NI USB-4432 是一款专为声音和振动应用设计的高性能数据采集卡。以下是其主要特点和功能：

最大采样率：102.4 kS/s，能够提供高精度的信号采集 。

模拟输入通道：最大差分模拟输入通道数量为5，其中4个通道集成了用于加速度计和麦克风的集成电子压电(IEPE)信号调理功能，第五个输入通道不提供IEPE支持 。

模拟输入耦合：支持AC-DC耦合，适用于各种信号类型 。

高通滤波器截止频率：0.1 Hz，内置抗混叠滤波器，可自动调整至采样率 。

输入接口：正面连接式为BNC，提供5个BNC接口 。

总线连接器：采用USB 2.0接口，方便与计算机连接 。

动态范围：100 dB，确保在各种应用中都能提供高质量的信号采集 。

电源要求：工作电压为5V±0.25V，适用于多种电源环境 。

工作温度：0℃～70℃，存储温度为-10℃～85℃，湿度为5%～95%，适用于各种环境条件 。

软件支持：提供WIN7/VISTA/2000/XP下的驱动程序及动态连接库，支持预触发，最大可预采2K个点 。

此外，NI USB-4432 的技术参数在2011年5月进行了更新，最新的NI-DAQmx驱动解决了在使用这些设备时的主要问题，确保了更高的测试精度和稳定性 。

The NI USB-4432 is a high-performance data acquisition card designed for sound and vibration applications. The following are its main features and functions:

Maximum sampling rate: 102.4kS /s, which can provide high-precision signal acquisition.

Analog input channels: The maximum number of differential analog input channels is 5, four of which integrate integrated Electronic Piezoelectricity (IEPE) signal conditioning for accelerometers and microphones, and the fifth input channel does not provide IEPE support.

Analog input coupling: Support AC-DC coupling, suitable for various signal types.

High-pass filter cut-off frequency: 0.1Hz, built-in anti-aliasing filter, can be automatically adjusted to the sampling rate.

Input interface: Front connection type is BNC, providing 5 BNC interfaces.

Bus connector: USB 2.0 interface, easy to connect with the computer.

Dynamic range: 100 dB, ensuring high quality signal acquisition in a variety of applications.

Power requirements: Operating voltage is 5V±0.25V, suitable for a variety of power supply environments.

Operating temperature: 0 ° C ~ 70 ° C, storage temperature: -10 ° C ~ 85 ° C, humidity: 5% ~ 95%, suitable for various environmental conditions.

Software support: Provide WIN7/VISTA/2000/XP under the driver and dynamic connection library, support pre-trigger, maximum pre-pick 2K points.

In addition, the technical parameters of the NI USB-4432 were updated in May 2011, and the latest NI-DAQMX drivers solve the main problems when using these devices, ensuring higher test accuracy and stability.