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National Instruments NI-9234 C Series Sound and Vibration Input Module
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National Instruments · CompactDAQ and CompactRIO

NI-9234

The NI-9234 is a four-channel C Series sound and vibration input module with simultaneous 24-bit acquisition at up to 51.2 kS/s per channel. It provides a ±5 V input range, selectable AC/DC coupling, and IEPE signal conditioning.

ManufacturerNational Instruments
ModelNI-9234
Part Number779680-01
Product TypeC Series Sound and Vibration Input Module
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Analog inputs4 simultaneous channels
Resolution24-bit
Sample rateUp to 51.2 kS/s/channel with internal timebase
Input range±5 V
Sensor excitationSelectable 2 mA IEPE
Connections4 BNC inputs
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Overview

Product overview

Key product information and technical features.

The NI-9234 fits CompactDAQ and CompactRIO systems for dynamic signal acquisition. Its simultaneous inputs support measurements from microphones and accelerometers, with onboard conditioning for IEPE sensors.

  • Simultaneous acquisition across all four analog input channels.
  • 24-bit delta-sigma analog-to-digital conversion.
  • Software-selectable AC/DC input coupling.
  • Built-in anti-aliasing filters automatically adjust to the sample rate.
  • Supports smart TEDS sensors.
Verified specifications

Technical data

Verified product specifications.

Analog input channels4 differential
ADC resolution24 bits
Sampling modeSimultaneous
Maximum sample rate, internal timebase51.2 kS/s/channel
Nominal input range-5 to +5 V
Input couplingAC/DC, software-selectable
IEPE excitation current2.0 minimum; 2.1 typical; software-selectable on/off mA
Front connections4 BNC
IsolationNone, channel-to-channel or channel-to-earth ground
Conformal coating, 779680-01No
Enclosed, 779680-01Yes
Condition & included items

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Included

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Compatibility

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National Instruments

Manufacturer

CompactDAQ / CompactRIO

Host system platforms

C Series

Modular I/O family

NI-9234

Sound and vibration input module

Inputs are non-isolated. Check sensor bias, common-mode voltage, and IEPE compliance limits before connection.
Manuals & software

Technical resources

Manuals, software and technical resources for this model.

NI-9234 Product PageManufacturer Product Page · ni.com
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NI-9234 SpecificationsSpecifications · ni.com
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NI 9234 DatasheetPDF Datasheet · download.ni.com
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NI-9234 Dimensional DrawingsDimensional Drawings And CAD Models · ni.com
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C Series Module and CompactDAQ or CompactRIO Hardware Compatibility with LabVIEWTechnical resource
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Shipping, warranty & returns

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Warranty
30-Day Warranty. Standard coverage applies.
Returns
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FAQ

Product-specific questions

Product-specific answers based on available technical information.

Can the NI-9234 measure sensors that do not require IEPE excitation?

Yes. It supports IEPE and non-IEPE sensors, with selectable AC/DC coupling and switchable IEPE conditioning.

Are the NI-9234 inputs electrically isolated?

No. There is no channel-to-channel or channel-to-earth-ground isolation.

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