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Standards Interpretation

Standard clauses translated into engineering language: how to read the limits, how to choose test conditions, how to prepare samples, and where the common misunderstandings are. Every article comes from a real project.

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Standards Interpretation 2026-11-08 Combined temperature/humidity cycling: cyclic damp heat passed, so why did the door part still crack in the cold? 温湿组合循环和交变湿热，企业常当成一回事，但密封件在环境可靠… 阅读全文

汽车电子EMC整改：辐射抗扰甲实验室全过、复测就崩，先查 ISO 11452-1 布置

Standards Interpretation 2026-11-08 Automotive EMC remediation: radiated immunity passed in one lab and failed on retest - check ISO 11452-1 setup first. **辐射抗扰复测最冤的一种崩法，不是板子不行，是布置变了。I… 阅读全文

Standards Interpretation 2026-11-07 All my interior trim parts passed odour testing. Why do they still fail the OEM's odour review once fitted in the vehicle? 零件级 VOC 与气味单项合格，并不等于整车气味评审能过关—… 阅读全文

我的汽车电子零件 CISPR 25 和 ISO 11452 都过了，为什么装到整车上还是过不了主机厂的 EMC 验收？

Standards Interpretation 2026-11-05 My automotive component passed CISPR 25 and ISO 11452. Why does it still fail the OEM's EMC acceptance once installed? 零部件级 EMC 摸底和整车级验收是两件事：过了法规底限，不… 阅读全文

我的 IEC 60068 环境试验顺序如果排错了，会不会反而把产品隐患给测没了？

Standards Interpretation 2026-11-04 If I get the IEC 60068 environmental test sequence wrong, could it hide real product weaknesses? 顺序排错可能让真正的失效模式被提前掩盖，反而给出一份看起来很… 阅读全文

汽车电子EMC整改：ISO 11452-11 混响室辐射抗扰，整机才测、不定位故障点

Standards Interpretation 2026-11-01 Automotive EMC remediation: ISO 11452-11 reverberation chamber tests the whole unit and does not localise the fault. **混响室（ISO 11452-11）辐射抗扰不是&quot… 阅读全文

Standards Interpretation 2026-11-01 Why do long-glass-fibre PP trim parts warp at high temperature? Judging creep and post-ageing impact. 同一块长玻纤增强PP（LGF-PP）门内饰板骨架，出模时平面… 阅读全文

Standards Interpretation 2026-11-01 On-board charger (OBC) testing: how to sequence EMC, climatic and supply transient test lines. 车载充电机（OBC）是车上少数同时踩在高压母线和低压电源两端… 阅读全文

Standards Interpretation 2026-10-31 How is appearance ageing of paint-free automotive trim tested? Judging flow marks, weld lines and loss of metallic gloss. 免喷涂饰件看似省了一道喷漆工序，却把外观风险从漆膜挪到了材料… 阅读全文

Standards Interpretation 2026-10-31 High-voltage connector testing for automotive electronics: sequencing connector test items. 高压连接器失效，九成不是被电流烧的，是被振动、盐雾和温度冲击… 阅读全文

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