{"id":4662,"date":"2025-10-21T11:12:00","date_gmt":"2025-10-21T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/link-pp-poe-rj45-connectors-for-ptz-cameras\/"},"modified":"2026-06-22T06:10:13","modified_gmt":"2026-06-22T06:10:13","slug":"link-pp-poe-rj45-connectors-for-ptz-cameras","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/link-pp-poe-rj45-connectors-for-ptz-cameras","title":{"rendered":"C\u00e1ch C\u00e1c B\u1ed9 \u0110\u1ea5u N\u1ed1i RJ45 H\u1ed7 Tr\u1ee3 M\u1ea1ng Camera PTZ \u0110\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\/1c8bbc373a1f4d319e67acfc4e120af8.webp\" alt=\"LINK-PP RJ45 Connectors for PTZ Cameras\" class=\"wp-image-4658\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1c8bbc373a1f4d319e67acfc4e120af8.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1c8bbc373a1f4d319e67acfc4e120af8-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1c8bbc373a1f4d319e67acfc4e120af8-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1c8bbc373a1f4d319e67acfc4e120af8-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1c8bbc373a1f4d319e67acfc4e120af8-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c camera IP PTZ (quay \u2013 nghi\u00eang \u2013 ph\u00f3ng to)<\/strong> d\u1ef1a v\u00e0o Ethernet kh\u00f4ng ch\u1ec9 \u0111\u1ec3 truy\u1ec1n video v\u00e0 \u0111i\u1ec1u khi\u1ec3n, m\u00e0 c\u00f2n \u0111\u1ec3 cung c\u1ea5p \u0111i\u1ec7n th\u00f4ng qua <strong>PoE<\/strong>. C\u1ed5ng RJ45 nh\u1ecf\u2014th\u01b0\u1eddng l\u00e0 lo\u1ea1i \u201c<strong>MagJack<\/strong>\u201d t\u00edch h\u1ee3p bi\u1ebfn \u00e1p\u2014l\u00e0 c\u1ed5ng \u0111i\u1ec7n v\u00e0 c\u01a1 h\u1ecdc gi\u1eef cho to\u00e0n b\u1ed9 k\u1ebft n\u1ed1i n\u00e0y \u1ed5n \u0111\u1ecbnh. C\u00e1c bi\u1ebfn \u00e1p b\u00ean trong, l\u1edbp ch\u1eafn \u0111i\u1ec7n t\u1eeb, m\u1ea1 l\u1edbp kim lo\u1ea1i tr\u00ean ch\u00e2n c\u1eafm, v\u00e0 ngay c\u1ea3 c\u00e1ch n\u00f3 n\u1ed1i mass v\u1edbi khung v\u1ecf \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn d\u1ef1 tr\u1eef c\u00f4ng su\u1ea5t, kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec5u EMI\/ESD, \u0111\u1ed9 b\u1ec1n tr\u01b0\u1edbc xung \u0111i\u1ec7n \u00e1p v\u00e0 \u0111\u1ed9 b\u1ec1n ngo\u00e0i tr\u1eddi. N\u00f3i c\u00e1ch kh\u00e1c, vi\u1ec7c ch\u1ecdn \u0111\u00fang <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17492-integrated-rj45-connector.htm\">B\u1ed9 n\u1ed1i RJ45<\/a> l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady c\u1ee7a camera PTZ.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u27a1\ufe0f Th\u1ef1c t\u1ebf RJ45 t\u00edch h\u1ee3p bi\u1ebfn \u00e1p l\u00e0m g\u00ec<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u00ecn s\u01a1 qua, \u201c<strong>RJ45<\/strong>\u201d th\u01b0\u1eddng \u0111\u1ec1 c\u1eadp \u0111\u1ebfn <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-17542-8p8c-rj45-jack.htm\">\u0111\u1ea7u n\u1ed1i m\u00f4-\u0111un 8P8C<\/a> d\u00f9ng cho Ethernet. Trong c\u00e1c camera PTZ v\u00e0 NVR, \u0111\u00e2y th\u01b0\u1eddng l\u00e0 m\u1ed9t <strong>MagJack<\/strong>: \u0111\u1ea7u n\u1ed1i c\u00f3 l\u1edbp ch\u1eafn t\u00edch h\u1ee3p bi\u1ebfn \u00e1p c\u00e1ch ly v\u00e0 cu\u1ed9n kh\u00e1ng ch\u1ebf \u0111\u1ed9 chung. C\u00e1c bi\u1ebfn \u00e1p cung c\u1ea5p c\u00e1ch ly galvanic (th\u01b0\u1eddng kho\u1ea3ng 1500 Vrms, th\u01b0\u1eddng \u0111\u01b0\u1ee3c ghi r\u00f5 l\u00e0 2250 V DC trong 60 gi\u00e2y trong <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/file\/datasheet\/lpjk9492ahnl%2010g%20poe%2B%20-drawing.pdf\">b\u1ea3ng d\u1eef li\u1ec7u k\u1ef9 thu\u1eadt<\/a>), gi\u1eef t\u00edn hi\u1ec7u vi sai s\u1ea1ch \u1edf t\u1ed1c \u0111\u1ed9 Gigabit v\u00e0 \u0111a Gigabit, \u0111\u1ed3ng th\u1eddi d\u1eabn d\u00f2ng \u0111i\u1ec7n PoE m\u1ed9t chi\u1ec1u qua \u0111i\u1ec3m gi\u1eefa c\u1ee7a bi\u1ebfn \u00e1p trong khi d\u1eef li\u1ec7u \u0111i qua c\u00e1c c\u1eb7p d\u00e2y. Vi\u1ec7c t\u00edch h\u1ee3p n\u00e0y l\u00e0m gi\u1ea3m \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a m\u1ea1ch in PCB v\u00e0 c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n t\u00ednh t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n t\u1eeb EMC.