描述
产品概述
NI PXIe-6124是美国国家仪器（NI）推出的高性能PXI Express数据采集模块，专为多通道同步采样与混合信号处理设计。其集成模拟输入/输出、数字I/O及计数器功能，适用于工业自动化、精密测试及科研领域的高精度测量需求。
核心参数与功能
模拟输入（AI）
-通道配置：4路同步采样通道（支持单端或差分输入）；
-分辨率与采样率：16位分辨率，单通道最高4 MS/s采样速率；
-输入范围：默认±10 V（可扩展至高压测量）；
-同步特性：四通道独立时钟同步，适用于多传感器并行采集。
模拟输出（AO）
-通道与性能：2路16位模拟输出，单通道更新速率4 MS/s，双通道2.5 MS/s；
-应用场景：高速波形生成（如PWM信号、动态控制信号）。
数字I/O与计数器
-数字I/O：24条通用数字线，支持5 MHz时钟信号；
-计数器资源：2个32位计数器，最大频率80 MHz，支持正交编码器解码（X4模式）及脉冲测量。
接口与扩展
-总线类型：PXI Express x4接口，独享5 GT/s带宽；
-兼容性：
-支持与PXIe机箱（如NI PXIe-1073）无缝集成；
-可扩展SCXI信号调理模块（如SCB-68）以适配传感器信号。
技术特点
高精度与可靠性：
-16位分辨率下保持低噪声（典型噪声水平<15µV p-p）；
-通道间隔离度>100 dB（减少串扰影响）。
软件生态支持：
-预装NI-DAQmx驱动及LabVIEW SignalExpress交互式配置工具；
-兼容LabVIEW、Python（通过NIDAQmx Python库）等开发环境。
同步与触发：
-支持PXI触发总线（Star Trigger）实现多设备同步；
-外部时钟输入/输出功能（如10 MHz参考时钟分配）。
Product Overview
NI PXIe-6124 is a high-performance PXI Express data acquisition module launched by National Instruments(NI),designed for multi-channel synchronous sampling and mixed signal processing.It integrates analog input/output,digital I/O and counter functions,and is suitable for high-precision measurement needs in the fields of industrial automation,precision testing and scientific research.
Core parameters and functions
Analog input(AI)
-Channel configuration:4 synchronous sampling channels(single-ended or differential inputs are supported);
-Resolution and sampling rate:16-bit resolution,a maximum sampling rate of 4 MS/s per channel;
-Input range:Default±10 V(scalable to high voltage measurement);
-Synchronization features:Four-channel independent clock synchronization,suitable for multi-sensor parallel acquisition.
Analog output(AO)
-Channels and performance:2 channels 16-bit analog output,single channel update rate 4 MS/s,dual channel 2.5 MS/s;
-Application scenario:High-speed waveform generation(such as PWM signals,dynamic control signals).
Digital I/O and Counter
-Digital I/O:24 universal digital lines,supporting 5 MHz clock signal;
-Counter resources:2 32-bit counters,maximum frequency of 80 MHz,support quadrature encoder decoding(X4 mode)and pulse measurement.
Interfaces and extensions
-Bus type:PXI Express x4 interface,exclusive 5 GT/s bandwidth;
-compatibility:
-Supports seamless integration with PXIe chassis(such as NI PXIe-1073);
-Scalable SCXI signal conditioning module(such as SCB-68)to adapt to sensor signals.
Technical Features
High precision and reliability:
-Keep low noise at 16-bit resolution(typical noise level<15µV p-p);
-Channel isolation>100 dB(reduce crosstalk impact).
Software Ecological Support:
-Preinstalled with NI-DAQmx driver and LabVIEW SignalExpress interactive configuration tools;
-Compatible with development environments such as LabVIEW,Python(through the NIDAQmx Python library).
Synchronization and Triggering:
-Supports PXI trigger bus(Star Trigger)to achieve multi-device synchronization;
-External clock input/output functions(such as 10 MHz reference clock allocation).
