The National Instruments USB-6351 (Part Number: 781440-01) is a versatile multifunction I/O device designed for a wide range of industrial automation applications. This robust data acquisition tool features integrated analog input/output, digital input/output, and four 32-bit counters/timers, supporting functionalities such as pulse-width modulation (PWM), encoder measurements, frequency monitoring, and event counting. The USB-6351 employs NI-STC3 timing and synchronization technology, enabling independent timing engines which improve synchronization and precision in measurement activities. This capability enhances the device's performance across diverse applications, including factory monitoring, hardware validation, and scientific experimentation.

Users can leverage graphical programming software for efficient data logging, facilitating clear data display, analysis, and disk logging. The USB-6351 is ideal for developing customized control systems by connecting various sensors and actuators, with LabVIEW and NI-DAQmx driver software simplifying processes such as setpoint comparisons and output signal updates. Thanks to its low-latency PCI Express bus, the device ensures superior single-point I/O performance, making it especially suitable for applications requiring precise control.

The USB-6351 supports both analog and hardware-timed digital I/O on a single device, making it a cost-effective solution for device characterization and test automation. The maximum sampling rates are up to 1.25 MS/s for single-channel and 1.00 MS/s for multichannel analog input, accommodating 8 differential or 16 single-ended channels at a resolution of 16 bits. With multiple input ranges and overvoltage protection for each analog input channel, the device offers enhanced reliability. The maximum update rate for analog output channels is 2.86 MS/s for a single channel and 2.00 MS/s for two channels, maintaining 16-bit resolution throughout. Additionally, users benefit from 24 digital I/O channels with individual direction control and input voltage protection.

The dimensions of the USB-6351 are 10.4 x 6.8 x 1.4 inches, and it weighs 3 lb. 2 oz. The device comes with a three-year warranty and user manuals available for download. For pricing information, please contact a sales representative for a quote.