- 51.2 kS/s per-channel maximum sampling rate, ±5 V input
- 24-bit resolution, 102 dB dynamic range, antialiasing filters
- Software-selectable AC/DC coupling, AC-coupled (0.5 Hz)
- Software-selectable IEPE signal conditioning (0 or 2 mA)
- Smart TEDS sensor compatibility
- Hi-Speed USB data transfer and USB bus-powered
 Data Sheet
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The NI USB-9234 is a USB-based four-channel C Series dynamic signal acquisition module for making high-accuracy audio frequency measurements from integrated electronic piezoelectric (IEPE) and non-IEPE sensors. It delivers 102 dB of dynamic range and incorporates software-selectable AC/DC coupling and IEPE signal conditioning for accelerometers and microphones. The four input channels simultaneously digitize signals at rates up to 51.2 kHz per channel with built-in antialiasing filters that automatically adjust to your sampling rate.
Recommended Software
NI sound and vibration analysis software, including the NI Sound and Vibration Measurement Suite and the NI Sound and Vibration Toolkit, provides signal processing functionality for performing audio measurements, fractional-octave analysis, frequency analysis, transient analysis, and order tracking. NI analysis software features NI Sound and Vibration Assistant interactive software for quickly acquiring, analyzing, and logging acoustic, noise, and vibration data. With a configuration-based, flexible measurement library and open-analysis capability, the Sound and Vibration Assistant is designed for quick data capture through a unique software-based measurement approach to create customized applications.
Additional Product Information
Related Information
Specifications Documents
Specifications Summary
| General | |
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| Form Factor | USB |
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| OS Support | Windows, Linux, Mac OS |
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| Measurement Type | IEPE accelerometer |
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| Analog Input | |
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| Number of Channels | 4 DI |
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| Sample Rate | 51.2 kS/s/ch |
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| Resolution | 24 bits |
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| Simultaneous Sampling | Yes |
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| Maximum On-Board Memory | 0 samples |
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| Maximum Voltage Measurement Range | -5..5 V |
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| Range Sensitivity | 176 nV |
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| Minimum Voltage Measurement Range | -5..5 V |
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| Range Sensitivity | 176 nV |
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| Integrated Signal Conditioning | Anti-aliasing filter, Current excitation |
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| Analog Output | |
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| Number of Channels | 0 |
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| Digital I/O | |
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| Number of Channels | 0 |
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| Physical Specifications | |
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| Length | 14.1 cm |
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| Width | 8.6 cm |
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| Height | 2.5 cm |
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| I/O Connector | BNC connectors |
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