{"id":5761,"date":"2025-07-15T00:00:00","date_gmt":"2025-07-15T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/emc-ems-emi-electromagnetic-compatibility-susceptibility-interference\/"},"modified":"2026-06-22T09:02:52","modified_gmt":"2026-06-22T09:02:52","slug":"emc-ems-emi-electromagnetic-compatibility-susceptibility-interference","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/emc-ems-emi-electromagnetic-compatibility-susceptibility-interference","title":{"rendered":"Nh\u1eefng \u0110i\u1ec1u B\u1ea1n C\u1ea7n Bi\u1ebft V\u1ec1 EMC, EMS v\u00e0 EMI"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Gi\u1edbi thi\u1ec7u<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed t\u1ed1c \u0111\u1ed9 cao hi\u1ec7n \u0111\u1ea1i v\u00e0 thi\u1ebft b\u1ecb truy\u1ec1n th\u00f4ng, <strong>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n t\u1eeb (EMC)<\/strong> l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 hi\u1ec7u n\u0103ng \u0111\u00e1ng tin c\u1eady. Trong qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf PCB, vi\u1ec7c hi\u1ec3u r\u00f5 v\u00e0 ki\u1ec3m so\u00e1t <strong>Nhi\u1ec5m \u0111i\u1ec7n t\u1eeb (EMI)<\/strong>, <strong>\u0110\u1ed9 nh\u1ea1y \u0111i\u1ec7n t\u1eeb (EMS)<\/strong>, and <strong>, b\u1ea1n n\u00e2ng cao kh\u1ea3 n\u0103ng v\u01b0\u1ee3t qua th\u1eed nghi\u1ec7m FCC ngay l\u1ea7n \u0111\u1ea7u ti\u00ean\u2014ti\u1ebft ki\u1ec7m c\u1ea3 th\u1eddi gian l\u1eabn chi ph\u00ed.<\/strong> b\u1ea3n th\u00e2n l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m \u0111\u1ea1t ch\u1ee9ng nh\u1eadn v\u00e0 v\u1eadn h\u00e0nh ho\u00e0n h\u1ea3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e0i vi\u1ebft n\u00e0y cung c\u1ea5p c\u00e1i nh\u00ecn t\u1ed5ng quan chi ti\u1ebft v\u1ec1 ba kh\u00e1i ni\u1ec7m n\u00e0y, t\u1ea7m quan tr\u1ecdng c\u1ee7a ch\u00fang trong thi\u1ebft k\u1ebf PCB c\u0169ng nh\u01b0 c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n. Ch\u00fang ta c\u0169ng s\u1ebd kh\u00e1m ph\u00e1 c\u00e1c v\u00ed d\u1ee5 s\u1ea3n ph\u1ea9m th\u1ef1c t\u1ebf, ch\u1eb3ng h\u1ea1n nh\u01b0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17492-integrated-rj45-connector.htm\">C\u00e1c m\u00f4-\u0111un RJ45 ICM<\/a>, nh\u1eb1m minh h\u1ecda c\u00e1c chi\u1ebfn l\u01b0\u1ee3c thi\u1ebft k\u1ebf EMC hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40274bcc62b04a7baa414dcaffacc006.webp\" alt=\"EMC EMS EMI\" class=\"wp-image-5757\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40274bcc62b04a7baa414dcaffacc006.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40274bcc62b04a7baa414dcaffacc006-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40274bcc62b04a7baa414dcaffacc006-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40274bcc62b04a7baa414dcaffacc006-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/40274bcc62b04a7baa414dcaffacc006-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c Kh\u00e1i Ni\u1ec7m C\u01a1 B\u1ea3n V\u1ec1 EMC, EMS v\u00e0 EMI<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Nhi\u1ec5u \u0111i\u1ec7n t\u1eeb (EMI)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-electromagnetic-interference\/\"><strong>EMI<\/strong><\/a> \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n