{"id":10050,"date":"2021-10-21T06:57:15","date_gmt":"2021-10-21T06:57:15","guid":{"rendered":"https:\/\/ulcab.com.vn\/?p=10050"},"modified":"2021-10-21T06:57:15","modified_gmt":"2021-10-21T06:57:15","slug":"chia-se-ve-san-pham-su-khac-biet-giua-cap-quang-simplex-va-duplex","status":"publish","type":"post","link":"https:\/\/ulcab.com.vn\/?p=10050","title":{"rendered":"Chia S\u1ebb V\u1ec1 S\u1ea3n Ph\u1ea9m, S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa C\u00e1p quang Simplex v\u00e0 Duplex"},"content":{"rendered":"

Khi n\u00f3i v\u1ec1 c\u00e1p v\u00e1 s\u1ee3i quang, c\u00e1c s\u1ea3n ph\u1ea9m li\u00ean quan m\u00e0 tr\u01b0\u1edbc ti\u00ean ch\u00fang t\u00f4i ngh\u0129 \u0111\u1ebfn th\u01b0\u1eddng l\u00e0 c\u00e1p v\u00e1 \u0111a ch\u1ebf \u0111\u1ed9 v\u00e0 c\u00e1p \u0111\u01a1n ch\u1ebf \u0111\u1ed9. T\u1ea5t nhi\u00ean, v\u1eabn c\u00f2n nhi\u1ec1u lo\u1ea1i kh\u00e1c.\u00a0Nh\u01b0ng l\u00e0 ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u trong l\u0129nh v\u1ef1c n\u00e0y c\u00f3 th\u1ec3 t\u1ef1 h\u1ecfi c\u00e1p v\u00e1 s\u1ee3i \u0111\u00f4i v\u00e0 s\u1ee3i \u0111\u01a1n l\u00e0 g\u00ec.\u00a0V\u0103n b\u1ea3n n\u00e0y s\u1ebd gi\u1edbi thi\u1ec7u cho b\u1ea1n v\u1ec1 c\u00e1c lo\u1ea1i c\u00e1p.\u00a0Tr\u01b0\u1edbc khi ch\u00fang ta \u0111\u1ebfn v\u1edbi c\u00e1p v\u00e1 s\u1ee3i \u0111\u01a1n v\u00e0 song c\u00f4ng, tr\u01b0\u1edbc ti\u00ean ch\u00fang ta h\u00e3y l\u00e0m quen v\u1edbi hai t\u1eeb – \u0111\u01a1n gi\u1ea3n v\u00e0 song c\u00f4ng.<\/p>\n

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Simplex V\u00e0 Duplex C\u00f3 Ngh\u0129a L\u00e0 G\u00ec?<\/h3>\n

Theo \u0111\u1ecbnh ngh\u0129a c\u1ee7a ITU-T, m\u1ea1ch \u0111\u01a1n gi\u1ea3n l\u00e0 m\u1ed9t trong \u0111\u00f3 c\u00e1c t\u00edn hi\u1ec7u c\u00f3 th\u1ec3 truy\u1ec1n theo m\u1ed9t h\u01b0\u1edbng duy nh\u1ea5t t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m.\u00a0M\u1ed9t \u0111\u1ea7u l\u00e0 m\u00e1y ph\u00e1t, c\u00f2n \u0111\u1ea7u kia l\u00e0 m\u00e1y thu v\u00e0 \u0111i\u1ec1u \u0111\u00f3 kh\u00f4ng th\u1ec3 \u0111\u1ea3o ng\u01b0\u1ee3c.<\/p>\n

