{"id":20271,"date":"2026-10-28T14:36:03","date_gmt":"2026-10-28T06:36:03","guid":{"rendered":"https:\/\/www.wehopower.com\/news\/power-supply-system-rf-immunity-acceptance\/"},"modified":"2026-10-28T14:36:03","modified_gmt":"2026-10-28T06:36:03","slug":"power-supply-system-rf-immunity-acceptance","status":"publish","type":"news","link":"https:\/\/www.wehopower.com\/fa\/news\/power-supply-system-rf-immunity-acceptance\/","title":{"rendered":"RF Immunity for Powered Equipment: Define Conducted and Radiated Acceptance"},"content":{"rendered":"<div class=\"weho-geo-content weho-geo08\">\n<p class=\"lead\"><strong>A power supply EMC report does not by itself establish RF immunity of the equipment it powers.<\/strong> For conducted and radiated RF disturbances, match the report to the exact supply and tested arrangement, then define the complete equipment\u2019s ports, operating modes and required behavior. Release the assembly against an agreed equipment-level plan, including functions that can fail while the DC rail still appears normal.<\/p>\n<figure id=\"figure-product-hero\" class=\"product-hero\"><a class=\"hero-image-link\" href=\"https:\/\/www.wehopower.com\/fa\/product\/rsp-500-ac-to-dc-power-supply-with-pfc\/\" aria-label=\"View RSP-500-24 product details\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/product-scene.jpg\" width=\"1254\" height=\"1254\" alt=\"RF Immunity for Powered Equipment: Define Conducted and Radiated Acceptance  title=\" rf immunity for powered equipment: define conducted and radiated acceptance title =\"\"><\/a><figcaption>WEHO RSP-500-24 on a sample-preparation bench. Reused application illustration with an AI-assisted environment; it does not show an RF test or qualified equipment. <a href=\"https:\/\/www.wehopower.com\/fa\/product\/rsp-500-ac-to-dc-power-supply-with-pfc\/\">RSP-500-24 product details<\/a>. <a href=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/product-scene.jpg\">View full-size illustration<\/a>.<\/figcaption><\/figure>\n<p>This guide helps OEM and EMC teams turn a broad request for \u201cRF immunity\u201d into a reviewable acceptance record. It does not assign a test severity to every industrial product or claim that a pictured WEHO model has passed a particular RF test.<\/p>\n<nav class=\"toc\" aria-label=\"Table of contents\"><strong>In this guide<\/strong><\/p>\n<ol>\n<li><a href=\"#phenomenon\">Identify the disturbance and governing requirement<\/a><\/li>\n<li><a href=\"#scope\">Separate supplier evidence from equipment acceptance<\/a><\/li>\n<li><a href=\"#matrix\">Create a port and operating-mode matrix<\/a><\/li>\n<li><a href=\"#function\">Monitor the function that matters<\/a><\/li>\n<li><a href=\"#finding\">Record an RF finding without guessing its cause<\/a><\/li>\n<li><a href=\"#release\">Close the evidence gaps before release<\/a><\/li>\n<\/ol>\n<\/nav>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0641\u0647\u0631\u0633\u062a \u0645\u0637\u0627\u0644\u0628<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\u062a\u063a\u06cc\u06cc\u0631 \u0648\u0636\u0639\u06cc\u062a \u0641\u0647\u0631\u0633\u062a \u0645\u0637\u0627\u0644\u0628\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u062a\u063a\u06cc\u06cc\u0631 \u0648\u0636\u0639\u06cc\u062a \u062f\u0647\u06cc\u062f<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-system-rf-immunity-acceptance\/#Identify_the_disturbance_and_governing_requirement\" >Identify the disturbance and governing requirement<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-system-rf-immunity-acceptance\/#Separate_supplier_evidence_from_equipment_acceptance\" >Separate supplier evidence from equipment acceptance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-system-rf-immunity-acceptance\/#Create_a_port_and_operating-mode_matrix\" >Create a port and operating-mode matrix<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-system-rf-immunity-acceptance\/#Monitor_the_function_that_matters\" >Monitor the function that matters<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-system-rf-immunity-acceptance\/#Record_an_RF_finding_without_guessing_its_cause\" >Record an RF finding without guessing its cause<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-system-rf-immunity-acceptance\/#Close_the_evidence_gaps_before_release\" >Close the evidence gaps before