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National Instruments 787282-01 FlexRIO Digital I/O Module

The National Instruments 787282-01 (model name: PXIe-6569) is a versatile FlexRIO Digital I/O Module designed for high performance interfacing and flexible application needs. This module is equipped with a user-programmable FPGA that allows for custom implementations and real time interfacing with a wide array of digital protocols. It features up to 64 low voltage differential signal (LVDS) channels that are either input or output and eight bidirectional single ended channels that make it suitable for complex digital communication setups.

The 787282-01 module’s digital I/O channels are managed through high performance buffers such as the Texas Instruments SN74AVC2T245 for PFI channels and DS25BR440 for LVDS channels. These components ensure reliable signal integrity with input and output impedances of 50 kΩ and 56 Ω respectively for single ended signals and 100 Ω for differential signals. The module supports a range of voltage families from 1.2V to 3.3V catering to various interfacing requirements with a maximum digital data rate of up to 1.25 Gbps for LVDS lines.

This digital I/O module leverages NI-TClk technology for signal synchronization that enables sample level accuracy when aligning clocks across multiple modules within a PXI Express chassis. This feature is critical in applications requiring precise timing coordination between different channels or devices. The module supports skew adjustments with a resolution as fine as 0.7 ps that ensures minimal timing discrepancies in synchronized operations. The reconfigurable FPGA on the 787282-01 is available in two configurations, KU035 and KU060 each providing different levels of logic resources, DSP slices and embedded block RAM.

This FPGA can handle complex signal processing tasks with data transfers facilitated through DMA, interrupts and programmed I/O. The onboard DRAM totaling 4 GB across two banks supports high speed data handling with a theoretical maximum data rate of 17 GB/s. The NI 787282-01 operates within a temperature range of 0 °C to 55 °C and supports a maximum altitude of 2,000 meters. It is also designed to withstand shock and vibration that ensures reliability in rugged operational conditions. The module’s physical dimensions (2.0 cm × 12.9 cm × 20.0 cm) and robust build make it a durable choice for various industrial and research applications.