t\u1eeb kh\u00f4ng mong mu\u1ed1n do m\u1ed9t PCB ho\u1eb7c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed ph\u00e1t ra. Nhi\u1ec5u n\u00e0y c\u00f3 th\u1ec3 lan truy\u1ec1n qua d\u1eabn d\u1eabn ho\u1eb7c b\u1ee9c x\u1ea1 v\u00e0 l\u00e0m gi\u00e1n \u0111o\u1ea1n ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed l\u00e2n c\u1eadn. EMI c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n m\u1ea1ch b\u00ean trong (v\u00ed d\u1ee5: b\u1ed9 \u0111i\u1ec1u ch\u1ec9nh chuy\u1ec3n m\u1ea1ch, \u0111\u01b0\u1eddng t\u00edn hi\u1ec7u xung nh\u1ecbp) l\u1eabn c\u00e1c ngu\u1ed3n b\u00ean ngo\u00e0i nh\u01b0 thi\u1ebft b\u1ecb c\u00f4ng nghi\u1ec7p g\u1ea7n \u0111\u00f3, m\u00e1y ph\u00e1t v\u00f4 tuy\u1ebfn ho\u1eb7c ph\u00f3ng \u0111i\u1ec7n t\u0129nh \u0111i\u1ec7n. Thi\u1ebft k\u1ebf EMC hi\u1ec7u qu\u1ea3 c\u1ea7n xem x\u00e9t c\u1ea3 vi\u1ec7c ph\u00e1t x\u1ea1 t\u1eeb thi\u1ebft b\u1ecb v\u00e0 kh\u1ea3 n\u0103ng mi\u1ec5n nhi\u1ec5m v\u1edbi c\u00e1c ngu\u1ed3n nhi\u1ec5u b\u00ean ngo\u00e0i.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>EMI d\u1eabn d\u1eabn:<\/strong> Lan truy\u1ec1n qua c\u00e1c \u0111\u01b0\u1eddng d\u00e2y c\u1ea5p ngu\u1ed3n ho\u1eb7c t\u00edn hi\u1ec7u.<\/p><\/li>\n\n\n\n<li><p><strong>EMI b\u1ee9c x\u1ea1:<\/strong> Lan truy\u1ec1n d\u01b0\u1edbi d\u1ea1ng s\u00f3ng \u0111i\u1ec7n t\u1eeb trong kh\u00f4ng gian.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110\u1ed9 nh\u1ea1y \u0111i\u1ec7n t\u1eeb (EMS)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>EMS<br><\/strong> th\u01b0\u1eddng \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 kh\u00e1i ni\u1ec7m t\u01b0\u01a1ng ph\u1ea3n v\u1edbi kh\u1ea3 n\u0103ng mi\u1ec5n nhi\u1ec5m trong ki\u1ec3m tra EMC. M\u1eb7c d\u00f9 kh\u00f4ng ph\u1ea3i thu\u1eadt ng\u1eef ti\u00eau chu\u1ea9n ch\u00ednh th\u1ee9c, n\u00f3 v\u1eabn \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 m\u00f4 t\u1ea3 xu h\u01b0\u1edbng thi\u1ebft b\u1ecb g\u1eb7p s\u1ef1 c\u1ed1 hi\u1ec7u n\u0103ng khi ti\u1ebfp x\u00fac v\u1edbi c\u00e1c nhi\u1ec5u \u0111i\u1ec7n t\u1eeb. Trong ng\u00f4n ng\u1eef quy \u0111\u1ecbnh, kh\u00e1i ni\u1ec7m n\u00e0y \u0111\u01b0\u1ee3c x\u1eed l\u00fd ch\u00ednh th\u1ee9c th\u00f4ng qua ki\u1ec3m tra mi\u1ec5n nhi\u1ec5m theo c\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 IEC 61000-4-x.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n t\u1eeb (EMC)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-emc-electromagnetic-compatibility\/\"><strong>, b\u1ea1n n\u00e2ng cao kh\u1ea3 n\u0103ng v\u01b0\u1ee3t qua th\u1eed nghi\u1ec7m FCC ngay l\u1ea7n \u0111\u1ea7u ti\u00ean\u2014ti\u1ebft ki\u1ec7m c\u1ea3 th\u1eddi gian l\u1eabn chi ph\u00ed.<\/strong><\/a> l\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a m\u1ed9t thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed v\u1eadn h\u00e0nh \u0111\u00fang c\u00e1ch trong m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec7n t\u1eeb c\u1ee7a n\u00f3 m\u00e0 kh\u00f4ng ph\u00e1t ra EMI qu\u00e1 m\u1ee9c ho\u1eb7c b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi EMI b\u00ean ngo\u00e0i. EMC bao g\u1ed3m hai kh\u00eda c\u1ea1nh then ch\u1ed1t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Ki\u1ec3m so\u00e1t ph\u00e1t x\u1ea1:<\/strong> Gi\u1ea3m thi\u1ec3u ph\u00e1t x\u1ea1 EMI c\u1ee7a thi\u1ebft b\u1ecb.