National Instruments PXIe-7866 Multifunction Reconfigurable I/O Module

The National Instruments PXIe-7866 is a versatile Multifunction Reconfigurable I/O Module designed for engineers and developers who need flexibility and control over their testing and simulation applications. With a reprogrammable FPGA, this device can be used for I/O signal management, onboard processing and direct control. It is an excellent choice for hardware-in-the-loop tests, custom protocol handling, sensor simulation and high speed controlling applications.

The PXIe-7866 module offers 24 analog output channels, 2 input channels and 32 5V digital I/O channels connected to a Kintex-7 325T FPGA. It is highly scalable and provides a great deal of flexibility. This helps improve productivity and streamline operations. The dedicated A/D converter (ADC) provides independent timing, individual channel triggering, and multirate sampling, making it easy to capture and analyze data. With peer-to-peer streaming, you can quickly transfer data to other PXI Express modules without any hassles.

The PXIe-7866 is equipped with analog input channels, each having an AI+ pin, AI- pin and AIGND pin. Single-ended or differential voltage signals can be connected to any of these pins for data transmission. With the AISENSE pin, you can easily connect single-ended signals that are not already referenced. For connecting referenced single-ended voltage signals, ensure that the common-mode voltage is staying within the prescribed range by connecting the voltage ground signal to AIGND.

The PXIe-7866 is equipped with DIO lines that are compatible with 5V TTL, 3.3V LVTTL, and 3.3V LVCMOS- allowing it to receive signals from a variety of sources. When configured as outputs, they can send signals to these same devices. The digital outputs from the system can produce a voltage range between 0V to 3.3V. This is enough to meet the 5V TTL threshold for signaling high, making it viable for digital logic input although it is not at a 5V level. To minimize noise pickup and maximize measurement accuracy, differential AI connections can be used to reject common-mode noise, and cabling should be kept away from noise sources such as video monitors and analog signals. Overall, the NI PXIe-7866 offers a wide range of features and capabilities to help you design and implement high-performance test systems with ease and precision.