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u0169ng quan tr\u1ecdng kh\u00f4ng k\u00e9m: \u0111\u1ea7u n\u1ed1i RJ45 h\u1edf tr\u00ean m\u1ea1ch in PCB kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ecbt k\u00edn ch\u1ed1ng th\u1eddi ti\u1ebft. <strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1eddi ti\u1ebft th\u1ef1c s\u1ef1 \u0111\u1ea1t chu\u1ea9n IP66\/67<\/strong> \u0111\u1ebfn t\u1eeb thi\u1ebft k\u1ebf v\u1ecf b\u1ecdc v\u00e0 c\u00e1c ph\u1ee5 ki\u1ec7n \u0111\u01b0\u1ee3c b\u1ecbt k\u00edn (v\u00ed d\u1ee5: \u0111\u1ea7u n\u1ed1i RJ45 d\u1ea1ng \u0111\u1ea9y\u2013r\u00fat xuy\u00ean qua v\u1ecf cho camera dome ngo\u00e0i tr\u1eddi), ch\u1ee9 kh\u00f4ng ch\u1ec9 nh\u1edd ri\u00eang \u0111\u1ea7u n\u1ed1i RJ45\u2014nh\u01b0 minh h\u1ecda trong <strong><em><mark data-color=\"var(--qc-color2)\" style=\"background-color: var(--qc-color2); color: inherit;\">b\u1ea3ng d\u1eef li\u1ec7u k\u1ef9 thu\u1eadt AXIS P5655\u2011E (2021)<\/mark><\/em><\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Theo b\u1ea3n t\u1ed5ng quan PoE n\u0103m 2019 c\u1ee7a Li\u00ean minh Ethernet, c\u00f4ng su\u1ea5t s\u1eb5n c\u00f3 \u0111i\u1ec3n h\u00ecnh t\u1ea1i <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/poe-pd-powered-device-guide\/\"><strong>thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n (PD)<\/strong><\/a> l\u00e0 <strong>12,95 W (Lo\u1ea1i 1), 25,5 W (Lo\u1ea1i 2), l\u00ean \u0111\u1ebfn 51 W (Lo\u1ea1i 3) v\u00e0 l\u00ean \u0111\u1ebfn 71,3 W (Lo\u1ea1i 4)<\/strong>. C\u00e1c gi\u00e1 tr\u1ecb n\u00e0y \u0111\u00e3 t\u00ednh \u0111\u1ebfn t\u1ed5n th\u1ea5t c\u00e1p theo ti\u00eau chu\u1ea9n; c\u00e1c h\u1ec7 th\u1ed1ng l\u1eafp \u0111\u1eb7t th\u1ef1c t\u1ebf v\u1eabn c\u1ea7n d\u1ef1 ph\u00f2ng th\u00eam.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9e3cccc1030b41f6b6f0740318ef9fd1-1024x683.png\" alt=\"What an RJ45 with integrated magnetics actually does\" class=\"wp-image-4659\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9e3cccc1030b41f6b6f0740318ef9fd1-1024x683.png 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9e3cccc1030b41f6b6f0740318ef9fd1-300x200.png 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9e3cccc1030b41f6b6f0740318ef9fd1-768x512.png 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9e3cccc1030b41f6b6f0740318ef9fd1-18x12.png 18w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9e3cccc1030b41f6b6f0740318ef9fd1.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u27a1\ufe0f C\u00e1c l\u1edbp PoE v\u00e0 qu\u1ea3n l\u00fd ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t cho camera PTZ<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c camera PTZ<\/strong> l\u00e0 t\u1ea3i \u0111\u1ed9ng: \u0111\u1ed9ng c\u01a1 quay \u2013 nghi\u00eang \u2013 ph\u00f3ng to, b\u1ed9 gia nhi\u1ec7t cho kh\u00ed h\u1eadu l\u1ea1nh v\u00e0 \u0111\u00e8n h\u1ed3ng ngo\u1ea1i \u0111\u1ec1u c\u00f3 th\u1ec3 g\u00e2y ra c\u00e1c \u0111\u1ec9nh d\u00f2ng \u0111i\u1ec7n. Vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u00fang <strong>l\u1edbp PoE v\u00e0 thi\u1ebft k\u1ebf d\u1ef1 ph\u00f2ng c\u00f4ng su\u1ea5t<\/strong> gi\u00fap tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng s\u1ee5t \u00e1p, kh\u1edfi \u0111\u1ed9ng l\u1ea1i ho\u1eb7c c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng b\u1ea5t th\u01b0\u1eddng d\u1ec5 th\u1ea5y nh\u01b0 m\u1ea5t khung h\u00ecnh.