Product Introduction

The NI PCI-4472 is an 8-channel 24-bit high-precision dynamic signal acquisition card (DSA) launched by National Instruments (NI). Based on the standard PCI bus, it is specifically designed for frequency-domain measurements such as sound, vibration, noise, and modal analysis. It integrates IEPE signal conditioning and has an internal anti-aliasing filter, supporting multi-card synchronization. It is widely used in vibration testing, acoustic measurement, structural health monitoring, NVH, and industrial equipment diagnosis. The product has been discontinued, and its replacement model is the PXIe-4472.

II. Basic Information

Model: PCI-4472

Material Number: 779311-01

Brand: National Instruments NI

Bus: PCI 32-bit

Number of Channels: 8 analog inputs

Resolution: 24 bits

Maximum Sampling Rate: 102400 samples per second

Dynamic Range: 110 decibels

Interface: 8 channels BNC, 1 channel SMB trigger

Card Specifications: Standard PCI half-length card

Operating Temperature: 0 to 55 degrees Celsius

III. Application Scope

Vibration measurement and fault diagnosis

Noise acoustic test microphone array

Modal analysis of structural dynamics testing

IEPE acceleration sensor signal acquisition

Industrial equipment condition monitoring NVH testing

Laboratory high-precision frequency domain analysis

IV. Analog Input Specifications

Channel Configuration: 8 channels full differential synchronous input

Sampling Resolution: 24-bit Delta-Sigma ADC

Maximum Sampling Rate: 102400 samples per channel per second

Signal Bandwidth: DC to 45 kHz

Dynamic Range: 110 decibels

Total Harmonic Distortion: -95 decibels

Input Coupling: Independent AC/DC programmable per channel

IEPE Power Supply: Each channel selectable 0 mA or 4 mA constant current

Input Range: ±10 V, ±1 V, two-step programmable

Input Impedance: 1 megohm, parallel 240 picofarads

Anti-aliasing Filter: Built-in programmable high-order filter matching sampling rate automatically

TEDS Support for Sensor Electronic Data Sheet Automatic Recognition

V. Trigger and Synchronization

Trigger Port: 1 channel SMB external trigger

Synchronization Bus: Supports RTSI bus multi-card synchronization

Multi-card Expansion: Can expand multiple PCI-4472 cards to form a higher channel system

Clock Source: Internal clock or external SMB clock input

VI. Output and Digital IO

No analog output channels

No general digital IO

No counter function

VII. Physical and Electrical Characteristics

Form: Standard PCI half-length card

Interface Panel: 8 channels BNC input, 1 channel SMB trigger

Power Supply: Powered by PCI slot +5 V +12 V

Operating Temperature: 0 to 55 degrees Celsius

Operating Humidity: 10% to 90% without condensation

Weight: Approximately 250 grams

VIII. Software and Drivers

Driver Software: NI-DAQmx

Development Environment: LabVIEW, LabWindowsCVI, C#, C++, Visual Basic

Operating Systems: Windows XP, 7, 10, 32-bit, 64-bit

Supporting Tools: Sound and Vibration Toolkit, Spectrum Analysis, Modal Analysis Software

IX. Core Features

8-channel 24-bit synchronous acquisition, high precision, low noise

Integrated IEPE calibration, direct support for accelerometers and microphones

Built-in automatic anti-aliasing filter, simplifies front-end design

110 decibels dynamic range, suitable for weak signal measurement

RTSI multi-card synchronization, easy to expand channel count

BNC interface plug-and-play, suitable for industrial and laboratory precision measurement

X. Alternative Information

Status: Out of production

Recommended Replacement: PXIe-4472 or USB-4472