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        Bridging design and physical testing to evaluate drop, impact, shock, and vibration compliance before hardware exists.

        了解更多
        A guided engineering validation environment for mechanical engineering teams
      • Oscilloscopes right arrow Sampling Oscilloscopes right arrow Digital Multimeters right arrow BERTS, Digitizers, and DAQs right arrow Digital Protocol Analyzers right arrow Waveform and Function Generators right arrow
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        AC Power Supplies right arrow DC Power Supplies right arrow DC Electronic Loads right arrow Power Analyzers right arrow Source Measure Units right arrow
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        Buy an Expert Oscilloscope, Boost Your Bandwidth

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        Take On Complex MIMO Signals

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        Vision 400 Network Packet Broker
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      Analyze Complex RF Signals Faster

      Explore dual-channel and ultra-wideband signal analysis for demanding RF workflows.

      Explore Now
      XA5 & Xa6 Signal Analyzers
      Digital Validation. Faster.

      Get faster, clearer insights with our new multicore, 12-bit oscilloscope up to 33 GHz. Trade in your old oscilloscope and get credit toward a new XR8.

      了解更多
      Keysight XR8 Oscilloscope
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    • W2308EP 通道仿真器组件 [已淘汰]

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    W2308EP 通道仿真器组件

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    HIGHLIGHTS

    通道仿真器元件包括 :

    • 拥有逐比特模式和统计模式的通道仿真器,可支持工业标准输入/输出缓冲区信息规范(IBIS)中的算法建模接口(AMI)流程
    • 眼图探头组件可进行眼图分析,包括 BER 轮廓和浴缸曲线(bathtub)显示。还包括眼图模板实用工具,可执行自动模板违规检查
    • 均衡器支持自动抽头优化
    • 能够检查多个处于不同数据速率的入侵者的串扰
    • 正确处理抖动幅度

    当今几乎所有的消费类和企业数字产品――从笔记本电脑到数据中心服务器、电信交换中心和互联网路由器,均包含芯片间数据链路。

    SPICE 使设计人员能够使用集总元件模型来仿真较低速度的设计。但是,随着芯片间数据速率提升至每秒几千兆比特,高频和分布式效应越来越不容忽视,例如阻抗失配、反射、串扰、趋肤效应和电介质损耗等。

    因此,信号完整性工程师除了使用 SPICE 之外,还需要使用其他工具。
    Eye mask图 1. 通道仿真器,统计模式

    信号完整性(SI)工程师需要在设计空间中为数千个点确定超低比特误码率(BER)轮廓,确定发射机、通道和接收机的最佳特征组合。即便使用多核和现代化线性代数方法,瞬态仿真仍需耗费大量时间:一百万比特就需要一天以上的时间。

    为了满足这一需求,通道仿真器提供了两个新模式,以避免耗时的瞬态仿真。通过充分利用通道走线、过孔、焊线、连接器等器件的线性时不变(“LTI”)特性,您将无需在每次时间步进时运行瞬态求解程序这种粗略的近似方法,而是可以在几秒钟而不是在几天内确定超低比特误码率轮廓,快速、全面地探索可能的设计。

    下表对比了在逐比特模式和统计模式下使用传统瞬态方法和通道仿真器的优缺点。

      瞬态(如 SPICE)仿真器 通道仿真器,逐比特模式 通道仿真器,统计模式
    方法 改进的基尔霍夫电流定律节点分析(每次时间步进) 步进响应逐比特叠加 基于步进响应的统计计算
    应用 线性和非线性通道
    有限、用户指定的比特码型
    自适应或固定均衡器抽头
    LTI 通道
    有限、用户指定的比特码型
    自适应或固定均衡器抽头
    IBIS AMI
    LTI 通道
    随机无限比特码型
    固定均衡器抽头
    IBIS AMI(如果模型提供 GetWave 函数,可使用线性近似值)
    一分钟仿真中的 BER 本底 ~10-3 ~10-6 ~10-16
    典型兆位仿真时间 25 小时 12 分钟 40 秒

    支持的 IBIS 关键字表格(需要登录 myKeysight)

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