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ieee-802-3af-poe-standard-explained\/\" target=\"_blank\" rel=\"\"><strong>IEEE 802.3af<\/strong><\/a><strong> (Lo\u1ea1i 1)<\/strong>: C\u00f4ng su\u1ea5t danh \u0111\u1ecbnh c\u1ee7a thi\u1ebft b\u1ecb cung c\u1ea5p \u0111i\u1ec7n (PSE) l\u00e0 15,4 W; thi\u1ebft b\u1ecb nh\u1eadn \u0111i\u1ec7n (PD) t\u1ed1i \u0111a kho\u1ea3ng 12,95 W.<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ieee-802-3at-power-over-ethernet-plus-standard\/\" target=\"_blank\" rel=\"\"><strong>IEEE 802.3at<\/strong><\/a><strong> (Lo\u1ea1i 2, PoE+)<\/strong>: Thi\u1ebft b\u1ecb cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng (PSE) 30 W; Thi\u1ebft b\u1ecb nh\u1eadn n\u0103ng l\u01b0\u1ee3ng (PD) l\u00ean \u0111\u1ebfn 25,5 W.<\/p><\/li>\n\n\n\n<li><p><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-ieee-802-3-bt-poe-standard\/\" target=\"_blank\" rel=\"\"><strong>IEEE 802.3bt<\/strong><\/a><strong> (PoE 4 c\u1eb7p d\u00e2y)<\/strong>:<\/p>\n<ul class=\"wp-block-list\">\n<li><p>Lo\u1ea1i 3: PSE l\u00ean \u0111\u1ebfn 60 W; PD l\u00ean \u0111\u1ebfn ~51 W.<\/p><\/li>\n\n\n\n<li><p>Lo\u1ea1i 4: PSE 90\u2013100 W; PD l\u00ean \u0111\u1ebfn ~71,3 W.<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c gi\u00e1 tr\u1ecb PD v\u00e0 h\u00e0nh vi ph\u00e2n l\u1edbp n\u00e0y \u0111\u01b0\u1ee3c t\u00f3m t\u1eaft trong b\u1ea3n t\u1ed5ng quan v\u1ec1 PoE n\u0103m 2019 c\u1ee7a Ethernet Alliance. Khi \u0111\u00e1nh gi\u00e1 ph\u1ea1m vi \u1ee9ng d\u1ee5ng cho camera PTZ c\u00f3 b\u1ed9 gia nhi\u1ec7t ho\u1eb7c \u0111\u01b0\u1eddng c\u00e1p d\u00e0i, h\u00e3y ch\u1ecdn l\u1edbp cao h\u01a1n nhu c\u1ea7u tr\u1ea1ng th\u00e1i \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 h\u1ea5p th\u1ee5 c\u00e1c \u0111\u1ec9nh xung v\u00e0 t\u1ed5n th\u1ea5t tr\u00ean c\u00e1p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u1ef1c h\u00e0nh khuy\u1ebfn ngh\u1ecb: coi \u0111\u01b0\u1eddng d\u1eabn d\u00f2ng \u0111i\u1ec7n <strong>qua \u0111i\u1ec3m gi\u1eefa (center-tap)<\/strong> and <strong>m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t<\/strong> l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t. \u0110\u1ea3m b\u1ea3o r\u1eb1ng <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/491473.htm\">MagJack<\/a> \u0111\u1ea7u n\u1ed1i \u0111\u01b0\u1ee3c x\u1ebfp h\u1ea1ng ph\u00f9 h\u1ee3p v\u1edbi d\u00f2ng \u0111i\u1ec7n PoE++ d\u1ef1 ki\u1ebfn v\u00e0 nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng xung quanh, ch\u1ee9 kh\u00f4ng ch\u1ec9 v\u1edbi t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u danh \u0111\u1ecbnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u27a1\ufe0f Xung, ESD v\u00e0 n\u1ed1i \u0111\u1ea5t: ng\u0103n x\u1ebfp <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/emc-ems-emi-electromagnetic-compatibility-susceptibility-interference\/\">, 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.<\/a> \u0111\u1ed9 tin c\u1eady<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1p ngo\u00e0i tr\u1eddi c\u00f3 th\u1ec3 t\u00edch l\u0169y \u0111i\u1ec7n t\u00edch t\u0129nh v\u00e0 ch\u1ecbu c\u00e1c xung c\u1ea3m \u1ee9ng. M\u1ed9t tri\u1ec3n khai RJ45 b\u1ec1n b\u1ec9 l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng m\u00e0 <strong>tr\u1edf n\u00ean r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi \u0111\u1ed9 tin c\u1eady t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng.<\/strong>, <strong>linh ki\u1ec7n t\u1eeb t\u00ednh<\/strong>, <strong>b\u1ea3o v\u1ec7 b\u1ea3ng m\u1ea1ch in (PCB)<\/strong>, and <strong>v\u1ecf b\u1ecdc<\/strong> v\u00e0 vi\u1ec7c n\u1ed1i \u0111\u1eb3ng th\u1ebf (bonding) ph\u1ed1i h\u1ee3p \u0111\u1ed3ng b\u1ed9 v\u1edbi nhau.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec5u ESD (IEC 61000\u20114\u20112): <\/strong>C\u1ea5p 4 y\u00eau c\u1ea7u \u00b18 kV ti\u1ebfp x\u00fac v\u00e0 \u00b115 kV ph\u00f3ng \u0111i\u1ec7n trong kh\u00f4ng kh\u00ed.<\/p><\/li>\n\n\n\n<li><p><strong>Kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec5u xung (IEC 61000\u20114\u20115):<\/strong> C\u00e1c li\u00ean k\u1ebft c\u00f4ng nghi\u1ec7p\/ngo\u00e0i tr\u1eddi c\u00f3 th\u1ec3 ch\u1ecbu xung ch\u00eanh l\u1ec7ch 1\u20132 kV v\u00e0 xung ch\u1ebf \u0111\u1ed9 chung 2\u20134 kV, t\u00f9y thu\u1ed9c v\u00e0o c\u00e1ch l\u1eafp \u0111\u1eb7t v\u00e0 l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c ph\u01b0\u01a1ng ph\u00e1p thi\u1ebft k\u1ebf c\u1ed5ng Ethernet trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1eb7t c\u00e1c m\u1ea3ng TVS c\u00f3 \u0111i\u1ec7n dung th\u1ea5p \u1edf ph\u00eda PHY c\u1ee7a bi\u1ebfn \u00e1p gh\u00e9p (magnetics), v\u1edbi d\u00e2y n\u1ed1i r\u1ea5t ng\u1eafn nh\u1eb1m gi\u1ea3m thi\u1ec3u \u0111i\u1ec7n c\u1ea3m v\u00e0 b\u1ea3o v\u1ec7 PHY kh\u1ecfi c\u00e1c xung nhanh xuy\u00ean qua bi\u1ebfn \u00e1p, theo <a href=\"https:\/\/www.ti.com\/lit\/pdf\/slvae50\" target=\"_blank\" rel=\"noopener noreferrer nofollow\" class=\"link\"><em>ghi ch\u00fa \u1ee9ng d\u1ee5ng c\u1ee7a Texas Instruments v\u1ec1 b\u1ea3o v\u1ec7 c\u1ed5ng Ethernet kh\u1ecfi xung (2019)<\/em><\/a>.<\/p><\/li>\n\n\n\n<li><p>Ch\u1ecdn c\u00e1c thi\u1ebft b\u1ecb TVS c\u00f3 x\u1ebfp h\u1ea1ng ESD theo IEC 61000\u20114\u20112 v\u00e0 d\u00f2ng xung 8\/20 \u00b5s ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng s\u1eed d\u1ee5ng. <em>B\u00e0i vi\u1ebft k\u1ef9 thu\u1eadt v\u1ec1 thi\u1ebft k\u1ebf TVS cho Ethernet Gigabit (2023)<\/em> t\u00f3m t\u1eaft c\u00e1c y\u1ebfu t\u1ed1 c\u00e2n nh\u1eafc khi l\u1ef1a ch\u1ecdn v\u00e0 b\u1ed1 tr\u00ed thi\u1ebft b\u1ecb TVS c\u00f3 \u0111i\u1ec7n dung th\u1ea5p.<\/p><\/li>\n\n\n\n<li><p>N\u1ed1i v\u1ecf ch\u1eafn RJ45 v\u1edbi khung m\u00e1y\/\u0111\u1ea5t \u0111\u1ec3 t\u1ea1o \u0111\u01b0\u1eddng d\u1eabn tr\u1edf v\u1ec1 360 \u0111\u1ed9 cho d\u00f2ng RF v\u00e0 d\u00f2ng xung, gi\u1ea3m ti\u00eam nhi\u1ec5u v\u00e0o \u0111\u1ea5t t\u00edn hi\u1ec7u, nh\u01b0 \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb trong <em><mark data-color=\"var(--qc-color2)\" style=\"background-color: var(--qc-color2); color: inherit;\">S\u1ed5 tay L\u1eadp k\u1ebf ho\u1ea1ch v\u00e0 L\u1eafp \u0111\u1eb7t M\u00f4i tr\u01b0\u1eddng Truy\u1ec1n th\u00f4ng EtherNet\/IP c\u1ee7a ODVA (2020)<\/mark><\/em>.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u27a1\ufe0f C\u01a1 h\u1ecdc ngo\u00e0i tr\u1eddi: ni\u00eam phong, nhi\u1ec7t \u0111\u1ed9 v\u00e0 m\u1ea1<\/h2>\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\/f5f079349bfa45949f95097a8d231c70.webp\" alt=\"PoE Magjack for Reliable PTZ Camera Systems\" class=\"wp-image-4660\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f5f079349bfa45949f95097a8d231c70.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f5f079349bfa45949f95097a8d231c70-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f5f079349bfa45949f95097a8d231c70-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f5f079349bfa45949f95097a8d231c70-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f5f079349bfa45949f95097a8d231c70-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ed5ng Ethernet c\u1ee7a camera PTZ ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed3ng th\u1eddi v\u1edbi <strong>m\u01b0a, b\u1ee5i, dao \u0111\u1ed9ng nhi\u1ec7t \u0111\u1ed9 v\u00e0 