{"id":2214,"date":"2013-11-01T00:00:53","date_gmt":"2013-10-31T15:00:53","guid":{"rendered":"https:\/\/micronix-jp.com\/?p=2214"},"modified":"2023-03-20T17:21:58","modified_gmt":"2023-03-20T08:21:58","slug":"rsa_led","status":"publish","type":"post","link":"https:\/\/micronix-jp.com\/english\/note\/application\/rsa_led.html","title":{"rendered":"Conducted emission noise measurement LED lamp with signal analyzer"},"content":{"rendered":"<p class=\"bigTitle\" style=\"margin-bottom: 1em\">The conducted emission noise of LED lamp is easily analyzable using a handheld real time signal analyzer.<\/p>\n\n\n<h2>Application<\/h2>\n<h3>Connection block diagram<\/h3>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/micronix-jp.com\/eng\/image\/application\/RSA_LED-00.jpg\" alt=\"Figure:Connection block diagram\" width=\"730\" height=\"277\"> \n\n\n<h2>Solution<\/h2>\n<ul>\n<li>Connect AC line of LED lamp to LISN and then connect LISN output to up-converter.<\/li>\n<li>Lower limit frequency of 20kHz of MSA538 will be improved to 9kHz by an up-converter. <\/li>\n<li>With a signal analyzer, the signal is analyzable in both frequency domain and time domain. <\/li>\n<\/ul>\n<ul class=\"flexBox flexBoxDivide\">\n<li class=\"borderBox\"> MAIN screen\uff1aspectrum, SUB screen\uff1aspectrogram Such signal as a burst can be observed in spectrogram and harmonics can be measured in spectrum. <br>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/micronix-jp.com\/eng\/image\/application\/RSA_LED-01.gif\" alt=\"Graph:\u9ad8\u5468\u6ce2\u6e2c\u5b9a\" width=\"400\" height=\"321\"> <\/li>\n<li class=\"borderBox\">MAIN screen\uff1apower vs time, SUB screen\uff1aspectrogram Behavior of more detailed time domain of burst signal in spectrogram can be observed.  As shown in following figure, 72ms width specified with marker is measured. <br>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/micronix-jp.com\/eng\/image\/application\/RSA_LED-02.gif\" alt=\"Graph:72ms\u306e\u30d1\u30eb\u30b9\u5e45\u3092\u30de\u30fc\u30ab\u306b\u3066\u6e2c\u5b9a\" width=\"412\" height=\"321\"> <\/li>\n<\/ul>\n\n\n\n<h2>System configuration<\/h2>\n<table>\n<tbody>\n<tr>\n<td><a href=\"\/english\/products\/spectrum-analyzer\/msa500\/msa538.html\">Spectrum Analyzer[MSA538]<\/a><\/td>\n<td nowrap=\"\" class=\"textRight\"> x 1<\/td>\n<\/tr>\n<tr>\n<td>LISN<\/td>\n<td nowrap=\"\" class=\"textRight\"> x 1<\/td>\n<\/tr>\n<tr>\n<td>Up-converter<\/td>\n<td nowrap=\"\" class=\"textRight\"> x 1<\/td>\n<\/tr>\n<\/tbody>\n<tfoot>\n<\/tfoot>\n<\/table>\n\n\n\n<h2>Products introduction<\/h2>\n<div class=\"woocommerce \"><ul class=\"products columns-4\">\n<li class=\"product type-product post-5782 status-publish first instock product_cat-shop-category-msa500 product_cat-shop-category-handheld-spectrum-analyzer product_tag-tag-handheld-spectrum-analyzer has-post-thumbnail shipping-taxable product-type-simple\">\n\t<a href=\"https:\/\/micronix-jp.com\/english\/products\/spectrum-analyzer\/msa500\/msa538.html\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620-300x300.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\" srcset=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620-300x300.png 300w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620-150x150.png 150w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620-600x600.png 600w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620-100x100.png 100w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620.png 620w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">Handheld Signal Analyzer MSA538<\/h2>\n<\/a><\/li>\n<\/ul>\n<\/div><div class=\"wp-block-vk-blocks-button vk_button vk_button-color-custom vk_button-align-block\"><a href=\"\/eng\/file-download\/application\/pdf\/conducted_LED.pdf\" style=\"background-color:#5b6069;border:1px solid #5b6069;color:#fff;\" class=\"vk_button_link btn btn-md btn-block white\" role=\"button\" aria-pressed=\"true\" target=\"_blank\"  rel=\"noopener\"><i class=\"fas vk_button_link_before fa-file-pdf\"><\/i><span class=\"vk_button_link_txt\">Download This Application Note (PDF) <\/span><\/a><\/div><p><\/p><div class=\"wp-block-cover is-light vk_block-margin-xl--margin-top\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-white-background-color has-background-dim\"><\/span><img class=\"wp-block-cover__image-background wp-image-8105\" alt=\"\" src=\"https:\/\/micronix-jp.com\/wp-content\/uploads\/2022\/11\/contact_cta_cover.png\" data-object-fit=\"cover\"\/><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\"><p class=\"has-text-align-center has-huge-font-size\"><strong>Please feel free to contact us.<\/strong><\/p>\n\n<p>If you want to verify 5G, customize a radio wave shield box, or need product repair, please do not hesitate to contact us about any small matter.<\/p>\n\n<div class=\"wp-block-vk-blocks-grid-column vk_gridColumn\"><div class=\"row\"><div class=\"wp-block-vk-blocks-grid-column-item vk_gridColumn_item col-12 col-sm-12 col-md-12 col-lg-12 col-xl-12 col-xxl-12\"><div class=\"wp-block-vk-blocks-button vk_button vk_button-color-custom vk_button-align-block is-style-shine\"><a href=\"https:\/\/micronix-jp.com\/english\/contact\/\" class=\"vk_button_link btn has-background has-luminous-vivid-orange-background-color btn-lg btn-block\" role=\"button\" aria-pressed=\"true\" target=\"_blank\" rel=\"noopener\"><div class=\"vk_button_link_caption\"><i class=\"far fa-envelope vk_button_link_before\" aria-hidden=\"true\"><\/i><span class=\"vk_button_link_txt\"><strong>Contact Form<\/strong><\/span><\/div><\/a><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>The conducted emission noise of LED lamp is easily analyzable using a handheld real time signal analyzer. Application Connection block diagram Solution Connect AC line of LED lamp to LISN [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8242,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"vkexunit_cta_each_option":"","footnotes":""},"categories":[17],"tags":[44,48,66,71,75],"class_list":["post-2214","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-category-note","tag-app-emc","tag-app-led","tag-market-emc","tag-application-emc","tag-application-spectrum-analyzer"],"_links":{"self":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/2214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/comments?post=2214"}],"version-history":[{"count":1,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/2214\/revisions"}],"predecessor-version":[{"id":7050,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/2214\/revisions\/7050"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/media\/8242"}],"wp:attachment":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/media?parent=2214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/categories?post=2214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/tags?post=2214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}