Tuy nhi\u00ean, v\u00e0o th\u1eddi \u0111i\u1ec3m kh\u00e1c, th\u00f4ng tin li\u00ean l\u1ea1c c\u00f3 th\u1ec3 ch\u1ea3y theo h\u01b0\u1edbng ng\u01b0\u1ee3c l\u1ea1i.\u00a0\u0110\u00f3 l\u00e0 m\u1ed9t n\u1eeda song c\u00f4ng.\u00a0H\u1ec7 th\u1ed1ng b\u00e1n song c\u00f4ng c\u00f3 ngh\u0129a l\u00e0 m\u1ed9t k\u00eanh truy\u1ec1n th\u00f4ng ho\u1ea1t \u0111\u1ed9ng theo m\u1ed9t h\u01b0\u1edbng t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m v\u00e0 c\u00f3 th\u1ec3 \u0111\u1ea3o ng\u01b0\u1ee3c.\u00a0M\u1ed9t s\u1ef1 t\u01b0\u01a1ng t\u1ef1 t\u1ed1t cho h\u1ec7 th\u1ed1ng b\u00e1n song c\u00f4ng s\u1ebd l\u00e0 hai con \u0111\u01b0\u1eddng c\u00f3 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n giao th\u00f4ng \u1edf m\u1ed7i \u0111\u1ea7u, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o lu\u1ed3ng giao th\u00f4ng tr\u00f4i ch\u1ea3y, b\u1ed9 \u0111i\u1ec1u khi\u1ec3n giao th\u00f4ng ch\u1ec9 cho ph\u00e9p m\u1ed9t h\u01b0\u1edbng t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m.\u00a0Nh\u01b0ng n\u1ebfu m\u1ed9t b\u00ean truy\u1ec1n c\u00f9ng l\u00fac, m\u1ed9t v\u1ee5 va ch\u1ea1m x\u1ea3y ra, d\u1eabn \u0111\u1ebfn tin nh\u1eafn b\u1ecb m\u1ea5t.<\/p>\n

B\u1ed9 \u0111\u00f4i song c\u00f4ng xu\u1ea5t ph\u00e1t t\u1eeb b\u1ed9 \u0111\u00f4i c\u1ee7a b\u1ed9 \u0111\u00f4i, c\u00f3 ngh\u0129a l\u00e0 m\u1ed9t b\u1ed9 hai, v\u00e0 c\u00f3 ngh\u0129a l\u00e0 m\u1ed9t b\u1ed9 ph\u1eadn kh\u00e1c nhau.\u00a0M\u1ed9t h\u1ec7 th\u1ed1ng song c\u00f4ng c\u00f3 hai \u0111\u01b0\u1eddng d\u1eabn \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng v\u1edbi m\u1ed7i \u0111\u01b0\u1eddng d\u1eabn ch\u1ec9 cung c\u1ea5p th\u00f4ng tin theo m\u1ed9t h\u01b0\u1edbng, \u0111\u00f3 l\u00e0 A \u0111\u1ebfn B qua m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn, B \u0111\u1ebfn A tr\u00ean \u0111\u01b0\u1eddng kia.\u00a0So v\u1edbi b\u00e1n song c\u00f4ng, m\u1ed9t h\u1ec7 th\u1ed1ng song c\u00f4ng ho\u00e0n to\u00e0n, ho\u1eb7c \u0111\u00f4i khi \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 song c\u00f4ng cho ph\u00e9p giao ti\u1ebfp theo c\u1ea3 hai h\u01b0\u1edbng v\u00e0 cho ph\u00e9p \u0111i\u1ec1u n\u00e0y x\u1ea3y ra \u0111\u1ed3ng th\u1eddi.\u00a0Gi\u1ed1ng nh\u01b0 \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng, c\u1ea3 hai b\u00ean c\u00f3 th\u1ec3 n\u00f3i v\u00e0 nghe c\u00f9ng m\u1ed9t l\u00fac.<\/p>\n

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C\u00e1p Quang Simplex:<\/h3>\n

C\u00e1p quang Simplex s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi t\u00edn hi\u1ec7u ch\u1ec9 c\u1ea7n \u0111i theo m\u1ed9t h\u01b0\u1edbng.\u00a0Ch\u00fang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ea5m d\u1ee9t s\u1ea3n xu\u1ea5t trong \u0111\u00f3 t\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 t\u00ednh \u0111\u1ed3ng nh\u1ea5t l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 v\u1eadn h\u00e0nh nhanh ch\u00f3ng v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n

