{"id":4652,"date":"2025-10-20T11:12:00","date_gmt":"2025-10-20T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/key-functions-of-poe-lan-transformers\/"},"modified":"2026-06-22T06:11:51","modified_gmt":"2026-06-22T06:11:51","slug":"key-functions-of-poe-lan-transformers","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/key-functions-of-poe-lan-transformers","title":{"rendered":"Bi\u1ebfn \u00e1p LAN PoE: \u0110\u1ea3m b\u1ea3o vi\u1ec7c truy\u1ec1n t\u1ea3i \u0111i\u1ec7n n\u0103ng v\u00e0 d\u1eef li\u1ec7u \u0111\u00e1ng tin c\u1eady"},"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\/c6df00ea48d242ae95b92d1d2ef8a692.webp\" alt=\"Key Functions of PoE LAN Transformers\" class=\"wp-image-4648\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c6df00ea48d242ae95b92d1d2ef8a692.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c6df00ea48d242ae95b92d1d2ef8a692-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c6df00ea48d242ae95b92d1d2ef8a692-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c6df00ea48d242ae95b92d1d2ef8a692-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c6df00ea48d242ae95b92d1d2ef8a692-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd39 C\u00e1c ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a b\u1ed9 bi\u1ebfn \u00e1p LAN PoE<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c h\u1ec7 th\u1ed1ng Ethernet hi\u1ec7n \u0111\u1ea1i, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-you-need-to-know-about-power-over-ethernet\/\"><strong>c\u00f4ng ngh\u1ec7 Cung c\u1ea5p \u0111i\u1ec7n qua Ethernet (PoE)<\/strong><\/a> c\u00f4ng ngh\u1ec7 n\u00e0y cho ph\u00e9p truy\u1ec1n \u0111\u1ed3ng th\u1eddi c\u1ea3 \u0111i\u1ec7n n\u0103ng v\u00e0 d\u1eef li\u1ec7u qua m\u1ed9t c\u00e1p Cat5e ho\u1eb7c Cat6 duy nh\u1ea5t. Th\u00e0nh ph\u1ea7n l\u00e0m cho s\u1ef1 t\u00edch h\u1ee3p li\u1ec1n m\u1ea1ch n\u00e0y tr\u1edf n\u00ean kh\u1ea3 thi ch\u00ednh l\u00e0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/466067.htm\"><strong>b\u1ed9 bi\u1ebfn \u00e1p LAN PoE<\/strong><\/a>\u2014 m\u1ed9t th\u00e0nh ph\u1ea7n t\u1eeb t\u00ednh then ch\u1ed1t \u0111\u1ea3m b\u1ea3o c\u00e1ch ly \u0111i\u1ec7n, \u0111\u1ed9 nguy\u00ean v\u1eb9n t\u00edn hi\u1ec7u v\u00e0 gh\u00e9p n\u1ed1i \u0111i\u1ec7n n\u0103ng hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi c\u00e1c thi\u1ebft b\u1ecb IoT, camera IP v\u00e0 \u0111i\u1ec3m truy c\u1eadp kh\u00f4ng d\u00e2y y\u00eau c\u1ea7u c\u00f4ng su\u1ea5t cao h\u01a1n v\u00e0 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u nhanh h\u01a1n, hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n t\u1eeb t\u00ednh LAN ng\u00e0y c\u00e0ng tr\u1edf n\u00ean quan tr\u1ecdng. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/\">LINK-PP<\/a>, nh\u00e0 s\u1ea3n xu\u1ea5t to\u00e0n c\u1ea7u h\u00e0ng \u0111\u1ea7u v\u1ec1 c\u00e1c \u0111\u1ea7u n\u1ed1i RJ45 t\u1eeb t\u00ednh v\u00e0 b\u1ed9 bi\u1ebfn \u00e1p PoE, cung c\u1ea5p c\u00e1c linh ki\u1ec7n \u0111\u1ed9 tin c\u1eady cao \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n IEEE 802.3af\/at\/bt.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd391. C\u00e1ch ly \u0111i\u1ec7n nh\u1eb1m b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/452786.htm\">b\u1ed9 bi\u1ebfn \u00e1p LAN PoE<\/a> l\u00e0 cung c\u1ea5p <strong>c\u00e1ch ly galvanic<\/strong> c\u00e1ch ly \u0111i\u1ec7n gi\u1eefa PHY Ethernet v\u00e0 c\u00e1p m\u1ea1ng. \u0110i\u1ec1u n\u00e0y ng\u0103n ch\u1eb7n s\u1ef1 ch\u00eanh l\u1ec7ch \u0111i\u1ec7n th\u1ebf \u0111\u1ea5t v\u00e0 c\u00e1c xung \u0111i\u1ec7n g\u00e2y h\u01b0 h\u1ea1i cho c\u00e1c m\u1ea1ch thu ph\u00e1t nh\u1ea1y c\u1ea3m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u1ee9c \u0111i\u1ec7n \u00e1p c\u00e1ch ly \u0111i\u1ec3n h\u00ecnh dao \u0111\u1ed9ng t\u1eeb <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/file\/datasheet\/lp82499anl.pdf\"><strong>1500 Vrms<\/strong><\/a><strong> \u0111\u1ebfn 2250 Vrms<\/strong>, ho\u00e0n to\u00e0n tu\u00e2n th\u1ee7 <strong>ti\u00eau chu\u1ea9n an to\u00e0n IEEE 802.3 v\u00e0 IEC<\/strong>.