rung \u0111\u1ed9ng<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Vi\u1ec7c ni\u00eam phong \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i giao di\u1ec7n v\u1ecf b\u1ecdc, ch\u1ee9 kh\u00f4ng ch\u1ec9 nh\u1edd v\u00e0o gi\u1eafc PCB ri\u00eang l\u1ebb. Nhi\u1ec1u camera PTZ ngo\u00e0i tr\u1eddi quy \u0111\u1ecbnh ph\u1ee5 ki\u1ec7n gi\u1eafc RJ45 ki\u1ec3u \u0111\u1ea9y\u2013k\u00e9o ho\u1eb7c \u0111\u1ea7u n\u1ed1i k\u00edn (sealed gland) \u0111\u1ec3 duy tr\u00ec ti\u00eau chu\u1ea9n IP66\/67 trong khi v\u1eabn cho ph\u00e9p b\u1ea3o tr\u00ec\u2014 <em><mark data-color=\"var(--qc-color2)\" style=\"background-color: var(--qc-color2); color: inherit;\">b\u1ea3ng d\u1eef li\u1ec7u k\u1ef9 thu\u1eadt AXIS P5655\u2011E (2021)<\/mark><\/em> minh h\u1ecda d\u1ea3i ti\u00eau chu\u1ea9n IP v\u00e0 d\u1ea3i nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng \u1edf c\u1ea5p \u0111\u1ed9 v\u1ecf b\u1ecdc khi \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t \u0111\u00fang theo h\u01b0\u1edbng d\u1eabn.<\/p><\/li>\n\n\n\n<li><p><strong>Nhi\u1ec7t \u0111\u1ed9<\/strong>: \u0110\u1ed1i v\u1edbi kh\u00ed h\u1eadu kh\u1eafc nghi\u1ec7t, h\u00e3y \u0111\u1ea3m b\u1ea3o d\u1ea3i nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a gi\u1eafc n\u1ed1i v\u00e0 c\u00e1c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 ph\u00f9 h\u1ee3p v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a camera (v\u00ed d\u1ee5: linh ki\u1ec7n ch\u1ecbu nhi\u1ec7t t\u1eeb \u221240 \u0111\u1ebfn +85 \u00b0C d\u00e0nh cho thi\u1ebft k\u1ebf c\u00f4ng nghi\u1ec7p).<\/p><\/li>\n\n\n\n<li><p><strong>M\u1ea1 v\u00e0 \u0111\u1ed9 b\u1ec1n<\/strong>: \u0110\u1ed9 d\u00e0y l\u1edbp m\u1ea1 v\u00e0ng tr\u00ean c\u00e1c ti\u1ebfp \u0111i\u1ec3m (v\u00ed d\u1ee5: 30\u201350 \u00b5in) gi\u00fap ch\u1ed1ng \u0103n m\u00f2n do rung \u0111\u1ed9ng (fretting corrosion) v\u00e0 duy tr\u00ec \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac th\u1ea5p d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a rung \u0111\u1ed9ng v\u00e0 \u0111\u1ed9 \u1ea9m.<\/p><\/li>\n\n\n\n<li><p><strong>V\u1ecf b\u1ecdc c\u00f3 l\u1edbp ch\u1eafn \u0111i\u1ec7n t\u1eeb v\u00e0 c\u01a1 ch\u1ebf gi\u1ea3m \u1ee9ng su\u1ea5t<\/strong>: S\u1eed d\u1ee5ng m\u1ed9t <a href=\"https:\/\/www.l-p.com\/products\/491473.htm\" target=\"_blank\" rel=\"\">gi\u1eafc c\u00f3 v\u1ecf kim lo\u1ea1i ch\u1eafn \u0111i\u1ec7n t\u1eeb<\/a> v\u00e0 \u0111\u1ea3m b\u1ea3o gi\u1ea3i ph\u00e1p gh\u00e9p n\u1ed1i cung c\u1ea5p c\u01a1 ch\u1ebf gi\u1ea3m \u1ee9ng su\u1ea5t cho v\u1ecf b\u1ecdc.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u27a1\ufe0f T\u00ednh t\u01b0\u01a1ng th\u00edch v\u00e0 b\u1ed1 tr\u00ed m\u1ea1ch gi\u1eefa PHY\/SoC<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i \u1ed5n \u0111\u1ecbnh \u1edf t\u1ed1c \u0111\u1ed9 1G\/2.5G\/5G:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Tu\u00e2n th\u1ee7 thi\u1ebft k\u1ebf tham kh\u1ea3o c\u1ee7a <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-phy-physical-layer-basics-explained\/\" target=\"_blank\" rel=\"\"><strong>PHY<\/strong><\/a><strong> nh\u00e0 cung c\u1ea5p <\/strong>v\u1ec1 vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ed9 bi\u1ebfn \u00e1p (magnetics) v\u00e0 m\u1ea1ng k\u1ebft cu\u1ed1i Bob-Smith.<\/p><\/li>\n\n\n\n<li><p>Duy tr\u00ec tr\u1edf kh\u00e1ng vi sai 100\u03a9, t\u1ed1i thi\u1ec3u h\u00f3a chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng d\u1eabn t\u1eeb PHY \u0111\u1ebfn gi\u1eafc n\u1ed1i v\u00e0 \u0111\u1ed3ng b\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ed9 d\u00e0i gi\u1eefa c\u00e1c c\u1eb7p d\u00e2y.