描述
一、核心特性
高速光纤通信
带宽：支持40 Gbps全双工数据传输（每方向20 Gbps），满足大规模数据实时传输需求。
延迟：典型往返延迟<1μs，确保远程控制响应速度接近本地操作。
距离：支持最长300米多模光纤连接（OM4光纤），或10公里单模光纤连接（OS2光纤）。
无缝PXI Express集成
兼容性：完全兼容PXI Express标准，支持与NI PXIe-1085、PXIe-1082等机箱无缝连接。
触发同步：通过光纤链路传输PXI触发信号，实现远程机箱与主控制器纳秒级同步（<10 ns抖动）。
时钟同步：支持IEEE 1588时间同步协议，确保多机箱时间一致性（精度<100 ns）。
灵活的系统扩展
级联能力：支持多级级联（如主控制器→PXIe-8370→另一PXIe-8370），构建分布式测试网络。
混合拓扑：支持星型、链型或树型拓扑，适应不同测试场景需求。
热插拔：支持机箱运行时插拔，简化系统维护与升级。
高可靠性设计
冗余电源：支持双电源输入，提高系统可用性。
工业级温度范围：工作温度0°C至55°C，存储温度-40°C至70°C，适应恶劣环境。
ESD保护：符合IEC 61000-4-2标准，防止静电损坏。
二、技术规格
参数规格
接口类型1×QSFP+光纤接口（支持40 Gbps全双工）
光纤类型多模光纤（OM4，最长300米）
单模光纤（OS2，最长10公里）
带宽每方向20 Gbps（全双工40 Gbps）
延迟往返延迟<1μs（典型值）
触发同步PXI触发总线通过光纤传输，抖动<10 ns
时钟同步支持IEEE 1588 PTP，精度<100 ns
电源需求12 V DC，功耗<15 W
尺寸PXI Express模块尺寸（3U，单槽）
重量约200 g
三、应用场景
分布式自动化测试
汽车电子测试：在整车环境下远程控制多个PXI Express机箱，同步采集ECU信号、传感器数据与摄像头视频流。
航空航天测试：在风洞或飞行试验中，通过光纤连接远程测试设备，避免电磁干扰与信号衰减。
半导体测试：在洁净室内远程控制探针台与测试仪器，减少人员干预，提高测试一致性。
大规模数据采集
结构健康监测：在桥梁、建筑等大型结构中部署多个PXI Express机箱，通过光纤汇总振动、应变等传感器数据至中央服务器。
能源监测：在风电场或光伏电站中，远程采集逆变器、发电机等设备的电气参数，实现实时监控与故障诊断。
科研与国防
雷达与电子战：在野外测试场中，通过光纤连接远程雷达前端与控制中心，实现高带宽信号传输与实时分析。
量子计算：在低温实验室中，远程控制稀释制冷机内的量子比特控制模块，避免热噪声干扰。
四、软件支持
NI-DAQmx：支持通过光纤链路远程配置与控制数据采集卡（如NI PXIe-6368）。
NI TestStand：构建分布式测试序列，协调多个远程机箱的执行流程。
NI LabVIEW：通过TCP/IP或NI-XNET协议与PXIe-8370通信，开发自定义远程控制应用。
NI System Configuration API：动态发现与管理远程PXI Express系统资源。
五、典型配置示例
基础远程测试系统
主控制器：NI PXIe-8880（Intel Xeon八核控制器）
远程机箱：NI PXIe-1085（18槽PXI Express机箱）
连接模块：主控制器侧安装NI PXIe-8370，远程机箱侧安装NI PXIe-8370
光纤：OM4多模光纤（100米）
应用：汽车ECU硬件在环（HIL）测试。
1.Core Features
High-speed fiber-optic communication
Bandwidth:supports 40 Gbps full-duplex data transmission(20 Gbps in each direction),meeting the needs of large-scale real-time data transmission.
Latency:Typical round-trip delay<1μs,ensuring that remote control response speed is close to local operation.
