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智能仪器可测试性设计 PowerPoint PPT Presentation


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智能仪器可测试性设计. 主要内容. 可测试性概述 固有测试性设计 机内自测试技术 ---BIT 设计实例. 随着计算机技术的飞速发展和大规模集成电路的广泛应用,智能仪器在改善和提高自身性能的同时,也大大增加了系统的 复杂性 。这就给智能仪器的 测试 带来诸多问题,如测试时间长、故障诊断困难、使用维护费用高等,从而引起了人们的高度重视。自 20 世纪 80 年代以来,测试性和诊断技术在国外得到了迅速发展,研究人员开展了大量的系统测试和诊断问题的研究,测试性逐步形成了一门与可靠性、维修性并行发展的学科分支。.

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智能仪器可测试性设计

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4741297


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  • ---BIT


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  • 2080


4741297


4741297


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  • Testability

    (Controllability)

    (Observability)

    (Predictability)


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  • (Design For Testability DFT)


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  • 1

    2

    3

    4

  • 1/

    2


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  • BIT,BIT


4741297


4741297


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--BIT

  • BIT

  • BIT

  • BIT


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BIT

  • BIT

    ETEATEETEATEBITBIT


4741297

BIT

  • BIT

    1BIT

    2BIT


4741297

BIT

  • BIT

    BIT

    BIT


4741297

BIT

  • BIT

    ROMBIT

    BIT

    BIT


4741297

BIT

  • ROMBIT

    (onboardROM)

    BITROM

    CUT

    CUTGMR

    /(GO/

    NOGO)


4741297

BIT

  • BIT

    BIT

    CPU


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BIT

  • BIT

    RAMROMBIT

    BIT


4741297

BIT

  • (BILBO)2

    4

    (MISR)

    (PRPG)

    BILBO

    PRPGMISR , BILBO,


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BIT

  • BIT

    PCB

    ICPCB

    VLSI

    IEEE1990

    IEEE11491


4741297


4741297

BIT

  • BIT

    BIT

    BIT

    CUTCUT

    CUT

    CUT


4741297

BIT

  • BIT

    BIT

    BIT


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BIT

  • BIT


4741297

BIT

  • BIT

    BIT

    BIT

    BIT


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  • RAM


A d d a

A/D,D/A


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