{"id":3974,"date":"2025-07-11T00:00:00","date_gmt":"2025-07-11T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/open-circuit-inductance-ocl-in-ethernet-transformers\/"},"modified":"2026-06-22T09:05:40","modified_gmt":"2026-06-22T09:05:40","slug":"open-circuit-inductance-ocl-in-ethernet-transformers","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/open-circuit-inductance-ocl-in-ethernet-transformers","title":{"rendered":"\u0110\u1ed9 t\u1ef1 c\u1ea3m m\u1ea1ch h\u1edf (OCL) trong bi\u1ebfn \u00e1p Ethernet l\u00e0 g\u00ec?"},"content":{"rendered":"<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\/5cc8bdb5ce014bb492c5eca30a57120b.webp\" alt=\"What Is OCL?\" class=\"wp-image-3970\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5cc8bdb5ce014bb492c5eca30a57120b.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5cc8bdb5ce014bb492c5eca30a57120b-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5cc8bdb5ce014bb492c5eca30a57120b-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5cc8bdb5ce014bb492c5eca30a57120b-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/5cc8bdb5ce014bb492c5eca30a57120b-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong m\u1ea1ng Ethernet v\u00e0 truy\u1ec1n t\u00edn hi\u1ec7u, hi\u1ec7u su\u1ea5t \u0111i\u1ec7n c\u1ee7a bi\u1ebfn \u00e1p LAN \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c duy tr\u00ec giao ti\u1ebfp \u1ed5n \u0111\u1ecbnh v\u00e0 kh\u00f4ng b\u1ecb nhi\u1ec5u. M\u1ed9t trong nh\u1eefng th\u00f4ng s\u1ed1 quan tr\u1ecdng nh\u1ea5t c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n t\u1eeb t\u00ednh\u2014\u0111\u1eb7c bi\u1ec7t l\u00e0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17548-lan-transformer.htm\">Bi\u1ebfn \u00e1p Ethernet<\/a> \u2014l\u00e0 \u0111\u1ed9 t\u1ef1 c\u1ea3m m\u1ea1ch h\u1edf (OCL).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang t\u00f4i gi\u1ea3i th\u00edch OCL l\u00e0 g\u00ec, t\u1ea1i sao n\u00f3 quan tr\u1ecdng, c\u00e1ch \u0111o n\u00f3 v\u00e0 c\u00e1ch n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/\">LINK-PP\u2019s<br><\/a> Gi\u1ea3i ph\u00e1p t\u1eeb t\u00ednh LAN.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udd0d OCL l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110\u1ed9 t\u1ef1 c\u1ea3m m\u1ea1ch h\u1edf<\/strong>, vi\u1ebft t\u1eaft l\u00e0 <strong>OCL<\/strong>, \u0111\u1ec1 c\u1eadp \u0111\u1ebfn \u0111\u1ed9 t\u1ef1 c\u1ea3m \u0111\u01b0\u1ee3c \u0111o tr\u00ean m\u1ed9t cu\u1ed9n d\u00e2y c\u1ee7a bi\u1ebfn \u00e1p <strong>khi t\u1ea5t c\u1ea3 c\u00e1c cu\u1ed9n d\u00e2y c\u00f2n l\u1ea1i \u0111\u01b0\u1ee3c \u0111\u1ec3 h\u1edf<\/strong> (kh\u00f4ng n\u1ed1i). Gi\u00e1 tr\u1ecb n\u00e0y ph\u1ea3n \u00e1nh l\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng t\u1eeb m\u00e0 cu\u1ed9n d\u00e2y c\u00f3 th\u1ec3 t\u00edch tr\u1eef trong \u0111i\u1ec1u ki\u1ec7n kh\u00f4ng t\u1ea3i, \u0111i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn gh\u00e9p t\u00edn hi\u1ec7u, \u1ee9c ch\u1ebf nhi\u1ec5u v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n Ethernet nh\u01b0 <strong>IEEE 802.3<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong \u1ee9ng d\u1ee5ng Ethernet, OCL r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Truy\u1ec1n t\u00edn hi\u1ec7u hi\u1ec7u qu\u1ea3 qua c\u00e1c c\u1eb7p vi sai<\/p><\/li><li><p>Kh\u1ea3 n\u0103ng lo\u1ea1i b\u1ecf nhi\u1ec5u ch\u1ebf \u0111\u1ed9 chung<\/p><\/li><li><p>Ph\u1ed1i h\u1ee3p tr\u1edf kh\u00e1ng \u1ed5n \u0111\u1ecbnh<\/p><\/li><li><p>C\u00e1ch ly \u0111\u00fang gi\u1eefa PHY v\u00e0 th\u00e0nh ph\u1ea7n t\u1eeb t\u00ednh<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udd27 C\u00e1ch \u0111o OCL?