C\u00e1p quang Simplex bao g\u1ed3m m\u1ed9t s\u1ee3i \u0111\u01a1n, \u0111\u01b0\u1ee3c \u0111\u1ec7m ch\u1eb7t (\u0111\u01b0\u1ee3c ph\u1ee7 m\u1ed9t l\u1edbp \u0111\u1ec7m 900 micron tr\u00ean l\u1edbp \u0111\u1ec7m ch\u00ednh) v\u1edbi c\u00e1c th\u00e0nh vi\u00ean c\u01b0\u1eddng \u0111\u1ed9 Kevlar (s\u1ee3i aramid) v\u00e0 \u0111\u01b0\u1ee3c b\u1ecdc ngo\u00e0i \u0111\u1ec3 s\u1eed d\u1ee5ng trong nh\u00e0, v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu cho c\u00e1c \u1ee9ng d\u1ee5ng d\u00e2y n\u1ed1i v\u00e0 b\u1ea3ng n\u1ed1i \u0111a n\u0103ng .\u00a0\u0110\u1ecdc d\u1eef li\u1ec7u t\u01b0\u01a1ng t\u1ef1 sang k\u1ef9 thu\u1eadt s\u1ed1, r\u01a1le c\u1ea3m bi\u1ebfn \u0111\u01b0\u1eddng cao t\u1ed1c gi\u1eefa c\u00e1c ti\u1ec3u bang v\u00e0 c\u1ea3m bi\u1ebfn ranh gi\u1edbi v\u00e0 t\u1ed1c \u0111\u1ed9 t\u1ef1 \u0111\u1ed9ng (cho c\u00e1c \u1ee9ng d\u1ee5ng th\u1ec3 thao) \u0111\u1ec1u l\u00e0 nh\u1eefng \u1ee9ng d\u1ee5ng tuy\u1ec7t v\u1eddi c\u1ee7a c\u00e1p quang Simplex.\u00a0H\u00ecnh th\u1ee9c c\u00e1p quang n\u00e0y c\u00f3 th\u1ec3 r\u1ebb h\u01a1n c\u00e1p duplex, v\u00ec \u00edt li\u00ean quan \u0111\u1ebfn v\u1eadt li\u1ec7u h\u01a1n.\u00a0C\u00e1p s\u1ee3i quang Simplex l\u00e0 m\u1ed9t s\u1ee3i \u0111\u01a1n c\u00f3 s\u1eb5n \u1edf ch\u1ebf \u0111\u1ed9 \u0111\u01a1n, \u0111a ch\u1ebf \u0111\u1ed9 ho\u1eb7c duy tr\u00ec ph\u00e2n c\u1ef1c, v\u00e0 ch\u00fang c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng c\u01b0\u1eddng \u0111\u1ed9 v\u00e0 t\u00ednh linh ho\u1ea1t c\u1ea7n thi\u1ebft cho c\u00e1c \u1ee9ng d\u1ee5ng k\u1ebft n\u1ed1i s\u1ee3i hi\u1ec7n nay.\u00a0Ch\u00fang t\u00f4i c\u0169ng cung c\u1ea5p Riser, Plenum x\u1ebfp h\u1ea1ng c\u00f4ng tr\u00ecnh v\u00e0 \u00e1o kho\u00e1c LSZH.<\/p>\n

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C\u00e1p Quang K\u00e9p:<\/h3>\n

