描述
产品定位与功能
NI 3840系列推测为模块化数据采集（DAQ）设备，可能属于CompactDAQ或PXIe平台的扩展模块，专为高密度信号采集、工业控制及分布式测试系统设计。其核心功能可能涵盖多通道模拟输入/输出、数字I/O及计数器功能，支持复杂工业环境下的实时数据交互。
核心参数推测
模拟输入（AI）
-通道配置：16通道差分输入（等效32单端通道）；
-分辨率与采样率：24位分辨率，单通道最大采样率200 kS/s，支持多通道同步；
-输入范围：±0.1 V至±10 V可编程增益调节。
模拟输出（AO）
-通道数：4路独立输出；
-分辨率与更新率：16位，最高100 kS/s。
数字I/O（DIO）
-通道数：32位双向端口；
-电平兼容性：3.3 V/5 V TTL兼容。
计数器/定时器
-数量与功能：4个32位计数器，支持编码器接口、PWM生成及频率测量。
技术特点
高集成度与扩展性
-单模块整合AI、AO、DIO及计数器功能，适用于紧凑型机箱部署；
-支持通过EtherCAT或PXI背板实现多模块同步。
工业级可靠性
-隔离保护：通道间耐压>500 Vrms，适应高噪声环境；
-宽温工作范围：-40°C至85°C（符合MIL-STD-810G标准）。
软件生态兼容性
-支持NI-DAQmx驱动及LabVIEW、TestStand开发平台；
-提供Python/C++API接口，适配工业物联网（IIoT）应用。
.Product Positioning and Functions
The NI 3840 series is supposed to be a modular data acquisition(DAQ)device,which may be an extension module of the CompactDAQ or PXIe platform,and is designed for high-density signal acquisition,industrial control and distributed testing systems.Its core functions may cover multi-channel analog input/output,digital I/O and counter functions,supporting real-time data interaction in complex industrial environments.
Core parameter estimation
Analog input(AI)
-Channel configuration:16-channel differential input(equivalent 32 single-ended channel);
-Resolution and sampling rate:24-bit resolution,single-channel maximum sampling rate of 200 kS/s,supports multi-channel synchronization;
-Input range:±0.1 V to±10 V programmable gain adjustment.
Analog output(AO)
-Number of channels:4 independent outputs;
-Resolution and update rate:16 bits,up to 100 kS/s.
Digital I/O(DIO)
-Number of channels:32-bit bidirectional port;
-Level compatibility:3.3 V/5 V TTL compatible.
Counter/Timer
-Quantity and functions:4 32-bit counters,supporting encoder interface,PWM generation and frequency measurement.
Technical Features
High integration and scalability
-Single module integrates AI,AO,DIO and counter functions,suitable for compact chassis deployment;
-Supports multi-module synchronization through EtherCAT or PXI backplane.
Industrial-grade reliability
-Isolation protection:The voltage between channels is>500 Vrms,adapting to high noise environments;
-Wide temperature operating range:-40°C to 85°C(compliant with MIL-STD-810G standard).
Software Ecocompatibility
-Supports NI-DAQmx driver and LabVIEW and TestStand development platforms;
-Provides Python/C++API interface to adapt to industrial Internet of Things(IIoT)applications.
