The National Instruments PXI-4204 (Part Number: 778745-4204) is an advanced 16-bit analog input module specifically engineered for PXI-based systems. This module features eight differential analog input channels and offers a maximum sample rate of 200 kS/s. With a ±100 V input range, it is particularly well-suited for high-voltage applications, including 42 V automotive measurements. The PXI-4204 incorporates a 2-pole low-pass Butterworth filter with selectable bandwidths of 6 Hz or 10 kHz, ensuring accurate signal processing.

This device is designed with integrated signal conditioning circuitry that allows for attenuation, sample-and-hold (SS/H) functionality, amplification, and filtering. Each channel includes a balanced divide-by-ten attenuator and an instrumentation amplifier, facilitating precise voltage measurements up to ±100 V. Furthermore, the onboard analog multiplexer enables users to programmatically route internal test signals for self-testing and calibration purposes. The track-and-hold circuitry supports synchronized measurements across multiple channels, while the multiplexed architecture can operate through a single analog-to-digital converter (ADC) when SS/H is disabled.

The PXI-4204 is compatible with NI-DAQmx drivers (version 7.0 or later) and can be seamlessly integrated with application development environments such as LabVIEW, LabWindows/CVI, and Measurement Studio. For connectivity, the module features a 1 x SMB connector and a 1 x 16-pin COMBICON connector. With dimensions of 8.39 x 5.12 x 0.79 inches and a weight of 7.3 oz., the PXI-4204 is a compact solution for high-performance data acquisition. Although designated as obsolete by National Instruments, the PXI-4204 remains available for purchase and repair through Apex Waves.