C\u00e1p quang \u0111\u00f4i bao g\u1ed3m hai s\u1ee3i \u0111\u01b0\u1ee3c n\u1ed1i v\u1edbi nhau b\u1eb1ng m\u1ed9t k\u1ebft n\u1ed1i m\u1ecfng gi\u1eefa hai \u00e1o kho\u00e1c.\u00a0D\u00f9 l\u00e0 ch\u1ebf \u0111\u1ed9 \u0111\u01a1n hay \u0111a ch\u1ebf \u0111\u1ed9, ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng m\u00e0 d\u1eef li\u1ec7u c\u1ea7n \u0111\u01b0\u1ee3c truy\u1ec1n theo hai chi\u1ec1u.\u00a0M\u1ed9t s\u1ee3i truy\u1ec1n d\u1eef li\u1ec7u m\u1ed9t h\u01b0\u1edbng;\u00a0c\u00e1c s\u1ee3i kh\u00e1c truy\u1ec1n d\u1eef li\u1ec7u theo h\u01b0\u1edbng ng\u01b0\u1ee3c l\u1ea1i.\u00a0M\u00e1y tr\u1ea1m l\u1edbn h\u01a1n, thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch, m\u00e1y ch\u1ee7 v\u00e0 ph\u1ea7n c\u1ee9ng m\u1ea1ng ch\u00ednh c\u00f3 xu h\u01b0\u1edbng y\u00eau c\u1ea7u c\u00e1p quang song c\u00f4ng.<\/p>\n

C\u00e1c Lo\u1ea1i S\u1ee3i K\u00e9p:<\/h3>\n

B\u00e1n song c\u00f4ng: D\u1eef li\u1ec7u ch\u1ec9 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c truy\u1ec1n theo m\u1ed9t h\u01b0\u1edbng t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m.<\/p>\n

Full-duplex: D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n theo hai h\u01b0\u1edbng c\u00f9ng m\u1ed9t l\u00fac.<\/p>\n

Th\u00f4ng tin song c\u00f4ng kh\u00e1c: H\u1ec7 th\u1ed1ng giao ti\u1ebfp song c\u00f4ng l\u00e0 h\u1ec7 th\u1ed1ng \u0111i\u1ec3m-\u0111i\u1ec3m bao g\u1ed3m hai b\u00ean ho\u1eb7c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i c\u00f3 th\u1ec3 giao ti\u1ebfp v\u1edbi nhau theo c\u1ea3 hai h\u01b0\u1edbng.\u00a0Gi\u1edd \u0111\u00e2y, c\u00e1c h\u1ec7 th\u1ed1ng song c\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u m\u1ea1ng truy\u1ec1n th\u00f4ng, \u0111\u1ec3 cho ph\u00e9p giao ti\u1ebfp \u0111\u01b0\u1eddng ph\u1ed1 hai chi\u1ec1u, gi\u1eefa hai b\u00ean \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i ho\u1eb7c \u0111\u1ec3 cung c\u1ea5p m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn ng\u01b0\u1ee3c l\u1ea1i, cho vi\u1ec7c theo d\u00f5i v\u00e0 \u0111i\u1ec1u ch\u1ec9nh thi\u1ebft b\u1ecb t\u1eeb xa trong l\u0129nh v\u1ef1c n\u00e0y.<\/p>\n

M\u1ed9t S\u1ed1 M\u1eb9o \u0110\u1ec3 L\u1ef1a Ch\u1ecdn C\u00e1p Quang Simplex V\u00e0 Duplex<\/h3>\n

Khi mua c\u00e1p quang, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i hi\u1ec3u c\u00e1c lo\u1ea1i \u0111\u1eb7c \u0111i\u1ec3m c\u1ed1t l\u00f5i kh\u00e1c nhau c\u00f3 s\u1eb5n trong ch\u00ednh c\u00e1p.\u00a0M\u1ed7i \u0111\u1eb7c \u0111i\u1ec3m kh\u00e1c nhau n\u00e0y s\u1ebd c\u00f3 nh\u1eefng \u1ea3nh h\u01b0\u1edfng kh\u00e1c nhau \u0111\u1ebfn kh\u1ea3 n\u0103ng truy\u1ec1n th\u00f4ng tin c\u1ee7a b\u1ea1n m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady v\u00e0 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m kh\u00e1c nhau n\u00e0y c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn d\u1ef1 \u00e1n c\u00e1p.\u00a0B\u1ea1n ph\u1ea3i t\u00ecm ki\u1ebfm chi ph\u00ed c\u1ee7a c\u00e1p quang n\u1ebfu b\u1ea1n mua c\u00e1p.\u00a0B\u00e2y gi\u1edd, ch\u00fang ta h\u00e3y xem c\u00e1c lo\u1ea1i c\u00e1p quang ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/p>\n

