Product Details:

NATIONAL INSTRUMENTS CDAQ-9171 is a compact 1-slot USB 2.0 CompactDAQ chassis, part number 781425-01, designed for portable small-scale sensor measurement systems. It adopts USB bus-powered design, draws maximum 500mA from USB 5V supply, and undertakes timing control, data synchronization and data transmission between host computer and C series I/O modules. It carries four built-in 32-bit general-purpose counter/timers, accessible via hardware-timed digital C series modules, supporting quadrature encoder reading, PWM signal generation, event counting, pulse output and frequency measurement. It supports mixed signal acquisition by installing one C series module, covering analog input, analog output, digital I/O and communication measurement. The operating temperature range is -20℃ to 55℃, dimension 131.4mm × 88.6mm × 33.3mm, weight 353g. This DAQ chassis is widely used for portable test, available stock are refurbished replacement spares for vintage test and measurement systems.

This chassis connects PC and C series I/O modules through USB 2.0 high-speed interface, plug and play, compatible with LabVIEW, NI-DAQmx driver. Users can freely match NI C series modules such as voltage acquisition, thermocouple, strain, digital I/O and CAN communication to build customized measurement systems. It is suitable for field portable test, product verification and small closed-loop control. The built-in timing engine ensures stable hardware-timed acquisition and output, and supports multiple concurrent measurement tasks. The locking USB connector design avoids loose connection in vibration environment.

It adopts compact metal shell structure, supports desktop placement and DIN rail mounting. Equipped with USB-B interface with locking screw, no external DC power supply required under normal condition. Hot swap operation is not supported; close the measurement task and disconnect USB before replacing C series modules. The structure meets industrial anti-vibration requirements for laboratory and field portable installation.

It is widely deployed in portable field test stations, product verification benches, laboratory sensor calibration racks and legacy CompactDAQ measurement systems needing single slot USB acquisition. Typical application scenarios include portable temperature and voltage test system setup, old cDAQ measurement chassis replacement and vintage measurement platform retrofit. Automation integrators select this NI CDAQ-9171 for its 1 C series slot,USB2.0 bus powered,4 32-bit counter/timers,portable compact chassis.