release<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.wehopower.com\/fa\/news\/power-supply-system-rf-immunity-acceptance\/#Request_the_evidence_for_your_equipment_review\" >Request the evidence for your equipment review<\/a><\/li><\/ul><\/nav><\/div>\n<h2 id=\"phenomenon\"><span class=\"ez-toc-section\" id=\"Identify_the_disturbance_and_governing_requirement\"><\/span>Identify the disturbance and governing requirement<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Emissions describe disturbance leaving equipment; immunity concerns its response to an applied disturbance. A conducted-emissions Class A or Class B result is therefore a different item from an RF immunity result. Analog Devices\u2019 <a href=\"https:\/\/www.analog.com\/en\/resources\/technical-articles\/addressing-power-supply-systematic-failures-part-2.html\" target=\"_blank\" rel=\"noopener\">power-supply immunity overview<\/a> separates radiated RF, conducted RF, ESD, EFT and surge references. Keep those phenomena distinct in the purchasing specification.<\/p>\n<p><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/59849\" target=\"_blank\" rel=\"noopener\">IEC 61000-4-3:2020<\/a> provides a basic method for radiated RF field immunity. <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/65586\" target=\"_blank\" rel=\"noopener\">IEC 61000-4-6:2023<\/a> concerns conducted disturbances induced by RF fields. Their official summaries place applicability, appropriate levels and performance criteria with the relevant product committees. Identify the product standard, edition and market requirements governing the actual equipment before selecting a program with the laboratory.<\/p>\n<p>Write down the required frequency ranges, stress levels, modulation, exposure conditions and applicable ports. Do not copy another product\u2019s range or criterion simply because both use an AC\/DC supply. An EFT, ESD or surge pass addresses another disturbance method; the related <a href=\"https:\/\/www.wehopower.com\/fa\/news\/eft-test-power-supply-system-acceptance\/\">EFT planning guide<\/a> and <a href=\"https:\/\/www.wehopower.com\/fa\/news\/esd-testing-powered-equipment-validation\/\">ESD equipment-validation guide<\/a> should remain separate records.<\/p>\n<h2 id=\"scope\"><span class=\"ez-toc-section\" id=\"Separate_supplier_evidence_from_equipment_acceptance\"><\/span>Separate supplier evidence from equipment acceptance<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Ask for the complete supply report, including tested model, revision, loading, cables, enclosure, external filtering and observed performance. A statement such as \u201cIEC 61000-4-6\u201d without configuration and outcome cannot tell the integrator whether its application is covered.<\/p>\n<p>Freeze the proposed equipment separately: supply and controller revisions, firmware, cable lengths and shields, bonding, enclosure openings, external interfaces and connected peripherals. Compare that arrangement with the supplier\u2019s tested setup. Differences are review actions, not automatic failures or automatic approvals.<\/p>\n<figure id=\"figure-product-original\" class=\"product-detail\"><a class=\"detail-image-link\" href=\"https:\/\/www.wehopower.com\/fa\/product\/rsp-500-ac-to-dc-power-supply-with-pfc\/\" aria-label=\"View RSP-500-24 product details\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/product-original.jpg\" width=\"1000\" height=\"1000\" alt=\"RF Immunity for Powered Equipment: Define Conducted and Radiated Acceptance  title=\" rf immunity for powered equipment: define conducted and radiated acceptance title =\"\"><\/a><figcaption>WEHO RSP-500-24 original product photograph. Use the complete model and revision to request the relevant report; visible markings do not establish RF immunity. <a href=\"https:\/\/www.wehopower.com\/fa\/product\/rsp-500-ac-to-dc-power-supply-with-pfc\/\">RSP-500-24 product details<\/a>. <a href=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/product-original.jpg\">View original product photo<\/a>.<\/figcaption><\/figure>\n<p>The pictured RSP-500-24 provides a traceable hardware identity for this discussion. Request its applicable current documentation and report before assigning it an immunity capability. The photo, a logo or a generic family specification does not fill that evidence gap. For emissions-report review, use the separate <a href=\"https:\/\/www.wehopower.com\/fa\/news\/emc-class-a-vs-class-b-audit-the-conducted-emission-report-not-the-label\/\">conducted-emission evidence checklist<\/a>.