Multiplexers SDH: hauj lwm, los

Cov multiplexers yog zajlus kom ua ke nrog pab kiag li lawm uas yog tsim los rau cov tswj kis tau tus mob ntawm cov ntaub ntawv los ntawm ntau yam ntaub ntawv rau hauv ib zis channel. Nyob rau hauv qhov tseeb, xws li ib tug ntaus ntawv yog muaj ntau yam digital positional keyboards. Raws li, nws muaj peev xwm yuav xaus lus tias ib cov multiplexer yog tus tes hloov qhov tswv yim tseg rau ib tug tib zis kab. Qhov tsab xov xwm yuav muab suav hais tias ib tug nyias muaj nyias ib hom ntawm pab kiag li lawm - kho qhov muag multiplexers SDH.

Xws li no yog tsim los ua hauj lwm nrog cov ntaub ntawv txaus los ntawm kev txhais tau tias ntawm lub teeb kab teeb, uas txawv nyob rau hauv theem los yog amplitude grating thiab wavelength. SDH multiplexers kis cov lus qhia txog lub E1 raws thiab Ethernet kab thauj fiber-optic tes hauj lwm. Lawv ua hauj lwm rau ib los yog ob tug optical fibers (ib leeg-hom los yog multimode) nyob rau hauv 155, 520 Mbit / s ntawm ib tug wavelength ntawm 1550/1310 nm. SDH multiplexers yeej twb paub lawm mus txog 126 ntsiab lus ntawm kev sib cuag.

Qhov zoo ntawm cov xws li muaj xws li resilience, kev ruaj ntseg, kev tiv thaiv tiv thaiv hacking ntawm cov ntaub ntawv kis.

SDH-multiplexers yog yooj yim scalable rau muaj xws li cov ntsiab chav tsev li peb lub ntxiv Ethernet kis tau tus mob raws modules E1, intercom, thiab cov channel ntawm PM.

Cov pab kiag li lawm yog yus muaj los ntawm high "siab tawv" network. Yuav ua raws li E1 muaj tsawg jitter nqi cai los ntawm cov txuj no rau E1 thaum lub sij hawm synchronization drift, thiab tsis ua hauj lwm ntawm STM-1 system sij hawm. Interface tsis pub rau saib xyuas ua yuam kev nyob rau hauv kev sib txuas lus channel , thiab ua switching rau lub lwm channel. Kho qhov muag txoj kev thiab lub hwj chim tseg 1 + 1. Hais tias yog, thaum ua hauj lwm nyob rau hauv ib tug fiber optic channel nyob rau hauv cov kev tshwm sim ntawm kev puas tsuaj rau lub cable, kev twb kev txuas ntawm lub subscribers yog khaws cia.

SDH multiplexers yooj yim ua ke nrog rau lwm cov hom SDH khoom. Lawv tau khiav lag luam nyob rau hauv synchronous thiab asynchronous hom muaj cai nyob rau hauv multimode thiab ib hom fiber. SDH multiplexer txhawb tej thaj chaw deb configuration thiab cov kev tswj ntawm TCP / IP, 10/100 BaseT raws tu qauv.

Tej switching pab kiag li lawm yog feem ntau muab faib mus rau hauv ob hom: davhlau ya nyob twg thiab kuv / O. Qhov txawv ntawm cov hom yog tsis ib feem ntawm cov ports, thiab nyob rau hauv qhov kev tso kawm ntawm tus dais nyob rau hauv lub SDH network. Terminal multiplexer sau ua ib pawg raws ub nyob rau hauv lawv ib tug loj tus naj npawb ntawm cov zis raws thiab cov tswv yim. Qhov thib ob hom seev transit hau sau ua ib pawg kab nyob rau hauv kab occupying ib nrab txoj hauj lwm. Yog li cov lus qhia tributary raws derived ntawm lub sau ua ib pawg kwj los yog txhaj mus rau hauv nws.

Feem ntau cov manufacturers tsim universal multiplexers SDH yam, uas yog siv raws li cov tswv yim / tso zis davhlau ya nyob twg, raws li zoo raws li tus ntoo khaub lig-connectors - nyob ntawm seb lub ntsia modules nyob rau hauv lawv cov sau ua ib pawg thiab tributary ports.

Nyob rau hauv xaus, peb ntxiv uas fiber optic multiplexers, yog muaj ntau thiab ntau chaw vim lub intensive kev loj hlob ntawm no hom ntawm kev sib txuas lus. rau fiber optic technology rau yav tom ntej.