<\/p><\/li>\n\n\n\n<li><p><strong>Thi\u1ebft k\u1ebf mi\u1ec5n nhi\u1ec5m:<\/strong> T\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu c\u1ee7a thi\u1ebft b\u1ecb tr\u01b0\u1edbc EMI t\u1eeb b\u00ean ngo\u00e0i.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1ef1 Kh\u00e1c Bi\u1ec7t Ch\u00ednh Gi\u1eefa EMC, EMS v\u00e0 EMI<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 112px;\"\/><col style=\"width: 215px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"112\"><p>Thu\u1eadt ng\u1eef<\/p><\/th><th colspan=\"1\" rowspan=\"1\" colwidth=\"215\"><p>Vai tr\u00f2<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>M\u00f4 t\u1ea3<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"112\"><p>EMI<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"215\"><p>Ngu\u1ed3n g\u00e2y nhi\u1ec5u<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Nhi\u1ec5u \u0111i\u1ec7n t\u1eeb do thi\u1ebft b\u1ecb ho\u1eb7c m\u00f4i tr\u01b0\u1eddng t\u1ea1o ra.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"112\"><p>EMS<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"215\"><p>\u0110\u1ed9 nh\u1ea1y<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>M\u1ee9c \u0111\u1ed9 d\u1ec5 b\u1ecb t\u1ed5n th\u01b0\u01a1ng c\u1ee7a thi\u1ebft b\u1ecb tr\u01b0\u1edbc nhi\u1ec5u \u0111i\u1ec7n t\u1eeb b\u00ean ngo\u00e0i.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"112\"><p>, b\u1ea1n n\u00e2ng cao kh\u1ea3 n\u0103ng v\u01b0\u1ee3t qua th\u1eed nghi\u1ec7m FCC ngay l\u1ea7n \u0111\u1ea7u ti\u00ean\u2014ti\u1ebft ki\u1ec7m c\u1ea3 th\u1eddi gian l\u1eabn chi ph\u00ed.<\/p><\/td><td colspan=\"1\" rowspan=\"1\" colwidth=\"215\"><p>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kh\u1ea3 n\u0103ng c\u1ee7a thi\u1ebft b\u1ecb trong vi\u1ec7c gi\u1edbi h\u1ea1n ph\u00e1t x\u1ea1 EMI v\u00e0 ch\u1ed1ng ch\u1ecbu EMI b\u00ean ngo\u00e0i.<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a2a62048c59944f98210a4a8165067d3.webp\" alt=\"EMC EMS EMI\" class=\"wp-image-5758\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a2a62048c59944f98210a4a8165067d3.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a2a62048c59944f98210a4a8165067d3-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a2a62048c59944f98210a4a8165067d3-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a2a62048c59944f98210a4a8165067d3-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a2a62048c59944f98210a4a8165067d3-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c Chi\u1ebfn L\u01b0\u1ee3c Thi\u1ebft K\u1ebf PCB cho EMC, EMS v\u00e0 EMI<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Gi\u1ea3m EMI<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>C\u00e1c th\u00e0nh ph\u1ea7n l\u1ecdc:<\/strong> S\u1eed d\u1ee5ng t\u1ee5 \u0111i\u1ec7n, cu\u1ed9n c\u1ea3m v\u00e0 h\u1ea1t ferrite \u0111\u1ec3 tri\u1ec7t ti\u00eau nhi\u1ec5u d\u1eabn d\u1eabn v\u00e0 nhi\u1ec5u b\u1ee9c x\u1ea1.