NI PXI-4461 186900T-11L High-Performance Data Acquisition

High-Precision Data Acquisition: Supports synchronous acquisition and output of multi-channel analog signals for dynamic signal analysis.

Vibration & Acoustic Measurement: Connects to sensors like accelerometers and microphones for equipment fault diagnosis, noise testing, etc.

Audio Testing: Enables audio signal acquisition and playback for performance evaluation of audio devices and systems.

Real-Time Signal Processing: Built-in digital signal processing (DSP) functions for real-time filtering, FFT analysis, and more on acquired signals.

Automotive NVH (Noise, Vibration, and Harshness) testing

Industrial equipment vibration monitoring and fault analysis

Acoustic environment measurement and noise control

Audio device R&D and quality inspection

Laboratory dynamic signal research

Channels: 4 channels (differential input)

Sampling Rate: Up to 102.4 kS/s (single channel), supports multi-channel synchronous sampling

Resolution: 24-bit ADC with 115 dB dynamic range

Frequency Response: 0.5 Hz to 44.1 kHz (typical)

Input Range: Selectable ±10 V, ±5 V, ±1 V, ±0.5 V

Channels: 2 channels (differential output)

Sampling Rate: Up to 102.4 kS/s (single channel)

Resolution: 24-bit DAC with 108 dB dynamic range

Output Range: Selectable ±10 V, ±5 V

Digital I/O Lines: 8 general-purpose lines (configurable for triggering or status control)

Trigger Modes: Supports software triggering, hardware triggering (PXI trigger bus, external trigger), and synchronous triggering (multi-device clock synchronization)

Anti-Aliasing Filter: Built-in programmable anti-aliasing filter with dynamically adjustable cutoff frequency

Signal Conditioning: Integrated IEPE (Integrated Electronics Piezoelectric) excitation source for direct connection to IEPE sensors

Clock Stability: Built-in low-noise clock with support for external clock input to enhance synchronization accuracy

PXI Interface: Supports PXI Express bus, compatible with PXI and PXIe chassis

Signal Interfaces: Connects to sensors via NI SCB-68 or SCB-44 terminal blocks with BNC or screw terminal interfaces

Power Supply: Powered by the PXI chassis, no additional power adapter needed

Operating Systems: Supports Windows (7/10/11), Linux, LabVIEW Real-Time, etc.

Software Drivers: Compatible with NI-DAQmx drivers, supports development environments like LabVIEW, C/C++, and Python

Modular Expansion: Can be combined with other PXI modules (e.g., NI PXI-4472, PXI-5441) to build complex testing systems

NI-DAQmx: Provides a unified driver interface for multi-channel configuration and real-time data acquisition

LabVIEW: Graphical programming environment with extensive signal analysis and processing toolkits

API Support: Offers API interfaces for languages like C, C#, and Python for easy integration into custom applications

NI Sound and Vibration Measurement Suite: Designed for acoustic and vibration measurement, including spectrum analysis, octave analysis, etc.

NI SignalExpress: Enables quick configuration of data acquisition and analysis workflows without programming

MathWorks MATLAB: Supports data import and advanced algorithm development

High Resolution & Low Noise: 24-bit ADC and low-noise design for weak signal detection (e.g., acoustic measurements with microphones).

IEPE Integration: Directly connects to IEPE sensors without extra signal conditioning, simplifying system setup.

Synchronization Performance: Supports multi-module clock synchronization for scalable multi-channel testing (e.g., vehicle NVH testing).

Real-Time Processing: Built-in DSP chip executes real-time filtering, windowing, etc., reducing host load during acquisition.

Reliability & Durability: Meets industrial standards for lab and field testing environments.