Virtex-II 1M gate FPGA, PXI Multifunction Reconfigurable I/O Module—The PXI-7831 features a user-programmable FPGA for high-performance onboard processing and direct control over I/O signals for complete flexibility of system timing and synchronization.

The NI 7831R User Manual describes the electrical and mechanical aspects of the NI 7831R device and contains information about device operation and programming.

The National Instruments PXI-7831R Multifunction Intelligent DAQ Module features user-defined, onboard processing for complete flexibility of system timing and triggering.

The Default 7831R (FPGA) VI provides a timed loop synchronizing all of the I/O available on the PXI-7831R (8 AI, 8 AO, and 96 DIO). The Default 7831R (FPGA) VI offers a variety of different timing modes that allow it to run off of its own internal loop timer, or to synchronize its operation with other devices in the system.

The NI 7831R User Manual describes the electrical and mechanical aspects of the NI 7831R device and contains information about device operation and programming.

R Series Reconfigurable I/O Module (AI, AO, DIO) 8 AI channels, 8 AO channels, 96 DIO lines, 1 million gate FPGA, 200 kS/s AI Sample Rate. You can use an FPGA I/O Node, configured for reading and writing, with this device. Note FPGA I/O Nodes cannot be configured to write to R Series digital output channels as both ports and lines.

View and Download National Instruments NI 7831R user manual online. Reconfigurable I/O Devices for PCI/PXI/CompactPCI Bus Computers. NI 7831R i/o systems pdf manual download.

PXI/PCI-7831R 的数字输出缺省的设置是只能输出3.3V。 根据用户手册，为了能输出5V的数字TTL高电平，我需要添加一个外部的上拉电阻。 这时候，输出阻抗是多少？ 这个电阻值应该是多少？