<br>Vi\u1ec7c c\u00e1ch ly n\u00e0y c\u00f2n n\u00e2ng cao \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh m\u1ea1ng b\u1eb1ng c\u00e1ch gi\u1ea3m nguy c\u01a1 m\u00e9o t\u00edn hi\u1ec7u v\u00e0 gh\u00e9p nhi\u1ec5u.<\/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\/a207f0a523be4df59e6d677d0f651a70.webp\" alt=\"Key Functions of PoE LAN Transformers\" class=\"wp-image-4649\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a207f0a523be4df59e6d677d0f651a70.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a207f0a523be4df59e6d677d0f651a70-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a207f0a523be4df59e6d677d0f651a70-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a207f0a523be4df59e6d677d0f651a70-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a207f0a523be4df59e6d677d0f651a70-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd392. Kh\u00e1ng nhi\u1ec5u ch\u1ebf \u0111\u1ed9 chung<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao, <strong>nhi\u1ec5u \u0111i\u1ec7n t\u1eeb (EMI)<\/strong> nhi\u1ec5u ch\u1ebf \u0111\u1ed9 chung c\u00f3 th\u1ec3 l\u00e0m suy gi\u1ea3m nghi\u00eam tr\u1ecdng hi\u1ec7u n\u0103ng d\u1eef li\u1ec7u. B\u1ed9 bi\u1ebfn \u00e1p LAN PoE ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ethernet-common-mode-choke-cmc-guide\/\"><strong>cu\u1ed9n kh\u00e1ng ch\u1ebf \u0111\u1ed9 chung<\/strong><\/a>, l\u1ecdc b\u1ecf nhi\u1ec5u kh\u00f4ng mong mu\u1ed1n v\u00e0 \u0111\u1ea3m b\u1ea3o ch\u1ec9 c\u00e1c t\u00edn hi\u1ec7u vi sai s\u1ea1ch m\u1edbi \u0111\u1ebfn \u0111\u01b0\u1ee3c PHY.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee9c n\u0103ng n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng trong c\u00e1c h\u1ec7 th\u1ed1ng <strong>Gigabit v\u00e0 10GBase-T<\/strong> , n\u01a1i ngay c\u1ea3 nhi\u1ec5u \u0111i\u1ec7n t\u1eeb (EMI) nh\u1ecf nh\u1ea5t c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn m\u1ea5t g\u00f3i ho\u1eb7c m\u1ea5t \u1ed5n \u0111\u1ecbnh li\u00ean k\u1ebft. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/466207.htm\">C\u00e1c b\u1ed9 bi\u1ebfn \u00e1p Ethernet LINK-PP<\/a> \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a v\u1edbi v\u1eadt li\u1ec7u l\u00f5i v\u00e0 c\u1ea5u tr\u00fac qu\u1ea5n d\u00e2y ch\u00ednh x\u00e1c nh\u1eb1m \u0111\u1ea1t hi\u1ec7u qu\u1ea3 lo\u1ea1i b\u1ecf EMI v\u01b0\u1ee3t tr\u1ed9i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd393. Ph\u1ed1i h\u1ee3p tr\u1edf kh\u00e1ng v\u00e0 x\u1eed l\u00fd t\u00edn hi\u1ec7u<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c b\u1ed9 bi\u1ebfn \u00e1p PoE c\u00f2n ch\u1ecbu tr\u00e1ch nhi\u1ec7m v\u1ec1 <strong>vi\u1ec7c ph\u1ed1i h\u1ee3p tr\u1edf kh\u00e1ng<\/strong> gi\u1eefa <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-phy-physical-layer-basics-explained\/\">PHY Ethernet<\/a> PHY v\u00e0 c\u00e1p xo\u1eafn \u0111\u00f4i, th\u01b0\u1eddng l\u00e0 100 \u03a9. Vi\u1ec7c ph\u1ed1i h\u1ee3p tr\u1edf kh\u00e1ng \u0111\u00fang c\u00e1ch gi\u00fap gi\u1ea3m thi\u1ec3u ph\u1ea3n x\u1ea1 v\u00e0 t\u1ed5n hao t\u00edn hi\u1ec7u, \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ieee-802-3-ethernet-standard-explained\/\"><strong>IEEE 802.3 <\/strong><\/a><strong>ti\u00eau chu\u1ea9n<\/strong> ti\u00eau chu\u1ea9n Ethernet v\u00e0 duy tr\u00ec \u0111\u1ed9 nguy\u00ean v\u1eb9n t\u00edn hi\u1ec7u tr\u00ean kho\u1ea3ng c\u00e1ch c\u00e1p d\u00e0i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee9c n\u0103ng n\u00e0y \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady m\u1ea1ng, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 <strong>t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p v\u00e0 gi\u00e1m s\u00e1t IP ngo\u00e0i tr\u1eddi<\/strong>, n\u01a1i chi\u1ec1u d\u00e0i c\u00e1p c\u00f3 th\u1ec3 v\u01b0\u1ee3t qu\u00e1 100 m\u00e9t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd394. Gh\u00e9p n\u1ed1i \u0111i\u1ec7n n\u0103ng trong h\u1ec7 th\u1ed1ng PoE<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00e1c v\u1edbi c\u00e1c b\u1ed9 bi\u1ebfn \u00e1p LAN th\u00f4ng th\u01b0\u1eddng, phi\u00ean b\u1ea3n PoE t\u00edch h\u1ee3p <strong>ch\u1ee9c n\u0103ng gh\u00e9p n\u1ed1i \u0111i\u1ec7n n\u0103ng<\/strong> th\u00f4ng qua c\u00e1c \u0111\u1ea7u n\u1ed1i trung t\u00e2m tr\u00ean cu\u1ed9n d\u00e2y bi\u1ebfn \u00e1p.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u1ede ph\u00eda <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/poe-pse-power-sourcing-equipment-guide\/\" target=\"_blank\" rel=\"\"><strong>PSE (Thi\u1ebft b\u1ecb C\u1ea5p ngu\u1ed3n)<\/strong> <\/a>ngu\u1ed3n c\u1ea5p (PSE), b\u1ed9 bi\u1ebfn \u00e1p ti\u00eam \u0111i\u1ec7n \u00e1p m\u1ed9t chi\u1ec1u (DC) v\u00e0o c\u00e1c c\u1eb7p d\u1eef li\u1ec7u.<\/p><\/li>\n\n\n\n<li><p>\u1ede ph\u00eda <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/poe-pd-powered-device-guide\/\" target=\"_blank\" rel=\"\"><strong>PD (Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n)<\/strong><\/a> \u1ede ph\u00eda.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n (PD), n\u00f3 l\u1ea5y \u0111i\u1ec7n n\u0103ng ra trong khi v\u1eabn duy tr\u00ec \u0111\u1ea7y \u0111\u1ee7 \u0111\u1ed9 nguy\u00ean v\u1eb9n t\u00edn hi\u1ec7u d\u1eef li\u1ec7u. <strong>PoE (15,4 W)<\/strong>, <strong>PoE+ (30 W)<\/strong>, and <strong>Thi\u1ebft k\u1ebf hai ch\u1ee9c n\u0103ng n\u00e0y cho ph\u00e9p v\u1eadn h\u00e0nh li\u1ec1n m\u1ea1ch c\u00e1c \u1ee9ng d\u1ee5ng<\/strong> PoE++ (l\u00ean \u0111\u1ebfn 90W).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">m\u00e0 kh\u00f4ng c\u1ea7n th\u00eam d\u00e2y d\u1eabn.<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd395. B\u1ea3o v\u1ec7 v\u00e0 n\u00e2ng cao \u0111\u1ed9 tin c\u1eady<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c b\u1ed9 bi\u1ebfn \u00e1p LAN PoE b\u1ea3o v\u1ec7 c\u1ed5ng Ethernet kh\u1ecfi:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c \u0111\u1ee3t t\u0103ng \u0111i\u1ec7n \u00e1p v\u00e0 s\u00e9t \u0111\u00e1nh<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ESD (x\u1ea3 t\u0129nh \u0111i\u1ec7n)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Qu\u00e1 t\u1ea3i d\u00f2ng \u0111i\u1ec7n trong qu\u00e1 tr\u00ecnh th\u01b0\u01a1ng l\u01b0\u1ee3ng PoE ho\u1eb7c kh\u1edfi \u0111\u1ed9ng c\u1ea5p \u0111i\u1ec7n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00e3o h\u00f2a t\u1eeb t\u00ednh \u1edf m\u1ee9c c\u00f4ng su\u1ea5t PoE++ cao <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/452786.htm\">C\u00e1c thi\u1ebft k\u1ebf ch\u1ea5t l\u01b0\u1ee3ng cao nh\u01b0 c\u00e1c module bi\u1ebfn \u00e1p SMT<\/a> LP82499ANL c\u1ee7a LINK-PP \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i ngay c\u1ea3 trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p ho\u1eb7c ngo\u00e0i tr\u1eddi kh\u1eafc