{"id":2856,"date":"2026-03-26T00:00:00","date_gmt":"2026-03-26T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/how-to-test-sfp-transceiver\/"},"modified":"2026-06-22T03:45:53","modified_gmt":"2026-06-22T03:45:53","slug":"how-to-test-sfp-transceiver","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-to-test-sfp-transceiver","title":{"rendered":"L\u00e0m c\u00e1ch ki\u1ec3m tra module SFP: H\u01b0\u1edbng d\u1eabn th\u1ef1c h\u00e0nh"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"628\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f21f9ac16b0b46149920e7df0180fc59.jpg\" alt=\"How to Test SFP Transceiver\" class=\"wp-image-2844\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f21f9ac16b0b46149920e7df0180fc59.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f21f9ac16b0b46149920e7df0180fc59-300x157.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f21f9ac16b0b46149920e7df0180fc59-1024x536.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f21f9ac16b0b46149920e7df0180fc59-768x402.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f21f9ac16b0b46149920e7df0180fc59-18x9.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i\u2014t\u1eeb trung t\u00e2m d\u1eef li\u1ec7u doanh nghi\u1ec7p \u0111\u1ebfn c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng vi\u1ec5n th\u00f4ng\u2014 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">SFP <\/a>B\u1ed9 thu ph\u00e1t (Small Form-factor Pluggable) l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n then ch\u1ed1t tr\u1ef1c ti\u1ebfp \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a li\u00ean k\u1ebft, t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng t\u1ed5ng th\u1ec3 c\u1ee7a m\u1ea1ng. Tuy nhi\u00ean, trong c\u00e1c tri\u1ec3n khai th\u1ef1c t\u1ebf, nhi\u1ec1u s\u1ef1 c\u1ed1 k\u1ebft n\u1ed1i\u2014ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1ea5t li\u00ean k\u1ebft ng\u1eaft qu\u00e3ng, t\u1ef7 l\u1ec7 l\u1ed7i bit cao ho\u1eb7c ho\u00e0n to\u00e0n m\u1ea5t li\u00ean k\u1ebft\u2014th\u01b0\u1eddng b\u1eaft ngu\u1ed3n t\u1eeb vi\u1ec7c ki\u1ec3m tra SFP kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7 ho\u1eb7c kh\u00f4ng \u0111\u00fang c\u00e1ch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00f3 l\u00e0 l\u00fd do v\u00ec sao vi\u1ec7c hi\u1ec3u c\u00e1ch ki\u1ec3m tra m\u1ed9t b\u1ed9 thu ph\u00e1t SFP gi\u1edd \u0111\u00e2y kh\u00f4ng c\u00f2n ch\u1ec9 l\u00e0 nhi\u1ec7m v\u1ee5 d\u00e0nh ri\u00eang cho k\u1ef9 s\u01b0 ph\u00f2ng th\u00ed nghi\u1ec7m n\u1eefa. \u0110\u00e2y \u0111\u00e3 tr\u1edf th\u00e0nh ki\u1ebfn th\u1ee9c thi\u1ebft y\u1ebfu \u0111\u1ed1i v\u1edbi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c k\u1ef9 s\u01b0 m\u1ea1ng \u0111ang x\u1eed l\u00fd s\u1ef1 c\u1ed1 tr\u00ean c\u00e1c h\u1ec7 th\u1ed1ng \u0111ang ho\u1ea1t \u0111\u1ed9ng<\/p><\/li><li><p>C\u00e1c nh\u00e0 mua IT \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng module tr\u01b0\u1edbc khi mua s\u1eafm<\/p><\/li><li><p>C\u00e1c nh\u00e0 t\u00edch h\u1ee3p h\u1ec7 th\u1ed1ng \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111a nh\u00e0 cung c\u1ea5p<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">H\u01b0\u1edbng d\u1eabn n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m thu h\u1eb9p kho\u1ea3ng c\u00e1ch gi\u1eefa l\u00fd thuy\u1ebft v\u00e0 quy tr\u00ecnh ki\u1ec3m tra th\u1ef1c ti\u1ec5n. Thay v\u00ec nh\u1eefng gi\u1ea3i th\u00edch m\u01a1 h\u1ed3, b\u1ea1n s\u1ebd h\u1ecdc \u0111\u01b0\u1ee3c:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110i\u1ec1u g\u00ec l\u00e0 <strong>c\u00e1c thi\u1ebft b\u1ecb c\u1ee5 th\u1ec3<\/strong> c\u1ea7n thi\u1ebft \u0111\u1ec3 ki\u1ec3m tra SFP m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c<\/p><\/li><li><p>Module quang <strong>c\u00e1c th\u00f4ng s\u1ed1 quang h\u1ecdc, \u0111i\u1ec7n v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch<\/strong> th\u1ef1c s\u1ef1 quan tr\u1ecdng<\/p><\/li><li><p>C\u00e1ch \u00e1p d\u1ee5ng <strong>c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra ti\u00eau chu\u1ea9n ng\u00e0nh<\/strong> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m chuy\u00ean nghi\u1ec7p<\/p><\/li><li><p>\u0110i\u1ec1u g\u00ec l\u00e0 <strong>c\u00e1c r\u1ee7i ro h\u1ecfng h\u00f3c ti\u1ec1m \u1ea9n<\/strong> (nh\u01b0 b\u1ea5t \u1ed5n nhi\u1ec7t ho\u1eb7c sai l\u1ec7ch EEPROM) c\u1ea7n l\u01b0u \u00fd<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00e1c v\u1edbi c\u00e1c t\u1ed5ng quan chung chung, b\u00e0i vi\u1ebft n\u00e0y tu\u00e2n theo logic ki\u1ec3m tra th\u1ef1c t\u1ebf trong ph\u00f2ng th\u00ed nghi\u1ec7m, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n do c\u00e1c t\u1ed5 ch\u1ee9c nh\u01b0 IEEE v\u00e0 MSA ban h\u00e0nh, \u0111\u1ed3ng th\u1eddi c\u0169ng t\u00edch h\u1ee3p c\u00e1c hi\u1ec3u bi\u1ebft th\u1ef1c ti\u1ec5n t\u1eeb c\u00e1c tri\u1ec3n khai th\u1ef1c \u0111\u1ecba\u2014n\u01a1i vi\u1ec7c v\u01b0\u1ee3t qua m\u1ed9t b\u00e0i ki\u1ec3m tra c\u01a1 b\u1ea3n kh\u00f4ng lu\u00f4n \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Vi\u1ec7c ki\u1ec3m tra m\u1ed9t b\u1ed9 thu ph\u00e1t SFP kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 x\u00e1c minh xem n\u00f3 \u201cho\u1ea1t \u0111\u1ed9ng\u201d hay kh\u00f4ng\u2014m\u00e0 c\u00f2n l\u00e0 vi\u1ec7c x\u00e1c minh c\u00e1c bi\u00ean \u0111\u1ed9 hi\u1ec7u su\u1ea5t, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 \u0111\u1ed9 tin c\u1eady d\u00e0i h\u1ea1n d\u01b0\u1edbi c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf.<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ebfn cu\u1ed1i h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n s\u1ebd c\u00f3 \u0111\u01b0\u1ee3c m\u1ed9t hi\u1ec3u bi\u1ebft r\u00f5 r\u00e0ng, t\u1eebng b\u01b0\u1edbc v\u1ec1 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-to-check-sfp-module-cisco-commands-testing-guide\/\">vi\u1ec7c ki\u1ec3m tra SFP<\/a>, gi\u00fap b\u1ea1n c\u00f3 th\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ch\u1ea9n \u0111o\u00e1n s\u1ef1 c\u1ed1 nhanh h\u01a1n<\/p><\/li><li><p>Gi\u1ea3m thi\u1ec3u r\u1ee7i ro tri\u1ec3n khai<\/p><\/li><li><p>L\u1ef1a ch\u1ecdn c\u00e1c module ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n, \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra \u0111\u1ea7y \u0111\u1ee7 m\u1ed9t c\u00e1ch t\u1ef1 tin<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c t\u00ecm hi\u1ec3u xem m\u1ed9t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/491474.htm\">B\u1ed9 thu ph\u00e1t SFP<\/a> th\u1ef1c t\u1ebf l\u00e0 g\u00ec\u2014v\u00e0 t\u1ea1i sao vi\u1ec7c ki\u1ec3m tra \u0111\u00fang c\u00e1ch l\u00e0 c\u1ef1c k\u1ef3 quan tr\u1ecdng tr\u01b0\u1edbc b\u1ea5t k\u1ef3 l\u1ea7n tri\u1ec3n khai n\u00e0o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udea9 B\u1ed9 thu ph\u00e1t SFP l\u00e0 g\u00ec v\u00e0 t\u1ea1i sao vi\u1ec7c ki\u1ec3m tra SFP l\u1ea1i quan tr\u1ecdng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-25832-1-2-4g-transceiver-modules.htm\">C\u00e1c m\u00f4-\u0111un SFP<\/a> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 chu\u1ea9n h\u00f3a v\u00e0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/are-sfp-modules-hot-swappable-safe-sfp-hot-swap-guide\/\">Cat5e\/Cat6 Ethernet<\/a>, hi\u1ec7u su\u1ea5t th\u1ef1c t\u1ebf c\u1ee7a ch\u00fang c\u00f3 th\u1ec3 thay \u0111\u1ed5i do s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n xu\u1ea5t, th\u00e0nh ph\u1ea7n quang h\u1ecdc v\u00e0 m\u00e3 h\u00f3a kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u00f4i tr\u01b0\u1eddng t\u1ed1c \u0111\u1ed9 cao, ngay c\u1ea3 nh\u1eefng sai l\u1ec7ch nh\u1ecf v\u1ec1 c\u00f4ng su\u1ea5t quang, \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u ho\u1eb7c \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn m\u1ea5t li\u00ean k\u1ebft, l\u1ed7i d\u1eef li\u1ec7u ho\u1eb7c ng\u1eebng ho\u1ea1t \u0111\u1ed9ng ngo\u00e0i d\u1ef1 ki\u1ebfn. Ph\u1ea7n n\u00e0y gi\u1ea3i th\u00edch vai tr\u00f2 c\u1ee7a <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-in-networking-function-types-and-applications\/\">c\u00e1c b\u1ed9 thu ph\u00e1t SFP trong m\u1ea1ng m\u00e1y t\u00ednh<\/a> v\u00e0 n\u00eau b\u1eadt c\u00e1c r\u1ee7i ro ch\u00ednh m\u00e0 vi\u1ec7c ki\u1ec3m tra hi\u1ec7u qu\u1ea3 gi\u00fap ng\u0103n ng\u1eeba\u2014\u0111\u1eb7t n\u1ec1n t\u1ea3ng cho t\u1ea5t c\u1ea3 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra \u0111\u01b0\u1ee3c th\u1ea3o lu\u1eadn \u1edf ph\u1ea7n sau.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4f345402ecc54d84b559512a26be53d0.jpg\" alt=\"What Is an SFP Transceiver and Why SFP Testing Matters\" class=\"wp-image-2845\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4f345402ecc54d84b559512a26be53d0.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4f345402ecc54d84b559512a26be53d0-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4f345402ecc54d84b559512a26be53d0-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4f345402ecc54d84b559512a26be53d0-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/4f345402ecc54d84b559512a26be53d0-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ed9 thu ph\u00e1t SFP l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t b\u1ed9 thu ph\u00e1t SFP (<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-small-form-factor-pluggable-transceiver-guide\/\">Typical Medium<\/a>) l\u00e0 m\u1ed9t module nh\u1ecf g\u1ecdn, c\u00f3 th\u1ec3 thay th\u1ebf n\u00f3ng, \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng\u2014ch\u1eb3ng h\u1ea1n nh\u01b0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-network-switch\/\">routers<\/a>, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-router-key-functions-types\/\">servers<\/a>, and <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-servers-components-types-functions\/\">, and fiber optic links through interchangeable transceiver modules. Unlike standard RJ45 Ethernet ports, SFP ports can support both fiber optic and copper Ethernet connections depending on the installed module.<\/a>\u2014v\u1edbi c\u00e1p quang ho\u1eb7c c\u00e1p \u0111\u1ed3ng. N\u00f3 \u0111\u00f3ng vai tr\u00f2 l\u00e0 giao di\u1ec7n gi\u1eefa t\u00edn hi\u1ec7u \u0111i\u1ec7n b\u00ean trong thi\u1ebft b\u1ecb v\u00e0 t\u00edn hi\u1ec7u quang (ho\u1eb7c \u0111i\u1ec7n) \u0111\u01b0\u1ee3c truy\u1ec1n qua ph\u01b0\u01a1ng ti\u1ec7n m\u1ea1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, m\u1ed9t module SFP th\u1ef1c hi\u1ec7n hai ch\u1ee9c n\u0103ng c\u1ed1t l\u00f5i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Truy\u1ec1n (Tx):<\/strong> Chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111i\u1ec7n th\u00e0nh t\u00edn hi\u1ec7u quang (cho c\u00e1c li\u00ean k\u1ebft quang)<\/p><\/li><li><p><strong>Nh\u1eadn (Rx):<\/strong> Chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u quang \u0111\u1ea7u v\u00e0o tr\u1edf l\u1ea1i th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c b\u1ed9 thu ph\u00e1t SFP \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>```html<\/p><\/li><li><p>M\u1ea1ng LAN doanh nghi\u1ec7p<\/p><\/li><li><p>M\u1ea1ng vi\u1ec5n th\u00f4ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u00fang tu\u00e2n theo c\u00e1c \u0111\u1eb7c t\u1ea3 chu\u1ea9n do c\u00e1c t\u1ed5 ch\u1ee9c nh\u01b0 <a target=\"_self\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/multi-source-agreements-optical-transceivers\/\">MSA<\/a> and <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ieee-institute-of-electrical-and-electronics-engineers\/\">IEEE<\/a>, quy \u0111\u1ecbnh, nh\u1eb1m \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c nhau\u2014at least in theory.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u1ea1i sao vi\u1ec7c ki\u1ec3m tra SFP l\u1ea1i quan tr\u1ecdng trong c\u00e1c m\u1ea1ng th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c d\u00f9 c\u00e1c module SFP \u0111\u01b0\u1ee3c chu\u1ea9n h\u00f3a, hi\u1ec7u su\u1ea5t th\u1ef1c t\u1ebf c\u1ee7a ch\u00fang c\u00f3 th\u1ec3 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 t\u00f9y thu\u1ed9c v\u00e0o ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n xu\u1ea5t, m\u00e3 h\u00f3a kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh. \u0110\u00e2y l\u00e0 l\u00fac vi\u1ec7c ki\u1ec3m tra \u0111\u00fang c\u00e1ch tr\u1edf n\u00ean c\u1ef1c k\u1ef3 quan tr\u1ecdng.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >Ng\u0103n ng\u1eeba s\u1ef1 c\u1ed1 m\u1ea1ng tr\u01b0\u1edbc khi tri\u1ec3n khai<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c module ch\u01b0a \u0111\u01b0\u1ee3c ki\u1ec3m tra ho\u1eb7c ki\u1ec3m tra kh\u00f4ng k\u1ef9 l\u01b0\u1ee1ng c\u00f3 th\u1ec3 g\u00e2y ra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ea5t li\u00ean k\u1ebft (kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i)<\/p><\/li><li><p>M\u1ea5t k\u1ebft n\u1ed1i ng\u1eaft qu\u00e3ng<\/p><\/li><li><p>M\u1ea5t g\u00f3i v\u00e0 th\u00f4ng l\u01b0\u1ee3ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u1ea1ng th\u00e1i \u201cli\u00ean k\u1ebft l\u00ean\u201d c\u01a1 b\u1ea3n kh\u00f4ng \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh. Ch\u1ec9 c\u00f3 ki\u1ec3m tra \u0111\u00fang c\u00e1ch\u2014nh\u01b0 ki\u1ec3m tra t\u1ef7 l\u1ec7 l\u1ed7i bit (BER) v\u00e0 x\u00e1c th\u1ef1c c\u00f4ng su\u1ea5t quang\u2014m\u1edbi c\u00f3 th\u1ec3 kh\u1eb3ng \u0111\u1ecbnh \u0111\u1ed9 tin c\u1eady.