NI PCI-4451 PCI Bus Dynamic Signal Acquisition DSA Board

Technical Specifications

Model:PCI-4451

Brand:NI

Part No:PCI-4451

Product type:PCI Bus Dynamic Signal Acquisition(DSA) Board

ADC:24-bit delta-sigma ADC

Analog Input:2 simultaneous sampling channels

Max sampling rate:204.8kS/s

Input range:±10V,software selectable AC/DC coupling

Function:IEPE sensor excitation,built-in anti-aliasing filter,8 TTL DIO,2×24-bit counter,timing & multi-board synchronization

Overvoltage protection:±42.4V

Bus:32-bit PCI

Dimension:175mm107mm20mm

Weight:0.24kg

Operating temperature:0℃ ~ +55℃

Storage temperature:-20℃ ~ +70℃

Relative humidity:10~90% non-condensing

Certification:CE

System compatibility

PCI-4451 belongs to NI DSA dynamic signal acquisition platform.It works with standard PCI industrial PC,supported by NI-DAQmx driver and LabVIEW,widely used for vibration,acoustic noise,shock and frequency response measurement in legacy test systems.It is spare part for legacy test equipment overhaul.

Function

PCI-4451 is high-performance DSA board for dynamic signal measurement.It supports IEPE accelerometer and microphone sensors,with built-in anti-aliasing filter to suppress aliasing noise.Two channels synchronously sample signals for FFT spectrum analysis.Multi-card synchronization enables multi-point vibration test.

Installation

Insert PCI-4451 into computer PCI slot and fasten bracket.Connect sensors to 50pin shielded terminal block.Install NI-DAQmx driver.Take ESD protection before installation.

Interface

‑50-pin multi-function analog & digital I/O connector

‑PCI gold finger edge connector

‑Board status indicator

Feature

PCI-4451 classic NI dynamic signal acquisition board.Typical faults:50pin connector pin oxidation,IEPE excitation circuit failure,ADC measurement drift.Inspect sensor wiring and spectrum test before replacement.

Diagnostic

Fault phenomenon:no signal input,abnormal noise,channel imbalance.Check shielded sensor cable,transducer,PCI slot contact,NI-DAQmx driver and coupling/IEPE configuration.

Product Brief

PCI-4451 is NI PCI bus 2-channel 24-bit DSA board with max 204.8kS/s simultaneous sampling and IEPE power supply,for vibration,acoustic and frequency response testing and legacy dynamic test equipment renovation.Mainly used for maintenance and replacement of old test equipment.ESD protection must be followed during handling.