Distance:Supports up to 300 meters of multimode fiber connection(OM4 fiber),or 10 kilometers of single-mode fiber connection(OS2 fiber).
Seamless PXI Express integration
Compatibility:Fully compatible with the PXI Express standard,supporting seamless connection with chassis such as NI PXIe-1085 and PXIe-1082.
Trigger synchronization:Transmit PXI trigger signals through fiber optic links to achieve nanosecond synchronization between remote chassis and main controller(<10 ns jitter).
Clock synchronization:Supports IEEE 1588 time synchronization protocol to ensure multi-chassis time consistency(accuracy<100 ns).
Flexible system expansion
Cascading capability:supports multi-level cascading(such as main controller→PXIe-8370→another PXIe-8370)to build a distributed test network.
Hybrid topology:supports star,chain or tree topologies to meet the needs of different test scenarios.
Hot plug:supports plugging and unplugging during chassis operation to simplify system maintenance and upgrades.
High reliability design
Redundant power supply:supports dual power input to improve system availability.
Industrial temperature range:operating temperature 0°C to 55°C,storage temperature-40°C to 70°C,adapt to harsh environments.
ESD protection:complies with IEC 61000-4-2 standard to prevent electrostatic damage.
2.Technical specifications
Parameter Specifications
Interface type 1×QSFP+fiber interface(supports 40 Gbps full-duplex)
Fiber type Multimode fiber(OM4,up to 300 meters)
Single-mode fiber(OS2,up to 10 kilometers)
Bandwidth 20 Gbps per direction(full-duplex 40 Gbps)
Delay Round-trip delay<1μs(typical value)
Trigger synchronization PXI trigger bus transmitted via optical fiber,jitter<10 ns
Clock synchronization Supports IEEE 1588 PTP,accuracy<100 ns
Power requirement 12 V DC,power consumption<15 W
Dimensions PXI Express module size(3U,single slot)
Weight About 200 g
3.Application scenarios
Distributed automated testing
Automotive electronics testing:Remotely control multiple PXI Express chassis in a vehicle environment to synchronously collect ECU signals,sensor data,and camera video streams.
Aerospace testing:In wind tunnels or flight tests,remote test equipment is connected via optical fiber to avoid electromagnetic interference and signal attenuation.
Semiconductor testing:Remotely control probe stations and test instruments in clean rooms to reduce human intervention and improve test consistency.
Large-scale data acquisition
Structural health monitoring:Deploy multiple PXI Express chassis in large structures such as bridges and buildings,and aggregate sensor data such as vibration and strain to a central server via optical fiber.
Energy monitoring:In wind farms or photovoltaic power plants,remotely collect electrical parameters of equipment such as inverters and generators to achieve real-time monitoring and fault diagnosis.
Scientific research and defense
Radar and electronic warfare:In field test sites,remote radar front ends are connected to control centers via optical fiber to achieve high-bandwidth signal transmission and real-time analysis.
Quantum computing:In cryogenic laboratories,remotely control the quantum bit control module in the dilution refrigerator to avoid thermal noise interference.
IV.Software support
NI-DAQmx:Supports remote configuration and control of data acquisition cards(such as NI PXIe-6368)via optical fiber links.
NI TestStand:Build distributed test sequences and coordinate the execution flow of multiple remote chassis.
NI LabVIEW:Communicate with PXIe-8370 through TCP/IP or NI-XNET protocol to develop custom remote control applications.
NI System Configuration API:Dynamically discover and manage remote PXI Express system resources.
V.Typical Configuration Example
Basic Remote Test System
Main Controller:NI PXIe-8880(Intel Xeon 8-core controller)
Remote Chassis:NI PXIe-1085(18-slot PXI Express Chassis)
Connection Module:NI PXIe-8370 installed on the main controller side and NI PXIe-8370 installed on the remote chassis side
Fiber:OM4 multimode fiber(100 meters)
Application:Automotive ECU hardware-in-the-loop(HIL)testing.