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >\u0110\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t quang h\u1ecdc \u0111\u00e1p \u1ee9ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed7i <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/488474.htm\">m\u00f4-\u0111un SFP<\/a> ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng trong c\u00e1c gi\u1edbi h\u1ea1n quang h\u1ecdc nghi\u00eam ng\u1eb7t, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng su\u1ea5t ph\u00e1t (Tx)<\/p><\/li><li><p>\u0110\u1ed9 nh\u1ea1y nh\u1eadn (Rx)<\/p><\/li><li><p>\u0110\u1ed9 ch\u00ednh x\u00e1c b\u01b0\u1edbc s\u00f3ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu c\u00e1c gi\u00e1 tr\u1ecb n\u00e0y l\u1ec7ch kh\u1ecfi ph\u1ea1m vi ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c, k\u1ebft qu\u1ea3 c\u00f3 th\u1ec3 l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Gi\u1ea3m kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn<\/p><\/li><li><p>T\u0103ng t\u1ef7 l\u1ec7 l\u1ed7i<\/p><\/li><li><p>M\u1ea5t ho\u00e0n to\u00e0n t\u00edn hi\u1ec7u<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c ki\u1ec3m tra \u0111\u1ea3m b\u1ea3o module \u0111\u00e1p \u1ee9ng ng\u00e2n s\u00e1ch quang h\u1ecdc v\u00e0 bi\u00ean \u0111\u1ed9 thi\u1ebft k\u1ebf c\u1ee7a n\u00f3.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >Tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u0111a nh\u00e0 cung c\u1ea5p, c\u00e1c module SFP ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng li\u1ec1n m\u1ea1ch v\u1edbi c\u00e1c switch c\u1ee7a c\u00e1c c\u00f4ng ty nh\u01b0 Cisco ho\u1eb7c Juniper Networks.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1 h\u01a1n l\u00e0 c\u00e1c ti\u00eau chu\u1ea9n v\u1eadt l\u00fd:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00e3 h\u00f3a EEPROM ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/li><li><p>H\u00e0nh vi firmware ph\u1ea3i t\u01b0\u01a1ng th\u00edch v\u1edbi k\u1ef3 v\u1ecdng c\u1ee7a thi\u1ebft b\u1ecb ch\u1ee7<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng c\u00f3 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-to-test-sfp-compatibility\/\">t\u01b0\u01a1ng th\u00edch<\/a> ki\u1ec3m tra \u0111\u00fang c\u00e1ch, b\u1ea1n c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u201cL\u1ed7i \u201db\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li><li><p>C\u00e1c c\u1ed5ng b\u1ecb v\u00f4 hi\u1ec7u h\u00f3a<\/p><\/li><li><p>Gi\u1ea3m ch\u1ee9c n\u0103ng (v\u00ed d\u1ee5: t\u1eaft gi\u00e1m s\u00e1t)<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" >Ph\u00e1t hi\u1ec7n c\u00e1c r\u1ee7i ro ti\u1ec1m \u1ea9n v\u1ec1 \u0111\u1ed9 tin c\u1eady<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 v\u1ea5n \u0111\u1ec1 ch\u1ec9 xu\u1ea5t hi\u1ec7n trong \u0111i\u1ec1u ki\u1ec7n ch\u1ecbu t\u1ea3i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Qu\u00e1 nhi\u1ec7t<\/strong> (th\u01b0\u1eddng g\u1eb7p \u1edf module c\u00f4ng su\u1ea5t cao ho\u1eb7c <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476770.htm\">C\u00e1c m\u00f4-\u0111un SFP RJ45<\/a>)<\/p><\/li><li><p><strong>Suy gi\u1ea3m t\u00edn hi\u1ec7u theo th\u1eddi gian<\/strong><\/p><\/li><li><p><strong>H\u1ecfng linh ki\u1ec7n s\u1edbm<\/strong><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng r\u1ee7i ro n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n th\u00f4ng qua:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra nhi\u1ec7t \u0111\u1ed9<\/p><\/li><li><p>Ki\u1ec3m tra l\u00e0m gi\u00e0 (burn-in)<\/p><\/li><li><p>Ki\u1ec3m tra t\u1ef7 l\u1ec7 l\u1ed7i bit (BER) trong th\u1eddi gian d\u00e0i<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" >Gi\u1ea3m chi ph\u00ed v\u1eadn h\u00e0nh d\u00e0i h\u1ea1n<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un l\u1ed7i d\u1eabn \u0111\u1ebfn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Chi ph\u00ed b\u1ea3o tr\u00ec t\u0103ng cao<\/p><\/li><li><p>Th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00e1c kho\u1ea3n ph\u1ea1t do vi ph\u1ea1m SLA<\/p><\/li><li><p>T\u1ef7 l\u1ec7 tr\u1ea3 h\u00e0ng (RMA) cao h\u01a1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch tri\u1ec3n khai ki\u1ec3m tra SFP \u0111\u00fang c\u00e1ch, c\u00e1c t\u1ed5 ch\u1ee9c c\u00f3 th\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u1ea3i thi\u1ec7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a m\u1ea1ng<\/p><\/li><li><p>Gi\u1ea3m th\u1eddi gian kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1<\/p><\/li><li><p>K\u00e9o d\u00e0i tu\u1ed5i th\u1ecd thi\u1ebft b\u1ecb<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>B\u1ed9 thu ph\u00e1t SFP kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n c\u1eafm v\u00e0 ch\u1ea1y\u2014\u0111\u00e2y l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb quang h\u1ecdc ch\u00ednh x\u00e1c, c\u1ea7n \u0111\u01b0\u1ee3c ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u n\u0103ng, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i<strong>.<\/strong><\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Trong ph\u1ea7n ti\u1ebfp theo, ch\u00fang ta s\u1ebd ph\u00e2n t\u00edch chi ti\u1ebft c\u00e1c thi\u1ebft b\u1ecb c\u1ea7n thi\u1ebft \u0111\u1ec3 ki\u1ec3m tra m\u1ed9t <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/488475.htm\">B\u1ed9 thu ph\u00e1t SFP<\/a>, t\u1eeb c\u00e1c c\u00f4ng c\u1ee5 quang h\u1ecdc c\u01a1 b\u1ea3n \u0111\u1ebfn thi\u1ebft b\u1ecb ph\u00f2ng th\u00ed nghi\u1ec7m ti\u00ean ti\u1ebfn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u00f4i tr\u01b0\u1eddng x\u00e1c th\u1ef1c chuy\u00ean nghi\u1ec7p.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udea9 C\u00e1ch ki\u1ec3m tra b\u1ed9 thu ph\u00e1t SFP: C\u00e1c thi\u1ebft b\u1ecb ki\u1ec3m tra c\u1ed1t l\u00f5i<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u00e1nh gi\u00e1 ch\u00ednh x\u00e1c m\u1ed9t b\u1ed9 thu ph\u00e1t SFP, k\u1ef9 s\u01b0 d\u1ef1a v\u00e0o s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb quang h\u1ecdc, \u0111i\u1ec7n v\u00e0 m\u1ee9c giao th\u1ee9c. M\u1ed7i c\u00f4ng c\u1ee5 t\u1eadp trung v\u00e0o m\u1ed9t kh\u00eda c\u1ea1nh c\u1ee5 th\u1ec3 c\u1ee7a hi\u1ec7u n\u0103ng\u2014c\u00f9ng nhau t\u1ea1o th\u00e0nh m\u1ed9t h\u1ec7 th\u1ed1ng x\u00e1c th\u1ef1c \u0111\u1ea7y \u0111\u1ee7, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n c\u1ee7a IEEE v\u00e0 MSA.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8e45ef7efd464741aefdbd32b341f070.jpg\" alt=\"How to Test an SFP Transceiver: Core Test Instruments\" class=\"wp-image-2846\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8e45ef7efd464741aefdbd32b341f070.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8e45ef7efd464741aefdbd32b341f070-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8e45ef7efd464741aefdbd32b341f070-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8e45ef7efd464741aefdbd32b341f070-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8e45ef7efd464741aefdbd32b341f070-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng ph\u00e2n t\u00edch c\u00e1c thi\u1ebft b\u1ecb ki\u1ec3m tra c\u1ed1t l\u00f5i c\u1ea7n thi\u1ebft trong quy tr\u00ecnh ki\u1ec3m tra SFP chuy\u00ean nghi\u1ec7p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110\u1ed3ng h\u1ed3 \u0111o c\u00f4ng su\u1ea5t quang (OPM)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed3ng h\u1ed3 \u0111o c\u00f4ng su\u1ea5t quang l\u00e0 c\u00f4ng c\u1ee5 c\u01a1 b\u1ea3n nh\u1ea5t trong ki\u1ec3m tra SFP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ee5c \u0111\u00edch:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110o c\u00f4ng su\u1ea5t \u0111\u1ea7u ra ph\u00e1t (Tx)<\/p><\/li><li><p>X\u00e1c minh c\u00f4ng su\u1ea5t quang \u0111\u1ea7u v\u00e0o nh\u1eadn (Rx)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c nh\u1eadn xem m\u00f4-\u0111un c\u00f3 ho\u1ea1t \u0111\u1ed9ng trong ng\u00e2n s\u00e1ch quang h\u1ecdc \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh hay kh\u00f4ng<\/p><\/li><li><p>Gi\u00fap nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh c\u00e1c b\u1ed9 ph\u00e1t y\u1ebfu ho\u1eb7c t\u1ed5n hao li\u00ean k\u1ebft qu\u00e1 m\u1ee9c<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 c\u00f4ng c\u1ee5 ch\u1ea9n \u0111o\u00e1n \u0111\u1ea7u ti\u00ean trong vi\u1ec7c x\u1eed l\u00fd s\u1ef1 c\u1ed1.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >M\u00e1y ph\u00e2n t\u00edch ph\u1ed5 quang (OSA)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The<strong> <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-spectrum-analyzer-measuring-light-lasers-leds-fiber\/\"><strong>M\u00e1y ph\u00e2n t\u00edch ph\u1ed5 quang<\/strong><\/a><strong> (OSA)<\/strong> cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft v\u1ec1 t\u00edn hi\u1ec7u quang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ee5c \u0111\u00edch:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110o b\u01b0\u1edbc s\u00f3ng trung t\u00e2m <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-wavelengths-850nm-1310nm-1550nm-guide\/\">b\u01b0\u1edbc s\u00f3ng<\/a> (v\u00ed d\u1ee5: 850 nm \/ 1310 nm \/ 1550 nm)<\/p><\/li><li><p>Ph\u00e2n t\u00edch \u0111\u1ed9 r\u1ed9ng ph\u1ed5 v\u00e0 c\u00e1c mode ph\u1ee5<\/p><\/li><li><p>\u0110\u00e1nh gi\u00e1 \u0111\u1ed9 tinh khi\u1ebft c\u1ee7a t\u00edn hi\u1ec7u quang<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 c\u00e1c \u0111\u1eb7c t\u1ea3 b\u01b0\u1edbc s\u00f3ng ti\u00eau chu\u1ea9n<\/p><\/li><li><p>Ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 tr\u00f4i b\u01b0\u1edbc s\u00f3ng ho\u1eb7c laser kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ed9 suy hao quang \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c (VOA)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">VOA \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00f4 ph\u1ecfng t\u1ed5n hao truy\u1ec1n d\u1eabn trong th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ee5c \u0111\u00edch:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Gi\u1ea3m d\u1ea7n c\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u quang<\/p><\/li><li><p>Ki\u1ec3m tra gi\u1edbi h\u1ea1n \u0111\u1ed9 nh\u1ea1y c\u1ee7a b\u1ed9 nh\u1eadn<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Gi\u00fap x\u00e1c \u0111\u1ecbnh ng\u01b0\u1ee1ng c\u00f4ng su\u1ea5t nh\u1eadn (Rx) t\u1ed1i thi\u1ec3u<\/p><\/li><li><p>Quan tr\u1ecdng \u0111\u1ec3 x\u00e1c th\u1ef1c hi\u1ec7u su\u1ea5t tr\u00ean kho\u1ea3ng c\u00e1ch d\u00e0i<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ed9 ki\u1ec3m tra t\u1ef7 l\u1ec7 l\u1ed7i bit (BERT)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">BERT l\u00e0 thi\u1ebft b\u1ecb thi\u1ebft y\u1ebfu \u0111\u1ec3 x\u00e1c th\u1ef1c ch\u1ea5t l\u01b0\u1ee3ng truy\u1ec1n d\u1eef li\u1ec7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ee5c \u0111\u00edch:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ea1o c\u00e1c m\u1eabu ki\u1ec3m tra (v\u00ed d\u1ee5: PRBS31)<\/p><\/li><li><p>\u0110o <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/understanding-what-is-bit-error-rate\/\">t\u1ef7 l\u1ec7 l\u1ed7i bit<\/a> (BER) theo th\u1eddi gian<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Cung c\u1ea5p ph\u00e9p \u0111o \u0111\u1ecbnh l\u01b0\u1ee3ng v\u1ec1 \u0111\u1ed9 tin c\u1eady c\u1ee7a li\u00ean k\u1ebft<\/p><\/li><li><p>Ti\u00eau chu\u1ea9n ng\u00e0nh: BER \u2264 10\u207b\u00b9\u00b2<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 M\u1ed9t module c\u00f3 th\u1ec3 \u201ck\u1ebft n\u1ed1i th\u00e0nh c\u00f4ng\u201d nh\u01b0ng v\u1eabn kh\u00f4ng \u0111\u1ea1t y\u00eau c\u1ea7u BER \u2014 c\u00f4ng c\u1ee5 n\u00e0y ti\u1ebft l\u1ed9 \u0111i\u1ec1u \u0111\u00f3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Dao \u0111\u1ed9ng k\u00fd t\u1ed1c \u0111\u1ed9 cao \/ B\u1ed9 ph\u00e2n t\u00edch truy\u1ec1n th\u00f4ng k\u1ef9 thu\u1eadt s\u1ed1 (DCA)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c thi\u1ebft b\u1ecb n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e2n t\u00edch t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ee5c \u0111\u00edch:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ghi nh\u1eadn bi\u1ec3u \u0111\u1ed3 m\u1eaft<\/p><\/li><li><p>\u0110o:<\/p><ul><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-to-reduce-jitter-in-optical-networks-for-stability\/\">\u0110\u1ed9 m\u00e9o th\u1eddi gian (jitter)<\/a><\/p><\/li><li><p>Th\u1eddi gian t\u0103ng\/th\u1eddi gian gi\u1ea3m<\/p><\/li><li><p>Nhi\u1ec5u<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Tr\u1ef1c quan h\u00f3a ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u theo th\u1eddi gian th\u1ef1c<\/p><\/li><li><p>\u0110\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n m\u1eb7t n\u1ea1 m\u1eaft IEEE<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ed9 ph\u00e2n t\u00edch I\u00b2C \/ EEPROM<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng c\u1ee5 n\u00e0y giao ti\u1ebfp v\u1edbi b\u1ed9 nh\u1edb n\u1ed9i b\u1ed9 c\u1ee7a SFP.