C\u00e1p Quang Simplex<\/h3>\n

M\u1ed9t s\u1ee3i c\u00e1p quang \u0111\u01a1n gi\u1ea3n bao g\u1ed3m m\u1ed9t s\u1ee3i th\u1ee7y tinh b\u1eb1ng s\u1ee3i nh\u1ef1a v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c \u1ee9ng d\u1ee5ng ch\u1ec9 y\u00eau c\u1ea7u truy\u1ec1n d\u1eef li\u1ec7u m\u1ed9t chi\u1ec1u.\u00a0S\u1ee3i Simplex th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u1ea5t khi ch\u1ec9 c\u1ea7n m\u1ed9t \u0111\u01b0\u1eddng truy\u1ec1n v\u00e0 nh\u1eadn duy nh\u1ea5t gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb ho\u1eb7c khi s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u d\u1eef li\u1ec7u gh\u00e9p k\u00eanh (giao ti\u1ebfp hai chi\u1ec1u qua m\u1ed9t s\u1ee3i \u0111\u01a1n).\u00a0S\u1ee3i Simplex c\u00f3 s\u1eb5n trong singlemode v\u00e0 multimode.\u00a0V\u00ed d\u1ee5, thang \u0111o v\u1eadn chuy\u1ec3n gi\u1eefa c\u00e1c ti\u1ec3u bang g\u1eedi tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a xe t\u1ea3i \u0111\u1ebfn tr\u1ea1m gi\u00e1m s\u00e1t ho\u1eb7c gi\u00e1m s\u00e1t \u0111\u01b0\u1eddng d\u1ea7u g\u1eedi d\u1eef li\u1ec7u v\u1ec1 l\u01b0u l\u01b0\u1ee3ng d\u1ea7u \u0111\u1ebfn m\u1ed9t v\u1ecb tr\u00ed trung t\u00e2m.<\/p>\n

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C\u00e1p Quang K\u00e9p<\/h3>\n

M\u1ed9t s\u1ee3i c\u00e1p song c\u00f4ng bao g\u1ed3m hai s\u1ee3i s\u1ee3i th\u1ee7y tinh ho\u1eb7c nh\u1ef1a.\u00a0Th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong m\u1ed9t \u0111\u1ecbnh d\u1ea1ng x\u00e2y d\u1ef1ng c\u1ee7a Zip zipcord (b\u00ean c\u1ea1nh nhau), c\u00e1p n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 li\u00ean l\u1ea1c song c\u00f4ng gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb c\u00f3 y\u00eau c\u1ea7u truy\u1ec1n v\u00e0 nh\u1eadn ri\u00eang bi\u1ec7t.\u00a0S\u1ee3i k\u00e9p c\u00f3 s\u1eb5n trong singlemode v\u00e0 multimode.\u00a0S\u1eed d\u1ee5ng c\u00e1p quang song c\u00f4ng \u0111a ch\u1ebf \u0111\u1ed9 ho\u1eb7c c\u00e1p song c\u00f4ng ch\u1ebf \u0111\u1ed9 \u0111\u01a1n cho c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u truy\u1ec1n d\u1eef li\u1ec7u hai chi\u1ec1u \u0111\u1ed3ng th\u1eddi.\u00a0M\u00e1y tr\u1ea1m, thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch s\u1ee3i v\u00e0 m\u00e1y ch\u1ee7, modem s\u1ee3i v\u00e0 ph\u1ea7n c\u1ee9ng t\u01b0\u01a1ng t\u1ef1 y\u00eau c\u1ea7u c\u00e1p quang song c\u00f4ng.<\/p>\n

