Description

NI  PXI-4462  high-performance sound and vibration measurement module

Functional features:
High resolution and sampling rate: With a 24-bit resolution and a sampling rate of 204.8kS/s, it can accurately collect sound and vibration signals and capture signal details.
Multi-channel acquisition: It provides four-channel dynamic signal acquisition, enabling simultaneous measurement of multiple signal sources. It is suitable for scenarios where multiple signals need to be collected synchronously, such as multi-point vibration measurement or multi-channel audio testing.

Flexible gain setting: There are six gain Settings, and the input range can be configured to adapt to signal inputs of different amplitudes. The analog overload point of the 0dB gain range is approximately 10.7Vpk.
Signal conditioning function: Supports software-configurable AC/DC coupling and IEPE (Integrated Electro-piezoelectric) conditioning, capable of processing signals from various sensors such as microphones and accelerometers. It can also preprocess signals through a high-pass filter with a cut-off frequency of 3.4Hz.

Overload detection: It features a digital overload detection function, which can identify overloads before the module fixes gain and offset errors, and capture overflow Settings in the ADC filter, which helps ensure the reliability of data acquisition.
Input configuration: It can handle two types of analog input terminal configurations, differential and pseudo-differential. Users can flexibly choose according to their actual needs to better adapt to different signal sources and devices under test.

Application fields: It is suitable for various scenarios such as environmental noise testing, rotating machinery assessment, audio assessment, vibration analysis, machine condition monitoring, acoustic measurement, automotive noise and vibration, and acoustic roughness (NVH) measurement.

Software compatibility Compatible with software packages or application development environments such as LabVIEW, LabWindows/CVI, Microsoft Visual C++, Microsoft Visual Basic, Borland C++ and Microsoft.NET, It is convenient for users to conduct programming and data processing and analysis.

Technical specification parameters:
Sampling and resolution: 24-bit resolution, sampling rate of 204.8kS/s, capable of simultaneous sampling and synchronization, accurately capturing the details of sound and vibration signals.
Number of channels: It has the capability of four-channel dynamic signal acquisition, allowing simultaneous measurement of multiple signal sources, and is suitable for scenarios such as multi-point vibration measurement.

Input range and gain: There are six gain Settings, with an input range of ±316mV to ±42.4V. The analog overload point in the 0dB gain range is approximately 10.7Vpk.
Filter: The cut-off frequency of the high-pass filter is 3.4Hz, which can preprocess the signal and reduce low-frequency interference.
Input configuration: Supports two types of analog input terminal configurations, differential and pseudo-differential. Automatically configured to differential mode after power-on.

Dynamic range and distortion: The dynamic range reaches 118dB, the total harmonic distortion (THD) is approximately -107 dB, the amplitude flatness within the frequency range of DC to 92kHz is ±0.1dB, and the signal measurement accuracy is high.
Excitation current: Supports IEPE (Integrated Electronic Piezoelectric) conditioning, with an excitation current of 10mA, which can directly power the relevant sensors.

Interface type: The I/O interface is a BNC connector and an SMB female connector, which is convenient for connection with sensors and other devices.
Bus type: PXI hybrid compatible bus, module width is 1 slot, supporting MXI (Multi-System Expansion Interface).