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ee5c \u0111\u00edch:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ecdc\/ghi d\u1eef li\u1ec7u EEPROM<\/p><\/li><li><p>X\u00e1c minh DDM\/DOM (Gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o \u0111\u00fang:<\/p><ul><li><p>Nh\u1eadn d\u1ea1ng nh\u00e0 cung c\u1ea5p<\/p><\/li><li><p>D\u1eef li\u1ec7u hi\u1ec7u chu\u1ea9n<\/p><\/li><li><p>M\u00e3 h\u00f3a t\u01b0\u01a1ng th\u00edch<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Thi\u1ebft y\u1ebfu \u0111\u1ec3 tr\u00e1nh c\u00e1c s\u1ef1 c\u1ed1 \u201cb\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Bo m\u1ea1ch th\u1eed nghi\u1ec7m m\u00e1y ch\u1ee7 \/ N\u1ec1n t\u1ea3ng \u0111\u00e1nh gi\u00e1<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Bo m\u1ea1ch th\u1eed nghi\u1ec7m m\u00e1y ch\u1ee7 m\u00f4 ph\u1ecfng thi\u1ebft b\u1ecb m\u1ea1ng th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ee5c \u0111\u00edch:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Cung c\u1ea5p giao di\u1ec7n \u0111i\u1ec7n v\u1edbi module SFP<\/p><\/li><li><p>Cho ph\u00e9p ki\u1ec3m tra c\u00f3 ki\u1ec3m so\u00e1t b\u00ean ngo\u00e0i b\u1ed9 chuy\u1ec3n m\u1ea1ch\/b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ea7y \u0111\u1ee7<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Cho ph\u00e9p \u0111i\u1ec1u ki\u1ec7n ki\u1ec3m tra trong ph\u00f2ng th\u00ed nghi\u1ec7m c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i<\/p><\/li><li><p>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c th\u1ef1c v\u00e0 g\u1ee1 l\u1ed7i firmware<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u00f9y ch\u1ecdn nh\u01b0ng ph\u1ed5 bi\u1ebfn: C\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch m\u1ea1ng th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 x\u00e1c th\u1ef1c \u0111\u1ea7y \u0111\u1ee7, k\u1ef9 s\u01b0 th\u01b0\u1eddng ki\u1ec3m tra c\u00e1c module trong c\u00e1c thi\u1ebft b\u1ecb th\u1ef1c t\u1ebf t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p nh\u01b0 Cisco ho\u1eb7c Juniper Networks.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ee5c \u0111\u00edch:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c minh kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch \u201cc\u1eafm v\u00e0o l\u00e0 d\u00f9ng \u0111\u01b0\u1ee3c\u201d<\/p><\/li><li><p>Ki\u1ec3m tra h\u00e0nh vi li\u00ean k\u1ebft trong \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>Kh\u00f4ng c\u00f3 thi\u1ebft b\u1ecb n\u00e0o duy nh\u1ea5t c\u00f3 th\u1ec3 x\u00e1c th\u1ef1c \u0111\u1ea7y \u0111\u1ee7 m\u1ed9t b\u1ed9 thu ph\u00e1t SFP.<\/strong><br\/>M\u1ed9t c\u1ea5u h\u00ecnh ki\u1ec3m tra \u0111\u00e1ng tin c\u1eady k\u1ebft h\u1ee3p \u0111o l\u01b0\u1eddng quang h\u1ecdc, x\u00e1c th\u1ef1c \u0111i\u1ec7n v\u00e0 x\u00e1c minh \u1edf c\u1ea5p giao th\u1ee9c.<\/p><\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng c\u1ee5 quang h\u1ecdc \u2192 \u0110o c\u00f4ng su\u1ea5t, b\u01b0\u1edbc s\u00f3ng, ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u<\/p><\/li><li><p>C\u00f4ng c\u1ee5 \u0111i\u1ec7n \u2192 \u0110\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u (BER, jitter)<\/p><\/li><li><p>C\u00f4ng c\u1ee5 giao di\u1ec7n \u2192 X\u00e1c th\u1ef1c kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 ch\u1ea9n \u0111o\u00e1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f9ng nhau, c\u00e1c thi\u1ebft b\u1ecb n\u00e0y t\u1ea1o th\u00e0nh h\u1ec7 sinh th\u00e1i ki\u1ec3m tra SFP \u0111\u1ea7y \u0111\u1ee7, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m chuy\u00ean nghi\u1ec7p v\u00e0 m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t ch\u1ea5t l\u01b0\u1ee3ng cao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong ph\u1ea7n ti\u1ebfp theo, ch\u00fang ta s\u1ebd \u0111i s\u00e2u h\u01a1n v\u00e0o <strong><em>c\u00e1c m\u1ee5c v\u00e0 th\u00f4ng s\u1ed1 ki\u1ec3m tra quang h\u1ecdc c\u1ee5 th\u1ec3<\/em><\/strong> x\u00e1c \u0111\u1ecbnh li\u1ec7u m\u1ed9t m\u00f4-\u0111un SFP c\u00f3 th\u1ef1c s\u1ef1 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n hi\u1ec7u n\u0103ng hay kh\u00f4ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udea9 C\u00e1c m\u1ee5c ki\u1ec3m tra quang h\u1ecdc \u0111\u1ed1i v\u1edbi m\u00f4-\u0111un SFP<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u1ec7u n\u0103ng quang h\u1ecdc l\u00e0 l\u00f5i c\u1ee7a vi\u1ec7c ki\u1ec3m tra b\u1ed9 thu ph\u00e1t SFP. Ngay c\u1ea3 khi m\u1ed9t m\u00f4-\u0111un c\u1ea5p ngu\u1ed3n v\u00e0 thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i, c\u00e1c \u0111\u1eb7c t\u00ednh quang h\u1ecdc k\u00e9m v\u1eabn c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn <strong>t\u1ef7 l\u1ec7 l\u1ed7i cao, kho\u1ea3ng c\u00e1ch truy\u1ec1n gi\u1ea3m ho\u1eb7c k\u1ebft n\u1ed1i kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady, k\u1ef9 s\u01b0 \u0111\u00e1nh gi\u00e1 m\u1ed9t s\u1ed1 th\u00f4ng s\u1ed1 quang h\u1ecdc then ch\u1ed1t, m\u1ed7i th\u00f4ng s\u1ed1 \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u v\u00e0 hi\u1ec7u n\u0103ng k\u1ebft n\u1ed1i.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/48b56c2e95b44303b1cadea4930df25b.jpg\" alt=\" Optical Test Items for SFP Modules\" class=\"wp-image-2847\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/48b56c2e95b44303b1cadea4930df25b.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/48b56c2e95b44303b1cadea4930df25b-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/48b56c2e95b44303b1cadea4930df25b-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/48b56c2e95b44303b1cadea4930df25b-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/48b56c2e95b44303b1cadea4930df25b-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00f4ng su\u1ea5t quang ph\u00e1t (Tx Power)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>M\u1ee9c c\u00f4ng su\u1ea5t quang do b\u1ed9 ph\u00e1t SFP ph\u00e1t ra, th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng dBm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Quy\u1ebft \u0111\u1ecbnh kho\u1ea3ng c\u00e1ch m\u00e0 t\u00edn hi\u1ec7u c\u00f3 th\u1ec3 truy\u1ec1n \u0111i<\/p><\/li><li><p>Ph\u1ea3i n\u1eb1m trong ph\u1ea1m vi x\u00e1c \u0111\u1ecbnh (v\u00ed d\u1ee5: \u22129,5 dBm \u0111\u1ebfn \u22123 dBm \u0111\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 ti\u00eau chu\u1ea9n)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110o \u0111\u1ea7u ra b\u1eb1ng M\u00e1y \u0111o c\u00f4ng su\u1ea5t quang (OPM)<\/p><\/li><li><p>So s\u00e1nh v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a m\u00f4-\u0111un<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Qu\u00e1 th\u1ea5p:<\/strong> t\u00edn hi\u1ec7u c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u1ebfn \u0111\u01b0\u1ee3c b\u1ed9 thu<br\/><strong>Qu\u00e1 cao:<\/strong> c\u00f3 th\u1ec3 l\u00e0m qu\u00e1 t\u1ea3i ho\u1eb7c h\u01b0 h\u1ea1i b\u1ed9 thu<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110\u1ed9 nh\u1ea1y b\u1ed9 thu (Rx Sensitivity)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>M\u1ee9c c\u00f4ng su\u1ea5t quang t\u1ed1i thi\u1ec3u m\u00e0 b\u1ed9 thu c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n ch\u00ednh x\u00e1c d\u1eef li\u1ec7u \u1edf t\u1ef7 l\u1ec7 l\u1ed7i ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c \u0111\u1ecbnh gi\u1edbi h\u1ea1n d\u01b0\u1edbi c\u1ee7a vi\u1ec7c thu t\u00edn hi\u1ec7u \u0111\u00e1ng tin c\u1eady<\/p><\/li><li><p>\u0110\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c k\u1ebft n\u1ed1i kho\u1ea3ng c\u00e1ch xa ho\u1eb7c t\u1ed5n hao cao<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng B\u1ed9 suy hao quang \u0111i\u1ec1u bi\u1ebfn (VOA) \u0111\u1ec3 gi\u1ea3m d\u1ea7n c\u00f4ng su\u1ea5t \u0111\u1ea7u v\u00e0o<\/p><\/li><li><p>Gi\u00e1m s\u00e1t BER b\u1eb1ng m\u00e1y ki\u1ec3m tra t\u1ef7 l\u1ec7 l\u1ed7i bit (BERT)<\/p><\/li><li><p>Ghi l\u1ea1i m\u1ee9c c\u00f4ng su\u1ea5t th\u1ea5p nh\u1ea5t \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u BER \u2264 10\u207b\u00b9\u00b2<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u01b0\u1edbc s\u00f3ng trung t\u00e2m<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>B\u01b0\u1edbc s\u00f3ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a t\u00edn hi\u1ec7u quang (v\u00ed d\u1ee5: 850 nm, 1310 nm, 1550 nm).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi lo\u1ea1i s\u1ee3i quang v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng<\/p><\/li><li><p>B\u01b0\u1edbc s\u00f3ng sai c\u00f3 th\u1ec3 g\u00e2y ra:<\/p><ul><li><p>T\u1ed5n hao cao<\/p><\/li><li><p>C\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 t\u00ednh t\u01b0\u01a1ng th\u00edch<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110o b\u1eb1ng M\u00e1y ph\u00e2n t\u00edch ph\u1ed5 quang (OSA)<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u1ef7 s\u1ed1 t\u1eaft m\u1edf (Extinction Ratio)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>T\u1ef7 s\u1ed1 gi\u1eefa c\u00e1c m\u1ee9c c\u00f4ng su\u1ea5t quang c\u1ee7a tr\u1ea1ng th\u00e1i logic \u201c1\u201d v\u00e0 \u201c0\u201d.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Th\u1ec3 hi\u1ec7n \u0111\u1ed9 r\u00f5 r\u00e0ng c\u1ee7a t\u00edn hi\u1ec7u v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng \u0111i\u1ec1u ch\u1ebf<\/p><\/li><li><p>T\u1ef7 s\u1ed1 t\u1eaft m\u1edf th\u1ea5p d\u1eabn \u0111\u1ebfn:<\/p><ul><li><p>Kh\u1ea3 n\u0103ng ph\u00e2n bi\u1ec7t t\u00edn hi\u1ec7u k\u00e9m<\/p><\/li><li><p>T\u0103ng l\u1ed7i bit<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u01b0\u1ee3c suy ra t\u1eeb ph\u00e2n t\u00edch bi\u1ec3u \u0111\u1ed3 m\u1eaft<\/p><\/li><li><p>\u0110o b\u1eb1ng M\u00e1y ph\u00e2n t\u00edch d\u1ea1ng m\u1eaft (DCA) ho\u1eb7c dao \u0111\u1ed9ng k\u00fd<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Bi\u1ec3u \u0111\u1ed3 m\u1eaft (Ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u quang)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>Bi\u1ec3u di\u1ec5n tr\u1ef1c quan t\u00edn hi\u1ec7u theo th\u1eddi gian, cho th\u1ea5y m\u1ee9c \u0111\u1ed9 r\u00f5 r\u00e0ng khi ph\u00e2n bi\u1ec7t c\u00e1c bit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Cung c\u1ea5p c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1:<\/p><ul><li><p>\u0110\u1ed9 m\u00e9o th\u1eddi gian (jitter)<\/p><\/li><li><p>Nhi\u1ec5u<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/signal-distortion-definition-types-tips\/\">M\u00e9o t\u00edn hi\u1ec7u<\/a><\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c ch\u1ec9 b\u00e1o then ch\u1ed1t:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>M\u1eaft m\u1edf r\u1ed9ng:<\/strong> ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u t\u1ed1t<\/p><\/li><li><p><strong>M\u1eaft \u0111\u00f3ng:<\/strong> nhi\u1ec5u cao v\u00e0 l\u1ed7i nhi\u1ec1u<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1eaft t\u00edn hi\u1ec7u b\u1eb1ng dao \u0111\u1ed9ng k\u00fd t\u1ed1c \u0111\u1ed9 cao ho\u1eb7c DCA<\/p><\/li><li><p>So s\u00e1nh v\u1edbi c\u00e1c m\u1eb7t n\u1ea1 m\u1eaft do IEEE quy \u0111\u1ecbnh<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >D\u1ef1 tr\u1eef t\u1ed5n hao quang (Ng\u00e2n s\u00e1ch li\u00ean k\u1ebft)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>S\u1ef1 ch\u00eanh l\u1ec7ch gi\u1eefa:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng su\u1ea5t ph\u00e1t (Tx)<\/p><\/li><li><p>\u0110\u1ed9 nh\u1ea1y nh\u1eadn (Rx)<\/p><\/li><li><p>Tr\u1eeb t\u1ed5ng t\u1ed5n hao li\u00ean k\u1ebft<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Kh\u00e1i ni\u1ec7m c\u00f4ng th\u1ee9c:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\">\n<code>D\u1ef1 tr\u1eef t\u1ed5n hao = C\u00f4ng su\u1ea5t ph\u00e1t \u2013 T\u1ed5n hao li\u00ean k\u1ebft \u2013 \u0110\u1ed9 nh\u1ea1y thu<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c \u0111\u1ecbnh xem li\u00ean k\u1ebft c\u00f3 duy tr\u00ec \u1ed5n \u0111\u1ecbnh trong \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf hay kh\u00f4ng<\/p><\/li><li><p>\u0110\u01b0a v\u00e0o t\u00ednh to\u00e1n:<\/p><ul><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/attenuation-in-optical-transceiver-management-and-solutions\/\">Su\u1ea5t suy hao s\u1ee3i quang<\/a><\/p><\/li><li><p>T\u1ed5n hao \u0111\u1ea7u n\u1ed1i<\/p><\/li><li><p>C\u00e1c y\u1ebfu t\u1ed1 l\u00e3o h\u00f3a v\u00e0 m\u00f4i tr\u01b0\u1eddng<br\/><\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"> D\u1ef1 tr\u1eef d\u01b0\u01a1ng \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady<br\/> D\u1ef1 tr\u1eef th\u1ea5p ho\u1eb7c \u00e2m d\u1eabn \u0111\u1ebfn l\u1ed7i ng\u1eaft qu\u00e3ng<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Ki\u1ec3m tra quang h\u1ecdc kh\u00f4ng ch\u1ec9 nh\u1eb1m \u0111\u00e1p \u1ee9ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt\u2014m\u00e0 c\u00f2n nh\u1eb1m \u0111\u1ea3m b\u1ea3o d\u1ef1 tr\u1eef hi\u1ec7u n\u0103ng \u0111\u1ee7 l\u1edbn cho \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf.<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c th\u00f4ng s\u1ed1 quan tr\u1ecdng nh\u1ea5t\u2014c\u00f4ng su\u1ea5t ph\u00e1t, \u0111\u1ed9 nh\u1ea1y thu, b\u01b0\u1edbc s\u00f3ng, <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/importance-of-extinction-ratio-in-optical-transceivers\/\">t\u1ef7 s\u1ed1 t\u1eaft m\u1edf (extinction ratio)<\/a>, v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng m\u1eaft\u2014t\u00e1c \u0111\u1ed9ng qua l\u1ea1i \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh li\u1ec7u m\u00f4-\u0111un SFP c\u00f3 th\u1ec3 cung c\u1ea5p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c li\u00ean k\u1ebft \u1ed5n \u0111\u1ecbnh<\/p><\/li><li><p>T\u1ef7 l\u1ec7 l\u1ed7i th\u1ea5p<\/p><\/li><li><p>\u0110\u1ed9 tin c\u1eady d\u00e0i h\u1ea1n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong ph\u1ea7n ti\u1ebfp theo, ch\u00fang ta s\u1ebd \u0111i beyond quang h\u1ecdc \u0111\u1ec3 ki\u1ec3m tra t\u00ednh to\u00e0n v\u1eb9n \u0111i\u1ec7n v\u00e0 t\u00edn hi\u1ec7u, n\u01a1i hi\u1ec7u n\u0103ng d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c \u1edf t\u1ea7ng v\u1eadt l\u00fd.