{"id":3978,"date":"2025-10-11T11:12:00","date_gmt":"2025-10-11T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/power-budget-importance-calculation-management-for-devices\/"},"modified":"2026-06-22T09:03:09","modified_gmt":"2026-06-22T09:03:09","slug":"power-budget-importance-calculation-management-for-devices","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/power-budget-importance-calculation-management-for-devices","title":{"rendered":"L\u00e0m Ch\u1ee7 Ng\u00e2n S\u00e1ch C\u00f4ng Su\u1ea5t M\u1ea1ng C\u1ee7a B\u1ea1n: H\u01b0\u1edbng D\u1eabn To\u00e0n Di\u1ec7n \u0110\u1ec3 Thi\u1ebft L\u1eadp C\u00e1c Li\u00ean K\u1ebft \u0110\u00e1ng Tin C\u1eady"},"content":{"rendered":"
\"Power<\/figure>\n\n\n\n

Trong th\u1ebf gi\u1edbi m\u1ea1ng quang s\u1ee3i, hi\u1ec7u su\u1ea5t l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh. Ch\u1ec9 m\u1ed9t m\u1eaft x\u00edch y\u1ebfu c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u ch\u1eadm, t\u00ecnh tr\u1ea1ng ng\u1eaft k\u1ebft n\u1ed1i th\u01b0\u1eddng xuy\u00ean v\u00e0 th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng t\u1ed1n k\u00e9m. \u1ede trung t\u00e2m c\u1ee7a m\u1ed9t li\u00ean k\u1ebft quang \u1ed5n \u0111\u1ecbnh v\u00e0 hi\u1ec7u n\u0103ng cao l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n nh\u01b0ng th\u01b0\u1eddng b\u1ecb b\u1ecf qua: Ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t<\/strong>.<\/p>\n\n\n\n

H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng \u0111\u00e2y nh\u01b0 ng\u00e2n s\u00e1ch t\u00e0i ch\u00ednh d\u00e0nh cho t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng trong m\u1ea1ng c\u1ee7a b\u1ea1n. B\u1ea1n c\u00f3 m\u1ed9t l\u01b0\u1ee3ng nh\u1ea5t \u0111\u1ecbnh \u201cti\u1ec1n t\u1ec7 \u00e1nh s\u00e1ng\u201d (c\u00f4ng su\u1ea5t quang) \u0111\u1ec3 chi ti\u00eau t\u1eeb b\u1ed9 ph\u00e1t \u0111\u1ebfn b\u1ed9 thu, t\u00ednh to\u00e1n t\u1ea5t c\u1ea3 c\u00e1c \u201cchi ph\u00ed\u201d (suy hao t\u00edn hi\u1ec7u) d\u1ecdc theo \u0111\u01b0\u1eddng truy\u1ec1n. N\u1ebfu b\u1ea1n v\u01b0\u1ee3t qu\u00e1 ng\u00e2n s\u00e1ch n\u00e0y, k\u1ebft n\u1ed1i s\u1ebd th\u1ea5t b\u1ea1i. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd l\u00e0 c\u1ea9m nang to\u00e0n di\u1ec7n gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5, t\u00ednh to\u00e1n v\u00e0 l\u00e0m ch\u1ee7 ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t quang<\/strong>, \u0111\u1ea3m b\u1ea3o c\u00e1c li\u00ean k\u1ebft c\u1ee7a b\u1ea1n lu\u00f4n v\u1eefng ch\u1eafc v\u00e0 s\u1eb5n s\u00e0ng cho t\u01b0\u01a1ng lai.<\/p>\n\n\n\n

Ch\u00fang t\u00f4i c\u0169ng s\u1ebd \u0111i s\u00e2u v\u00e0o vai tr\u00f2 then ch\u1ed1t c\u1ee7a b\u1ed9 thu ph\u00e1t quang<\/strong><\/a> v\u00e0 c\u00e1ch m\u1ed9t \u0111\u1ed1i t\u00e1c \u0111\u00e1ng tin c\u1eady nh\u01b0 LINK-PP<\/strong><\/a> c\u00f3 th\u1ec3 cung c\u1ea5p c\u00e1c th\u00e0nh ph\u1ea7n c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1ea1n \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u00e0nh c\u00f4ng.<\/p>\n\n\n\n