<\/p><\/li>\n\n\n\n<li><p><strong>C\u00e1c k\u1ef9 thu\u1eadt che ch\u1eafn:<\/strong> \u00c1p d\u1ee5ng v\u1ecf che kim lo\u1ea1i v\u00e0 v\u1ecf b\u1ecdc n\u1ed1i \u0111\u1ea5t \u0111\u1ec3 ch\u1eb7n EMI b\u1ee9c x\u1ea1.<\/p><\/li>\n\n\n\n<li><p><strong>B\u1ed1 tr\u00ed t\u1ed1i \u01b0u:<\/strong> R\u00fat ng\u1eafn c\u00e1c v\u00f2ng t\u00edn hi\u1ec7u t\u1ea7n s\u1ed1 cao, t\u00e1ch ri\u00eang c\u00e1c m\u1ea1ch g\u00e2y nhi\u1ec5u v\u00e0 m\u1ea1ch nh\u1ea1y c\u1ea3m, \u0111\u1ed3ng th\u1eddi tri\u1ec3n khai m\u1eb7t ph\u1eb3ng \u0111\u1ea5t li\u1ec1n m\u1ea1ch.<\/p><\/li>\n\n\n\n<li><p><strong>\u0110\u1ecbnh tuy\u1ebfn c\u00f3 ki\u1ec3m so\u00e1t:<\/strong> Qu\u1ea3n l\u00fd tr\u1edf kh\u00e1ng v\u00e0 gi\u1ea3m thi\u1ec3u d\u00f2ng \u0111i\u1ec7n ch\u1ebf \u0111\u1ed9 chung.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">N\u00e2ng cao EMS<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>C\u00e1c th\u00e0nh ph\u1ea7n b\u1ea3o v\u1ec7:<\/strong> Tri\u1ec3n khai b\u1ed9 b\u1ea3o v\u1ec7 qu\u00e1 \u00e1p, b\u1ed9 d\u1eadp \u0111\u1ec9nh \u0111i\u1ec7n \u00e1p qu\u00e1 \u0111\u1ed9 (TVS) v\u00e0 thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 ph\u00f3ng \u0111i\u1ec7n t\u0129nh \u0111i\u1ec7n (ESD).<\/p><\/li>\n\n\n\n<li><p><strong>Thi\u1ebft k\u1ebf ngu\u1ed3n c\u1ea5p:<\/strong> \u0110\u1ea3m b\u1ea3o c\u00e1c \u0111\u01b0\u1eddng c\u1ea5p ngu\u1ed3n s\u1ea1ch v\u00e0 \u1ed5n \u0111\u1ecbnh k\u00e8m l\u1ecdc ph\u00f9 h\u1ee3p.<\/p><\/li>\n\n\n\n<li><p><strong>S\u1ef1 k\u1ebft h\u1ee3p ph\u1ea7n c\u1ee9ng \u2013 ph\u1ea7n m\u1ec1m:<\/strong> K\u1ebft h\u1ee3p b\u1ed9 l\u1ecdc ph\u1ea7n c\u1ee9ng v\u1edbi x\u1eed l\u00fd ng\u1eaft ph\u1ea7n m\u1ec1m nh\u1eb1m c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng mi\u1ec5n nhi\u1ec5m.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110\u00e1p \u1ee8ng C\u00e1c Ti\u00eau Chu\u1ea9n EMC<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh qu\u1ed1c t\u1ebf nh\u01b0 <strong>, quy \u0111\u1ecbnh v\u1ec1 ph\u00e1t x\u1ea1 b\u1ee9c x\u1ea1 v\u00e0 ph\u00e1t x\u1ea1 d\u1eabn t\u1eeb thi\u1ebft b\u1ecb k\u1ef9 thu\u1eadt s\u1ed1.<\/strong>, <strong>CISPR<br><\/strong>, and <strong>IEC 61000<\/strong> lo\u1ea1t ti\u00eau chu\u1ea9n.<\/p><\/li>\n\n\n\n<li><p>\u0110\u01b0a c\u00e1c y\u1ebfu t\u1ed1 EMC v\u00e0o giai \u0111o\u1ea1n thi\u1ebft k\u1ebf s\u1edbm \u0111\u1ec3 gi\u1ea3m thi\u1ec3u vi\u1ec7c thi\u1ebft k\u1ebf l\u1ea1i t\u1ed1n k\u00e9m.<\/p><\/li>\n\n\n\n<li><p>C\u00e2n b\u1eb1ng gi\u1eefa gi\u1ea3m ph\u00e1t x\u1ea1 v\u00e0 t\u0103ng kh\u1ea3 n\u0103ng mi\u1ec5n nhi\u1ec5m nh\u1eb1m \u0111\u1ea1t y\u00eau c\u1ea7u tu\u00e2n th\u1ee7 v\u00e0 v\u1eadn h\u00e0nh \u0111\u00e1ng tin c\u1eady.<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5, IEC 61000-4-2 quy \u0111\u1ecbnh ki\u1ec3m tra mi\u1ec5n nhi\u1ec5m v\u1edbi ph\u00f3ng \u0111i\u1ec7n t\u0129nh \u0111i\u1ec7n (ESD), trong khi IEC 61000-4-3 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn ki\u1ec3m tra mi\u1ec5n nhi\u1ec5m v\u1edbi b\u1ee9c x\u1ea1 RF. Ph\u1ea7n 15 c\u1ee7a FCC gi\u1edbi h\u1ea1n m\u1ee9c ph\u00e1t x\u1ea1 EMI \u0111\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb b\u00e1n t\u1ea1i Hoa K\u1ef3, ch\u1ee7 y\u1ebfu \u00e1p d\u1ee5ng cho c\u00e1c thi\u1ebft b\u1ecb ph\u00e1t x\u1ea1 v\u00f4 t\u00ecnh nh\u01b0 thi\u1ebft b\u1ecb k\u1ef9 thu\u1eadt s\u1ed1.