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udea9 Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra \u0111i\u1ec7n v\u00e0 t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong khi c\u00e1c th\u00f4ng s\u1ed1 quang h\u1ecdc x\u00e1c \u0111\u1ecbnh c\u00e1ch \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i, th\u00ec ki\u1ec3m tra \u0111i\u1ec7n v\u00e0 t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a, truy\u1ec1n \u0111i v\u00e0 kh\u00f4i ph\u1ee5c m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\">Kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec5u \u0111i\u1ec7n t\u1eeb, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/a>, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26225-25g-sfp28.htm\">25G<\/a>, c\u00e1c m\u00f4-\u0111un SFP t\u1ed1c \u0111\u1ed9 cao h\u01a1n, n\u01a1i ngay c\u1ea3 nh\u1eefng bi\u1ebfn d\u1ea1ng nh\u1ecf c\u0169ng c\u00f3 th\u1ec3 g\u00e2y ra l\u1ed7i d\u1eef li\u1ec7u nghi\u00eam tr\u1ecdng.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6da49c979f3644ba85c270b020240014.jpg\" alt=\"Electrical and Signal Integrity Test Methods\" class=\"wp-image-2848\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6da49c979f3644ba85c270b020240014.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6da49c979f3644ba85c270b020240014-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6da49c979f3644ba85c270b020240014-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6da49c979f3644ba85c270b020240014-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6da49c979f3644ba85c270b020240014-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c <strong>ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra \u0111i\u1ec7n ch\u00ednh<\/strong> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c th\u1ef1c hi\u1ec7u n\u0103ng b\u1ed9 thu ph\u00e1t SFP.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Ki\u1ec3m tra t\u1ef7 l\u1ec7 l\u1ed7i bit (BER)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>BER \u0111o t\u1ef7 l\u1ec7 gi\u1eefa s\u1ed1 bit nh\u1eadn sai tr\u00ean t\u1ed5ng s\u1ed1 bit truy\u1ec1n \u0111i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u00e2y l\u00e0 ch\u1ec9 b\u00e1o quan tr\u1ecdng nh\u1ea5t v\u1ec1 \u0111\u1ed9 tin c\u1eady c\u1ee7a li\u00ean k\u1ebft<\/p><\/li><li><p>Ngay c\u1ea3 s\u1ef1 gia t\u0103ng nh\u1ecf c\u1ee7a BER c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn:<\/p><ul><li><p>M\u1ea5t g\u00f3i tin<\/p><\/li><li><p>Vi\u1ec7c truy\u1ec1n l\u1ea1i<\/p><\/li><li><p>S\u1ef1 b\u1ea5t \u1ed5n m\u1ea1ng<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng m\u00e1y ki\u1ec3m tra t\u1ef7 l\u1ec7 l\u1ed7i bit (BERT)<\/p><\/li><li><p>Ph\u00e1t sinh m\u1eabu ki\u1ec3m tra chu\u1ea9n (v\u00ed d\u1ee5: PRBS31)<\/p><\/li><li><p>Truy\u1ec1n qua li\u00ean k\u1ebft SFP v\u00e0 \u0111o l\u1ed7i theo th\u1eddi gian<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Y\u00eau c\u1ea7u \u0111i\u1ec3n h\u00ecnh:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>BER \u2264 10\u207b\u00b9\u00b2 (ho\u1eb7c t\u1ed1t h\u01a1n \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng hi\u1ec7u n\u0103ng cao)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t m\u00f4-\u0111un c\u00f3 th\u1ec3 tr\u00f4ng \u201cb\u00ecnh th\u01b0\u1eddng\u201d nh\u01b0ng v\u1eabn th\u1ea5t b\u1ea1i trong ki\u1ec3m tra BER\u2014\u0111\u00e2y l\u00e0 l\u00fd do v\u00ec sao vi\u1ec7c n\u00e0y r\u1ea5t quan tr\u1ecdng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110o \u0111\u1ed9 ch\u1eadp ch\u1eddn (jitter)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>\u0110\u1ed9 ch\u1eadp ch\u1eddn (jitter) \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c bi\u1ebfn \u0111\u1ed5i v\u1ec1 th\u1eddi \u0111i\u1ec3m trong c\u00e1c chuy\u1ec3n ti\u1ebfp t\u00edn hi\u1ec7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ed9 ch\u1eadp ch\u1eddn qu\u00e1 m\u1ee9c l\u00e0m gi\u1ea3m \u0111\u1ed9 r\u00f5 n\u00e9t c\u1ee7a t\u00edn hi\u1ec7u<\/p><\/li><li><p>C\u00f3 th\u1ec3 g\u00e2y ra vi\u1ec7c gi\u1ea3i m\u00e3 sai bit t\u1ea1i b\u1ed9 thu<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c lo\u1ea1i \u0111\u1ed9 ch\u1eadp ch\u1eddn:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ed9 ch\u1eadp ch\u1eddn ng\u1eabu nhi\u00ean (RJ)<\/p><\/li><li><p>\u0110\u1ed9 ch\u1eadp ch\u1eddn x\u00e1c \u0111\u1ecbnh (DJ)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110o b\u1eb1ng m\u00e1y hi\u1ec7n s\u00f3ng t\u1ed1c \u0111\u1ed9 cao ho\u1eb7c DCA<\/p><\/li><li><p>Ph\u00e2n t\u00edch t\u1ed5ng \u0111\u1ed9 ch\u1eadp ch\u1eddn v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a n\u00f3<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Th\u1eddi gian t\u0103ng v\u00e0 th\u1eddi gian gi\u1ea3m<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>Kho\u1ea3ng th\u1eddi gian \u0111\u1ec3 t\u00edn hi\u1ec7u chuy\u1ec3n \u0111\u1ed5i gi\u1eefa c\u00e1c tr\u1ea1ng th\u00e1i logic (0 \u2192 1 v\u00e0 1 \u2192 0).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c chuy\u1ec3n \u0111\u1ed5i ch\u1eadm c\u00f3 th\u1ec3:<\/p><ul><li><p>L\u00e0m m\u1edd c\u00e1c c\u1ea1nh t\u00edn hi\u1ec7u<\/p><\/li><li><p>L\u00e0m t\u0103ng nhi\u1ec5u gi\u1eefa c\u00e1c k\u00fd hi\u1ec7u (ISI)<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ghi d\u1ea1ng s\u00f3ng b\u1eb1ng m\u00e1y hi\u1ec7n s\u00f3ng<\/p><\/li><li><p>\u0110o th\u1eddi gian chuy\u1ec3n \u0111\u1ed5i so v\u1edbi c\u00e1c gi\u1edbi h\u1ea1n ti\u00eau chu\u1ea9n<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Tu\u00e2n th\u1ee7 m\u1eb7t n\u1ea1 m\u1eaft (Eye Mask Compliance)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>M\u1ed9t ph\u00e9p ki\u1ec3m tra \u0111\u1ea1t\/kh\u00f4ng \u0111\u1ea1t, trong \u0111\u00f3 d\u1ea1ng s\u00f3ng t\u00edn hi\u1ec7u kh\u00f4ng \u0111\u01b0\u1ee3c vi ph\u1ea1m m\u1eabu m\u1eb7t n\u1ea1 m\u1eaft \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n c\u1ee7a IEEE<\/p><\/li><li><p>X\u00e1c nh\u1eadn t\u00ednh to\u00e0n v\u1eb9n t\u1ed5ng th\u1ec3 c\u1ee7a t\u00edn hi\u1ec7u trong \u0111i\u1ec1u ki\u1ec7n x\u1ea5u nh\u1ea5t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Gh\u00e9p ch\u1ed3ng bi\u1ec3u \u0111\u1ed3 m\u1eaft \u0111o \u0111\u01b0\u1ee3c l\u00ean m\u1eb7t n\u1ea1 ti\u00eau chu\u1ea9n<\/p><\/li><li><p>Ki\u1ec3m tra c\u00e1c vi ph\u1ea1m (t\u00edn hi\u1ec7u x\u00e2m nh\u1eadp v\u00e0o v\u00f9ng b\u1ecb c\u1ea5m)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c vi ph\u1ea1m m\u1eb7t n\u1ea1 cho th\u1ea5y c\u00e1c v\u1ea5n \u0111\u1ec1 ti\u1ec1m \u1ea9n v\u1ec1 \u0111\u1ed9 tin c\u1eady, ngay c\u1ea3 khi t\u1ef7 l\u1ec7 l\u1ed7i bit (BER) hi\u1ec7n t\u1ea1i v\u1eabn ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Ki\u1ec3m \u0111\u1ecbnh t\u00edn hi\u1ec7u t\u1ed1c \u0111\u1ed9 cao<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>\u0110\u00e1nh gi\u00e1 to\u00e0n di\u1ec7n t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u \u1edf t\u1ed1c \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u0111a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c m\u00f4-\u0111un SFP hi\u1ec7n \u0111\u1ea1i ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 \u0111a gigabit<\/p><\/li><li><p>C\u00e1c hi\u1ec7u \u1ee9ng t\u1ed1c \u0111\u1ed9 cao bao g\u1ed3m:<\/p><ul><li><p>Nhi\u1ec5u xuy\u00ean k\u00eanh (crosstalk)<\/p><\/li><li><p>Ph\u1ea3n x\u1ea1<\/p><\/li><li><p>T\u1ed5n hao k\u00eanh<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft h\u1ee3p:<\/p><ul><li><p>Ki\u1ec3m tra t\u1ef7 l\u1ec7 l\u1ed7i bit (BER)<\/p><\/li><li><p>Ph\u00e2n t\u00edch bi\u1ec3u \u0111\u1ed3 m\u1eaft<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/jitter-in-optics-causes-effects-measurement-reduction\/\">\u0110o \u0111\u1ed9 ch\u1eadp ch\u1eddn (jitter)<\/a><\/p><\/li><\/ul><\/li><li><p>Th\u1ef1c hi\u1ec7n ki\u1ec3m tra trong \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf (nhi\u1ec7t \u0111\u1ed9, t\u1ea3i, t\u1ed5n hao \u0111\u01b0\u1eddng truy\u1ec1n)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u26a0\ufe0f Nh\u1eefng th\u00f4ng tin ki\u1ec3m tra then ch\u1ed1t<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Ch\u1ec9 \u0111\u1ea1t y\u00eau c\u1ea7u v\u1ec1 BER l\u00e0 ch\u01b0a \u0111\u1ee7<\/strong> \u2192 \u0111\u1ed9 ch\u1eadp ch\u1eddn v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng bi\u1ec3u \u0111\u1ed3 m\u1eaft c\u0169ng ph\u1ea3i \u0111\u00e1p \u1ee9ng ti\u00eau chu\u1ea9n<\/p><\/li><li><p><strong>T\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u suy gi\u1ea3m khi ch\u1ecbu t\u1ea3i<\/strong> \u2192 lu\u00f4n ki\u1ec3m tra \u1edf t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a v\u00e0 c\u00e1c gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9<\/p><\/li><li><p><strong>\u0110\u1ed9 d\u1ef1 ph\u00f2ng r\u1ea5t quan tr\u1ecdng<\/strong> \u2192 c\u00e1c m\u00f4-\u0111un ch\u1ea5t l\u01b0\u1ee3ng cao v\u01b0\u1ee3t tr\u1ed9i h\u01a1n c\u00e1c y\u00eau c\u1ea7u t\u1ed1i thi\u1ec3u<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Ki\u1ec3m tra \u0111i\u1ec7n t\u1eed x\u00e1c minh li\u1ec7u m\u1ed9t m\u00f4-\u0111un SFP c\u00f3 th\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u \u0111\u00e1ng tin c\u1eady \u1edf t\u1ed1c \u0111\u1ed9 cao\u2014kh\u00f4ng ch\u1ec9 trong \u0111i\u1ec1u ki\u1ec7n l\u00fd t\u01b0\u1edfng, m\u00e0 c\u00f2n d\u01b0\u1edbi c\u00e1c t\u00e1c \u0111\u1ed9ng th\u1ef1c t\u1ebf<strong>.<\/strong><\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p c\u00e1c ph\u00e9p ki\u1ec3m tra BER, \u0111\u1ed9 ch\u1eadp ch\u1eddn, th\u1eddi gian t\u0103ng\/th\u1eddi gian gi\u1ea3m v\u00e0 tu\u00e2n th\u1ee7 m\u1eb7t n\u1ea1 m\u1eaft, k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u r\u00f5 r\u00e0ng<\/p><\/li><li><p>T\u1ef7 l\u1ec7 l\u1ed7i th\u1ea5p<\/p><\/li><li><p>Hi\u1ec7u n\u0103ng \u1ed5n \u0111\u1ecbnh trong th\u1eddi gian d\u00e0i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong ph\u1ea7n ti\u1ebfp theo, ch\u00fang ta s\u1ebd ki\u1ec3m tra vi\u1ec7c x\u00e1c th\u1ef1c DDM\/DOM v\u00e0 EEPROM<strong>n<\/strong>, \u0111i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o m\u00f4-\u0111un b\u00e1o c\u00e1o ch\u1ea9n \u0111o\u00e1n ch\u00ednh x\u00e1c v\u00e0 duy tr\u00ec kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udea9 X\u00e1c th\u1ef1c DDM\/DOM v\u00e0 EEPROM<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ngo\u00e0i hi\u1ec7u su\u1ea5t quang h\u1ecdc v\u00e0 \u0111i\u1ec7n, c\u00e1c m\u00f4-\u0111un SFP hi\u1ec7n \u0111\u1ea1i c\u00f2n t\u00edch h\u1ee3p c\u00e1c h\u1ec7 th\u1ed1ng ch\u1ea9n \u0111o\u00e1n s\u1ed1 v\u00e0 b\u1ed9 nh\u1edb cung c\u1ea5p d\u1eef li\u1ec7u v\u1eadn h\u00e0nh th\u1eddi gian th\u1ef1c v\u00e0 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c thi\u1ebft b\u1ecb ch\u1ee7. \u0110\u00e2y th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/troubleshoot-optical-transceivers-digital-diagnostic-monitoring\/\">DDM<\/a> (Gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1) ho\u1eb7c<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\"> DOM<\/a> (Gi\u00e1m s\u00e1t quang h\u1ecdc k\u1ef9 thu\u1eadt s\u1ed1), \u0111\u01b0\u1ee3c tri\u1ec3n khai theo c\u00e1c ti\u00eau chu\u1ea9n t\u1eeb MSA.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c x\u00e1c th\u1ef1c c\u00e1c ch\u1ee9c n\u0103ng n\u00e0y l\u00e0 thi\u1ebft y\u1ebfu \u2014 kh\u00f4ng ch\u1ec9 \u0111\u1ec3 gi\u00e1m s\u00e1t m\u00e0 c\u00f2n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o nh\u1eadn d\u1ea1ng ch\u00ednh x\u00e1c, hi\u1ec7u chu\u1ea9n v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/474677aa25444db3982836d4e45db2a9.jpg\" alt=\"DDM, DOM, and EEPROM Validation\" class=\"wp-image-2849\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/474677aa25444db3982836d4e45db2a9.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/474677aa25444db3982836d4e45db2a9-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/474677aa25444db3982836d4e45db2a9-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/474677aa25444db3982836d4e45db2a9-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/474677aa25444db3982836d4e45db2a9-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >DDM v\u00e0 DOM l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DDM\/DOM \u0111\u1ec1 c\u1eadp \u0111\u1ebfn kh\u1ea3 n\u0103ng c\u1ee7a m\u00f4-\u0111un SFP trong vi\u1ec7c t\u1ef1 gi\u00e1m s\u00e1t v\u00e0 b\u00e1o c\u00e1o c\u00e1c th\u00f4ng s\u1ed1 v\u1eadn h\u00e0nh ch\u00ednh th\u00f4ng qua giao di\u1ec7n s\u1ed1 (th\u01b0\u1eddng l\u00e0 I\u00b2C).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c gi\u00e1m s\u00e1t ch\u00ednh bao g\u1ed3m:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nhi\u1ec7t \u0111\u1ed9 (\u00b0C)<\/p><\/li><li><p>\u0110i\u1ec7n \u00e1p cung c\u1ea5p (V)<\/p><\/li><li><p>C\u00f4ng su\u1ea5t quang ph\u00e1t (Tx Power)<\/p><\/li><li><p>C\u00f4ng su\u1ea5t quang thu (Rx Power)<\/p><\/li><li><p>D\u00f2ng ph\u00e2n c\u1ef1c laser (mA)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Cho ph\u00e9p gi\u00e1m s\u00e1t t\u00ecnh tr\u1ea1ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00f4-\u0111un theo th\u1eddi gian th\u1ef1c<\/p><\/li><li><p>H\u1ed7 tr\u1ee3 ph\u00e1t hi\u1ec7n c\u00e1c s\u1ef1 c\u1ed1 nh\u01b0:<\/p><ul><li><p>Qu\u00e1 nhi\u1ec7t<\/p><\/li><li><p>S\u1ef1 suy gi\u1ea3m quang h\u1ecdc<\/p><\/li><li><p>S\u1ef1 b\u1ea5t \u1ed5n \u0111\u1ecbnh v\u1ec1 \u0111i\u1ec7n \u00e1p<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ef9 s\u01b0 m\u1ea1ng d\u1ef1a v\u00e0o c\u00e1c gi\u00e1 tr\u1ecb \u0111o n\u00e0y \u0111\u1ec3 th\u1ef1c hi\u1ec7n b\u1ea3o tr\u00ec ch\u1ee7 \u0111\u1ed9ng v\u00e0 x\u1eed l\u00fd s\u1ef1 c\u1ed1.