CompactDAQ

CompactDAQ is a modular data acquisition system from National Instruments (NI) designed for desktop and bench-top measurement. It combines a compact chassis with plug-in signal-conditioning I/O modules and connects to a host computer via USB or Ethernet, allowing data acquisition, logging, and controlled measurements.

Hardware features include a backplane in the chassis that provides timing, synchronization, and power to the installed I/O modules. The modules cover analog input and output, digital I/O, and counters and timing interfaces, along with specialty interfaces such as thermocouple, IEPE, and bridge sensing. Modules are hot-swappable and can be mixed to tailor a setup. A single chassis can synchronize multiple channels and maintain accurate sample timing across modules using a common clock.

Software and data handling rely on NI-DAQmx drivers, enabling configuration of tasks, channels, timing, and triggering from LabVIEW, LabWindows/CVI, or other software. The software stack supports data collection, real-time monitoring, and exporting data to formats such as TDMS or ASCII, and integrates with NI-MAX for device discovery and testing.

Typical applications span laboratory testing, industrial process monitoring and control, environmental data logging, automotive and machinery testing, and vibration analysis. CompactDAQ provides a scalable, portable solution for projects requiring flexible I/O, modular signal conditioning, and straightforward software integration with NI tools.