<\/p>\n<figure id=\"figure-evidence\"><a href=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/technical-6.svg\" aria-label=\"Open full-size evidence diagram\"><picture><source media=\"(max-width:560px)\" srcset=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/technical-mobile-6.svg\" width=\"650\" height=\"1000\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/technical-6.svg\" width=\"1200\" height=\"545\" alt=\"RF Immunity for Powered Equipment: Define Conducted and Radiated Acceptance  title=\" rf immunity for powered equipment: define conducted and radiated acceptance title =\"\"><\/picture><\/a><figcaption>A supplier report contributes evidence to the equipment review. It does not replace the final configuration and functional acceptance record. Planning illustration only. <a href=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/technical-6.svg\">View full-size diagram<\/a>.<\/figcaption><\/figure>\n<h2 id=\"matrix\"><span class=\"ez-toc-section\" id=\"Create_a_port_and_operating-mode_matrix\"><\/span>Create a port and operating-mode matrix<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Organize the plan around the equipment\u2019s real interfaces. A mains lead, an external DC port and a communication cable can have different roles in the agreed method. Do not treat every internal rail as an externally exposed port, or presume a port is exempt without the applicable basis.<\/p>\n<p class=\"table-hint\">On small screens, scroll sideways to compare each test scope with its evidence.<\/p>\n<div class=\"table-scroll\" tabindex=\"0\" role=\"region\" aria-label=\"RF immunity planning matrix\">\n<table>\n<thead>\n<tr>\n<th>Scope<\/th>\n<th>Configuration and exposure to record<\/th>\n<th>Functional evidence to agree<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Conducted RF: supply interface<\/td>\n<td>Applicable port, coupling method, supply source, load state, cable arrangement and required RF program.<\/td>\n<td>Rail behavior and relevant equipment functions during exposure and recovery.<\/td>\n<\/tr>\n<tr>\n<td>Conducted RF: signal or control interface<\/td>\n<td>Actual connected peripheral, cable and shield arrangement, auxiliary equipment and monitoring connections.<\/td>\n<td>Data integrity, command execution and acceptable error or interruption limits.<\/td>\n<\/tr>\n<tr>\n<td>Radiated RF: equipment enclosure<\/td>\n<td>Equipment faces and orientations, cabling, enclosure state and operating modes required by the agreed method.<\/td>\n<td>Functions sensitive to exposure, including behavior that a front-panel indicator cannot reveal.<\/td>\n<\/tr>\n<tr>\n<td>Mode transitions<\/td>\n<td>Applicable acquisition, communication, standby or control transitions included in the test plan.<\/td>\n<td>State retention, permitted intervention and recovery requirements defined in advance.<\/td>\n<\/tr>\n<tr>\n<td>Repeat after a change<\/td>\n<td>Revised filter, cable, bonding, hardware or firmware, with the repeat scope justified by the responsible reviewers.<\/td>\n<td>Traceable comparison with the original finding and the remaining applicable tests.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>This is a proposed planning worksheet. The equipment\u2019s governing requirements and laboratory method determine its final entries; it is not a report of a completed test.<\/p>\n<h2 id=\"function\"><span class=\"ez-toc-section\" id=\"Monitor_the_function_that_matters\"><\/span>Monitor the function that matters<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Define observable success before exposure. Useful checks can include a measurement sequence counter, communication-error log, output-state readback and retained-configuration comparison. Choose indicators that correspond to the actual equipment task rather than adding measurements with no decision value.<\/p>\n<p>Specify whether a temporary deviation is allowed, how it will be detected, what recovery means and whether operator intervention is permitted. If a product standard supplies performance criteria, map the equipment functions to those criteria. Avoid inventing one universal tolerance or recovery interval for every power supply and load.