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National Instruments cDAQ-9189 CompactDAQ Chassis

The National Instruments cDAQ-9189 (Part Numbers: 785065-01, 785065-02, 787930-01) is an 8-slot CompactDAQ Ethernet chassis designed for distributed sensor measurement applications. This chassis enables synchronized measurements across multiple channels, making it ideal for high-performance data acquisition. With support for parallel operation of advanced output modules, it allows users to run multiple software-timed tasks while maintaining precise synchronization. The cDAQ-9189 also features a programmable debouncing filter on each Programmable Function Interface (PFI) signal, ensuring accurate signal processing by sampling inputs through a user-configured Filter Clock from the chassis time base. The 785065-02 variant includes conformal coating for enhanced environmental protection.

For precise edge counting applications, the cDAQ-9189 employs a high-resolution counter that can be configured to count rising or falling edges on the Source input. Users can control the counting direction and retrieve counter values on demand or through a sample clock. Buffered edge counting enables the device to store sampled values in FIFO memory, facilitating high-speed data transfers via the STC3 system. Additionally, the chassis supports single-pulse width measurement by counting edges on the Source input while the Gate input remains active, then storing the count in FIFO upon deactivation of the Gate signal.

The cDAQ-9189 is fully compatible with NI-DAQmx driver software, allowing seamless integration with application development environments such as LabVIEW Real-Time Module. This compact and lightweight device weighs 37.6 oz and measures 10.74 x 3.47 x 2.45 inches, making it easy to deploy in various test environments. It is built for durability, with an operating temperature range of -40°C to 70°C, a storage temperature range of -40°C to 85°C, and humidity tolerance of 10% to 90% RH (operating) and 5% to 95% RH (storage).