NI PXIe-4468 是一款高性能的 PXI 声音与振动模块，专为高精度测量设计，适用于麦克风、加速度计和其他具有大动态范围的传感器。以下是其主要特点和功能：

高精度测量：PXIe-4468 专为满足各种声音和振动应用的需求而设计，包括音频测试、汽车NVH和机器状态监测。

双通道动态信号生成和采集：该模块提供了双通道动态信号生成和双通道采集，能够满足各种测试要求。

多种增益设置：PXIe-4468 提供六种增益设置，用户可以根据应用程序的特定要求定制模块的输入范围。

AC/DC耦合和IEPE调理：模块具有软件可配置的AC/DC耦合、IEPE调理和纯单频发生器，确保使用麦克风、加速度计及其他传感器进行精确的测量。

差分放大器输出：PXIe-4468 的输出级是一个差分放大器，可以在软件中配置为伪差分模式，提供最佳性能。

内置音调发生器：该模块还具有内置音调发生器，使其成为声音和振动测试要求的全面和单一的解决方案。

软件支持：PXIe-4468 支持 NI-DAQmx 驱动程序和配置实用程序，简化了配置和测量过程。NI-DAQmx 支持 NI 编程环境以及 Python、ANSI C、C# 和 MathWorks MATLAB® 软件。

应用领域：PXIe-4468 可用于音频测试、汽车噪声、振动和声振粗糙度(NVH)、机器状态监测等声音和振动应用程序。

The NI PXIe-4468 is a high-performance PXI sound and vibration module designed for high-precision measurement and is suitable for microphones, accelerometers and other sensors with a large dynamic range. The following are its main features and functions:

High Precision measurement: The PXIe-4468 is designed to meet the needs of a variety of sound and vibration applications, including audio testing, automotive NVH and machine condition monitoring.

Dual channel dynamic signal generation and acquisition: This module provides dual channel dynamic signal generation and dual channel acquisition, which can meet various test requirements.

Multiple gain Settings: The PXIe-4468 offers six gain Settings that allow users to customize the input range of the module according to the specific requirements of the application.

AC/DC coupling and IEPE conditioning: The module features software-configurable AC/DC coupling, IEPE conditioning, and a pure single-frequency generator to ensure accurate measurements using microphones, accelerometers, and other sensors.

Differential Amplifier output: The output stage of the PXIe-4468 is a differential amplifier that can be configured in the software in pseudo-differential mode to provide the best performance.

Built-in tone generator: The module also has a built-in tone generator, making it a comprehensive and single solution for sound and vibration test requirements.

Software support: The PXIe-4468 supports NI-DAQmx drivers and configuration utilities, simplifying the configuration and measurement process. Ni-daqmx supports the NI programming environment as well as Python, ANSI C, C# and MathWorks MATLAB® software.

Applications: The PXIe-4468 can be used in audio testing, automotive noise, vibration and acoustic roughness (NVH), machine condition monitoring and other sound and vibration applications.