nghi\u1ec7t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd396. Tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n to\u00e0n c\u1ea7u<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c \u0111\u1ea7y \u0111\u1ee7 v\u00e0 tu\u1ed5i th\u1ecd s\u1eed d\u1ee5ng d\u00e0i, c\u00e1c b\u1ed9 bi\u1ebfn \u00e1p LAN PoE \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u00e1p \u1ee9ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>), c\u00e1c ch\u00e2n b\u1ed5 sung truy\u1ec1n \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) c\u00f9ng t\u00edn hi\u1ec7u d\u1eef li\u1ec7u, cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb nh\u01b0<\/strong> ti\u00eau chu\u1ea9n IEEE 802.3 (PoE, PoE+, PoE++)<\/p><\/li>\n\n\n\n<li><p><strong>y\u00eau c\u1ea7u c\u00e1ch ly UL v\u00e0 IEC<\/strong><\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/rohs-compliance-environmental-certification\/\" target=\"_blank\" rel=\"\"><strong>RoHS<\/strong><\/a><strong> ti\u00eau chu\u1ea9n m\u00f4i tr\u01b0\u1eddng RoHS \/ REACH<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c ch\u1ee9ng nh\u1eadn tu\u00e2n th\u1ee7 n\u00e0y \u0111\u1ea3m b\u1ea3o b\u1ed9 bi\u1ebfn \u00e1p LINK-PP t\u01b0\u01a1ng th\u00edch \u0111\u1ea7y \u0111\u1ee7 v\u1edbi c\u00e1c th\u01b0\u01a1ng hi\u1ec7u PHY h\u00e0ng \u0111\u1ea7u nh\u01b0 Broadcom, Intel v\u00e0 Marvell.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"608\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6a05d10c7b9a4065b32fc175ced353ea-1024x608.webp\" alt=\"Compliance with Global Standards\" class=\"wp-image-4650\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6a05d10c7b9a4065b32fc175ced353ea-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6a05d10c7b9a4065b32fc175ced353ea-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6a05d10c7b9a4065b32fc175ced353ea-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6a05d10c7b9a4065b32fc175ced353ea-18x12.webp 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6a05d10c7b9a4065b32fc175ced353ea.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd39 B\u1ea3ng t\u00f3m t\u1eaft: C\u00e1c ch\u1ee9c n\u0103ng c\u1ed1t l\u00f5i<\/h2>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 225px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"225\"><p>Ch\u1ee9c n\u0103ng<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>M\u00f4 t\u1ea3<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>L\u1ee3i \u00edch Ch\u00ednh<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"225\"><p>C\u00e1ch ly \u0111i\u1ec7n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u00e1ch r\u1eddi PHY kh\u1ecfi c\u00e1p \u0111\u1ec3 ng\u0103n ng\u1eeba xung \u0111i\u1ec7n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>B\u1ea3o v\u1ec7 m\u1ea1ch v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"225\"><p>Kh\u00e1ng nhi\u1ec5u<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u1ecdc nhi\u1ec5u \u0111i\u1ec7n t\u1eeb (EMI) v\u00e0 nhi\u1ec5u ch\u1ebf \u0111\u1ed9 chung<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ea3m b\u1ea3o vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u s\u1ea1ch v\u00e0 \u1ed5n \u0111\u1ecbnh<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"225\"><p>Ph\u1ed1i h\u1ee3p tr\u1edf kh\u00e1ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ed3ng b\u1ed9 tr\u1edf kh\u00e1ng gi\u1eefa PHY v\u00e0 c\u00e1p<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Gi\u1ea3m thi\u1ec3u ph\u1ea3n x\u1ea1 v\u00e0 t\u1ed5n hao t\u00edn hi\u1ec7u<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"225\"><p>Gh\u00e9p n\u1ed1i \u0111i\u1ec7n n\u0103ng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>K\u1ebft