National Instruments NI-9234

Part Number: NI-9234

The National Instruments NI-9234 is a robust Sound and Vibration Input Module featuring four analog input channels that are sampled simultaneously, making it ideal for accurate measurements with Integrated Electronics Piezoelectric (IEPE) sensors. This module, with part numbers 779680-01 and 779680-03, offers a dynamic range of 102 dB and supports sampling rates up to 51.2 kS/s per channel. The primary distinction between the two part numbers is that the 779680-01 model lacks conformal coating, while the 779680-03 is conformally coated, providing enhanced protection against environmental contaminants.

Weighing only 6.1 oz (173 g), the NI-9234 boasts a 24-bit resolution and is built to withstand harsh conditions with a vibration resistance of 5 g and shock resistance of 50 g. The module is equipped with built-in anti-aliasing filters that automatically adjust to the user-defined sampling rate, ensuring precise signal representation. It is compatible with CompactDAQ and CompactRIO platforms, as well as the NI USB-9162 single-module USB carrier, making it versatile for mobile applications such as in-vehicle noise, vibration, and harshness (NVH) testing, and industrial machine condition monitoring.

When coupled with the NI USB-9162 carrier, the NI-9234 operates as the NI USB-9234, connecting seamlessly to a computer via USB and allowing for panel mounting. This configuration supports both floating and ground-referenced signal sensors. The module necessitates the use of NI-DAQmx 9.2 or later, and users must install corresponding support for their selected Application Development Environment (ADE), including LabVIEW, LabWindows/CVI, C/C++, C#, or Visual Basic .NET. The NI-9234 features four BNC connectors for signal input, enhancing its integration capabilities in various applications. Both the NI-9234 and NI USB-9234 utilize advanced analog and digital filtering techniques to deliver accurate in-band signal representation while effectively rejecting out-of-band signals, functioning across three key bandwidths: passband, stopband, and anti-aliasing.