Ti\u00eau ch\u00ed thi\u1ebft k\u1ebf c\u00e1p cho \u0111\u1ed9 b\u1ec1n k\u00e9o, b\u1ea3o v\u1ec7 n\u01b0\u1edbc, x\u1ebfp h\u1ea1ng m\u00e3 s\u1ee3i<\/p>\n

\u0110\u1ed9 b\u1ec1n k\u00e9o: M\u1ed9t s\u1ed1 c\u00e1p ch\u1ec9 \u0111\u01a1n gi\u1ea3n \u0111\u01b0\u1ee3c \u0111\u1eb7t v\u00e0o c\u00e1c khay ho\u1eb7c m\u01b0\u01a1ng c\u00e1p.\u00a0V\u00ec v\u1eady, s\u1ee9c m\u1ea1nh k\u00e9o kh\u00f4ng qu\u00e1 quan tr\u1ecdng.\u00a0Nh\u01b0ng c\u00e1p kh\u00e1c c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u00e9o qua 2 km ho\u1eb7c h\u01a1n \u1ed1ng d\u1eabn.\u00a0Ngay c\u1ea3 v\u1edbi nhi\u1ec1u ch\u1ea5t b\u00f4i tr\u01a1n c\u00e1p, l\u1ef1c k\u00e9o c\u00f3 th\u1ec3 cao.\u00a0H\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i c\u00e1p c\u00f3 \u0111\u01b0\u1ee3c s\u1ee9c m\u1ea1nh t\u1eeb s\u1ee3i agamid, m\u1ed9t lo\u1ea1i s\u1ee3i polymer \u0111\u1ed9c \u0111\u00e1o r\u1ea5t m\u1ea1nh nh\u01b0ng kh\u00f4ng k\u00e9o d\u00e0i – do \u0111\u00f3, vi\u1ec7c k\u00e9o v\u00e0o n\u00f3 s\u1ebd kh\u00f4ng g\u00e2y c\u0103ng th\u1eb3ng cho c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c trong c\u00e1p.\u00a0C\u00e1p \u0111\u01a1n gi\u1ea3n \u0111\u01a1n gi\u1ea3n nh\u1ea5t c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o 100-200 pounds, trong khi c\u00e1p b\u00ean ngo\u00e0i nh\u00e0 m\u00e1y c\u00f3 th\u1ec3 c\u00f3 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt h\u01a1n 800 pounds.<\/p>\n

B\u1ea3o v\u1ec7 n\u01b0\u1edbc: Ngo\u00e0i tr\u1eddi, m\u1ecdi d\u00e2y c\u00e1p ph\u1ea3i \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 kh\u1ecfi n\u01b0\u1edbc ho\u1eb7c \u0111\u1ed9 \u1ea9m.\u00a0N\u00f3 b\u1eaft \u0111\u1ea7u v\u1edbi m\u1ed9t chi\u1ebfc \u00e1o kho\u00e1c ch\u1ed1ng \u1ea9m, th\u01b0\u1eddng l\u00e0 PE (polyethylen) v\u00e0 l\u00e0m \u0111\u1ea7y v\u1eadt li\u1ec7u ch\u1eb7n n\u01b0\u1edbc.\u00a0C\u00e1ch th\u00f4ng th\u01b0\u1eddng l\u00e0 l\u00e0m ng\u1eadp c\u00e1p b\u1eb1ng gel ch\u1eb7n n\u01b0\u1edbc.\u00a0\u0110\u00f3 l\u00e0 hi\u1ec7u qu\u1ea3 nh\u01b0ng l\u1ed9n x\u1ed9n – \u0111\u00f2i h\u1ecfi m\u1ed9t lo\u1ea1i b\u1ecf gel.\u00a0M\u1ed9t gi\u1ea3i ph\u00e1p thay th\u1ebf m\u1edbi h\u01a1n l\u00e0 ch\u1eb7n n\u01b0\u1edbc kh\u00f4 b\u1eb1ng b\u1ed9t th\u1ea7n k\u1ef3 – th\u1ee9 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m trong t\u00e3 d\u00f9ng m\u1ed9t l\u1ea7n.\u00a0Ki\u1ec3m tra v\u1edbi nh\u00e0 cung c\u1ea5p c\u00e1p c\u1ee7a b\u1ea1n \u0111\u1ec3 xem n\u1ebfu h\u1ecd cung c\u1ea5p n\u00f3.<\/p>\n

