The National Instruments cDAQ-9191 is a single slot CompactDAQ chassis with wireless and Ethernet connectivity for C Series modules. It provides a compact networked measurement platform for remote, portable, and distributed sensor data acquisition. The chassis is designed for applications where cabling to a host computer is difficult or impractical.
Wireless connectivity allows the chassis to be placed near sensors without a network cable. Ethernet connectivity provides a wired option when available. Engineers can select the C Series module that matches the measurement requirement and use the chassis as a dedicated remote acquisition node.
Single Slot Architecture
The cDAQ-9191 supports one C Series module. This design is suitable for applications that need one measurement function at a remote location, such as temperature, voltage, current, digital I O, or counter operations.
The single slot format simplifies deployment and documentation. A module can be replaced when test requirements change.
Wireless and Ethernet Connectivity
The chassis supports wireless communication for remote installation. Engineers should plan network security, signal coverage, and power. Ethernet connectivity provides a wired alternative for fixed installations.
Network planning should consider bandwidth, latency, and data storage. Local buffering and data reduction can help manage wireless bandwidth. Documentation of network settings helps maintenance.
Power and Installation
The chassis requires a power source suitable for remote operation. Engineers should consider battery or local power options depending on the installation. The chassis should be placed where environmental conditions are within the operating range.
C Series Module Compatibility
The cDAQ-9191 is part of the CompactDAQ platform and works with compatible C Series modules. Module selection should consider signal range, isolation, resolution, sampling rate, and connector type.
Applications
The cDAQ-9191 is suitable for remote sensor monitoring, environmental measurement, portable testing, and industrial data acquisition. It supports distributed measurement where cabling is limited.
Maintenance
Maintenance includes checking module seating, verifying wireless and Ethernet communication, and reviewing software configuration. Documentation of module type and network settings helps maintain repeatability.
Summary
The National Instruments cDAQ-9191 Wireless CompactDAQ Chassis provides a single slot platform with wireless and Ethernet connectivity for C Series modules. It supports remote and portable data acquisition, compact system design, and flexible module selection. The cDAQ-9191 is a practical chassis for distributed measurement applications.