\ud83d\udcd1 Ng\u00e2n S\u00e1ch C\u00f4ng Su\u1ea5t Ch\u00ednh X\u00e1c L\u00e0 G\u00ec? Ph\u00e2n T\u00edch Nh\u1eefng \u0110i\u1ec1u C\u01a1 B\u1ea3n<\/strong><\/h2>\n\n\n\n

V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, m\u1ed9t Ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t<\/strong> l\u00e0 m\u1ee9c suy hao t\u00edn hi\u1ec7u (suy gi\u1ea3m) t\u1ed1i \u0111a \u0111\u01b0\u1ee3c ph\u00e9p gi\u1eefa ngu\u1ed3n s\u00e1ng (b\u1ed9 ph\u00e1t) v\u00e0 b\u1ed9 d\u00f2 (b\u1ed9 thu) \u0111\u1ec3 h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang c\u00e1ch. \u0110\u00e2y l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a thi\u1ebft k\u1ebf li\u00ean k\u1ebft quang s\u1ee3i<\/strong> v\u00e0 r\u1ea5t quan tr\u1ecdng nh\u1eb1m \u0111\u1ea3m b\u1ea3o T\u1ef7 l\u1ec7 L\u1ed7i Bit (BER)<\/strong><\/a> hi\u1ec7u su\u1ea5t duy tr\u00ec trong gi\u1edbi h\u1ea1n ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n

Ph\u01b0\u01a1ng tr\u00ecnh c\u01a1 b\u1ea3n r\u1ea5t \u0111\u01a1n gi\u1ea3n:<\/p>\n\n\n\n

Ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t (dB) = C\u00f4ng su\u1ea5t b\u1ed9 ph\u00e1t t\u1ed1i thi\u1ec3u (dBm) \u2013 \u0110\u1ed9 nh\u1ea1y b\u1ed9 thu t\u1ed1i thi\u1ec3u (dBm)<\/strong><\/p>\n\n\n\n

Gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n n\u00e0y bi\u1ec3u th\u1ecb t\u1ed5ng m\u1ee9c suy hao m\u00e0 li\u00ean k\u1ebft c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u1ef1ng. T\u1ed5n hao th\u1ef1c t\u1ebf tr\u00ean li\u00ean k\u1ebft c\u1ee7a b\u1ea1n ph\u1ea3i nh\u1ecf h\u01a1n<\/em> gi\u00e1 tr\u1ecb n\u00e0y \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n

\ud83d\udcd1 Vai Tr\u00f2 Quy\u1ebft \u0110\u1ecbnh C\u1ee7a B\u1ed9 Thu Ph\u00e1t Quang Trong Ng\u00e2n S\u00e1ch C\u00f4ng Su\u1ea5t C\u1ee7a B\u1ea1n<\/strong><\/h2>\n\n\n\n

Khi th\u1ea3o lu\u1eadn v\u1ec1 ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t trong m\u1ea1ng quang s\u1ee3i<\/strong>, LINK-PP LPJ4014CNL Industrial RJ45 Magjack b\u1ed9 thu ph\u00e1t quang<\/strong><\/a> l\u00e0 nh\u00e2n t\u1ed1 n\u1ed5i b\u1eadt nh\u1ea5t. \u0110\u00e2y l\u00e0 m\u00f4-\u0111un chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111i\u1ec7n th\u00e0nh \u00e1nh s\u00e1ng v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a n\u00f3 tr\u1ef1c ti\u1ebfp x\u00e1c \u0111\u1ecbnh hai bi\u1ebfn s\u1ed1 quan tr\u1ecdng nh\u1ea5t trong ph\u01b0\u01a1ng tr\u00ecnh ng\u00e2n s\u00e1ch c\u00f4ng su\u1ea5t c\u1ee7a ch\u00fang ta.<\/p>\n\n\n\n