<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">Ki\u1ec3m tra EMC<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c quy tr\u00ecnh ki\u1ec3m tra EMC x\u00e1c minh thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ph\u00e1t x\u1ea1 v\u00e0 mi\u1ec5n nhi\u1ec5m. B\u1ea1n c\u1ea7n ki\u1ec3m tra c\u1ea3 m\u1ee9c \u0111\u1ed9 nhi\u1ec5u \u0111i\u1ec7n t\u1eeb thi\u1ebft b\u1ecb ph\u00e1t ra v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng nhi\u1ec5u \u0111i\u1ec7n t\u1eeb t\u1eeb b\u00ean ngo\u00e0i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quy tr\u00ecnh ki\u1ec3m tra EMC ti\u00eau chu\u1ea9n bao g\u1ed3m:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><p>\u0110\u1eb7t thi\u1ebft b\u1ecb v\u00e0o m\u00f4i tr\u01b0\u1eddng ki\u1ec3m so\u00e1t, v\u00ed d\u1ee5 bu\u1ed3ng kh\u00f4ng v\u1ecdng \u00e2m.<\/p><\/li>\n\n\n\n<li><p>\u0110o l\u01b0\u1eddng ph\u00e1t x\u1ea1 \u0111i\u1ec7n t\u1eeb tr\u00ean d\u1ea3i t\u1ea7n s\u1ed1 r\u1ed9ng.<\/p><\/li>\n\n\n\n<li><p>Ph\u01a1i thi\u1ebft b\u1ecb d\u01b0\u1edbi c\u00e1c tr\u01b0\u1eddng \u0111i\u1ec7n t\u1eeb b\u00ean ngo\u00e0i \u0111\u1ec3 ki\u1ec3m tra kh\u1ea3 n\u0103ng mi\u1ec5n nhi\u1ec5m.<\/p><\/li>\n\n\n\n<li><p>M\u00f4 ph\u1ecfng c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111i\u1ec7n t\u1eeb th\u1ef1c t\u1ebf nh\u1eb1m \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady.<\/p><\/li>\n\n\n\n<li><p>So s\u00e1nh k\u1ebft qu\u1ea3 v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n quy \u0111\u1ecbnh nh\u01b0 Ph\u1ea7n 15 c\u1ee7a FCC v\u00e0 Ch\u1ec9 th\u1ecb EMC c\u1ee7a EU.<\/p><\/li>\n\n\n\n<li><p>Ch\u1ee9ng nh\u1eadn c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ea1t y\u00eau c\u1ea7u, cho ph\u00e9p \u0111\u01b0a s\u1ea3n ph\u1ea9m ra th\u1ecb tr\u01b0\u1eddng v\u1edbi gi\u1ea5y ph\u00e9p FCC ho\u1eb7c d\u1ea5u CE.<\/p><\/li>\n\n\n\n<li><p>\u00c1p d\u1ee5ng th\u00eam c\u00e1c ti\u00eau chu\u1ea9n nh\u01b0 IEC v\u00e0 CISPR cho c\u00e1c danh m\u1ee5c s\u1ea3n ph\u1ea9m c\u1ee5 th\u1ec3.<\/p><\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fc4f115e26464e7b8a415806244da82e-1024x576.jpg\" alt=\"The standard EMC testing process includes\" class=\"wp-image-5759\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fc4f115e26464e7b8a415806244da82e-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fc4f115e26464e7b8a415806244da82e-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fc4f115e26464e7b8a415806244da82e-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fc4f115e26464e7b8a415806244da82e-18x10.jpg 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/fc4f115e26464e7b8a415806244da82e.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Nghi\u00ean C\u1ee9u Tr\u01b0\u1eddng H\u1ee3p: C\u00e1c \u0110i\u1ec3m N\u1ed5i B\u1eadt V\u1ec1 Thi\u1ebft K\u1ebf EMC C\u1ee7a LINK-PP <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17492-integrated-rj45-connector.htm\">\u0110\u1ea7u n\u1ed1i RJ45<\/a><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>T\u1ed1i \u01b0u h\u00f3a che ch\u1eafn:<\/strong> V\u1ecf che kim lo\u1ea1i nhi\u1ec1u l\u1edbp hi\u1ec7u qu\u1ea3 gi\u1ea3m EMI b\u1ee9c x\u1ea1.