h\u1ee3p \u0111i\u1ec7n n\u0103ng v\u00e0 d\u1eef li\u1ec7u tr\u00ean c\u00f9ng m\u1ed9t c\u1eb7p d\u00e2y<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cho ph\u00e9p c\u1ea5p \u0111i\u1ec7n PoE<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"225\"><p>B\u1ea3o v\u1ec7<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ng\u0103n ch\u1eb7n ESD, xung \u0111i\u1ec7n v\u00e0 qu\u00e1 nhi\u1ec7t<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>K\u00e9o d\u00e0i tu\u1ed5i th\u1ecd thi\u1ebft b\u1ecb<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"225\"><p>Tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u00e1p \u1ee9ng ti\u00eau chu\u1ea9n IEEE v\u00e0 ti\u00eau chu\u1ea9n an to\u00e0n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c v\u00e0 \u0111\u1ed9 tin c\u1eady<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd39 K\u1ebft Lu\u1eadn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c b\u1ed9 bi\u1ebfn \u00e1p LAN PoE l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 h\u1ed7 tr\u1ee3 v\u00f4 h\u00ecnh nh\u01b0ng thi\u1ebft y\u1ebfu cho giao ti\u1ebfp Ethernet hi\u1ec7u qu\u1ea3, \u0111\u00e1ng tin c\u1eady v\u00e0 an to\u00e0n.<br>Nh\u1edd t\u00edch h\u1ee3p c\u00e1ch ly \u0111i\u1ec7n, l\u1ecdc t\u00edn hi\u1ec7u v\u00e0 gh\u00e9p n\u1ed1i \u0111i\u1ec7n n\u0103ng trong m\u1ed9t thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn, ch\u00fang cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng truy\u1ec1n \u0111\u1ed3ng th\u1eddi c\u1ea3 d\u1eef li\u1ec7u v\u00e0 \u0111i\u1ec7n n\u0103ng m\u00e0 kh\u00f4ng ph\u1ea3i hy sinh b\u1ea5t k\u1ef3 y\u1ebfu t\u1ed1 n\u00e0o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>LINK-PP<\/strong>, v\u1edbi nhi\u1ec1u th\u1eadp k\u1ef7 kinh nghi\u1ec7m trong l\u0129nh v\u1ef1c linh ki\u1ec7n t\u1eeb t\u00ednh, cung c\u1ea5p <strong>c\u00e1c b\u1ed9 bi\u1ebfn \u00e1p LAN PoE t\u00f9y ch\u1ec9nh v\u00e0 \u0111\u1ea7u n\u1ed1i RJ45 t\u00edch h\u1ee3p<\/strong> \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u kh\u1eaft khe nh\u1ea5t v\u1ec1 hi\u1ec7u n\u0103ng v\u00e0 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n \u2014 t\u1eeb \u0111\u00f3 l\u00e0m n\u1ec1n t\u1ea3ng cho c\u00e1c h\u1ec7 th\u1ed1ng Ethernet c\u1ee7a b\u1ea1n trong th\u1ebf h\u1ec7 thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i ti\u1ebfp theo.<\/p>","protected":false},"excerpt":{"rendered":"<p>Kh\u00e1m ph\u00e1 c\u00e1c ch\u1ee9c n\u0103ng thi\u1ebft y\u1ebfu c\u1ee7a bi\u1ebfn \u00e1p LAN PoE v\u00e0 c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n t\u1eeb t\u00ednh LINK-PP \u0111\u1ea3m b\u1ea3o ngu\u1ed3n \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh c\u0169ng nh\u01b0 vi\u1ec7c truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u Ethernet t\u1ed1c \u0111\u1ed9 cao.<\/p>","protected":false},"author":1,"featured_media":4651,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[23,24],"class_list":["post-4652","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-link-pp-lan-transformers","tag-link-pp"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4652","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=4652"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4652\/revisions"}],"predecessor-version":[{"id":10998,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4652\/revisions\/10998"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/4651"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=4652"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=4652"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=4652"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}