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">OCL th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng m\u00e1y \u0111o LCR trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1eed nghi\u1ec7m c\u1ee5 th\u1ec3, ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>T\u1ea7n s\u1ed1 th\u1eed nghi\u1ec7m<\/strong>: 100 kHz<\/p><\/li><li><p><strong>M\u1ee9c t\u00edn hi\u1ec7u<\/strong>: 100 mVrms<\/p><\/li><li><p><strong>D\u00f2ng \u0111i\u1ec7n l\u1ec7ch m\u1ed9t chi\u1ec1u (DC bias)<\/strong>: 8 mA (ho\u1eb7c theo th\u00f4ng s\u1ed1 quy \u0111\u1ecbnh)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u quan tr\u1ecdng l\u00e0 t\u1ea5t c\u1ea3 <strong>c\u00e1c cu\u1ed9n th\u1ee9 c\u1ea5p ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1ec3 h\u1edf<\/strong> trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, cho ph\u00e9p m\u00e1y \u0111o \u0111\u1ecdc \u0111\u1ed9 t\u1ef1 c\u1ea3m t\u1eeb h\u00f3a c\u1ee7a cu\u1ed9n s\u01a1 c\u1ea5p m\u00e0 kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi gh\u00e9p h\u1ed7 c\u1ea3m.<\/p>\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\/34451f919bc945aa89c55a99bcf516ee.webp\" alt=\"Open Circuit Inductance (OCL)\" class=\"wp-image-3971\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/34451f919bc945aa89c55a99bcf516ee.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/34451f919bc945aa89c55a99bcf516ee-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/34451f919bc945aa89c55a99bcf516ee-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/34451f919bc945aa89c55a99bcf516ee-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/34451f919bc945aa89c55a99bcf516ee-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udfaf \u1ee8ng d\u1ee5ng v\u00e0 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn hi\u1ec7u su\u1ea5t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17548-lan-transformer.htm\">bi\u1ebfn \u00e1p Ethernet<\/a> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf t\u1ed1t v\u1edbi gi\u00e1 tr\u1ecb OCL ph\u00f9 h\u1ee3p s\u1ebd \u0111\u1ea3m b\u1ea3o truy\u1ec1n t\u00edn hi\u1ec7u tr\u01a1n tru trong c\u00e1c m\u00f4i tr\u01b0\u1eddng Ethernet t\u1ed1c \u0111\u1ed9 cao nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>10\/100\/1000Base-T\/2,5\/5\/10G<\/strong> c\u00e1c m\u1ea1ng<\/p><\/li><li><p><strong>\u1ee8ng d\u1ee5ng Ethernet PoE\/PoE+<\/strong><\/p><\/li><li><p><strong>H\u1ec7 th\u1ed1ng Ethernet c\u00f4ng nghi\u1ec7p v\u00e0 \u00f4 t\u00f4<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c h\u1ec7 th\u1ed1ng n\u00e0y, OCL li\u00ean quan tr\u1ef1c ti\u1ebfp \u0111\u1ebfn:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 271px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"271\"><p>Y\u1ebfu t\u1ed1 hi\u1ec7u su\u1ea5t<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>T\u00e1c \u0111\u1ed9ng c\u1ee7a OCL<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"271\"><p>\u0110\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>OCL cao gi\u00fap b\u1ea3o to\u00e0n \u0111\u1ed9 trung th\u1ef1c d\u1ea1ng s\u00f3ng<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"271\"><p>\u1ee8c ch\u1ebf EMI\/Nhi\u1ec5u<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>OCL ho\u1ea1t \u0111\u1ed9ng nh\u01b0 b\u1ed9 l\u1ecdc th\u00f4ng th\u1ea5p \u0111\u1ed1i v\u1edbi nhi\u1ec5u ch\u1ebf \u0111\u1ed9 chung<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"271\"><p>Tu\u00e2n th\u1ee7 \u0111\u1eb7c t\u1ea3 IEEE<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ea1t ng\u01b0\u1ee1ng OCL l\u00e0 b\u1eaft bu\u1ed9c<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"271\"><p>D\u00f2ng t\u1eeb h\u00f3a<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>OCL cao h\u01a1n d\u1eabn \u0111\u1ebfn d\u00f2ng k\u00edch t\u1eeb l\u00f5i th\u1ea5p h\u01a1n<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2696\ufe0f OCL so v\u1edbi \u0111\u1ed9 t\u1ef1 c\u1ea3m r\u00f2<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 c\u1ea3 hai \u0111\u1ec1u l\u00e0 c\u00e1c th\u00f4ng s\u1ed1 \u0111\u1ed9 t\u1ef1 c\u1ea3m, nh\u01b0ng ch\u00fang bi\u1ec3u th\u1ecb c\u00e1c h\u00e0nh vi kh\u00e1c nhau trong bi\u1ebfn \u00e1p:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>Tham s\u1ed1<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ecbnh ngh\u0129a<br><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Thi\u1ebft l\u1eadp th\u1eed nghi\u1ec7m<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>OCL<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ed9 t\u1ef1 c\u1ea3m khi c\u00e1c cu\u1ed9n d\u00e2y kh\u00e1c \u0111\u1ec3 h\u1edf<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cu\u1ed9n th\u1ee9 c\u1ea5p \u0111\u1ec3 h\u1edf<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u1ed9 t\u1ef1 c\u1ea3m r\u00f2<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ed9 t\u1ef1 c\u1ea3m khi c\u00e1c cu\u1ed9n d\u00e2y kh\u00e1c \u0111\u01b0\u1ee3c n\u1ed1i t\u1eaft<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cu\u1ed9n th\u1ee9 c\u1ea5p n\u1ed1i t\u1eaft<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Vi\u1ec7c hi\u1ec3u r\u00f5 c\u1ea3 hai gi\u00e1 tr\u1ecb n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng khi \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t bi\u1ebfn \u00e1p tr\u00ean d\u1ea3i t\u1ea7n s\u1ed1.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udfc6 Bi\u1ebfn \u00e1p t\u1eeb t\u00ednh LAN t\u1ed1i \u01b0u OCL c\u1ee7a LINK-PP<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u00e1ng tin c\u1eady v\u00e0 nh\u00e0 cung c\u1ea5p OEM l\u00e2u n\u0103m cho c\u00e1c c\u00f4ng ty nh\u01b0 <strong>Texas Instruments<\/strong>, <strong>Intel<\/strong>, and <strong>Cisco<\/strong>, <strong>LINK-PP<\/strong> , LINK-PP cung c\u1ea5p danh m\u1ee5c \u0111a d\u1ea1ng <strong>bi\u1ebfn \u00e1p t\u1eeb t\u00ednh LAN<\/strong> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi th\u00f4ng s\u1ed1 <strong>\u0110\u1ed9 t\u1ef1 c\u1ea3m m\u1ea1ch h\u1edf (OCL)<\/strong> \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd. C\u00e1c linh ki\u1ec7n n\u00e0y \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u v\u01b0\u1ee3t tr\u1ed9i, kh\u1ea3 n\u0103ng \u1ee9c ch\u1ebf EMI v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n Ethernet IEEE.<\/p>\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\/da6f13c8797b47669860c849bf6e1c78.webp\" alt=\"LAN transformer magnetics\" class=\"wp-image-3972\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/da6f13c8797b47669860c849bf6e1c78.