The National Instruments USB-6423 (part number: 789882-01) is a high-performance USB Data Acquisition (DAQ) device from the mioDAQ series, engineered to meet the rigorous demands of contemporary test and measurement applications. This versatile device offers 32 single-ended or 16 differential analog input channels with a resolution of 16 bits for accurate data capture. It also includes four analog output channels, each capable of providing output voltages from ± 10 V with a maximum update rate of 250 kS/s per channel. In addition to its analog capabilities, the USB-6423 features 16 digital I/O channels that can be configured for various functions, including programmable front-panel input (PFI), waveform generation, static I/O, timer, counter, and trigger operations, allowing users to tailor the configuration to their specific needs.

The USB-6423 supports USB Type-C bus power and integrates four onboard counters, making it a robust solution for a wide array of applications. The device allows selections from four different input ranges, spanning ± 200 mV to ± 10 V, while its digital I/O channels can be utilized for high-speed hardware-timed operations up to 10 MHz. Comprehensive programming support is provided through published APIs and examples compatible with LabVIEW, Python, C/C++, and NI’s free FlexLogger Lite data acquisition software.

Designed for ease of use, the USB-6423 encompasses a power source of +5 V with a maximum current range of +4.76 V to 5.17 V and utilizes a 36-position spring terminal connector for I/O access. With a weight of 590 g (1.30 lb) and dimensions of 116.7 mm x 177.0 mm x 30.4 mm (4.59 in. x 6.97 in. x 1.20 in.), this DAQ device is compact and manageable. The operating temperature range is between 0 and 55 degrees Celsius, accompanied by a noncondensing humidity range of 10% to 90%. For storage, the device can be maintained between -20°C and 70°C with a noncondensing humidity range of 5% to 95%. It is recommended to calibrate the device every two years and to allow for a 15-minute warm-up before operation to ensure optimal performance.