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特点

  • 针对 PAM4 模块和元器件的 FEC 感知物理层测试
  • 提供一个极限测试通道，无需向其他通道施加极限条件即可测量使用 FEC 的 400G 以太网链路的丢帧率
  • 符合 400GAUI-8 和 400GBASE-LR8/-FR8/-SR8 接口的 IEEE 测试规范
  • 在 PRBS 或 FEC（KP4）模式下支持 26.5625 Gbaud 波特率
  • 功能强大的分析工具

加快新一代 400G 器件在数据中心的部署

Keysight N4891A 是一款适用于 400G 的前向纠错（FEC）感知型一致性测试解决方案，兼具灵活性与完整性。它填补了 400G 类别光收发信机模块和相关主机 ASIC 测试中的一处关键空白，可在第一层一致性测试期间监测 FEC 性能。

该解决方案能够让您深入了解 FEC 要求对元器件和系统设计权衡的影响，使您能够预测实际条件下的系统裕量。

N4891A 解决方案结合了 M8040A 64 Gbaud 高性能 BERT，以便在单个被测通道上生成正确条带化的 FEC 测试码型，同时还采用了 A400GE-QDD 400GE 第 1 层 BERT 和 KP4 FEC 多端口测试系统，以便在其他七个通道上提供正确对齐的条带化 FEC 流量，这七个通道可用于测量被测接口在极限条件下的 FLR。

400GABASE FEC 感知型解决方案与是德科技一致性测试解决方案（如光接收机极限测试和 IEEE 802.3bs 接收机预兼容性测试应用软件）相结合，可提供快速、准确、可重复的光电极限信号校准，从而进行互操作性测试。

400GBASE FEC 感知型接收机测试解决方案可用于以下应用：

  • 400G 系统和元器件的设计
  • 根据 IEEE 802.3bs/cd 标准进行的 400GE 互操作性测试

FEC 感知第 1 层测试的原理

FEC 码字统计页面——FEC 端口统计数据和高级测量结果（如预先 FEC BER、丢帧率）。

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N4891A 400GBASE FEC 感知型接收机测试解决方案

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关于 N4891A 400GBASE FEC 感知型接收机测试解决方案的特色资源

Data Sheets 2023.07.06

N4891A – 400GBASE FEC-aware Receiver Test

N4891A – 400GBASE FEC-aware Receiver Test

Keysight’s N4891A 400GABASE FEC-aware receiver test solution allows measurement of frame loss ratio in 400G Ethernet links using FEC by supplying one stressed lane, while maintaining the proper FEC striped test pattern data across all lanes. This solution provides unique insights to understand how component and system design tradeoffs are affected by Forward Error Correction (FEC) requirements and to predict the system margin under real conditions.

2023.07.06

User Manuals 2017.12.01

M8091BSPA IEEE 802.3bs Pre-Compliance Rx Test Automation Application User Guide

M8091BSPA IEEE 802.3bs Pre-Compliance Rx Test Automation Application User Guide

M8091BSPA IEEE 802.3bs Pre-Compliance Rx Test Automation Application User Guide

2017.12.01

Data Sheets 2023.12.08

M8040A High-Performance BERT 64 Gbaud Version 10.5

M8040A High-Performance BERT 64 Gbaud Version 10.5

Datasheet updates for M8040A with new features from M8070B V7.0; Integration of M8194A AWG. Realtime SER per Threshold. SKPOS filtering PCIe 2.5 Gb/s. ALIGN filtering SATA 3G, SAS 3G (8b/10b based). PAM3 algorithmic patterns PRTS19.

2023.12.08

User Manuals 2019.12.01

M809256PB OIF CEI-56G Pre-Compliance Rx Test Automation Application User Guide

M809256PB OIF CEI-56G Pre-Compliance Rx Test Automation Application User Guide

The Keysight M809256PB OIF CEI-56G Rx Test Automation Application provides a framework for using Keysight M8000 BERT Test Solutions along with the Keysight FlexDCA Oscilloscopes. This version of the software extends support to the CEI-56G-MR-PAM4 and CEI-56G-LR-PAM4 standards, other than the CEI-56G-VSR-PAM4 standard. The Methods of Implementation document describes the procedures to perform calibrations and tests on the CEI-56G VSR, MR and LR DUTs.

2019.12.01

Data Sheets 2018.09.04

M809256PA OIF-CEI CEI-56G Pre-Compliance Receiver Test Application

M809256PA OIF-CEI CEI-56G Pre-Compliance Receiver Test Application

The M809256PA receiver test application is designed to assist and simplify the stress signal calibration used for testing the inputs of OIF-CEI CEI-6G-VSR PAM4 capable hosts and modules. It reduces user interaction to a minimum and performs all required calibration routines and compliance testing automatically by remote controlling all required instruments.

2018.09.04

Data Sheets 2023.10.05

N4917BSCB Optical Receiver Stress Test Solution

N4917BSCB Optical Receiver Stress Test Solution

Complete optical receiver stress test solution for 400GbE optical transceivers with automated stress eye calibration and performance compliance testing.

2023.10.05

User Manuals 2023.11.08

Keysight N4917BSCB 400G Optical Receiver Test Application User Guide

Keysight N4917BSCB 400G Optical Receiver Test Application User Guide

Keysight N4917BSCB 400G Optical Receiver Test Application User Guide

2023.11.08

Data Sheets 2018.08.31

M8091BSPA IEEE 802 3bs Pre-Compliance Receiver Test Application

M8091BSPA IEEE 802 3bs Pre-Compliance Receiver Test Application

The M8091BSPA receiver test application is designed to assist and simplify the stress signal calibration used for testing the inputs of 200GAUI-4 and 400GAUI-8 PAM4 capable hosts and modules. It reduces user interaction to a minimum and performs all required calibration routines and compliance testing automatically by remote controlling all required instruments.

2018.08.31

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