<\/p><\/li>\n\n\n\n<li><p>X\u00e1c minh <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/insertion-loss-impact-on-rj45-magjack\/\" target=\"_blank\" rel=\"\"><strong>\u0111\u1ed9 ch\u00e8n<\/strong><\/a><strong>\/<\/strong><a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/rj45-connector-in-network-switch\/\" target=\"_blank\" rel=\"\"><strong>t\u1ed5n hao ph\u1ea3n h\u1ed3i<\/strong><\/a> v\u00e0 chuy\u1ec3n \u0111\u1ed5i ch\u1ebf \u0111\u1ed9, \u0111\u1ed3ng th\u1eddi th\u1ef1c hi\u1ec7n ki\u1ec3m tra t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n t\u1eeb (EMC) s\u01a1 b\u1ed9 ngay t\u1eeb giai \u0111o\u1ea1n \u0111\u1ea7u.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u27a1\ufe0f Danh s\u00e1ch ki\u1ec3m tra k\u1ef9 thu\u1eadt (d\u00e0nh cho c\u00e1c bu\u1ed5i r\u00e0 so\u00e1t thi\u1ebft k\u1ebf)<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>L\u1edbp c\u1ea5p ngu\u1ed3n PoE v\u00e0 d\u1ef1 ph\u00f2ng<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c nh\u1eadn <a href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ieee-802-3af-vs-ieee-802-3at-vs-ieee-802-3bt\/\" target=\"_blank\" rel=\"\">IEEE 802.3 af\/at\/bt<\/a> Lo\u1ea1i v\u00e0 ng\u00e2n s\u00e1ch thi\u1ebft b\u1ecb nh\u1eadn (PD); th\u00eam d\u1ef1 ph\u00f2ng cho c\u00e1c \u0111\u1ec9nh c\u00f4ng su\u1ea5t c\u1ee7a \u0111\u1ed9ng c\u01a1\/b\u1ed9 s\u01b0\u1edfi\/\u0111\u00e8n h\u1ed3ng ngo\u1ea1i.<\/p><\/li>\n\n\n\n<li><p>X\u00e1c minh d\u00f2ng \u0111i\u1ec7n t\u1ea1i \u0111i\u1ec3m gi\u1eefa (center-tap) c\u1ee7a MagJack v\u00e0 gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9 \u1edf \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng d\u1ef1 ki\u1ebfn.<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p><strong>C\u00e1ch ly v\u00e0 \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>M\u1ee9c c\u00e1ch ly ghi trong b\u1ea3ng d\u1eef li\u1ec7u \u2265<strong>1500 Vrms<\/strong> (th\u01b0\u1eddng l\u00e0 2250 VDC\/60 gi\u00e2y).<\/p><\/li>\n\n\n\n<li><p>T\u1ed5n hao ph\u1ea3n x\u1ea1\/t\u1ed5n hao ch\u00e8n v\u00e0 t\u1ef7 s\u1ed1 lo\u1ea1i b\u1ecf ch\u1ebf \u0111\u1ed9 chung (CMR) ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c li\u00ean k\u1ebft t\u1ed1c \u0111\u1ed9 1 Gbps tr\u1edf l\u00ean.<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p><strong>B\u1ea3o v\u1ec7 ch\u1ed1ng t\u0129nh \u0111i\u1ec7n (ESD)\/ch\u1ed1ng qu\u00e1 \u00e1p do s\u00e9t \u0111\u00e1nh<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>M\u1ea3ng diod b\u1ea3o v\u1ec7 TVS c\u00f3 \u0111i\u1ec7n dung th\u1ea5p \u1edf ph\u00eda PHY c\u1ee7a b\u1ed9 bi\u1ebfn \u00e1p gh\u00e9p n\u1ed1i (magnetics); chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng d\u1eabn \u0111\u01b0\u1ee3c t\u1ed1i thi\u1ec3u h\u00f3a.<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ea1t m\u1ee9c ESD IEC 61000\u20114\u20112 C\u1ea5p 4 v\u00e0 c\u00e1c m\u1ee9c \u0111\u00e1nh gi\u00e1 ch\u1ed1ng qu\u00e1 \u00e1p do s\u00e9t IEC 61000\u20114\u20115 ph\u00f9 h\u1ee3p v\u1edbi ph\u00e2n lo\u1ea1i v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t c\u1ee7a b\u1ea1n.<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p><strong>Vi\u1ec7c che ch\u1eafn v\u00e0 n\u1ed1i \u0111\u1eb3ng th\u1ebf<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>V\u1ecf kim lo\u1ea1i c\u00f3 l\u1edbp che ch\u1eafn; \u0111\u01b0\u1eddng d\u1eabn n\u1ed1i gi\u1eefa l\u1edbp che ch\u1eafn v\u00e0 khung m\u00e1y \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng.<\/p><\/li>\n\n\n\n<li><p>V\u1ecf bao ngo\u00e0i \u0111\u1ea3m b\u1ea3o t\u00ednh li\u00ean t\u1ee5c c\u1ee7a l\u1edbp che ch\u1eafn tr\u00ean to\u00e0n b\u1ed9 360\u00b0.