<\/p><\/li>\n\n\n\n<li><p><strong>C\u00e1c th\u00e0nh ph\u1ea7n t\u1eeb t\u00edch h\u1ee3p:<\/strong> Bi\u1ebfn \u00e1p t\u00edch h\u1ee3p s\u1eb5n gi\u00fap gi\u1ea3m nhi\u1ec5u ch\u1ebf \u0111\u1ed9 chung v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u.<\/p><\/li>\n\n\n\n<li><p><strong>N\u1ed1i \u0111\u1ea5t PCB:<\/strong> PCB nhi\u1ec1u l\u1edbp v\u1edbi m\u1eb7t ph\u1eb3ng \u0111\u1ea5t li\u00ean t\u1ee5c nh\u1eb1m t\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1eddng tr\u1edf v\u1ec1.<\/p><\/li>\n\n\n\n<li><p><strong>L\u1ecdc v\u00e0 c\u00e1ch ly:<\/strong> \u0110\u1eb7t chi\u1ebfn l\u01b0\u1ee3c c\u00e1c h\u1ea1t ferrite v\u00e0 t\u1ee5 \u0111i\u1ec7n nh\u1eb1m gi\u1ea3m nhi\u1ec5u d\u1eabn d\u1eabn.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Thi\u1ebft k\u1ebf n\u00e0y kh\u00f4ng ch\u1ec9 v\u01b0\u1ee3t qua c\u00e1c b\u00e0i ki\u1ec3m tra ph\u00e1t x\u1ea1 EMI nghi\u00eam ng\u1eb7t m\u00e0 c\u00f2n th\u1ec3 hi\u1ec7n kh\u1ea3 n\u0103ng mi\u1ec5n nhi\u1ec5m EMS xu\u1ea5t s\u1eafc, \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n EMC c\u00f4ng nghi\u1ec7p v\u00e0 th\u01b0\u01a1ng m\u1ea1i nh\u1eb1m \u0111\u1ea3m b\u1ea3o v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh cho thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">K\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">EMI, EMS v\u00e0 EMC l\u00e0 nh\u1eefng kh\u00e1i ni\u1ec7m n\u1ec1n t\u1ea3ng trong thi\u1ebft k\u1ebf PCB v\u00e0 s\u1ea3n xu\u1ea5t \u0111i\u1ec7n t\u1eed. Vi\u1ec7c hi\u1ec3u r\u00f5 m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang c\u0169ng nh\u01b0 \u00e1p d\u1ee5ng c\u00e1c chi\u1ebfn l\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u00e0 ki\u1ec3m tra hi\u1ec7u qu\u1ea3 c\u00f3 th\u1ec3 ng\u0103n ng\u1eeba nhi\u1ec5u \u0111i\u1ec7n t\u1eeb v\u00e0 n\u00e2ng cao \u0111\u1ed9 tin c\u1eady c\u1ee7a thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p c\u00e1c bi\u1ec7n ph\u00e1p l\u1ecdc, che ch\u1eafn, t\u1ed1i \u01b0u h\u00f3a b\u1ed1 tr\u00ed linh ki\u1ec7n v\u00e0 t\u00edch h\u1ee3p c\u00e1c th\u00e0nh ph\u1ea7n ch\u1ea5t l\u01b0\u1ee3ng cao\u2014nh\u01b0 \u0111\u01b0\u1ee3c minh h\u1ecda b\u1edfi c\u00e1c module RJ45 ICM c\u1ee7a LINK-PP\u2014c\u00e1c k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n EMC qu\u1ed1c t\u1ebf v\u00e0 \u0111\u1ea1t hi\u1ec7u n\u0103ng cao.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n t\u1eeb trong c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n mu\u1ed1n c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed c\u1ee7a m\u00ecnh ho\u1ea1t \u0111\u1ed9ng h\u00e0i h\u00f2a v\u1edbi nhau m\u00e0 kh\u00f4ng g\u00e2y ra hay ch\u1ecbu \u1ea3nh h\u01b0\u1edfng t\u1eeb nhi\u1ec5u \u0111i\u1ec7n t\u1eeb. Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n t\u1eeb \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady trong c\u00e1c m\u00f4i tr\u01b0\u1eddng th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng c\u1ee7a nhi\u1ec5u \u0111i\u1ec7n t\u1eeb (EMI) trong thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p che ch\u1eafn, n\u1ed1i \u0111\u1ea5t v\u00e0 b\u1ed9 l\u1ecdc EMI. Nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y gi\u00fap ch\u1eb7n c\u00e1c nhi\u1ec5u \u0111i\u1ec7n t\u1eeb v\u00e0 gi\u1ea3m \u0111\u1ed9 nh\u1ea1y c\u1ea3m. Vi\u1ec7c b\u1ed1 tr\u00ed m\u1ea1ch h\u1ee3p l\u00fd c\u00f9ng ki\u1ec3m tra \u0111\u00fang c\u00e1ch c\u0169ng g\u00f3p ph\u1ea7n c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1ea1i sao vi\u1ec7c ki\u1ec3m tra EMC l\u1ea1i quan tr\u1ecdng tr\u01b0\u1edbc khi \u0111\u01b0a s\u1ea3n ph\u1ea9m ra th\u1ecb tr\u01b0\u1eddng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u1ea7n th\u1ef1c hi\u1ec7n ki\u1ec3m tra EMC \u0111\u1ec3 x\u00e1c minh xem thi\u1ebft b\u1ecb c\u1ee7a m\u00ecnh c\u00f3 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n v\u00e0 quy \u0111\u1ecbnh v\u1ec1 EMC hay kh\u00f4ng. Vi\u1ec7c v\u01b0\u1ee3t qua ki\u1ec3m tra tu\u00e2n th\u1ee7 EMC gi\u00fap b\u1ea1n tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 g\u00e2y nhi\u1ec5u v\u00e0 \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m an to\u00e0n, \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Xem Th\u00eam<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-electromagnetic-interference\/\">Hi\u1ec3u r\u00f5 nguy\u00ean nh\u00e2n v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a nhi\u1ec5u \u0111i\u1ec7n t\u1eeb (EMI)<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-emc-electromagnetic-compatibility\/\">H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n t\u1eeb (EMC) \u2013 Gi\u1ea3i th\u00edch chi ti\u1ebft<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-you-need-to-know-about-power-over-ethernet\/\">Nh\u1eefng th\u00f4ng tin thi\u1ebft y\u1ebfu m\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u n\u00ean hi\u1ec3u v\u1ec1 C\u00f4ng ngh\u1ec7 Cung c\u1ea5p \u0110i\u1ec7n qua Ethernet (Power Over Ethernet)<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Gi\u1ea3i th\u00edch EMC, EMS v\u00e0 EMI: Hi\u1ec3u c\u00e1ch t\u00ednh t\u01b0\u01a1ng th\u00edch, kh\u1ea3 n\u0103ng nh\u1ea1y c\u1ea3m v\u00e0 nhi\u1ec5u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady c\u1ee7a thi\u1ebft b\u1ecb, m\u1ee9c \u0111\u1ed9 tu\u00e2n th\u1ee7 v\u00e0 hi\u1ec7u su\u1ea5t \u0111i\u1ec7n t\u1eed.<\/p>","protected":false},"author":1,"featured_media":5760,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[22],"class_list":["post-5761","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-integrated-rj45-connectors"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5761","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/comments?post=5761"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5761\/revisions"}],"predecessor-version":[{"id":11356,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5761\/revisions\/11356"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/5760"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=5761"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=5761"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=5761"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}