NI PCIE-7820R is officially identified by NI as an R Series Digital I/O Module for PCI Express. NI’s Getting Started Guide names the device as the PCIe-7820R and describes it as a PCI Express digital I/O board with 128 DIO and a Kintex-7 160T FPGA. NI’s current commercial page uses the PCIe-7820 family name for the same device family, so catalog wording should preserve the exact PCIe form factor and distinguish it from PXIe variants.
This module is a digital reconfigurable I/O device rather than a multifunction analog I/O board. Official NI sources specify 128 bidirectional digital channels, single-ended signaling, supported logic levels of 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V, 50 Ω digital I/O termination impedance, output voltage range from 0 V to 3.3 V, four external clock inputs, and maximum clock, acquisition, generation, and data rate of 80 MHz.
For FPGA resources, NI specifies a Xilinx Kintex-7 160T FPGA. NI certification data for the PCIe-7820R identifies the assembly as a no-DRAM configuration, which materially distinguishes this exact model from other separate family members. On system power-on, the official guide states that the DIO channels default to input low with pull-down resistors.