<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p><strong>M\u00f4i tr\u01b0\u1eddng<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>D\u1ea3i nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a linh ki\u1ec7n ph\u00f9 h\u1ee3p v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a camera (v\u00ed d\u1ee5: \u221240 \u0111\u1ebfn +85 \u00b0C).<\/p><\/li>\n\n\n\n<li><p>\u0110\u1ed9 d\u00e0y l\u1edbp m\u1ea1 ti\u1ebfp x\u00fac \u0111\u1ea7y \u0111\u1ee7 v\u00e0 kh\u1ea3 n\u0103ng gi\u1eef c\u1ed1 \u0111\u1ecbnh c\u01a1 h\u1ecdc \u0111\u1ea1t y\u00eau c\u1ea7u.<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p><strong>S\u1ef1 c\u0103n ch\u1ec9nh PHY<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>B\u1ed9 bi\u1ebfn \u00e1p gh\u00e9p n\u1ed1i (magnetics) t\u01b0\u01a1ng th\u00edch v\u1edbi thi\u1ebft k\u1ebf tham kh\u1ea3o c\u1ee7a PHY; c\u00e1c gi\u00e1 tr\u1ecb m\u1ea1ch Bob\u2011Smith \u0111\u00fang.<\/p><\/li>\n\n\n\n<li><p>Thi\u1ebft k\u1ebf tuy\u1ebfn d\u1eabn vi sai 100 \u03a9 s\u1ea1ch s\u1ebd v\u00e0 c\u00e2n b\u1eb1ng c\u1eb7p d\u00e2y ch\u00ednh x\u00e1c.<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u27a1\ufe0f Danh s\u00e1ch ki\u1ec3m tra mua h\u00e0ng (d\u00e0nh cho ng\u01b0\u1eddi mua v\u00e0 qu\u1ea3n l\u00fd ch\u01b0\u01a1ng tr\u00ecnh)<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Ti\u00eau chu\u1ea9n v\u00e0 x\u1ebfp h\u1ea1ng<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>H\u1ed7 tr\u1ee3 PoE theo ti\u00eau chu\u1ea9n IEEE \u0111\u01b0\u1ee3c n\u00eau r\u00f5 (af\/at\/bt) v\u00e0 c\u00e1c \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n k\u00e8m \u0111i\u1ec1u ki\u1ec7n (nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng, \u0394T).<\/p><\/li>\n\n\n\n<li><p>C\u00e1c tuy\u00ean b\u1ed1 v\u1ec1 c\u00e1ch ly v\u00e0 t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n t\u1eeb (EMC) k\u00e8m gi\u00e1 tr\u1ecb c\u1ee5 th\u1ec3 v\u00e0 ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m (v\u00ed d\u1ee5: 2250 VDC\/60 gi\u00e2y, IEC 61000\u20114\u20112\/\u20114\u20115).<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p><strong>S\u1eb5n s\u00e0ng ho\u1ea1t \u0111\u1ed9ng trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ecbnh m\u1ee9c nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng, kh\u1ea3 n\u0103ng che ch\u1eafn, \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1 v\u00e0 m\u1ecdi tuy\u00ean b\u1ed1 tu\u00e2n th\u1ee7 li\u00ean quan.<\/p><\/li>\n\n\n\n<li><p>Ph\u00e1t bi\u1ec3u r\u00f5 r\u00e0ng r\u1eb1ng vi\u1ec7c ni\u00eam phong ch\u1ed1ng n\u01b0\u1edbc (IP) ph\u1ee5 thu\u1ed9c v\u00e0o v\u1ecf bao ngo\u00e0i\/ph\u1ee5 ki\u1ec7n \u0111i k\u00e8m.<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p><strong>V\u00f2ng \u0111\u1eddi s\u1ea3n ph\u1ea9m v\u00e0 kh\u1ea3 n\u0103ng cung \u1ee9ng<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>T\u00ednh li\u00ean t\u1ee5c trong cung \u1ee9ng, c\u00e1c l\u1ef1a ch\u1ecdn thay th\u1ebf c\u00f3 t\u01b0\u01a1ng th\u00edch ch\u00e2n c\u1eafm, kh\u1ea3 n\u0103ng gi\u00e1m s\u00e1t t\u1ed3n kho v\u00e0 cam k\u1ebft v\u1ec1 th\u1eddi gian giao h\u00e0ng.<\/p><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p><strong>T\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt v\u00e0 h\u1ed7 tr\u1ee3<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li><p>S\u01a1 \u0111\u1ed3 ch\u00e2n c\u1eafm, footprint tham kh\u1ea3o, m\u00f4 h\u00ecnh 3D v\u00e0 kh\u1ea3 n\u0103ng cung c\u1ea5p m\u1eabu \u0111\u1ec3 ki\u1ec3m tra s\u1edbm.