const searchPopup_search_default = document.getElementById('search-default-content');const searchInput_search_default = document.getElementById('search-default-input'); // 监听实例的弹窗显示状态变化 const observer_search_default = new MutationObserver(() => {// 当弹窗从隐藏变为显示时,执行当前实例的输入框聚焦 if (searchPopup_search_default.style.display !== 'none' && !searchPopup_search_default.hidden) {searchInput_search_default.focus(); // 核心聚焦方法 // 可选:聚焦后选中输入框内内容,方便直接替换(按需开启) // searchInput_.select(); observer_search_default.disconnect(); // 聚焦一次后断开,避免重复触发 }}); // 启动当前实例的监听,仅监听自身弹窗的属性变化,各实例完全独立 observer_search_default.observe(searchPopup_search_default, {attributes: true,attributeFilter: ['style', 'hidden', 'class'] // 仅监听关键属性,性能最优 });

EMC standard analysis

This catalog will show the Division I wrote the EMC electromagnetic compatibility related test standards specified test methods and standard analysis, our information only introduces the more focused standard introduction and test equipment equipment related issues, such as learning the standard, please check the original standard directly, the Division I wrote the article is for reference only, for the analysis of the standard we put forward the viewpoints and standards are inconsistent with the content of the standard, please contact yourselves! Standard publisher for more information.

The following study materials are currently categorized:

Total number of published study materials in current category: 35; Total number of materials in current page: 8.

CS101 25Hz - 150kHz Power Line Conductivity Sensitivity Test Introduction

CS101 25Hz - 150kHz Power Line Conductivity Sensitivity Test Introduction

CS101 is a test item of military EMC standard, which is mainly used to verify the immunity tolerance of EUT to carry coupled RF voltage signals to the input power line. This article provides CS101 limit lines, calibration methods, EUT...

IC EMC List of National Standards for Electromagnetic Compatibility of Integrated Circuits 2026 Update

IC EMC List of National Standards for Electromagnetic Compatibility of Integrated Circuits 2026 Update

China in 2025 issued GB/T 44937 sequence and GB/T 42968 sequence IC EMC integrated circuit EMC national standards list, covering EMI and EMS two parts of the standard content, in addition...

Conducted Emission Distinctions for Automotive, Industrial and Defense Applications - Part II - CE Limits and Test Setups

Conducted Emission Distinctions for Automotive, Industrial and Defense Applications - Part II - CE Limits and Test Setups

This article explains the differences between the CE limits and test setups of three industry standards, CISPR 25 for automotive electronics, CISPR 11 for industrial and MIL-STD-461 for defense applications, respectively.This is the second part of the article, which focuses on the...

Conducted Emission Distinctions for Automotive, Industrial and Defense Applications - Part I - EMC Test Standards and Test Methods

Conducted Emission Distinctions for Automotive, Industrial and Defense Applications - Part I - EMC Test Standards and Test Methods

This article is the first part of the Conducted Emission Differences for Automotive, Industrial and Defense Applications, where we have compiled and illustrated the three lines of automotive electronics CISPR 25, industrial CISPR 11 and defense applications MIL-STD-461 respectively...

GB/T 17799.2-2023 Analysis of test items and standards

GB/T 17799.2-2023 Analysis of test items and standards

GB/T 17799.2-2023 is an electromagnetic compatibility EMC test standard, and is applicable to the specification of EMC immunity test requirements for electronic products operating in industrial environments. Here is a detailed understanding of GB/T 1779...

An article on discontinuous disturbance as well as click

An article on discontinuous disturbance as well as click

This paper details the definitions and test methods for intermittent nuisance and clicking, clicking is a type of intermittent nuisance, and explains what counts as clicking, and what equipment does not need to be tested for clicking. Finally, it gives the measurement of clicking sound...

List of household electrical equipment requiring EMC testing

List of household electrical equipment requiring EMC testing

According to the test methods proposed in the standards CISPR14 .1 and GB4343.1, all household appliances or similar equipment should be tested for electromagnetic compatibility, regardless of whether the power supply is AC or DC (or battery) ...

IEC61000-4-6 and GBT17262.6 Conducted Immunity Test Methods for RF Field Induction Analysis

IEC61000-4-6 and GBT17262.6 Conducted Immunity Test Methods for RF Field Induction Analysis

This paper is prepared by EUTTEST to analyze and explain the conducted immunity test methods for RF field induction, corresponding to the test methods specified in IEC61000-4-6 and GBT17262.6 standards, EUTT...

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