CDAQ-9181 National Instruments 1-Slot CompactDAQ Ethernet Chassis

Description

CDAQ-9181 National Instruments 1-Slot CompactDAQ Ethernet Chassis

Product Dimensions：

Product Description

The NI cDAQ-9181 is a 1-slot Ethernet chassis for the CompactDAQ platform. As a single-slot, network-based data acquisition system, it provides the communication, timing, and power for one C Series I/O module. This makes it an excellent choice for small, distributed, or portable sensor measurement systems.

Product Specifications

The core specifications of the cDAQ-9181 revolve around its physical characteristics and connectivity.

• Bus Connector: Ethernet, supporting 10/100 Mbps communication rates.
• Slot Count: 1 C Series module slot.
• Operating Temperature: 0 °C to 55 °C. To maintain performance and accuracy in ambient temperatures between 45 °C and 55 °C, the chassis must be horizontally mounted to a metal panel or surface.
• Synchronization: This model does not support onboard synchronization with other chassis.
• Counters/Timers: It includes four 32-bit general-purpose counters/timers. These are accessible through an installed hardware-timed digital C Series module, enabling functions like frequency measurement, event counting, and quadrature encoding.
• Dimensions (unloaded): 194.0 mm × 88.7 mm × 33.6 mm.
• Weight (unloaded): Approximately 470 g (16.6 oz).

Product Advantages

• Portability and Flexibility: The cDAQ-9181’s compact size and Ethernet connectivity make it highly portable. You can place the chassis close to the test subject, which reduces the need for long sensor cables and minimizes signal degradation.
• Distributed Measurements: As an Ethernet-based system, the cDAQ-9181 allows you to place measurement points at a distance from the host PC, which is useful for large-scale or distributed sensor networks.
• Modular Architecture: By accepting any single C Series I/O module, the chassis is highly flexible. You can choose from over 50 different modules to measure a variety of signals like temperature, strain, voltage, and current, all with a single chassis.
• Built-in Counter/Timers: The four onboard counters/timers make the cDAQ-9181 a cost-effective solution for applications that require frequency measurements, event counting, or quadrature encoding without needing a separate module.

Product Applications

The cDAQ-9181 is well-suited for a variety of applications where a single-slot, network-based system is a good fit.

• Portable or Benchtop Systems: Its small size makes it an excellent choice for a simple data acquisition system on a lab bench or for field testing and troubleshooting.
• Small, Distributed Sensor Systems: It’s ideal for a single-point measurement in a larger system, where you need to collect data from one specific location over a network.
• Academic and Educational Labs: The chassis is a great tool for teaching students the fundamentals of data acquisition and sensor measurements.

Precautions

To ensure the safety and proper function of the cDAQ-9181, please be aware of the following:

• Power Supply: The cDAQ-9181 requires an external power supply. Be sure to use the correct power supply and follow the wiring instructions to avoid damage.
• Mounting: To meet its shock and vibration specifications, the chassis must be properly mounted. For high-temperature environments (45 °C to 55 °C), it must be mounted to a metal surface for heat dissipation.
• ESD Precautions: Always follow proper electrostatic discharge (ESD) precautions when handling the chassis and C Series modules to prevent damage to the sensitive electronics.
• Indoor Use Only: The device is designed for indoor use and should not be exposed to harsh environmental conditions.

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