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >X\u00e1c th\u1ef1c d\u1eef li\u1ec7u EEPROM (B\u1ed9 nh\u1edb)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed7i m\u00f4-\u0111un SFP ch\u1ee9a m\u1ed9t <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/eeprom-electrically-erasable-programmable-read-only-memory\/\">chip EEPROM<\/a> l\u01b0u tr\u1eef d\u1eef li\u1ec7u nh\u1eadn d\u1ea1ng v\u00e0 c\u1ea5u h\u00ecnh quan tr\u1ecdng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c tr\u01b0\u1eddng EEPROM \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u00ean nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 m\u00e3 linh ki\u1ec7n<\/p><\/li><li><p>C\u00e1c ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 (v\u00ed d\u1ee5:, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/475415.htm\">10GBASE-SR<\/a>)<\/p><\/li><li><p>B\u01b0\u1edbc s\u00f3ng v\u00e0 kho\u1ea3ng c\u00e1ch truy\u1ec1n d\u1eabn<\/p><\/li><li><p>S\u1ed1 s\u00ea-ri v\u00e0 d\u1eef li\u1ec7u s\u1ea3n xu\u1ea5t<\/p><\/li><li><p>M\u00e3 h\u00f3a t\u01b0\u01a1ng th\u00edch\/nh\u00e0 s\u1ea3n xu\u1ea5t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng b\u1ed9 ph\u00e2n t\u00edch I\u00b2C\/EEPROM ho\u1eb7c giao di\u1ec7n h\u1ec7 th\u1ed1ng ch\u1ee7<\/p><\/li><li><p>\u0110\u1ecdc v\u00e0 x\u00e1c minh d\u1eef li\u1ec7u so v\u1edbi c\u00e1c gi\u00e1 tr\u1ecb k\u1ef3 v\u1ecdng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o m\u00f4-\u0111un \u0111\u01b0\u1ee3c thi\u1ebft b\u1ecb m\u1ea1ng nh\u1eadn d\u1ea1ng \u0111\u00fang c\u00e1ch<\/p><\/li><li><p>Ng\u0103n ng\u1eeba c\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch nh\u01b0:<\/p><ul><li><p>\u201cL\u1ed7i \u201db\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li><li><p>C\u1ed5ng b\u1ecb v\u00f4 hi\u1ec7u h\u00f3a ho\u1eb7c ch\u1ee9c n\u0103ng b\u1ecb gi\u1edbi h\u1ea1n<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Hi\u1ec7u chu\u1ea9n v\u00e0 ki\u1ec3m tra \u0111\u1ed9 ch\u00ednh x\u00e1c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c gi\u00e1 tr\u1ecb DDM ch\u1ec9 c\u00f3 gi\u00e1 tr\u1ecb n\u1ebfu ch\u00fang ch\u00ednh x\u00e1c v\u00e0 \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n \u0111\u00fang c\u00e1ch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>So s\u00e1nh c\u00e1c gi\u00e1 tr\u1ecb b\u00e1o c\u00e1o v\u1edbi c\u00e1c thi\u1ebft b\u1ecb \u0111o b\u00ean ngo\u00e0i:<\/p><ul><li><p>Bu\u1ed3ng ki\u1ec3m tra nhi\u1ec7t \u0111\u1ed9 \u2192 x\u00e1c minh gi\u00e1 tr\u1ecb nhi\u1ec7t \u0111\u1ed9 n\u1ed9i b\u1ed9<\/p><\/li><li><p>M\u00e1y \u0111o c\u00f4ng su\u1ea5t quang \u2192 x\u00e1c minh gi\u00e1 tr\u1ecb Tx\/Rx<\/p><\/li><li><p>\u0110\u1ed3ng h\u1ed3 \u0111o \u0111i\u1ec7n \u00e1p \u2192 x\u00e1c minh \u0111i\u1ec7n \u00e1p cung c\u1ea5p<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Hi\u1ec7u chu\u1ea9n k\u00e9m c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn:<\/p><ul><li><p>Ch\u1ea9n \u0111o\u00e1n sai l\u1ec7ch<\/p><\/li><li><p>Quy\u1ebft \u0111\u1ecbnh x\u1eed l\u00fd s\u1ef1 c\u1ed1 kh\u00f4ng ch\u00ednh x\u00e1c<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un ch\u1ea5t l\u01b0\u1ee3ng cao tr\u1ea3i qua hi\u1ec7u chu\u1ea9n v\u00e0 x\u00e1c th\u1ef1c t\u1ea1i nh\u00e0 m\u00e1y.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Ki\u1ec3m tra giao ti\u1ebfp I\u00b2C v\u00e0 thanh ghi<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c m\u00f4-\u0111un SFP giao ti\u1ebfp v\u1edbi h\u1ec7 th\u1ed1ng ch\u1ee7 b\u1eb1ng giao di\u1ec7n <strong>I<\/strong>I\u00b2C.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tr\u1ecdng t\u00e2m ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Truy c\u1eadp \u0111\u1ecdc\/ghi v\u00e0o c\u00e1c thanh ghi EEPROM<\/p><\/li><li><p>Th\u1eddi gian ph\u1ea3n h\u1ed3i v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh<\/p><\/li><li><p>X\u1eed l\u00fd l\u1ed7i khi truy c\u1eadp l\u1eb7p l\u1ea1i<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1ea3m b\u1ea3o giao ti\u1ebfp \u1ed5n \u0111\u1ecbnh gi\u1eefa m\u00f4-\u0111un v\u00e0 h\u1ec7 th\u1ed1ng ch\u1ee7<\/p><\/li><li><p>Ng\u0103n ng\u1eeba c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0:<\/p><ul><li><p>Thi\u1ebfu d\u1eef li\u1ec7u ch\u1ea9n \u0111o\u00e1n<\/p><\/li><li><p>Th\u1ea5t b\u1ea1i ph\u00e1t hi\u1ec7n ng\u1eaft qu\u00e3ng<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >H\u1ec7 qu\u1ea3 th\u1ef1c t\u1ebf v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c x\u00e1c th\u1ef1c DDM\/EEPROM g\u1eafn li\u1ec1n tr\u1ef1c ti\u1ebfp v\u1edbi kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch \u0111a nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5, c\u00e1c switch t\u1eeb Cisco ho\u1eb7c Juniper Networks c\u00f3 th\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra c\u00e1c tr\u01b0\u1eddng ID nh\u00e0 s\u1ea3n xu\u1ea5t<\/p><\/li><li><p>X\u00e1c th\u1ef1c c\u1ea5u tr\u00fac EEPROM<\/p><\/li><li><p>H\u1ea1n ch\u1ebf s\u1eed d\u1ee5ng c\u00e1c m\u00f4-\u0111un kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 khi hi\u1ec7u su\u1ea5t quang h\u1ecdc ho\u00e0n h\u1ea3o, vi\u1ec7c m\u00e3 h\u00f3a EEPROM sai c\u0169ng c\u00f3 th\u1ec3 g\u00e2y ra th\u1ea5t b\u1ea1i ho\u00e0n to\u00e0n trong tri\u1ec3n khai.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u26a0\ufe0f C\u00e1c sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n l\u01b0u \u00fd<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>M\u00e3 h\u00f3a EEPROM sai<\/strong> \u2192 m\u00f4-\u0111un b\u1ecb switch t\u1eeb ch\u1ed1i<\/p><\/li><li><p><strong>Gi\u00e1 tr\u1ecb DDM ch\u01b0a \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n<\/strong> \u2192 ch\u1ea9n \u0111o\u00e1n sai l\u1ec7ch<\/p><\/li><li><p><strong>C\u00e1c tr\u01b0\u1eddng d\u1eef li\u1ec7u ch\u01b0a \u0111\u1ea7y \u0111\u1ee7<\/strong> \u2192 ch\u1ee9c n\u0103ng b\u1ecb gi\u1ea3m<\/p><\/li><li><p><strong>\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh I\u00b2C k\u00e9m<\/strong> \u2192 ph\u00e1t hi\u1ec7n m\u00f4-\u0111un ng\u1eaft qu\u00e3ng<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Vi\u1ec7c x\u00e1c th\u1ef1c DDM, DOM v\u00e0 EEPROM \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed9t m\u00f4-\u0111un SFP kh\u00f4ng ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng \u2014 m\u00e0 c\u00f2n th\u00f4ng minh, c\u00f3 th\u1ec3 truy v\u1ebft v\u00e0 ho\u00e0n to\u00e0n t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng th\u1ef1c t\u1ebf.<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c ki\u1ec3m tra n\u00e0y l\u00e0m c\u1ea7u n\u1ed1i gi\u1eefa hi\u1ec7u su\u1ea5t ph\u1ea7n c\u1ee9ng v\u00e0 t\u00edch h\u1ee3p h\u1ec7 th\u1ed1ng, do \u0111\u00f3 l\u00e0 m\u1ed9t ph\u1ea7n thi\u1ebft y\u1ebfu trong m\u1ecdi quy tr\u00ecnh ki\u1ec3m tra SFP chuy\u00ean nghi\u1ec7p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, ch\u00fang ta s\u1ebd chuy\u1ec3n sang ki\u1ec3m tra kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c switch v\u00e0 router th\u1ef1c t\u1ebf, n\u01a1i k\u1ebft qu\u1ea3 ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c trong \u0111i\u1ec1u ki\u1ec7n tri\u1ec3n khai th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udea9 Ki\u1ec3m tra kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c switch v\u00e0 router th\u1ef1c t\u1ebf<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 khi m\u1ed9t m\u00f4-\u0111un SFP v\u01b0\u1ee3t qua t\u1ea5t c\u1ea3 c\u00e1c b\u00e0i ki\u1ec3m tra quang h\u1ecdc, \u0111i\u1ec7n v\u00e0 ch\u1ea9n \u0111o\u00e1n, th\u00e0nh c\u00f4ng trong tri\u1ec3n khai th\u1ef1c t\u1ebf v\u1eabn ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi thi\u1ebft b\u1ecb m\u1ea1ng. S\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 firmware, m\u00e3 h\u00f3a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 k\u1ef3 v\u1ecdng h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 khi\u1ebfn m\u00f4-\u0111un th\u1ea5t b\u1ea1i ho\u1eb7c ho\u1ea1t \u0111\u1ed9ng d\u01b0\u1edbi m\u1ee9c t\u1ed1i \u01b0u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c m\u00f4-\u0111un SFP kh\u00f4ng ch\u1ec9 \u0111\u00e1p \u1ee9ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt m\u00e0 c\u00f2n ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady tr\u00ean c\u00e1c m\u1ea1ng \u0111a nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c84e465fcfc74118a82ad5a62fc126a8.jpg\" alt=\"Compatibility Testing With Real Switches and Routers\" class=\"wp-image-2850\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c84e465fcfc74118a82ad5a62fc126a8.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c84e465fcfc74118a82ad5a62fc126a8-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c84e465fcfc74118a82ad5a62fc126a8-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c84e465fcfc74118a82ad5a62fc126a8-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c84e465fcfc74118a82ad5a62fc126a8-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u01b0\u01a1ng th\u00edch nh\u00e0 s\u1ea3n xu\u1ea5t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>X\u00e1c th\u1ef1c r\u1eb1ng m\u00f4-\u0111un SFP ho\u1ea1t \u0111\u1ed9ng v\u1edbi c\u00e1c switch, router v\u00e0 b\u1ed9 thu ph\u00e1t t\u1eeb c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t kh\u00e1c nhau (v\u00ed d\u1ee5:, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476756.htm\">Cisco<\/a>, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477871.htm\">Juniper Networks<\/a>, <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/477868.htm\">Arista Networks<\/a>).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c \u0111i\u1ec3m c\u1ea7n ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Thi\u1ebft l\u1eadp li\u00ean k\u1ebft th\u00e0nh c\u00f4ng<\/p><\/li><li><p>Gi\u00e1 tr\u1ecb DDM\/DOM \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o ch\u00ednh x\u00e1c<\/p><\/li><li><p>Hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh tr\u00ean m\u1ecdi t\u1ed1c \u0111\u1ed9 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ng\u0103n ch\u1eb7n l\u1ed7i \u201cb\u1ed9 thu ph\u00e1t kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li><li><p>\u0110\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng c\u1eafm v\u00e0 ch\u1ea1y <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/interoperability-in-networking-meaning-standards-connectivity\/\">kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c<\/a> m\u00e0 kh\u00f4ng c\u1ea7n thay \u0111\u1ed5i c\u1ea5u h\u00ecnh<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >X\u00e1c th\u1ef1c kh\u1ea3 n\u0103ng c\u1eafm v\u00e0 ch\u1ea1y<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>\u0110\u1ea3m b\u1ea3o m\u00f4-\u0111un SFP c\u00f3 th\u1ec3 thay th\u1ebf n\u00f3ng v\u00e0 \u0111\u01b0\u1ee3c thi\u1ebft b\u1ecb ch\u1ee7 nh\u1eadn di\u1ec7n t\u1ef1 \u0111\u1ed9ng m\u00e0 kh\u00f4ng c\u1ea7n can thi\u1ec7p th\u1ee7 c\u00f4ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u1eb7p l\u1ea1i vi\u1ec7c c\u1eafm v\u00e0 r\u00fat m\u00f4-\u0111un tr\u00ean c\u00e1c m\u1eabu switch kh\u00e1c nhau<\/p><\/li><li><p>X\u00e1c minh vi\u1ec7c ph\u00e1t hi\u1ec7n v\u00e0 c\u1ea5u h\u00ecnh t\u1ef1 \u0111\u1ed9ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c nh\u1eadn \u0111\u1ed9 tin c\u1eady trong c\u00e1c m\u1ea1ng \u0111ang v\u1eadn h\u00e0nh<\/p><\/li><li><p>Ph\u00e1t hi\u1ec7n c\u00e1c h\u00e0nh vi firmware ho\u1eb7c ph\u1ea7n c\u1ee9ng c\u00f3 th\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c nh\u1eadn di\u1ec7n t\u1ef1 \u0111\u1ed9ng<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >H\u00e0nh vi firmware<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>C\u00e1c m\u00f4-\u0111un ch\u1ee9a firmware n\u1ed9i b\u1ed9 \u0111i\u1ec1u khi\u1ec3n m\u00e3 h\u00f3a t\u00edn hi\u1ec7u, ch\u1ea9n \u0111o\u00e1n v\u00e0 giao ti\u1ebfp v\u1edbi h\u1ec7 th\u1ed1ng ch\u1ee7.