<\/p><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u27a1\ufe0f T\u1ed5ng h\u1ee3p to\u00e0n b\u1ed9 y\u1ebfu t\u1ed1<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t <strong>camera PTZ<\/strong> \u0111\u00e1ng tin c\u1eady kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t c\u00e1p v\u00e0 m\u1ed9t c\u1ed5ng. \u0110\u00f3 l\u00e0 m\u1ed9t giao di\u1ec7n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf k\u1ef9 l\u01b0\u1ee1ng, n\u01a1i <strong>b\u1ed9 bi\u1ebfn \u00e1p gh\u00e9p n\u1ed1i t\u00edch h\u1ee3p trong c\u1ed5ng RJ45<\/strong>, <strong>vi\u1ec7c n\u1ed1i \u0111\u1eb3ng th\u1ebf l\u1edbp che ch\u1eafn<\/strong>, <strong>\u0111\u01b0\u1eddng d\u1eabn d\u00f2ng \u0111i\u1ec7n PoE<\/strong>, and <strong>t\u00edch h\u1ee3p c\u01a1 kh\u00ed<\/strong> ph\u1ed1i h\u1ee3p c\u00f9ng nhau \u0111\u1ec3 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u s\u1ea1ch v\u00e0 c\u1ea5p ngu\u1ed3n \u1ed5n \u0111\u1ecbnh\u2014ngay c\u1ea3 khi g\u1eb7p <a target=\"_self\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/esd-protection-link-pp-smart-factory-transceivers-rj45-cage\/\">ESD<\/a> s\u00e9t \u0111\u00e1nh, xung \u0111\u1ed9ng c\u01a1 v\u00e0 \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft kh\u1eafc nghi\u1ec7t. H\u00e3y x\u00e2y d\u1ef1ng quy\u1ebft \u0111\u1ecbnh l\u1ef1a ch\u1ecdn d\u1ef1a tr\u00ean <strong>c\u00e1c l\u1edbp c\u1ea5p ngu\u1ed3n PoE theo ti\u00eau chu\u1ea9n IEEE<\/strong>, <strong>x\u00e1c minh c\u00e1ch ly v\u00e0 t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n t\u1eeb (EMC)<\/strong> t\u1ea1i \u0111\u1ea7u n\u1ed1i v\u00e0 b\u1ea3ng m\u1ea1ch in (PCB), \u0111\u1ed3ng th\u1eddi coi vi\u1ec7c ni\u00eam phong ch\u1ed1ng n\u01b0\u1edbc ngo\u00e0i tr\u1eddi l\u00e0 thu\u1ed9c t\u00ednh c\u1ee7a v\u1ecf bao ngo\u00e0i\/ph\u1ee5 ki\u1ec7n \u0111i k\u00e8m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang x\u00e1c th\u1ef1c thi\u1ebft k\u1ebf camera PTZ ho\u1eb7c c\u1eadp nh\u1eadt l\u1ea1i danh s\u00e1ch v\u1eadt t\u01b0 (BOM), ch\u00fang t\u00f4i c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 b\u1ea1n so s\u00e1nh <strong>c\u00e1c l\u1edbp c\u1ea5p ngu\u1ed3n PoE<\/strong>, <strong>th\u00f4ng s\u1ed1 c\u00e1ch ly<\/strong>, and <strong>c\u00e1c t\u00f9y ch\u1ecdn EMC<\/strong> t\u1eebng m\u1ee5c m\u1ed9t v\u1edbi c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/message.htm\">Li\u00ean h\u1ec7 LINK\u2011PP<\/a> \u0111\u1ec3 y\u00eau c\u1ea7u m\u1eabu th\u1eed ho\u1eb7c \u0111\u00e1nh gi\u00e1 nhanh th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt cho danh s\u00e1ch ng\u1eafn c\u00e1c \u0111\u1ea7u n\u1ed1i RJ45\/MagJack c\u1ee7a b\u1ea1n.<\/p>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u c\u00e1ch c\u00e1c b\u1ed9 \u0111\u1ea5u n\u1ed1i RJ45, gi\u1ea3i ph\u00e1p PoE v\u00e0 bi\u1ebfn \u00e1p LAN c\u1ee7a LINK-PP n\u00e2ng cao hi\u1ec7u su\u1ea5t camera PTZ, cung c\u1ea5p ngu\u1ed3n \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh, d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao v\u00e0 b\u1ea3o v\u1ec7 ch\u1ed1ng nhi\u1ec5u \u0111i\u1ec7n t\u1eeb (EMI) cho c\u00e1c m\u1ea1ng gi\u00e1m s\u00e1t th\u00f4ng minh.<\/p>","protected":false},"author":1,"featured_media":4661,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[22,24,25],"class_list":["post-4662","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-integrated-rj45-connectors","tag-link-pp","tag-modular-jack"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4662","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=4662"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4662\/revisions"}],"predecessor-version":[{"id":10995,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4662\/revisions\/10995"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/4661"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=4662"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=4662"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=4662"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}