offers 0.5% overrange protection, including ±30 V overvoltage protection to secure against unexpected input conditions.

The module ensures maintainable absolute accuracy through various auto-zero modes including none, once, and per sample, catering to different compensation needs for offset errors and guaranteeing stability in performance over time, even under variable thermal environments. Designed for seamless integration into PXI Express systems, the compact module includes a 96-pin I/O connector for flexible connectivity and a FIFO buffer capable of holding 1,023 samples to efficiently manage high-speed acquisition data flows.

Utilizing a unified timing engine, the 784471-01 supports multiple trigger sources and digital timing signals, enabling meticulous control in complex testing scenarios. This device operates efficiently within a temperature range of 0 °C to 55 °C and is engineered to withstand demanding industrial conditions, including shock and vibration, ensuring reliable operation in various environments.