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c b\u00e0i ki\u1ec3m tra ch\u00ednh:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra xem firmware m\u00f4-\u0111un c\u00f3 b\u00e1o c\u00e1o \u0111\u00fang ID nh\u00e0 s\u1ea3n xu\u1ea5t, m\u00e3 linh ki\u1ec7n v\u00e0 kh\u1ea3 n\u0103ng hay kh\u00f4ng<\/p><\/li><li><p>Quan s\u00e1t vi\u1ec7c b\u00e1o c\u00e1o DDM\/DOM d\u01b0\u1edbi t\u1ea3i<\/p><\/li><li><p>\u0110\u1ea3m b\u1ea3o x\u1eed l\u00fd l\u1ed7i l\u00e0 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c trong qu\u00e1 tr\u00ecnh c\u1ea5p\/nh\u1ea5n l\u1ea1i ngu\u1ed3n ho\u1eb7c bi\u1ebfn \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ng\u0103n ng\u1eeba s\u1ef1 c\u1ed1 m\u1ea5t li\u00ean k\u1ebft b\u1ea5t ng\u1edd ho\u1eb7c gi\u1ea3m ch\u1ee9c n\u0103ng<\/p><\/li><li><p>Quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c tri\u1ec3n khai \u0111a nh\u00e0 cung c\u1ea5p ho\u1eb7c t\u1ed1c \u0111\u1ed9 cao<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Ki\u1ec3m tra kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>X\u00e1c th\u1ef1c hi\u1ec7u su\u1ea5t SFP trong c\u00e1c c\u1ea5u h\u00ecnh m\u1ea1ng th\u1ef1c t\u1ebf, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c switch x\u1ebfp ch\u1ed3ng<\/p><\/li><li><p>C\u00e1c c\u1ed5ng t\u1ed5ng h\u1ee3p<\/p><\/li><li><p>C\u00e1c b\u1ea3ng \u0111\u1ea5u n\u1ed1i s\u1ee3i quang ho\u1eb7c \u0111\u1ed3ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>K\u1ebft n\u1ed1i module qua c\u00e1c th\u01b0\u01a1ng hi\u1ec7u v\u00e0 m\u00f4 h\u00ecnh kh\u00e1c nhau<\/p><\/li><li><p>Th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i ki\u1ec3m tra l\u01b0u l\u01b0\u1ee3ng, \u0111o t\u1ef7 l\u1ec7 l\u1ed7i bit (BER) v\u00e0 gi\u00e1m s\u00e1t d\u01b0\u1edbi \u0111i\u1ec1u ki\u1ec7n t\u1ea3i th\u1ef1c t\u1ebf<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c nh\u1eadn t\u00ednh t\u01b0\u01a1ng th\u00edch m\u1ea1ng \u0111\u1ea7u cu\u1ed1i<\/p><\/li><li><p>\u0110\u1ea3m b\u1ea3o c\u00e1c module \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n v\u1eadn h\u00e0nh mong \u0111\u1ee3i tr\u00ean m\u1ecdi nh\u00e0 cung c\u1ea5p<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Ghi ch\u00fa th\u1ef1c t\u1ebf<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Ki\u1ec3m tra m\u00e3 h\u00f3a EEPROM<\/strong> \u2192 ID nh\u00e0 cung c\u1ea5p kh\u00f4ng kh\u1edbp th\u01b0\u1eddng ng\u0103n ch\u1eb7n vi\u1ec7c nh\u1eadn di\u1ec7n module<\/p><\/li><li><p><strong>Gi\u00e1m s\u00e1t DDM trong su\u1ed1t qu\u00e1 tr\u00ecnh ki\u1ec3m tra<\/strong> \u2192 module c\u00f3 th\u1ec3 v\u01b0\u1ee3t qua c\u00e1c b\u00e0i ki\u1ec3m tra quang h\u1ecdc nh\u01b0ng v\u1eabn th\u1ea5t b\u1ea1i tr\u00ean switch do gi\u1edbi h\u1ea1n firmware<\/p><\/li><li><p><strong>Ki\u1ec3m tra trong \u0111i\u1ec1u ki\u1ec7n c\u0103ng th\u1eb3ng<\/strong> \u2192 c\u1ea5p\/nh\u1ea5n l\u1ea1i ngu\u1ed3n, nhi\u1ec7t \u0111\u1ed9 c\u1ef1c \u0111oan v\u00e0 l\u01b0u l\u01b0\u1ee3ng k\u00e9o d\u00e0i<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Ki\u1ec3m tra t\u00ednh t\u01b0\u01a1ng th\u00edch thu h\u1eb9p kho\u1ea3ng c\u00e1ch gi\u1eefa x\u00e1c minh trong ph\u00f2ng th\u00ed nghi\u1ec7m v\u00e0 tri\u1ec3n khai th\u1ef1c t\u1ebf.<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 c\u00e1c module SFP hi\u1ec7u su\u1ea5t cao c\u0169ng c\u00f3 th\u1ec3 th\u1ea5t b\u1ea1i n\u1ebfu ch\u00fang kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi ph\u1ea7n c\u1ee9ng m\u1ea1ng. B\u1eb1ng c\u00e1ch x\u00e1c th\u1ef1c kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c nh\u00e0 cung c\u1ea5p, h\u00e0nh vi \u201cc\u1eafm v\u00e0o l\u00e0 ch\u1ea1y\u201d, \u0111\u1ed9 tin c\u1eady firmware v\u00e0 kh\u1ea3 n\u0103ng x\u1eed l\u00fd t\u1ea3i m\u1ea1ng, k\u1ef9 s\u01b0 \u0111\u1ea3m b\u1ea3o c\u00e1c module s\u1eb5n s\u00e0ng tri\u1ec3n khai, an to\u00e0n v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, ch\u00fang ta s\u1ebd \u0111\u1ec1 c\u1eadp \u0111\u1ebfn ki\u1ec3m tra m\u00f4i tr\u01b0\u1eddng v\u00e0 \u0111\u1ed9 tin c\u1eady, bao g\u1ed3m chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m v\u00e0 ki\u1ec3m tra \u201cburn-in\u201d, nh\u1eb1m ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 ch\u1ec9 xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi \u00e1p l\u1ef1c v\u1eadn h\u00e0nh d\u00e0i h\u1ea1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udea9 Ki\u1ec3m tra m\u00f4i tr\u01b0\u1eddng v\u00e0 \u0111\u1ed9 tin c\u1eady<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi v\u01b0\u1ee3t qua c\u00e1c b\u00e0i ki\u1ec3m tra quang h\u1ecdc, \u0111i\u1ec7n v\u00e0 t\u01b0\u01a1ng th\u00edch, c\u00e1c module SFP c\u0169ng ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c v\u1ec1 m\u1eb7t m\u00f4i tr\u01b0\u1eddng v\u00e0 \u0111\u1ed9 tin c\u1eady d\u00e0i h\u1ea1n. C\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t\u2014<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-a-data-center\/\">trung t\u00e2m d\u1eef li\u1ec7u<br><\/a>, t\u1ee7 vi\u1ec5n th\u00f4ng ho\u1eb7c t\u1ee7 ngo\u00e0i tr\u1eddi\u2014n\u01a1i dao \u0111\u1ed9ng nhi\u1ec7t \u0111\u1ed9, rung \u0111\u1ed9ng v\u00e0 \u0111\u1ed9 \u1ea9m c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t ho\u1eb7c g\u00e2y h\u1ecfng s\u1edbm. Ki\u1ec3m tra m\u00f4i tr\u01b0\u1eddng \u0111\u1ea3m b\u1ea3o module duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh d\u01b0\u1edbi \u00e1p l\u1ef1c.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bfdfe892e0c74f12b96718b8a16c47f1.jpg\" alt=\"Environmental and Reliability Testing\" class=\"wp-image-2851\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bfdfe892e0c74f12b96718b8a16c47f1.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bfdfe892e0c74f12b96718b8a16c47f1-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bfdfe892e0c74f12b96718b8a16c47f1-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bfdfe892e0c74f12b96718b8a16c47f1-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bfdfe892e0c74f12b96718b8a16c47f1-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>Ph\u01a1i module SFP \u1edf c\u00e1c m\u1ee9c nhi\u1ec7t \u0111\u1ed9 c\u1ef1c cao v\u00e0 c\u1ef1c th\u1ea5p l\u1eb7p \u0111i l\u1eb7p l\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ee5c \u0111\u00edch:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>X\u00e1c minh hi\u1ec7u su\u1ea5t tr\u00ean to\u00e0n b\u1ed9 d\u1ea3i nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng<\/p><\/li><li><p>Ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 tr\u00f4i nhi\u1ec7t, suy gi\u1ea3m t\u00edn hi\u1ec7u ho\u1eb7c l\u1ed7i EEPROM<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng bu\u1ed3ng nhi\u1ec7t \u0111\u1ec3 lu\u00e2n chuy\u1ec3n gi\u1eefa gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9 t\u1ed1i thi\u1ec3u v\u00e0 t\u1ed1i \u0111a (v\u00ed d\u1ee5: \u221240\u00b0C \u0111\u1ebfn +85\u00b0C \u0111\u1ed1i v\u1edbi module c\u00f4ng nghi\u1ec7p)<\/p><\/li><li><p>Gi\u00e1m s\u00e1t c\u00f4ng su\u1ea5t Tx\/Rx, BER v\u00e0 c\u00e1c gi\u00e1 tr\u1ecb DDM\/DOM trong su\u1ed1t qu\u00e1 tr\u00ecnh lu\u00e2n chuy\u1ec3n<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Ki\u1ec3m tra \u0111\u1ed9 \u1ea9m<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>\u0110\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a module trong m\u00f4i tr\u01b0\u1eddng \u0111\u1ed9 \u1ea9m cao m\u00e0 kh\u00f4ng x\u1ea3y ra s\u1ef1 c\u1ed1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ee5c \u0111\u00edch:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nh\u1eadn di\u1ec7n nguy c\u01a1 \u0103n m\u00f2n t\u1ea1i c\u00e1c \u0111\u1ea7u n\u1ed1i ho\u1eb7c m\u1ea1ch b\u00ean trong<\/p><\/li><li><p>X\u00e1c nh\u1eadn t\u00ednh \u1ed5n \u0111\u1ecbnh quang h\u1ecdc v\u00e0 \u0111i\u1ec7n d\u01b0\u1edbi \u00e1p l\u1ef1c \u0111\u1ed9 \u1ea9m<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110\u1eb7t module v\u00e0o bu\u1ed3ng \u0111\u1ed9 \u1ea9m ki\u1ec3m so\u00e1t (v\u00ed d\u1ee5: 85% RH \u1edf 85\u00b0C)<\/p><\/li><li><p>Ti\u1ebfn h\u00e0nh \u0111o quang h\u1ecdc v\u00e0 BER \u0111\u1ecbnh k\u1ef3<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Ki\u1ec3m tra rung \u0111\u1ed9ng v\u00e0 s\u1ed1c c\u01a1 h\u1ecdc<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>Ki\u1ec3m tra \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc c\u1ee7a module tr\u01b0\u1edbc c\u00e1c \u1ee9ng su\u1ea5t c\u01a1 h\u1ecdc nh\u01b0 v\u1eadn chuy\u1ec3n, thao t\u00e1c ho\u1eb7c rung \u0111\u1ed9ng t\u1ee7 rack.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ee5c \u0111\u00edch:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ph\u00e1t hi\u1ec7n hi\u1ec7n t\u01b0\u1ee3ng l\u1ecfng l\u1ebbo c\u00e1c th\u00e0nh ph\u1ea7n b\u00ean trong<\/p><\/li><li><p>Ng\u0103n ng\u1eeba m\u1ea5t k\u1ebft n\u1ed1i ng\u1eaft qu\u00e3ng ho\u1eb7c suy gi\u1ea3m t\u00edn hi\u1ec7u<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng b\u00e0n rung theo c\u00e1c ti\u00eau chu\u1ea9n ng\u00e0nh<\/p><\/li><li><p>Ki\u1ec3m tra \u0111\u1ea7u ra quang h\u1ecdc v\u00e0 hi\u1ec7u n\u0103ng \u0111i\u1ec7n sau ki\u1ec3m tra<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Ki\u1ec3m tra \u201cburn-in\u201d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>V\u1eadn h\u00e0nh li\u00ean t\u1ee5c module trong th\u1eddi gian d\u00e0i d\u01b0\u1edbi t\u1ea3i \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ee5c \u0111\u00edch:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ph\u00e1t hi\u1ec7n c\u00e1c s\u1ef1 c\u1ed1 trong giai \u0111o\u1ea1n \u0111\u1ea7u \u0111\u1eddi (t\u1eed vong s\u01a1 sinh)<\/p><\/li><li><p>\u1ed4n \u0111\u1ecbnh c\u00e1c th\u00e0nh ph\u1ea7n tr\u01b0\u1edbc khi tri\u1ec3n khai<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>V\u1eadn h\u00e0nh module SFP \u1edf t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u t\u1ed1i \u0111a v\u00e0 nhi\u1ec7t \u0111\u1ed9 cao trong 48\u201372 gi\u1edd<\/p><\/li><li><p>Gi\u00e1m s\u00e1t BER, gi\u00e1 tr\u1ecb DDM v\u00e0 c\u00f4ng su\u1ea5t quang trong su\u1ed1t b\u00e0i ki\u1ec3m tra<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Ki\u1ec3m tra \u1ee9ng su\u1ea5t nhi\u1ec7t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u00e0 g\u00ec:<\/strong><br\/>\u00c1p d\u1ee5ng c\u00e1c thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 nhanh cho module trong khi \u0111ang ho\u1ea1t \u0111\u1ed9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ee5c \u0111\u00edch:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ph\u00e1t hi\u1ec7n c\u00e1c s\u1ef1 c\u1ed1 do nhi\u1ec7t g\u00e2y ra trong <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/laser-types-in-optical-transceiver-modules\/\">laser<\/a>, quang h\u1ecdc ho\u1eb7c \u0111i\u1ec7n t\u1eed<\/p><\/li><li><p>\u0110\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady trong qu\u00e1 tr\u00ecnh c\u1ea5p\/nh\u1ea5n l\u1ea1i ngu\u1ed3n ho\u1eb7c thay \u0111\u1ed5i m\u00f4i tr\u01b0\u1eddng \u0111\u1ed9t ng\u1ed9t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u00c1p d\u1ee5ng c\u00e1c d\u1ea3i t\u0103ng\/gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 ki\u1ec3m so\u00e1t trong bu\u1ed3ng trong khi li\u00ean t\u1ee5c gi\u00e1m s\u00e1t c\u00f4ng su\u1ea5t Tx\/Rx, BER v\u00e0 \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u26a0\ufe0f C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n l\u01b0u \u00fd ch\u00ednh<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Ki\u1ec3m tra m\u00f4i tr\u01b0\u1eddng b\u1ed5 sung cho vi\u1ec7c x\u00e1c minh trong ph\u00f2ng th\u00ed nghi\u1ec7m<\/strong>, ph\u00e1t hi\u1ec7n c\u00e1c s\u1ef1 c\u1ed1 kh\u00f4ng th\u1ec3 th\u1ea5y trong c\u00e1c b\u00e0i ki\u1ec3m tra t\u0129nh<\/p><\/li><li><p><strong>C\u00e1c b\u00e0i ki\u1ec3m tra \u1ee9ng su\u1ea5t m\u00f4 ph\u1ecfng c\u00e1c t\u00ecnh hu\u1ed1ng tri\u1ec3n khai t\u1ed3i t\u1ec7 nh\u1ea5t<\/strong>, n\u00e2ng cao \u0111\u1ed9 tin c\u1eady c\u1ee7a module<\/p><\/li><li><p><strong>T\u00edch h\u1ee3p v\u1edbi gi\u00e1m s\u00e1t DDM\/DOM<\/strong> cung c\u1ea5p th\u00f4ng tin chi ti\u1ebft theo th\u1eddi gian th\u1ef1c trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Ki\u1ec3m tra m\u00f4i tr\u01b0\u1eddng v\u00e0 \u0111\u1ed9 tin c\u1eady \u0111\u1ea3m b\u1ea3o c\u00e1c module SFP duy tr\u00ec tr\u1ea1ng th\u00e1i \u1ed5n \u0111\u1ecbnh v\u00e0 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf, gi\u1ea3m thi\u1ec3u r\u1ee7i ro x\u1ea3y ra s\u1ef1 c\u1ed1 b\u1ea5t ng\u1edd, ng\u1eebng ho\u1ea1t \u0111\u1ed9ng v\u00e0 gi\u00e1n \u0111o\u1ea1n m\u1ea1ng t\u1ed1n k\u00e9m.<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, ch\u00fang ta s\u1ebd t\u1ed5ng k\u1ebft t\u1ea5t c\u1ea3 quy tr\u00ecnh ki\u1ec3m tra v\u00e0 cung c\u1ea5p danh s\u00e1ch ki\u1ec3m tra th\u1ef1c t\u1ebf \u0111\u1ec3 l\u1ef1a ch\u1ecdn c\u00e1c <a target=\"_self\" href=\"https:\/\/www.l-p.com\/products\/476763.htm\">SFP c\u1ee7a b\u00ean th\u1ee9 ba<\/a> \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c \u0111\u1ea7y \u0111\u1ee7 nh\u1eb1m tri\u1ec3n khai.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udea9 C\u00e1c s\u1ef1 c\u1ed1 ki\u1ec3m tra SFP ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 trong ph\u00f2ng th\u00ed nghi\u1ec7m chuy\u00ean nghi\u1ec7p, ki\u1ec3m tra SFP th\u01b0\u1eddng ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t m\u1ea1ng. Vi\u1ec7c x\u00e1c \u0111\u1ecbnh v\u00e0 kh\u1eafc ph\u1ee5c s\u1edbm c\u00e1c v\u1ea5n \u0111\u1ec1 n\u00e0y gi\u00fap \u0111\u1ea3m b\u1ea3o tri\u1ec3n khai \u0111\u00e1ng tin c\u1eady v\u00e0 ng\u0103n ng\u1eeba ng\u1eebng ho\u1ea1t \u0111\u1ed9ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng s\u1ef1 c\u1ed1 th\u01b0\u1eddng g\u1eb7p nh\u1ea5t trong ki\u1ec3m tra SFP c\u00f9ng c\u00e1c b\u01b0\u1edbc th\u1ef1c t\u1ebf \u0111\u1ec3 gi\u1ea3i quy\u1ebft.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/91bc89bce1ab4cb895900c7e76237cb0.jpg\" alt=\"Common SFP Test Problems and How to Troubleshoot Them\" class=\"wp-image-2852\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/91bc89bce1ab4cb895900c7e76237cb0.