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/da6f13c8797b47669860c849bf6e1c78-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/da6f13c8797b47669860c849bf6e1c78-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/da6f13c8797b47669860c849bf6e1c78-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/da6f13c8797b47669860c849bf6e1c78-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00e1m ph\u00e1 b\u1ed9 s\u01b0u t\u1eadp c\u1ee7a ch\u00fang t\u00f4i:<br\/>\ud83d\udd17<br> <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17548-lan-transformer.htm\">Bi\u1ebfn \u00e1p t\u1eeb t\u00ednh LAN LINK-PP<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 s\u1ea3n ph\u1ea9m n\u1ed5i b\u1eadt bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/452808.htm\"><strong>LP84822ANL<\/strong><\/a> \u2013 Bi\u1ebfn \u00e1p t\u1eeb t\u00ednh 1000Base-T PoE+ 48 ch\u00e2n<br\/><strong>OCL:<\/strong> T\u1ed1i thi\u1ec3u 350\u03bcH t\u1ea1i 100kHz, 0,1V, d\u00f2ng l\u1ec7ch m\u1ed9t chi\u1ec1u 8mA<br\/>L\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng Ethernet PoE+ gigabit y\u00eau c\u1ea7u c\u00e1ch ly cao v\u00e0 hi\u1ec7u su\u1ea5t b\u1ec1n b\u1ec9.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/466256.htm\"><strong>LP72423ANL<\/strong><\/a> \u2013 M\u00f4-\u0111un t\u1eeb t\u00ednh 10GBase-T m\u1ed9t c\u1ed5ng<br\/><strong>OCL:<\/strong> T\u1ed1i thi\u1ec3u 200\u03bcH t\u1ea1i 100kHz, 100mA<br\/>\u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf cho m\u1ea1ng 10G t\u1ed1c \u0111\u1ed9 cao, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 r\u00f5 n\u00e9t t\u00edn hi\u1ec7u trong \u0111i\u1ec1u ki\u1ec7n d\u00f2ng \u0111i\u1ec7n l\u1edbn.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/439792.htm\"><strong>LPJG0926HENL<br><\/strong><\/a> \u2013 B\u1ed9 k\u1ebft n\u1ed1i RJ45 t\u00edch h\u1ee3p bi\u1ebfn \u00e1p t\u1eeb t\u00ednh 1000Base-T cho PoE+<br\/><strong>\u0110\u1ed9 t\u1ef1 c\u1ea3m OCL:<\/strong><br\/> T\u1ed1i thi\u1ec3u 350\u03bcH t\u1ea1i 100kHz, 0,1V, d\u00f2ng l\u1ec7ch m\u1ed9t chi\u1ec1u 8mA<br\/> T\u1ed1i thi\u1ec3u 120\u03bcH t\u1ea1i 100kHz, 0,1V, d\u00f2ng l\u1ec7ch m\u1ed9t chi\u1ec1u 18mA<br\/>M\u1ed9t m\u00f4-\u0111un RJ45 t\u1eeb t\u00ednh nh\u1ecf g\u1ecdn k\u1ebft h\u1ee3p h\u1ed7 tr\u1ee3 PoE+ v\u00e0 \u0111\u1ed9 t\u1ef1 c\u1ea3m \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u nh\u1eb1m \u0111\u1ea3m b\u1ea3o truy\u1ec1n t\u00edn hi\u1ec7u Ethernet \u1ed5n \u0111\u1ecbnh.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ea5t c\u1ea3 bi\u1ebfn \u00e1p t\u1eeb t\u00ednh LINK-PP \u0111\u1ec1u <strong>\u0111\u01b0\u1ee3c ki\u1ec3m tra OCL t\u1eebng \u0111\u01a1n v\u1ecb (100%)<\/strong> (kh\u00f4ng ki\u1ec3m tra theo l\u00f4), \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ed3ng nh\u1ea5t v\u00e0 hi\u1ec7u su\u1ea5t \u0111i\u1ec7n \u0111\u00e1ng tin c\u1eady tr\u00ean t\u1eebng s\u1ea3n ph\u1ea9m xu\u1ea5t x\u01b0\u1edfng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 K\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed9 t\u1ef1 c\u1ea3m m\u1ea1ch h\u1edf (OCL) l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 n\u1ec1n t\u1ea3ng trong vi\u1ec7c \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t bi\u1ebfn \u00e1p Ethernet, \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u, h\u00e0nh vi EMI v\u00e0 s\u1ef1 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n IEEE. \u0110\u1ed1i v\u1edbi c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf v\u00e0 k\u1ef9 s\u01b0, vi\u1ec7c hi\u1ec3u c\u00e1ch \u0111o OCL c\u0169ng nh\u01b0 t\u00e1c \u0111\u1ed9ng c\u1ee7a n\u00f3 l\u00ean c\u00e1c ch\u1ec9 s\u1ed1 truy\u1ec1n d\u1eabn then ch\u1ed1t l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu khi l\u1ef1a ch\u1ecdn bi\u1ebfn \u00e1p t\u1eeb t\u00ednh LAN cho c\u00e1c