NI‑9234

4‑Channel, 51.2 kS/s/Ch, ±5 V, 24‑Bit C Series Sound & Vibration Input Module

Overview

Key Specifications

• Channels: 4 × simultaneous differential analog inputsdownload.ni.com

• Resolution: 24‑bit (Delta‑Sigma ADC)download.ni.com

• Sample Rate: 51.2 kS/s per channel (simultaneous)download.ni.com

• Voltage Range: ±5 V DCdownload.ni.com

• Dynamic Range: 102 dBdownload.ni.com

• Coupling: Software‑selectable AC (0.5 Hz) / DCdownload.ni.com

• IEPE Excitation: Software‑selectable 2 mA constant current (AC‑coupled)download.ni.com

• Anti‑Aliasing Filters: Integrated, auto‑adjusts to sampling ratedownload.ni.com

• Input Impedance: > 1 MΩ (IEPE on), > 10 GΩ (IEPE off)

• Overvoltage Protection: ±45 V (between terminals)NI

• Isolation: Channel‑to‑earth: 60 V DC continuous, 1,000 V RMS withstand (5 s)NI

• Connectors: 4 × BNC

• Operating Temp: ‑40 °C to +70 °Cdownload.ni.com

• Vibration/Shock: 5 g vibration, 50 g shockdownload.ni.com

Main Features

• 4‑channel simultaneous sampling for phase‑coherent vibration/acoustic datadownload.ni.com

• IEPE signal conditioning (2 mA) for accelerometers and microphonesdownload.ni.com

• TEDS support for automatic sensor recognition and scalingNI

• 102 dB dynamic range captures both small and large signalsdownload.ni.com

• Auto‑tuned anti‑aliasing filters simplify setupdownload.ni.com

• Compact, rugged C‑Series for portable/industrial usedownload.ni.com

Applications

• Noise, Vibration, and Harshness (NVH) testingdownload.ni.com

• Machine condition monitoring (fault detection, predictive maintenance)NI

• Structural vibration and modal analysisdownload.ni.com

• Acoustic measurements and microphone calibrationdownload.ni.com

• Automotive/aerospace component testingdownload.ni.com

Compatibility

• Software: NI‑DAQmx, LabVIEW, Python, C/C++download.ni.com

• Hardware: CompactDAQ chassis, CompactRIO, USB carrier (single‑module)download.ni.com