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/91bc89bce1ab4cb895900c7e76237cb0-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/91bc89bce1ab4cb895900c7e76237cb0-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/91bc89bce1ab4cb895900c7e76237cb0-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/91bc89bce1ab4cb895900c7e76237cb0-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Li\u00ean k\u1ebft th\u1ea5t b\u1ea1i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Module kh\u00f4ng thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c li\u00ean k\u1ebft<\/p><\/li><li><p>\u0110\u00e8n LED c\u1ed5ng v\u1eabn t\u1eaft ho\u1eb7c m\u00e0u cam<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00e3 h\u00f3a nh\u00e0 cung c\u1ea5p sai ho\u1eb7c module kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/p><\/li><li><p>\u0110\u1ea7u n\u1ed1i\/s\u1ee3i quang b\u1ea9n ho\u1eb7c h\u01b0 h\u1ecfng<\/p><\/li><li><p>C\u00f4ng su\u1ea5t quang n\u1eb1m ngo\u00e0i ph\u1ea1m vi ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c b\u01b0\u1edbc kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra m\u00e3 h\u00f3a EEPROM v\u00e0 th\u00f4ng tin DDM\/DOM<\/p><\/li><li><p>L\u00e0m s\u1ea1ch v\u00e0 ki\u1ec3m tra <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/common-fiber-connector-types-optical-transceivers\/\">c\u00e1p quang<\/a><\/p><\/li><li><p>X\u00e1c minh m\u1ee9c c\u00f4ng su\u1ea5t Tx\/Rx b\u1eb1ng m\u00e1y \u0111o c\u00f4ng su\u1ea5t quang<\/p><\/li><li><p>Ki\u1ec3m tra module tr\u00ean m\u1ed9t switch \u0111\u00e3 bi\u1ebft l\u00e0 t\u01b0\u01a1ng th\u00edch<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00f4ng su\u1ea5t quang th\u1ea5p<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00f4ng su\u1ea5t ph\u00e1t (Tx) th\u1ea5p h\u01a1n th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/p><\/li><li><p>\u0110\u1ed9 d\u1ef1 ph\u00f2ng li\u00ean k\u1ebft gi\u1ea3m ho\u1eb7c l\u1ed7i ng\u1eaft qu\u00e3ng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Laser suy gi\u1ea3m ho\u1eb7c l\u1ec7ch h\u01b0\u1edbng<\/p><\/li><li><p>T\u1ed5n th\u1ea5t do u\u1ed1n s\u1ee3i quang ho\u1eb7c nhi\u1ec5m b\u1ea9n \u0111\u1ea7u n\u1ed1i<\/p><\/li><li><p>Khuy\u1ebft t\u1eadt s\u1ea3n xu\u1ea5t<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c b\u01b0\u1edbc kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u0110o c\u00f4ng su\u1ea5t ph\u00e1t (Tx) b\u1eb1ng m\u00e1y \u0111o c\u00f4ng su\u1ea5t quang<\/p><\/li><li><p>Ki\u1ec3m tra \u0111\u01b0\u1eddng d\u1eabn s\u1ee3i quang v\u00e0 c\u00e1c \u0111\u1ea7u n\u1ed1i<\/p><\/li><li><p>Thay th\u1ebf b\u1eb1ng module \u0111\u00e3 bi\u1ebft l\u00e0 t\u1ed1t \u0111\u1ec3 c\u00f4 l\u1eadp s\u1ef1 c\u1ed1<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110\u1ed9 nh\u1ea1y b\u1ed9 thu k\u00e9m<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>T\u1ef7 l\u1ec7 l\u1ed7i bit (BER) cao d\u00f9 c\u00f4ng su\u1ea5t ph\u00e1t (Tx) \u0111\u00fang th\u00f4ng s\u1ed1<\/p><\/li><li><p>M\u1ea5t t\u00edn hi\u1ec7u tr\u00ean kho\u1ea3ng c\u00e1ch ng\u1eafn h\u01a1n so v\u1edbi k\u1ef3 v\u1ecdng<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>B\u1ed9 thu quang (photodiode) suy gi\u1ea3m<\/p><\/li><li><p>T\u1ed5n th\u1ea5t li\u00ean k\u1ebft qu\u00e1 m\u1ee9c ho\u1eb7c t\u1ed5n th\u1ea5t ch\u00e8n \u0111\u1ea7u n\u1ed1i qu\u00e1 cao<\/p><\/li><li><p>C\u00e0i \u0111\u1eb7t ng\u01b0\u1ee1ng b\u1ed9 thu kh\u00f4ng ch\u00ednh x\u00e1c<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c b\u01b0\u1edbc kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng b\u1ed9 \u0111i\u1ec1u ch\u1ec9nh bi\u1ebfn thi\u00ean quang (VOA) \u0111\u1ec3 ki\u1ec3m tra \u0111\u1ed9 nh\u1ea1y trong \u0111i\u1ec1u ki\u1ec7n ki\u1ec3m so\u00e1t<\/p><\/li><li><p>Ki\u1ec3m tra \u0111\u1ea7u n\u1ed1i v\u00e0 suy hao s\u1ee3i quang<\/p><\/li><li><p>So s\u00e1nh hi\u1ec7u n\u0103ng v\u1edbi module chu\u1ea9n<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Qu\u00e1 nhi\u1ec7t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nhi\u1ec7t \u0111\u1ed9 module t\u0103ng cao trong c\u00e1c gi\u00e1 tr\u1ecb \u0111\u1ecdc t\u1eeb DDM\/DOM<\/p><\/li><li><p>C\u1ed5ng t\u1eaft ho\u1eb7c hi\u1ec7u n\u0103ng gi\u1ea3m<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>L\u01b0u l\u01b0\u1ee3ng kh\u00ed kh\u00f4ng \u0111\u1ee7 ho\u1eb7c kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t k\u00e9m<\/p><\/li><li><p>Laser c\u00f4ng su\u1ea5t cao ho\u1ea1t \u0111\u1ed9ng v\u01b0\u1ee3t th\u00f4ng s\u1ed1 thi\u1ebft k\u1ebf<\/p><\/li><li><p>\u1ee8ng su\u1ea5t nhi\u1ec7t trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c b\u01b0\u1edbc kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng v\u00e0 l\u01b0u l\u01b0\u1ee3ng kh\u00ed trong h\u1ec7 th\u1ed1ng th\u1eed nghi\u1ec7m<\/p><\/li><li><p>X\u00e1c minh gi\u00e1 tr\u1ecb nhi\u1ec7t \u0111\u1ed9 module th\u00f4ng qua DDM<\/p><\/li><li><p>\u0110\u1ea3m b\u1ea3o module ho\u1ea1t \u0111\u1ed9ng trong gi\u1edbi h\u1ea1n \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Sai l\u1ec7ch EEPROM ho\u1eb7c m\u00e3 h\u00f3a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bi\u1ec3u hi\u1ec7n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Switch b\u00e1o l\u1ed7i \u201ctransceiver kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3\u201d<\/p><\/li><li><p>Module kh\u00f4ng ph\u00e1t hi\u1ec7n t\u1ef1 \u0111\u1ed9ng (plug-and-play)<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u00e3 nh\u00e0 cung c\u1ea5p, m\u00e3 s\u1ed1 linh ki\u1ec7n ho\u1eb7c m\u00e3 tu\u00e2n th\u1ee7 kh\u00f4ng \u0111\u00fang<\/p><\/li><li><p>B\u1ed9 nh\u1edb EEPROM b\u1ecb h\u1ecfng<\/p><\/li><li><p>Kh\u00f4ng t\u01b0\u01a1ng th\u00edch firmware gi\u1eefa module v\u00e0 switch<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c b\u01b0\u1edbc kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng b\u1ed9 ph\u00e2n t\u00edch I\u00b2C\/EEPROM \u0111\u1ec3 ki\u1ec3m tra d\u1eef li\u1ec7u<\/p><\/li><li><p>So s\u00e1nh v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 cung c\u1ea5p<\/p><\/li><li><p>Ghi l\u1ea1i (re-flash) ho\u1eb7c thay th\u1ebf module n\u1ebfu m\u00e3 h\u00f3a kh\u00f4ng \u0111\u00fang<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Ph\u1ea7n l\u1edbn c\u00e1c s\u1ef1 c\u1ed1 SFP c\u00f3 th\u1ec3 ph\u00f2ng ng\u1eeba \u0111\u01b0\u1ee3c nh\u1edd ki\u1ec3m tra v\u00e0 x\u00e1c th\u1ef1c h\u1ec7 th\u1ed1ng.<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p c\u1ea9n th\u1eadn c\u00e1c ki\u1ec3m tra quang h\u1ecdc, \u0111i\u1ec7n, m\u00f4i tr\u01b0\u1eddng v\u00e0 EEPROM, k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 nhanh ch\u00f3ng x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 v\u00e0 tr\u00e1nh c\u00e1c v\u1ea5n \u0111\u1ec1 tri\u1ec3n khai. Vi\u1ec7c duy tr\u00ec quy tr\u00ecnh t\u1eebng b\u01b0\u1edbc <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/sfp-troubleshooting-quick-checklist\/\">Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1<\/a> gi\u00fap ti\u1ebft ki\u1ec7m th\u1eddi gian, ng\u0103n ng\u1eeba gi\u00e1n \u0111o\u1ea1n t\u1ed1n k\u00e9m v\u00e0 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady m\u1ea1ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udea9 C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p: C\u00e1ch ki\u1ec3m tra transceiver SFP<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/03388b6a3f9f46c1a1f6a6dc944cc594.jpg\" alt=\"FAQ: How to Test SFP Transceiver\" class=\"wp-image-2853\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/03388b6a3f9f46c1a1f6a6dc944cc594.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/03388b6a3f9f46c1a1f6a6dc944cc594-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/03388b6a3f9f46c1a1f6a6dc944cc594-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/03388b6a3f9f46c1a1f6a6dc944cc594-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/03388b6a3f9f46c1a1f6a6dc944cc594-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 1. Thi\u1ebft b\u1ecb n\u00e0o \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ki\u1ec3m tra SFP?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tr\u1ea3 l\u1eddi:<\/strong><br\/>M\u1ed9t h\u1ec7 th\u1ed1ng ki\u1ec3m tra SFP \u0111\u1ea7y \u0111\u1ee7 s\u1eed d\u1ee5ng nhi\u1ec1u thi\u1ebft b\u1ecb:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>M\u00e1y \u0111o c\u00f4ng su\u1ea5t quang (OPM)<\/strong> \u2192 \u0110o c\u00f4ng su\u1ea5t ph\u00e1t (Tx)\/thu (Rx)<\/p><\/li><li><p><strong>M\u00e1y ph\u00e2n t\u00edch ph\u1ed5 quang (OSA)<\/strong> \u2192 Ph\u00e2n t\u00edch b\u01b0\u1edbc s\u00f3ng v\u00e0 ph\u1ed5<\/p><\/li><li><p><strong>B\u1ed9 suy hao quang h\u1ecdc c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh (VOA)<\/strong> \u2192 Ki\u1ec3m tra \u0111\u1ed9 nh\u1ea1y<\/p><\/li><li><p><strong>M\u00e1y ki\u1ec3m tra t\u1ef7 l\u1ec7 l\u1ed7i bit (BERT)<\/strong> \u2192 T\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u<\/p><\/li><li><p><strong>Dao \u0111\u1ed9ng k\u00fd t\u1ed1c \u0111\u1ed9 cao \/ DCA<\/strong> \u2192 Bi\u1ec3u \u0111\u1ed3 m\u1eaft, nhi\u1ec5u th\u1eddi gian (jitter), th\u1eddi gian t\u0103ng\/th\u1eddi gian gi\u1ea3m<\/p><\/li><li><p><strong>B\u1ed9 ph\u00e2n t\u00edch I\u00b2C\/EEPROM<\/strong> \u2192 Ki\u1ec3m tra DDM\/DOM v\u00e0 b\u1ed9 nh\u1edb<\/p><\/li><li><p><strong>Bo m\u1ea1ch th\u1eed nghi\u1ec7m host ho\u1eb7c c\u00e1c switch th\u1ef1c t\u1ebf<\/strong> \u2192 Kh\u1ea3 n\u0103ng c\u1eafm v\u00e0 ch\u1ea1y (plug-and-play) v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c (interoperability)<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>M\u1ed7i thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng t\u1eadp trung v\u00e0o m\u1ed9t kh\u00eda c\u1ea1nh c\u1ee5 th\u1ec3 c\u1ee7a hi\u1ec7u n\u0103ng module, t\u1ea1o th\u00e0nh m\u1ed9t h\u1ec7 sinh th\u00e1i x\u00e1c nh\u1eadn \u0111\u1ea7y \u0111\u1ee7.<\/p><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 2. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ki\u1ec3m tra xem m\u1ed9t module SFP c\u00f3 b\u1ecb l\u1ed7i hay kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tr\u1ea3 l\u1eddi:<\/strong><br\/>Ki\u1ec3m tra c\u00e1c d\u1ea5u hi\u1ec7u sau <strong>ch\u1ec9 b\u00e1o l\u1ed7i ph\u1ed5 bi\u1ebfn<\/strong>:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p>Kh\u00f4ng c\u00f3 k\u1ebft n\u1ed1i ho\u1eb7c \u0111\u00e8n LED c\u1ed5ng v\u1eabn t\u1eaft<\/p><\/li><li><p>C\u00f4ng su\u1ea5t ph\u00e1t (Tx) n\u1eb1m ngo\u00e0i th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt (qu\u00e1 th\u1ea5p ho\u1eb7c qu\u00e1 cao)<\/p><\/li><li><p>\u0110\u1ed9 nh\u1ea1y thu (Rx) kh\u00f4ng \u0111\u1ea1t y\u00eau c\u1ea7u trong c\u00e1c b\u00e0i ki\u1ec3m tra BER<\/p><\/li><li><p>Vi ph\u1ea1m bi\u1ec3u \u0111\u1ed3 m\u1eaft ho\u1eb7c nhi\u1ec5u th\u1eddi gian (jitter) cao<\/p><\/li><li><p>Gi\u00e1 tr\u1ecb \u0111\u1ecdc DDM\/DOM n\u1eb1m ngo\u00e0i d\u1ea3i nhi\u1ec7t \u0111\u1ed9, \u0111i\u1ec7n \u00e1p ho\u1eb7c quang h\u1ecdc b\u00ecnh th\u01b0\u1eddng<\/p><\/li><li><p>Sai m\u00e3 EEPROM g\u00e2y ra l\u1ed7i ph\u00e1t hi\u1ec7n tr\u00ean switch<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1eb9o ch\u1ea9n \u0111o\u00e1n s\u1ef1 c\u1ed1:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>So s\u00e1nh c\u00e1c gi\u00e1 tr\u1ecb \u0111\u1ecdc t\u1eeb module v\u1edbi m\u1ed9t module tham chi\u1ebfu t\u1ed1t \u0111\u00e3 bi\u1ebft<\/p><\/li><li><p>Ki\u1ec3m tra \u0111\u1ea7u n\u1ed1i, c\u00e1p quang v\u00e0 giao di\u1ec7n host \u0111\u1ec3 lo\u1ea1i tr\u1eeb c\u00e1c nguy\u00ean nh\u00e2n b\u00ean ngo\u00e0i<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 3. T\u00f4i c\u00f3 th\u1ec3 ki\u1ec3m tra module SFP m\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft b\u1ecb chuy\u00ean d\u1ee5ng kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tr\u1ea3 l\u1eddi:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>C\u00e1c b\u00e0i ki\u1ec3m tra k\u1ebft n\u1ed1i c\u01a1 b\u1ea3n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng <strong>c\u1ed5ng switch v\u00e0 \u0111\u00e8n LED<\/strong>, nh\u01b0ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ch\u1ec9 cho bi\u1ebft module c\u00f3 c\u1ea5p ngu\u1ed3n v\u00e0 thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i hay kh\u00f4ng.<\/p><\/li><li><p><strong>Vi\u1ec7c x\u00e1c nh\u1eadn hi\u1ec7u n\u0103ng ch\u00ednh x\u00e1c \u0111\u00f2i h\u1ecfi c\u00e1c thi\u1ebft b\u1ecb chuy\u00ean nghi\u1ec7p<\/strong> nh\u01b0 m\u00e1y \u0111o c\u00f4ng su\u1ea5t quang (OPM), BERT v\u00e0 DCA.<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Ki\u1ec3m tra tr\u1ef1c quan v\u00e0 tr\u1ea1ng th\u00e1i k\u1ebft n\u1ed1i \u0111\u01a1n thu\u1ea7n kh\u00f4ng th\u1ec3 ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u ho\u1eb7c suy gi\u1ea3m quang h\u1ecdc.<\/p><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 4. C\u00e1ch nhanh nh\u1ea5t \u0111\u1ec3 x\u00e1c minh ch\u1ee9c n\u0103ng c\u1ee7a module SFP l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tr\u1ea3 l\u1eddi:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ch\u00e8n module v\u00e0o m\u1ed9t <strong>switch ho\u1eb7c bo m\u1ea1ch host t\u01b0\u01a1ng th\u00edch<\/strong><\/p><\/li><li><p>Ki\u1ec3m tra <strong>thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i v\u00e0 \u0111\u1ecdc gi\u00e1 tr\u1ecb DDM\/DOM<\/strong><\/p><\/li><li><p>\u0110o <strong>c\u00f4ng su\u1ea5t quang ph\u00e1t\/thu (Tx\/Rx)<\/strong> n\u1ebfu c\u00f3 th\u1ec3<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cung c\u1ea5p ki\u1ec3m tra s\u01a1 b\u1ed9 nhanh ch\u00f3ng, nh\u01b0ng n\u00ean ti\u1ebfn h\u00e0nh ki\u1ec3m tra \u0111\u1ea7y \u0111\u1ee7 \u0111\u1ed1i v\u1edbi vi\u1ec7c x\u00e1c nh\u1eadn \u1edf m\u1ee9c s\u1ea3n xu\u1ea5t ho\u1eb7c tri\u1ec3n khai.<\/p><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u00e2u h\u1ecfi 5. C\u00e1c module SFP n\u00ean \u0111\u01b0\u1ee3c ki\u1ec3m tra bao l\u00e2u m\u1ed9t l\u1ea7n?