日韩欧洲精品无码AV,99国产午夜精品一区二区天美,精品久久免费一区二区三区四区,久久综合图区亚洲综合图区,久久久久亚洲AV免费观看,精子网久久国产精品,亚洲AⅤ无码一区二区二三区性色,亚洲精品国产电影,亚洲资源在线观看,婷婷五月丁香在线

  • 
    
  • <ul id="yy6ca"></ul>
  • <del id="yy6ca"></del>
    <ul id="yy6ca"></ul>
    <strike id="yy6ca"><menu id="yy6ca"></menu></strike>
    Hotline:400-880-1556

    English




    TWS headset CE certification test items

    Author:中認聯(lián)科 time:2020-08-21 Ctr:1590

    What is TWS headset

    TWS is the abbreviation of True Wireless Stereo in English, which means true wireless stereo. TWS technology is also based on the development of Bluetooth chip technology. According to its working principle, it means that the mobile phone connects to the main earphone, and then the main earphone quickly connects to the secondary earphone wirelessly, so as to realize the wireless separation of the left and right channels of Bluetooth. When the slave speaker is not connected, the main speaker returns to mono sound quality. TWS technology has been applied to the field of bluetooth headsets, so a new product-TWS bluetooth headset was born.

     image.png

    TWS headset CE certification test items

    1. The CE testing standards and items required for TWS headsets include EMC testing, RF testing, SAR evaluation, and LVD testing.

    2. EMC tests whether the headset conforms to the CE directive on electromagnetic compatibility standards;

    3. The RF test is aimed at the test of radio communication products. Since the wireless headset uses wireless Bluetooth technology, it must meet the requirements of CE-RF;

    4. SAR is the electromagnetic wave absorption ratio, which is aimed at the safety and health protection requirements of electronic and electrical products;

    5. LVD test is a low voltage directive to ensure that the equipment is safe to use under low voltage conditions. The part with a charging box also needs to meet the requirements of the LVD directive.

    TWS Bluetooth headset CE certification process

    1. Fill in the CE application form

    2. Provide information and samples (engineering prototype and normal prototype)

    3. Pass the laboratory test

    4. Issuing a certificate in compliance with CE standards

    Information required for TWS headset application certification

    1. English manual

    2. BOM table

    3. Product block diagram

    4. Circuit schematic

    5. Operation description of circuit principle

    For more information about the CE certification of TWS headsets, please call ZRLK for detailed inquiries. Professional engineers will answer you online. If you provide us with product pictures and specifications, we will give us the corresponding cycle, quotation and specific plan according to your product. Welcome to inquire.

    image.png


    Related Articles
    • How do smart desk lamps pass CE certification? ZRLK is your escort

    • Sodium battery UN38.3 certification: a key link to ensure product safety and compliance

    • CCC certification points of large capacity charging box: battery, headphones can not be less

    • CCC certification of the earphone charging case: The rated capacity of the battery cell is less than 600mAh.

    Follow Us
    欧美成人午夜免费全部完| 97在线视频人妻无码| 久久精品天天中文字幕人妻| 一本大道久久香蕉成人网| 成熟丰满熟妇高潮xxxxx| 国产成人精品一区二区三区免费| 中文字幕人成乱码在线观看| 中文字幕一区二区三区久久网站| 国产内射爽爽大片| 99热这里有精品| 国产小呦泬泬99精品| 日韩欧洲精品无码AV| 高潮尖叫无码| 中文幕无线码中文字夫妻| 在线看免费无码AV天堂| 亚洲熟妇av一区二区三区| 北条麻妃一区二区三区av高清| 又粗又黄又猛又爽大片免费| 国产真人无码作爱免费视频APP| 久久久久波多野结衣高潮| 久久久久亚洲av无码专区喷水| 亚洲天堂无码在线观看| 欧美国产激情二区三区| 91在线超碰| 中文字幕日本六区小电影| 亚洲av日韩av无码av| 日产精品一区二区| 精品无码中文视频在线观看| 国产精品三级在线观看无码| 欧美mv日韩mv国产网站| 日本乱人伦片中文三区| 国产av人人夜夜澡人人爽麻豆| 中文字幕无码一区二区免费| 亚洲最大无码中文字幕| 99热免费| 99视频这里只有精品6| 国产黄色免费观看| 日本无乱码高清在线观看| 国产成人精品一区二三区在线观看| 91九色在线视频| 真人无码国产作爱免费视频|