SCXI-1126 8通道频率输入模块 隔离式频率输入模块

【产品详情】

National Instruments SCXI-1126 频率输入模块

SCXI-1126（部件号：776572-26）是NISCXI系列的隔离式频率输入模块。该模块上的所有 8 个通道均具有频率-电压转换电路，具有可编程输入范围、阈值、迟滞和滤波功能。这些通道具有 250 kHz-128 kHz 的 10 个可选输入频率范围。每个通道还具有四个可选的 4 极点低通滤波器，截止频率为 1Hz-1 kHz。输出电压被多路复用到DAQ仪器的一个通道上。因此，用户可以在一次高速扫描操作中扫描并获得大量频率和模拟输入信号。NI SCXI-1126 适合 隔离 频率 生成 传感器 以及 其他 类型 的 模拟 和 数字 周期 信号 源。该设备配有 50 针公带状电缆后连接器和 32 针 DIN C 外螺纹前 I/O 连接器。

该频率输入模块使用最大 250 V 的数字和模拟输入信号运行。 SCXI 1126是完全软件可编程的，允许用户配置每个通道的频率输入范围、阈值电平、迟滞电平和输出滤波。每个通道的输入级与其他通道和机箱分开，最大为 250 Vrms。此外，每个通道都具有输入过电压保护功能，在上电或关断时，输入过电压最高可达 250 Vrms。隔离式模拟输入级由触发电路组成，该触发电路将输入波形与用户编程的阈值和迟滞进行比较。NI 设备 使用 NI- DAQmx 驱动 软件 运行 ， 该 软件 与 LabVIEW、 LabWindows/ CVI 或 Measurement Studio 等 软件包 / 应用 开发 环境 （ADE） 兼容。可以使用Measurement & Automation Explorer工具配置设备硬件。

由于输出滤波器的带宽较低，因此用户必须在修改设置后等待大约三秒钟，以使通道在用户进行精确测量之前保持静止。此外， NI- DAQ 还 自动 查询 模 块， 以 决定 模 块 输出 何时 稳定。NI 设备 的 尺寸 为 1.2 x 6.8 x 8.0 英寸。在物理维度上。

SCXI-1126 8通道频率输入模块 隔离式频率输入模块

【英文介绍】

National Instruments SCXI-1126 frequency input module

The SCXI-1126 (Part number: 776572-26) is an isolated frequency input module in the NISCXI family. All eight channels on the module feature frequency-voltage conversion circuits with programmable input range, threshold, hysteresis, and filtering capabilities. These channels have 10 selectable input frequency ranges from 250 kHz to 128 kHz. Each channel also has four optional 4-pole low-pass filters with a cutoff frequency of 1Hz-1 kHz. The output voltage is multiplexed onto a channel of the DAQ instrument. As a result, users can scan and obtain a large number of frequency and analog input signals in a single high-speed scanning operation. The NI SCXI-1126 is suitable for isolated frequency generation sensors and other types of analog and digital periodic signal sources. The unit comes with a 50-pin male ribbon cable rear connector and a 32-pin DIN C external thread front I/O connector.

The frequency input module operates with digital and analog input signals up to 250 V. The SCXI 1126 is fully software-programmable, allowing users to configure frequency input ranges, threshold levels, hysteresis levels, and output filtering for each channel. The input stage of each channel is separate from the other channels and chassis, with a maximum size of 250 Vrms. In addition, each channel has input overvoltage protection up to 250 Vrms when powered on or off. The isolated analog input stage consists of a trigger circuit that compares the input waveform to a user-programmed threshold and hysteresis. NI devices run with Ni-DAQMX driver software that is compatible with packages/application development environments (ades) such as LabVIEW, LabWindows/ CVI or Measurement Studio. Device hardware can be configured using the Measurement & Automation Explorer tool.

Because the bandwidth of the output filter is low, the user must wait about three seconds after modifying the Settings to keep the channel stationary before the user can make an accurate measurement. In addition, NI-DAQ automatically queries the module to determine when the module output is stable. NI devices measure 1.2 x 6.8 x 8.0 inches. In the physical dimension.

SCXI-1126 8通道频率输入模块 隔离式频率输入模块

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