IEC 61124:2023给出了多个优化的测试方案、相应的边界线和特性。此外，还给出了使用电子表格程序设计测试计划的算法，以及如何选择测试计划的指导。 本文件规定了测试观察值是否 故障率， 失效强度， 平均故障运行时间（MTTF）， 平均无故障运行时间（MTBF）， 符合给定的要求。 除非另有说明，否则假设在累积测试时间期间，失效时间或失效之间的操作时间是独立的且相同的指数分布。该假设意味着假定故障率或破坏强度是恒定的。

IEC 61124:2023 gives a number of optimized test plans, the corresponding border lines and characteristics. In addition, the algorithms for designing test plans using a spreadsheet program are also given, together with guidance on how to choose test plans.
This document specifies procedures to test whether an observed value of

• failure rate,
• failure intensity,
• mean operating time to failure (MTTF),
• mean operating time between failures (MTBF),

conforms to a given requirement.
It is assumed, except where otherwise stated, that during the accumulated test time, the times to failure or the operating times between failures are independent and identically exponentially distributed. This assumption implies that the failure rate or failure intensity is assumed to be constant.