<\/p>\n<p>A real <a href=\"https:\/\/ez.analog.com\/interface-isolation\/f\/q-a\/563113\/adm2463-conducted-immunity\" target=\"_blank\" rel=\"noopener\">ADI support question about conducted immunity<\/a> describes lost RS-485 data during RF testing. It demonstrates a functional problem requiring investigation; it does not establish that the power supply caused it. In another <a href=\"https:\/\/e2e.ti.com\/support\/isolation-group\/isolation\/f\/isolation-forum\/614927\/iso7740-noise-immunity-at-high-frequency\" target=\"_blank\" rel=\"noopener\">TI high-frequency immunity discussion<\/a>, the response asks for the end equipment and test expectations because evaluation-board results depend on the system.<\/p>\n<h2 id=\"finding\"><span class=\"ez-toc-section\" id=\"Record_an_RF_finding_without_guessing_its_cause\"><\/span>Record an RF finding without guessing its cause<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Consider a hypothetical measuring instrument that continues displaying a supply-status light while its acquisition sequence skips a sample during an RF sweep. Preserve the frequency or step identifier, mode, affected function, rail observations, logs and required criterion. If monitoring did not capture a rail event, record that limitation. Neither an illuminated indicator nor missing rail data proves that the supply was unaffected or responsible.<\/p>\n<p>Use a common event reference so the laboratory record, application log and electrical observations can be compared. Have the laboratory review the observation arrangement; monitoring cables and auxiliary equipment must be identified as part of the setup. Distinguish a repeatable RF-related finding from an ordinary application fault before attributing a mechanism.<\/p>\n<h2 id=\"release\"><span class=\"ez-toc-section\" id=\"Close_the_evidence_gaps_before_release\"><\/span>Close the evidence gaps before release<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The release file should connect the exact equipment build to the adopted method, exposure program, configuration photographs, functional criteria, observations and disposition. Retain unresolved conditions and the reason for any limited scope. A successful investigation at one frequency or interface does not erase other applicable conditions.<\/p>\n<p>When changing the supply or its installation, identify what changed and ask the responsible EMC reviewers which evidence remains applicable. Preserve the accepted configuration for later substitutions. The useful supplier contribution is a model-specific report and clear integration conditions, followed by equipment-level verification where required.<\/p>\n<aside class=\"article-cta\" aria-label=\"Discuss RF evidence with WEHO\">\n<h2><span class=\"ez-toc-section\" id=\"Request_the_evidence_for_your_equipment_review\"><\/span>Request the evidence for your equipment review<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Send WEHO the exact supply model, equipment type, relevant ports and cables, operating modes, adopted RF test requirements and required functional behavior. Ask which model-specific reports are available and what configuration they cover.<\/p>\n<p><a class=\"button\" href=\"https:\/\/www.wehopower.com\/fa\/contact\/\">Discuss your RF evidence requirements<\/a><\/aside>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Define conducted and radiated RF immunity evidence by port, operating mode and monitored function before accepting a power supply in finished equipment.<\/p>","protected":false},"author":2,"featured_media":20232,"parent":0,"menu_order":35,"comment_status":"","ping_status":"","template":"","format":"standard","meta":{"_acf_changed":false,"_joinchat":[],"footnotes":""},"news_category":[284],"class_list":["post-20271","news","type-news","status-publish","format-standard","has-post-thumbnail","hentry","news_category-product-articles","entry"],"acf":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/news\/20271","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/types\/news"}],"author":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/comments?post=20271"}],"version-history":[{"count":0,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/news\/20271\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/media\/20232"}],"wp:attachment":[{"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/media?parent=20271"}],"wp:term":[{"taxonomy":"news_category","embeddable":true,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/news_category?post=20271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}