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  • 产品名称: NI 9234
    上市日期:2017-05-02

     软件可选的IEPE信号调理 (0 mA或2 mA)

  • 每通道最高51.2 kS/s采样速率; 交流耦合 (0.5 Hz)

  • 24位分辨率; 102 dB动态范围; 防混叠滤波器

  • 4路同步采样模拟输入, ±5 V输入范围

  • 兼容智能TEDS传感器

  • NIST校准认证书

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     NI 9234作为4通道C系列动态信号采集模块,能针对配备NI CompactDAQ或NI CompactRIO系统的集成电路压电式(IEPE)与非集成电路压电式(IEPE)传感器,进行高精度音频测量。NI 9234具有102 dB动态范围,并能对加速度传感器和麦克风进行软件可选式集成电路压电式(IEPE)信号调理。4条输入通道借助自动调节采样率的内置抗混叠滤波器,同时以每通道高达51.2 kHz的速率对信号进行数字化。

    推荐使用的软件
    NI声音与振动分析软件(包含:NI声音和振动测量套件及NI声音和振动套件)提供信号处理功能,用于声音测量、分数倍频程分析、频率分析、瞬态分析和阶次跟踪。NI分析软件具有NI声音与振动助手(Sound and Vibration Assistant)交互式软件,能够快速采集、分析并记录声学、噪音和振动数据。借助灵活且基于配置的测量库和开放式分析功能,声音与振动助手(Sound and Vibration Assistant)能够基于软件进行独特的测量,从而快速采集数据,并创建自定义的应用程序。

     

    General
    Product Family
    Industrial I / O
    Signal Conditioning
    Measurement Type
    加速计
    麦克风
    Form Factor
    CompactDAQ
    CompactRIO
    Operating System / Target
    Windows
    RoHS Compliant

    模拟输入
    单端通道
    0
    差分通道
    4
    模拟输入分辨率
    24 bits
    最大电压范围
    -5 V - 5 V
    同步采样

    Simultaneous Sampling

    A property of a measurement system in which each input or output channel is digitized or updated at the same instant. You will need simultaneous sampling for applications where the time relationship between inputs is important, such as phase analysis of AC signals.


    Because channel-dedicated analog-to-digital converters (ADCs) are used to sample data simultaneously between inputs, the maximum sample rate is applicable to each channel and is not divided by the total number of channels. Devices that don’t have simultaneous sampling capabilities use multiplexing to connect each channel to its ADC.


    Interval scanning is a low-cost option to simulate simultaneous sampling for low-frequency signals such as temperature or pressure. This method scans the input channels at one interval and uses a second interval to determine the time before repeating the scan. The input channels are scanned within microseconds, creating the effect of simultaneously sampling the input channels.

    Yes
    激励电流
    2 mA
    动态范围

    Dynamic Range (RF Only)

    The ratio of the highest signal level a circuit can handle to the smallest signal level it can handle (usually equal to the noise level), normally expressed in dB.

    102 dB
    Maximum Bandwidth
    23.04 kHz
    输入阻抗
    305 kOhm
    信号调理
    抗混叠滤波器
    电流激励
    模拟输出
    Number of Channels
    0
    Digital I / O
    Bidirectional Channels
    0
    Input-Only Channels
    0
    Output-Only Channels
    0
    Counters / Timers
    Counters
    0
    Physical Specifications
    Length
    9 cm
    Width
    2.3 cm
    I / O Connector
    BNC连接器
    Operating Temperature
    -40 °C - 70 °C

    相关案例 / Case 更多>>
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