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PXI-4472
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National Instruments · PXI

PXI-4472

The National Instruments PXI-4472 is an eight-input dynamic signal acquisition module for sound and vibration measurements. It combines simultaneous sampling with integrated IEPE sensor conditioning and sample-rate-tracking antialiasing filters.

ManufacturerNational Instruments
ModelPXI-4472
Part Number778279-01 · 187123-01
Product TypeSound and vibration acquisition module
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Analog inputs8, simultaneously sampled
ADC resolution24 bits
Maximum sample rate102.4 kS/s per channel
Input range±10 V peak
Input couplingSoftware-selectable AC or DC
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Overview

Product overview

Key product information and technical features.

The PXI-4472 fits into PXI measurement systems requiring multichannel acquisition from accelerometers and microphones. Its built-in IEPE conditioning supports these sensors without a separate IEPE conditioning stage.

Multiple PXI-4472 modules can be synchronized for higher channel counts. For PXI systems, NI specifies PXI_STAR synchronization; the RTSI connection described for PCI versions should not be confused with the PXI synchronization path.

  • Simultaneous digitization across all eight input channels.
  • Integrated IEPE conditioning for accelerometers and microphones.
  • Built-in antialiasing filters automatically track the selected sample rate.
  • Independent software selection of IEPE excitation on each channel.
Verified specifications

Technical data

Verified product specifications.

Analog input channels8, simultaneous sampling
Input configurationPseudodifferential
ADC resolution24 bits
ADC architectureDelta-sigma
Sample-rate range1.0 to 102.4 kS/s
Input signal range±10 V peak
Input couplingAC or DC, software-selectable
AC coupling cutoff, −3 dB3.4 Hz
IEPE excitation0 or 4, independently selectable per channel; ±5% current tolerance mA
IEPE compliance24 V
Analog input connector typeSMB male
Module formatOne 3U CompactPCI slot
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National Instruments

Manufacturer

PXI

Modular instrumentation platform

PXI-4472

Sound and vibration acquisition module

Sensor interface

IEPE accelerometers and microphones

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Manuals & software

Technical resources

Manuals, software and technical resources for this model.

NI PXI-4472 Product InformationOfficial Product Page · ni.com
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NI 447x SpecificationsSpecifications PDF · download.ni.com
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NI: DSA Oversample Clock and FrequencyTechnical resource
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FAQ

Product-specific questions

Product-specific answers based on available technical information.

Does the PXI-4472 sample its inputs simultaneously?

Yes. All eight analog input channels are sampled simultaneously.

Can it provide excitation for IEPE sensors?

Yes. Each channel independently supports software-selectable 0 or 4 mA IEPE excitation, with 24 V compliance.

How does its AC cutoff differ from the PXI-4472B?

The PXI-4472 has a 3.4 Hz AC-coupling cutoff at −3 dB. The PXI-4472B has a lower 0.5 Hz cutoff; these are distinct models.

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