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tr\u1ea3 l\u1eddi:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Module m\u1edbi:<\/strong> Lu\u00f4n th\u1ef1c hi\u1ec7n ki\u1ec3m tra quang h\u1ecdc, \u0111i\u1ec7n v\u00e0 t\u01b0\u01a1ng th\u00edch \u0111\u1ea7y \u0111\u1ee7 tr\u01b0\u1edbc khi tri\u1ec3n khai<\/p><\/li><li><p><strong>Module \u0111\u00e3 l\u1eafp \u0111\u1eb7t:<\/strong> Ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 gi\u00e1 tr\u1ecb DDM\/DOM v\u00e0 hi\u1ec7u n\u0103ng k\u1ebft n\u1ed1i<\/p><\/li><li><p><strong>Sau khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng ho\u1eb7c c\u1eadp nh\u1eadt firmware:<\/strong> X\u00e1c nh\u1eadn l\u1ea1i \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady li\u00ean t\u1ee5c<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Gi\u00e1m s\u00e1t \u0111\u1ecbnh k\u1ef3 gi\u00fap ng\u0103n ng\u1eeba s\u1ef1 c\u1ed1 b\u1ea5t ng\u1edd trong h\u1ea1 t\u1ea7ng m\u1ea1ng quan tr\u1ecdng.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udea9 C\u00e1c th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t cho quy tr\u00ecnh ki\u1ec3m tra SFP \u0111\u00e1ng tin c\u1eady<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c t\u1ea1o ra m\u1ed9t quy tr\u00ecnh ki\u1ec3m tra SFP nh\u1ea5t qu\u00e1n v\u00e0 chuy\u00ean nghi\u1ec7p \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c module \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n quang, \u0111i\u1ec7n, ch\u1ea9n \u0111o\u00e1n v\u00e0 m\u00f4i tr\u01b0\u1eddng, \u0111\u1ed3ng th\u1eddi gi\u1ea3m thi\u1ec3u r\u1ee7i ro th\u1ea5t b\u1ea1i khi tri\u1ec3n khai. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 h\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc, bao g\u1ed3m danh s\u00e1ch ki\u1ec3m tra \u0111\u1ea1t\/kh\u00f4ng \u0111\u1ea1t v\u00e0 c\u00e1c khuy\u1ebfn ngh\u1ecb ki\u1ec3m tra bi\u00ean d\u1ef1 ph\u00f2ng d\u00e0nh cho ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a793077a60f44afb9fa8b422dbedc9ea.jpg\" alt=\"Best Practices for a Reliable SFP Testing Workflow\" class=\"wp-image-2854\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a793077a60f44afb9fa8b422dbedc9ea.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a793077a60f44afb9fa8b422dbedc9ea-300x169.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a793077a60f44afb9fa8b422dbedc9ea-1024x576.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a793077a60f44afb9fa8b422dbedc9ea-768x432.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/a793077a60f44afb9fa8b422dbedc9ea-18x10.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >Quy tr\u00ecnh l\u00e0m vi\u1ec7c trong ph\u00f2ng th\u00ed nghi\u1ec7m t\u1eebng b\u01b0\u1edbc<\/h3>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p><strong>Ki\u1ec3m tra tr\u1ef1c quan &amp; Ki\u1ec3m tra s\u01a1 b\u1ed9 ban \u0111\u1ea7u<\/strong><\/p><ul><li><p>Ki\u1ec3m tra module SFP v\u1ec1 h\u01b0 h\u1ecfng v\u1eadt l\u00fd ho\u1eb7c nhi\u1ec5m b\u1ea9n<\/p><\/li><li><p>X\u00e1c nh\u1eadn m\u00e3 h\u00f3a EEPROM, ID nh\u00e0 cung c\u1ea5p v\u00e0 s\u1ed1 ph\u1ea7n t\u1eed<\/p><\/li><\/ul><\/li><li><p><strong>Ki\u1ec3m tra quang h\u1ecdc<\/strong><\/p><ul><li><p>\u0110o c\u00f4ng su\u1ea5t ph\u00e1t (Tx), \u0111\u1ed9 nh\u1ea1y thu (Rx), b\u01b0\u1edbc s\u00f3ng v\u00e0 t\u1ef7 s\u1ed1 t\u1eaft m\u1edf (extinction ratio)<\/p><\/li><li><p>S\u1eed d\u1ee5ng m\u00e1y \u0111o c\u00f4ng su\u1ea5t quang (OPM), m\u00e1y ph\u00e2n t\u00edch quang ph\u1ed5 (OSA) v\u00e0 b\u1ed9 suy hao quang bi\u1ebfn \u0111\u1ed5i (VOA)<\/p><\/li><li><p>Ghi l\u1ea1i bi\u1ec3u \u0111\u1ed3 m\u1eaft (eye diagrams) v\u00e0 ki\u1ec3m tra bi\u00ean d\u1ef1 ph\u00f2ng t\u1ed5n hao quang<\/p><\/li><\/ul><\/li><li><p><strong>Ki\u1ec3m tra \u0111i\u1ec7n v\u00e0 t\u00ednh to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u<\/strong><\/p><ul><li><p>Th\u1ef1c hi\u1ec7n ki\u1ec3m tra t\u1ef7 l\u1ec7 l\u1ed7i bit (BER) b\u1eb1ng m\u00e1y ki\u1ec3m tra t\u1ef7 l\u1ec7 l\u1ed7i bit (BERT)<\/p><\/li><li><p>\u0110o \u0111\u1ed9 m\u00e9o xung (jitter), th\u1eddi gian t\u0103ng\/th\u1eddi gian gi\u1ea3m (rise\/fall times) v\u00e0 s\u1ef1 tu\u00e2n th\u1ee7 m\u1eb7t n\u1ea1 m\u1eaft (eye mask compliance)<\/p><\/li><li><p>X\u00e1c th\u1ef1c ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u t\u1ed1c \u0111\u1ed9 cao \u1edf t\u1ed1c \u0111\u1ed9 \u0111\u1ecbnh m\u1ee9c t\u1ed1i \u0111a<\/p><\/li><\/ul><\/li><li><p><strong>X\u00e1c th\u1ef1c DDM\/DOM v\u00e0 EEPROM<\/strong><\/p><ul><li><p>Ki\u1ec3m tra c\u00e1c gi\u00e1 tr\u1ecb nhi\u1ec7t \u0111\u1ed9, \u0111i\u1ec7n \u00e1p v\u00e0 c\u00f4ng su\u1ea5t quang<\/p><\/li><li><p>X\u00e1c th\u1ef1c n\u1ed9i dung EEPROM v\u00e0 giao ti\u1ebfp I\u00b2C<\/p><\/li><\/ul><\/li><li><p><strong>Ki\u1ec3m th\u1eed t\u00ednh t\u01b0\u01a1ng th\u00edch<\/strong><\/p><ul><li><p>Ki\u1ec3m tra module tr\u00ean c\u00e1c switch v\u00e0 router th\u1ef1c t\u1ebf c\u1ee7a nhi\u1ec1u nh\u00e0 s\u1ea3n xu\u1ea5t kh\u00e1c nhau<\/p><\/li><li><p>X\u00e1c minh ch\u1ee9c n\u0103ng c\u1eafm v\u00e0o v\u00e0 s\u1eed d\u1ee5ng ngay (plug-and-play) c\u0169ng nh\u01b0 h\u00e0nh vi firmware<\/p><\/li><li><p>Th\u1ef1c hi\u1ec7n ki\u1ec3m tra kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c gi\u1eefa nhi\u1ec1u nh\u00e0 cung c\u1ea5p<\/p><\/li><\/ul><\/li><li><p><strong>Ki\u1ec3m tra \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 tin c\u1eady trong \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng<\/strong><\/p><ul><li><p>Th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i ki\u1ec3m tra chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m, rung \u0111\u1ed9ng, \u0111\u1ed1t n\u00f3ng (burn-in) v\u00e0 \u1ee9ng su\u1ea5t nhi\u1ec7t<\/p><\/li><li><p>Gi\u00e1m s\u00e1t hi\u1ec7u su\u1ea5t quang h\u1ecdc v\u00e0 \u0111i\u1ec7n trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra \u1ee9ng su\u1ea5t<\/p><\/li><\/ul><\/li><li><p><strong>\u0110\u00e1nh gi\u00e1 cu\u1ed1i c\u00f9ng theo k\u1ebft qu\u1ea3 \u0110\u1ea1t\/Kh\u00f4ng \u0111\u1ea1t<\/strong><\/p><ul><li><p>So s\u00e1nh k\u1ebft qu\u1ea3 ki\u1ec3m tra v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a module<\/p><\/li><li><p>G\u1eafn c\u1edd cho c\u00e1c module kh\u00f4ng \u0111\u1ea1t b\u1ea5t k\u1ef3 ti\u00eau ch\u00ed quan tr\u1ecdng n\u00e0o \u0111\u1ec3 x\u1eed l\u00fd l\u1ea1i ho\u1eb7c lo\u1ea1i b\u1ecf<\/p><\/li><\/ul><\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" >Danh s\u00e1ch ki\u1ec3m tra \u0110\u1ea1t\/Kh\u00f4ng \u0111\u1ea1t<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 192px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"192\"><p>Danh m\u1ee5c ki\u1ec3m tra<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Ti\u00eau ch\u00ed ch\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>Ch\u1ec9 b\u00e1o \u0110\u1ea1t\/Kh\u00f4ng \u0111\u1ea1t<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"192\"><p>Quang h\u1ecdc<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00f4ng su\u1ea5t ph\u00e1t\/nh\u1eadn (Tx\/Rx), b\u01b0\u1edbc s\u00f3ng, t\u1ef7 s\u1ed1 t\u1eaft s\u00e1ng (extinction ratio)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trong ph\u1ea1m vi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u00b1 dung sai<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"192\"><p>\u0110i\u1ec7n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ef7 l\u1ec7 l\u1ed7i bit (BER), \u0111\u1ed9 m\u00e9o xung (jitter), th\u1eddi gian t\u0103ng\/gi\u1ea3m (rise\/fall time), m\u1eb7t n\u1ea1 m\u1eaft (eye mask)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>BER \u2264 10\u207b\u00b9\u00b2, bi\u1ec3u \u0111\u1ed3 m\u1eaft n\u1eb1m trong m\u1eb7t n\u1ea1<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"192\"><p>Ch\u1ea9n \u0111o\u00e1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Gi\u00e1 tr\u1ecb \u0111\u1ecdc DDM\/DOM, d\u1eef li\u1ec7u EEPROM<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1c gi\u00e1 tr\u1ecb kh\u1edbp v\u1edbi tham chi\u1ebfu; ID nh\u00e0 cung c\u1ea5p \u0111\u00fang<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"192\"><p>T\u01b0\u01a1ng th\u00edch<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Nh\u1eadn di\u1ec7n tr\u00ean switch, ch\u1ee9c n\u0103ng c\u1eafm v\u00e0o l\u00e0 d\u00f9ng ngay (plug-and-play)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Module \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n, kh\u00f4ng c\u00f3 l\u1ed7i<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"192\"><p>M\u00f4i tr\u01b0\u1eddng<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m, rung \u0111\u1ed9ng, \u0111\u1ed1t n\u00f3ng (burn-in)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kh\u00f4ng suy gi\u1ea3m ho\u1eb7c h\u1ecfng h\u00f3c<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"192\"><p>T\u1ed5ng th\u1ec3<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ki\u1ec3m tra d\u1ef1 ph\u00f2ng (margin testing)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ea5t c\u1ea3 c\u00e1c ch\u1ec9 s\u1ed1 hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t m\u1ee9c ti\u00eau chu\u1ea9n t\u1ed1i thi\u1ec3u<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" >G\u1ee3i \u00fd v\u1ec1 Ki\u1ec3m tra D\u1ef1 ph\u00f2ng (Margin-Testing)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ki\u1ec3m tra <strong>C\u00f4ng su\u1ea5t ph\u00e1t (Tx) \u1edf m\u1ee9c suy hao quang h\u1ecdc gi\u1ea3m<\/strong> \u0111\u1ec3 x\u00e1c minh kho\u1ea3ng d\u1ef1 ph\u00f2ng (headroom)<\/p><\/li><li><p>X\u00e1c minh <strong>\u0110\u1ed9 nh\u1ea1y nh\u1eadn (Rx) \u1edf m\u1ee9c t\u1ed5n hao li\u00ean k\u1ebft t\u1ed1i \u0111a<\/strong> \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady<\/p><\/li><li><p>Th\u1ef1c hi\u1ec7n <strong>Ki\u1ec3m tra t\u1ef7 l\u1ec7 l\u1ed7i bit (BER) v\u00e0 bi\u1ec3u \u0111\u1ed3 m\u1eaft \u1edf c\u00e1c gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9 c\u1ef1c \u0111oan<\/strong><\/p><\/li><li><p>T\u00e0i li\u1ec7u h\u00f3a <strong>c\u00e1c kho\u1ea3ng d\u1ef1 ph\u00f2ng ho\u1ea1t \u0111\u1ed9ng<\/strong> \u0111\u1ec3 ng\u0103n ng\u1eeba s\u1ef1 c\u1ed1 khi tri\u1ec3n khai th\u1ef1c t\u1ebf<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Ki\u1ec3m tra d\u1ef1 ph\u00f2ng \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c module kh\u00f4ng ch\u1ec9 \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u m\u00e0 c\u00f2n b\u1ec1n b\u1ec9 trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf.<\/p><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" >M\u1eb9o chuy\u00ean gia: C\u00e1ch ch\u1ecdn mua module \u0111\u00e1ng tin c\u1eady<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 duy tr\u00ec ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n cao, h\u00e3y mua module transceiver SFP t\u1eeb c\u00e1c nh\u00e0 cung c\u1ea5p uy t\u00edn. \u0110\u1ed1i v\u1edbi c\u00e1c module c\u1ea5p chuy\u00ean nghi\u1ec7p \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng v\u1ec1 t\u00ednh tu\u00e2n th\u1ee7 quang h\u1ecdc, \u0111i\u1ec7n v\u00e0 m\u00f4i tr\u01b0\u1eddng, vui l\u00f2ng truy c\u1eadp <a target=\"_self\" href=\"https:\/\/www.l-p.com\/\"><strong>C\u1eeda h\u00e0ng Ch\u00ednh th\u1ee9c LINK-PP<\/strong><\/a>. C\u00e1c module c\u1ee7a h\u1ecd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c tri\u1ec3n khai doanh nghi\u1ec7p v\u00e0 vi\u1ec5n th\u00f4ng, \u0111i k\u00e8m t\u00e0i li\u1ec7u hi\u1ec7u su\u1ea5t \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>M\u1ed9t quy tr\u00ecnh ki\u1ec3m tra SFP c\u00f3 c\u1ea5u tr\u00fac, k\u1ebft h\u1ee3p v\u1edbi c\u00e1c ki\u1ec3m tra \u0110\u1ea1t\/Kh\u00f4ng \u0111\u1ea1t h\u1ec7 th\u1ed1ng v\u00e0 ki\u1ec3m tra d\u1ef1 ph\u00f2ng (margin testing), \u0111\u1ea3m b\u1ea3o c\u00e1c module s\u1eb5n s\u00e0ng tri\u1ec3n khai, t\u01b0\u01a1ng th\u00edch v\u00e0 \u0111\u00e1ng tin c\u1eady.<strong>.<\/strong><\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c \u00e1p d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t n\u00e0y gi\u00fap gi\u1ea3m th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng, n\u00e2ng cao \u0111\u1ed9 tin c\u1eady m\u1ea1ng v\u00e0 b\u1ea3o v\u1ec7 kho\u1ea3n \u0111\u1ea7u t\u01b0 v\u00e0o c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng quang h\u1ecdc t\u1ed1c \u0111\u1ed9 cao.<\/p>","protected":false},"excerpt":{"rendered":"<p>H\u1ecdc c\u00e1ch ki\u1ec3m tra m\u1ed9t module SFP v\u1edbi c\u00f4ng c\u1ee5 v\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111\u00fang \u0111\u1eafn, \u0111i\u1ec3m th\u00e0nh c\u00f4ng\/fail cho c\u00f4ng su\u1ea5t quang, BER, m\u1eaft h\u00ecnh, DDM v\u00e0 t\u01b0\u01a1ng th\u00edch.<\/p>","protected":false},"author":1,"featured_media":2855,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[26],"class_list":["post-2856","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2856","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=2856"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2856\/revisions"}],"predecessor-version":[{"id":10727,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/2856\/revisions\/10727"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/2855"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=2856"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=2856"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=2856"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}