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National Instruments PXIe-7858R PXI R Series Reconfigurable I/O Module

The PXIe-7858R (Part number: 784147-01) is an R Series Reconfigurable I/O Module developed by National Instruments. This module provides 8 analog inputs, each with a data sampling rate of 1 MS/s and 16-bit resolution. Each input has AI+ and AI- pins for differential voltage signals. For single-ended measurements, either AIGND (Referenced Single-Ended mode, RSE) or AISENSE (Non-Referenced Single-Ended mode, NRSE) can be used.

The NI PXIe-7858R additionally has 8 analog outputs, also with a 1 MS/s sampling rate and 16-bit resolution. Each output consists of an AOGND pin and an AO pin, enabling users to generate signals for external devices. This module offers 48 digital I/O channels with software-configurable voltage levels ranging from 1.2 V to 3.3 V. These channels can be configured as either input or output. All digital I/O channels support frequencies up to 80 MHz. The digital I/O lines connect directly to the FPGA via buffers, allowing for high-speed control and flexible logic implementation. However, external protection is required when interfacing with high voltages, as the module does not have built-in overcurrent or overvoltage protection for digital I/O.

The module is equipped with a Xilinx Kintex-7 325T FPGA, allowing users to implement custom logic for real-time processing. It has 16,020 kbits of embedded block RAM and 512 MB of onboard DRAM. The PXIe-7858R also features two 68-pin VHDCI I/O connectors for flexible interfacing. The device operates using the NI-RIO driver software, which is compatible with software packages such as LabVIEW, the LabVIEW Real-Time Module, and the LabVIEW FPGA Module. The FPGA provides precise control over I/O timing, enabling advanced applications such as custom protocol communication, sensor simulation, and high-speed control. The module also supports multi-rate sampling and per-channel triggering.

The NI PXIe-7858R is designed for PXI Express (PXIe) Peripheral Slots, ensuring high-bandwidth data transfer within a PXIe chassis. It 0.36 lbs. and has physical dimensions of 7.3 × 6.8 × 1.4 inches.