National Instruments PCIe-6321 Multifunction I/O Device

The PCIe-6321 (Part Number: 781044-01) is a 16 AI, 2 AO, 24 DIO PCI Express based Multifunction I/O Device from the X Series by National Instruments. This model offers analog and digital I/O, as well as four 32-bit timers for PWM, frequency, encoder, event counting, etc. With the help of the high-throughput PCI Express bus, the PCIe-6321 X Series DAQ delivers high-performance functionality and a multicore-optimized application software and driver. The integrated NI-STC3 synchronization and timing technology makes this device capable of providing advance level timing functionality, including re-triggerable measurement tasks and digital and analog timing engines.

This Multifunction I/O Device is well suited for a variety of applications, including but not limited to, basic data logging, test automation, and control automation. With the NI-DAQmx configuration utility and driver, the user can configure their NI PCIe-6321 quickly. On a single analog channel or multiple channels, the PCIe-6321 NI can acquire samples at a rate of 250 kS/s. The four general purpose counters can be utilized for various counter and position measurements, such as two-pulse encoding, edge counting, pulse width, period, semi-period, two-edge separation, and more.  These counters operate with 0 to 25 MHz external base clock frequency at 50 ppm base clock accuracy. The device has an operational temperature range of 0 °C to 50 °C. 

The device has an analog input with 16 single ended/8 differential channels, and an analog input with 2 channels. The PCIe-6321 has a digital I/O with 24 channels in total, and has 8 DMA channels which can be used for analog input, analog output, digital input, digital output, counter/timer 0, counter/timer 1, counter/timer 2, counter/timer 3.

The National Instruments PCIe-6321 X Series Device supports external digital triggers through any PFI and RTSI source. This model comes equipped with several digital waveform generations and waveform acquisition functions, such as a start/pause trigger, sample clock, reference trigger, and a sample clock timebase. This device can be self-calibrated. National Instruments suggests calibrating the NI PCIe-6321 device when the ambient temperature is altered and after installation. This will help modify the self-calibration constants to make up for any errors as a result of temporary variations in the atmosphere.

Associated Part Numbers: 194986-04L, 194986C-04L, 194986D-04L, 194986E-04L, 781044-01, 787933-01