m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao v\u00e0 m\u1ea1ng h\u1ed7 tr\u1ee3 PoE. Cam k\u1ebft c\u1ee7a LINK-PP v\u1ec1 ki\u1ec3m tra OCL ch\u00ednh x\u00e1c v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n s\u1ea3n ph\u1ea9m khi\u1ebfn c\u00e1c bi\u1ebfn \u00e1p LAN c\u1ee7a h\u00e3ng tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u0111\u00e1ng tin c\u1eady trong nhi\u1ec1u \u1ee9ng d\u1ee5ng Ethernet\u2014t\u1eeb t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p \u0111\u1ebfn c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng trung t\u00e2m d\u1eef li\u1ec7u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >FAQ<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >OCL ngh\u0129a l\u00e0 g\u00ec trong bi\u1ebfn \u00e1p Ethernet?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">OCL l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a \u0111\u1ed9 t\u1ef1 c\u1ea3m m\u1ea1ch h\u1edf. B\u1ea1n \u0111o gi\u00e1 tr\u1ecb n\u00e0y khi cu\u1ed9n th\u1ee9 c\u1ea5p \u0111\u1ec3 h\u1edf. N\u00f3 cho bi\u1ebft m\u1ee9c \u0111\u1ed9 hi\u1ec7u qu\u1ea3 m\u00e0 bi\u1ebfn \u00e1p c\u1ee7a b\u1ea1n t\u00edch tr\u1eef n\u0103ng l\u01b0\u1ee3ng cho t\u00edn hi\u1ec7u Ethernet.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u1ea1i sao b\u1ea1n n\u00ean quan t\u00e2m \u0111\u1ebfn gi\u00e1 tr\u1ecb OCL?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u1ea7n gi\u00e1 tr\u1ecb OCL ph\u00f9 h\u1ee3p \u0111\u1ec3 gi\u1eef cho m\u1ea1ng Ethernet \u1ed5n \u0111\u1ecbnh. OCL th\u1ea5p c\u00f3 th\u1ec3 g\u00e2y m\u1ea5t d\u1eef li\u1ec7u. C\u00e1c bi\u1ebfn \u00e1p LINK-PP n\u00eau r\u00f5 gi\u00e1 tr\u1ecb OCL \u0111\u1ec3 d\u1ec5 d\u00e0ng l\u1ef1a ch\u1ecdn.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u00ecm gi\u00e1 tr\u1ecb OCL c\u1ee7a m\u1ed9t bi\u1ebfn \u00e1p?<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Ki\u1ec3m tra <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/message.htm\">b\u1ea3ng d\u1eef li\u1ec7u t\u1eeb LINK-PP<\/a> ho\u1eb7c c\u00e1c th\u01b0\u01a1ng hi\u1ec7u uy t\u00edn kh\u00e1c. T\u00ecm gi\u00e1 tr\u1ecb OCL t\u1ea1i 100 kHz v\u00e0 25\u00b0C. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea1n l\u1ef1a ch\u1ecdn bi\u1ebfn \u00e1p ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u m\u1ea1ng c\u1ee7a m\u00ecnh.<\/p><\/blockquote>","protected":false},"excerpt":{"rendered":"<p>\u0110\u1ed9 t\u1ef1 c\u1ea3m m\u1ea1ch h\u1edf (OCL) trong b\u1ed9 bi\u1ebfn \u00e1p Ethernet \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u v\u00e0 kh\u1ea3 n\u0103ng \u1ee9c ch\u1ebf EMI; OCL cao h\u01a1n gi\u00fap ng\u0103n ng\u1eeba m\u1ea5t d\u1eef li\u1ec7u.<\/p>","protected":false},"author":1,"featured_media":3973,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[23],"class_list":["post-3974","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-link-pp-lan-transformers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3974","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=3974"}],"version-history":[{"count":5,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3974\/revisions"}],"predecessor-version":[{"id":11374,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3974\/revisions\/11374"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/3973"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=3974"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=3974"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=3974"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}