NI USB-4432 是一款專(zhuān)為聲音和振動(dòng)應(yīng)用設(shè)計(jì)的高性能數(shù)據(jù)采集卡。以下是其主要特點(diǎn)和功能：
最大采樣率：102.4 kS/s，能夠提供高精度的信號(hào)采集 。
模擬輸入通道：最大差分模擬輸入通道數(shù)量為5，其中4個(gè)通道集成了用于加速度計(jì)和麥克風(fēng)的集成電子壓電(IEPE)信號(hào)調(diào)理功能，第五個(gè)輸入通道不提供IEPE支持 。
模擬輸入耦合：支持AC-DC耦合，適用于各種信號(hào)類(lèi)型 。
高通濾波器截止頻率：0.1 Hz，內(nèi)置抗混疊濾波器，可自動(dòng)調(diào)整至采樣率 。
輸入接口：正面連接式為BNC，提供5個(gè)BNC接口 。
總線(xiàn)連接器：采用USB 2.0接口，方便與計(jì)算機(jī)連接 。
動(dòng)態(tài)范圍：100 dB，確保在各種應(yīng)用中都能提供高質(zhì)量的信號(hào)采集 。
電源要求：工作電壓為5V±0.25V，適用于多種電源環(huán)境 。
工作溫度：0℃～70℃，存儲(chǔ)溫度為-10℃～85℃，濕度為5%～95%，適用于各種環(huán)境條件 。
軟件支持：提供WIN7/VISTA/2000/XP下的驅(qū)動(dòng)程序及動(dòng)態(tài)連接庫(kù)，支持預(yù)觸發(fā)，最大可預(yù)采2K個(gè)點(diǎn) 。
此外，NI USB-4432 的技術(shù)參數(shù)在2011年5月進(jìn)行了更新，最新的NI-DAQmx驅(qū)動(dòng)解決了在使用這些設(shè)備時(shí)的主要問(wèn)題，確保了更高的測(cè)試精度和穩(wěn)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.
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