X\u1ebfp h\u1ea1ng m\u00e3 l\u1eeda: M\u1ed7i c\u00e1p \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t trong nh\u00e0 ph\u1ea3i \u0111\u00e1p \u1ee9ng m\u00e3 l\u1eeda.\u00a0\u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 \u00e1o kho\u00e1c ph\u1ea3i \u0111\u01b0\u1ee3c x\u1ebfp h\u1ea1ng v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u00e1y, v\u1edbi x\u1ebfp h\u1ea1ng cho s\u1eed d\u1ee5ng chung, riser (c\u00e1p th\u1eb3ng \u0111\u1ee9ng cung c\u1ea5p l\u1eeda h\u01a1n ngang) v\u00e0 plenum (\u0111\u1ec3 l\u1eafp \u0111\u1eb7t trong khu v\u1ef1c x\u1eed l\u00fd kh\u00f4ng kh\u00ed. H\u1ea7u h\u1ebft c\u00e1c c\u00e1p trong nh\u00e0 s\u1eed d\u1ee5ng v\u1ecf b\u1ecdc PVC (polyvinyl clorua) cho \u1ede Hoa K\u1ef3, t\u1ea5t c\u1ea3 c\u00e1c d\u00e2y c\u00e1p trong c\u01a1 s\u1edf ph\u1ea3i mang c\u00e1c ch\u1ec9 s\u1ed1 nh\u1eadn d\u1ea1ng v\u00e0 d\u1ec5 ch\u00e1y theo NEC (M\u00e3 \u0111i\u1ec7n qu\u1ed1c gia) \u0111o\u1ea1n 770.<\/p>\n

Ph\u1ea7n K\u1ebft Lu\u1eadn<\/h3>\n

Sau khi \u0111\u1ecdc c\u00e1c tuy\u00ean b\u1ed1 tr\u00ean, b\u1ea1n c\u00f3 hi\u1ec3u bi\u1ebft ng\u1eafn g\u1ecdn v\u1ec1 c\u00e1p v\u00e1 s\u1ee3i \u0111\u01a1n v\u00e0 c\u00e1p v\u00e1 s\u1ee3i \u0111\u00f4i kh\u00f4ng? Khi ch\u1ecdn c\u00e1i kh\u00e1c, y\u1ebfu t\u1ed1 ch\u00ednh l\u00e0 thi\u1ebft b\u1ecb y\u00eau c\u1ea7u truy\u1ec1n d\u1eef li\u1ec7u m\u1ed9t chi\u1ec1u ho\u1eb7c hai chi\u1ec1u. Fiber-Mart c\u00f3 s\u1ed1 l\u01b0\u1ee3ng l\u1edbn c\u00e1p v\u00e1 s\u1ee3i quang \u0111\u01a1n v\u00e0 song c\u00f4ng, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1p v\u00e1 s\u1ee3i \u0111\u01a1n mode \u0111\u01a1n, c\u00e1p v\u00e1 hai ch\u1ebf \u0111\u1ed9 LC \u0111\u1ebfn LC, c\u00e1p song c\u00f4ng 10 gigabit, c\u00e1p v\u00e1 song c\u00f4ng LC ST, v.v. T\u00f4i tin r\u1eb1ng b\u1ea1n c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y m\u1ed9t c\u00e1p v\u00e1 s\u1ee3i quang ph\u00f9 h\u1ee3p cho c\u00e1c thi\u1ebft b\u1ecb c\u1ee7a m\u00ecnh trong c\u00e1c thi\u1ebft b\u1ecb v\u1eadt t\u01b0 c\u1ee7a \u0110\u1ee8C PH\u00c1T. Xin vui l\u00f2ng li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i:<\/p>\n