标准摘要
[中文适用范围]： 过去，SCSI 标准仅规定了统一散装电缆（在早期标准中称为“介质”）的性能要求。 由于散装电缆仅提供 SCSI 总线段中的部分电气路径，因此如果仅考虑散装电缆，则包含该路径的互连的性能要求是不完整的。 本文档将覆盖范围扩展到完整的组装互连，包括连接器、均匀散装电缆和非均匀散装电缆。 描述了所有类型的无源互连的语法和框架。 其中包括执行电气测量的方法，以确定是否符合多种类型的散装电缆、各种组装互连和印刷电路板设计的性能要求。 详细规定了测量方法，以尽量减少不同电气测试实验室测量结果的差异。 详细信息包括校准、夹具和样品制备、设备、测量程序和数据输出格式。 [外文原描述]： ISO/EC 14776-121:2010(E) specifies the performance requirements of the interconnect and expands the coverage to the complete assembled interconnect including connectors, uniform bulk cable, and non-uniform bulk cable. A syntax and framework is described for all types of passive interconnect. The methodology for performing the electrical measurements required to determine compliance with the performance requirements for bulk cable of several types, various assembled interconnects and printed circuit board designs is included. Details of the measurement methodology are specified to minimize the difference in measured results from different electrical testing laboratories. Details include calibration, fixturing and sample preparation, equipment, measurement procedure and data output format.
英文名称Information technology - Small computer system interface (SCSI) - Part 121: Passive interconnect perfomance (PIP)