PXI-7854R多功能数据采集卡是一款高性能的数据采集设备，通常用于需要高精度、高速度和灵活性的数据采集和控制应用。以下是对该数据采集卡的详细介绍：

基本信息

• 品牌：美国国家仪器有限公司（National Instruments，简称NI）
• 型号：PXI-7854R
• 类型：多功能数据采集卡

技术规格

1. FPGA（现场可编程门阵列）：
• 搭载Virtex-5 LX110 FPGA，提供用户可编程的FPGA，用于高性能板载处理和直接控制I/O信号，确保系统定时和同步的完全灵活性。
• 用户可以使用LabVIEW FPGA模块自定义这些设备，开发需要精确定时和控制的应用，如硬件在环测试、自定义协议通信、传感器仿真和高速控制。
2. 模拟输入（AI）：
• 通道数：8路（可能因具体型号或配置有所不同）
• 采样率：高达750 kS/s（每秒千次采样）
• 每通道具有专用模数转换器（ADC），用于独立的定时和触发。
3. 模拟输出（AO）：
• 通道数：8路（可能因具体型号或配置有所不同）
• 提供模拟输出功能，支持多种波形和信号输出。
4. 数字I/O（DIO）：
• 通道数：96路（可能因具体型号或配置有所不同）
• 提供丰富的数字I/O端口，用于数字信号的输入和输出。
5. 定时计数器：
• 配备定时计数器功能，支持多种门控方式和定时任务。

功能特点

1. 高性能：结合FPGA和高速ADC/DAC，提供卓越的数据采集和处理性能。
2. 灵活性：用户可编程的FPGA允许用户根据具体需求定制设备功能，满足多样化的应用需求。
3. 高精度：高精度的ADC和DAC确保数据采集和输出的准确性。
4. 易用性：随附的NI-DAQmx驱动程序和配置实用程序简化了配置和测量过程，降低了用户的学习成本。

应用领域

PXI-7854R多功能数据采集卡广泛应用于以下领域：

• 工业自动化：用于生产线上的数据采集和监控。
• 科研实验：在物理、化学、生物等学科的实验中采集数据。
• 测试与测量：在电子设备测试、通信设备测试等领域中，提供精确的数据采集和分析。
• 硬件在环测试：模拟实际工作环境，对控制系统进行测试和验证。

The PXI-7854R multifunctional data acquisition card is a high-performance data acquisition device typically used for data acquisition and control applications that require high precision, speed, and flexibility. The following is a detailed introduction to the data acquisition card:

essential information

Brand: National Instruments, Inc. (NI)

Model: PXI-7854R

Type: Multi functional data acquisition card

technical specifications

FPGA (Field Programmable Gate Array):

Equipped with Virtex-5 LX110 FPGA, it provides user programmable FPGA for high-performance onboard processing and direct control of I/O signals, ensuring complete flexibility in system timing and synchronization.

Users can use LabVIEW FPGA modules to customize these devices and develop applications that require precise timing and control, such as hardware in the loop testing, custom protocol communication, sensor simulation, and high-speed control.

Analog Input (AI):

Number of channels: 8 (may vary depending on specific model or configuration)

Sampling rate: up to 750 kS/s (thousands of samples per second)

Each channel has a dedicated analog-to-digital converter (ADC) for independent timing and triggering.

Analog output (AO):

Number of channels: 8 (may vary depending on specific model or configuration)

Provide analog output function, supporting multiple waveforms and signal outputs.

Digital I/O (DIO):

Number of channels: 96 (may vary depending on specific model or configuration)

Provide a variety of digital I/O ports for the input and output of digital signals.

Timer counter:

Equipped with a timer counter function, supporting multiple door control methods and timed tasks.

Functional Features

High performance: Combining FPGA and high-speed ADC/DAC, providing excellent data acquisition and processing performance.

Flexibility: User programmable FPGA allows users to customize device functions according to specific needs, meeting diverse application requirements.

High precision: High precision ADCs and DACs ensure the accuracy of data acquisition and output.

Usability: The accompanying NI DAQmx driver and configuration utility simplify the configuration and measurement process, reducing users' learning costs.

application area 

The PXI-7854R multifunctional data acquisition card is widely used in the following fields:

Industrial automation: used for data collection and monitoring on production lines.

Research experiment: Collecting data in experiments of physics, chemistry, biology, and other disciplines.

Testing and Measurement: Provide accurate data collection and analysis in fields such as electronic device testing and communication device testing.

Hardware in the loop testing: Simulate the actual working environment to test and verify the control system.

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