The National Instruments PXI-7831R Multifunction RIO Module is a versatile and robust controller designed for applications requiring precision in analog and digital signal processing. It features eight analog input and eight analog output channels, along with 96 digital I/O lines. This module incorporates three adjustment levels for its analog circuits: a quick stacking adjustment for basic needs, an internal adjustment for enhanced accuracy, and an external alignment for the highest precision. The preferred internal adjustment process is rapid, typically completed in less than two minutes, and can effectively mitigate offset and gain errors due to temperature variations. Utilizing the NI-RIO driver software version 1.1 or later, the PXI-7831R is compatible with LabVIEW and other NI software packages, enabling seamless integration into various application environments. For connectivity, the module supports multiple cabling options, including SH68-C68-S for MIO/DIO connectors and NSC68-5050 for direct interfacing with digital signal conditioning SSR backplanes. With a compact design and weight of 152 g, the module measures 6.3 x 2.9 inches and is backed by a warranty of 2-3 years. Although officially marked as obsolete by National Instruments, the PXI-7831R remains available for purchase and repair through Apex Waves. Comprehensive user and maintenance manuals are available for download to assist users with installation and configuration needs. For pricing information, please contact a sales representative.