Menene ma'anar transceiver na gani na 2M, kuma menene dangantakar dake tsakanin na'urar transceiver E1 da 2M?

Transceiver na gani na'ura ce da ke juyar da siginar E1 da yawa zuwa siginar gani.Hakanan ana kiran mai ɗaukar gani na gani kayan aikin watsawa.Masu jigilar gani suna da farashi daban-daban bisa ga adadin E1 (wato, 2M) tashar jiragen ruwa da ake watsawa.Gabaɗaya, ƙaramar mai ɗaukar gani na gani na iya watsa 4 E1s.Mafi girma na gani na gani na yanzu yana iya watsa 4032 E1s, kuma kowane E1 ya haɗa da wayoyi 30.Don haka, menene ma'anar transceiver na gani na 2m, kuma menene dangantakar dake tsakanin mai ɗaukar hoto E1 da 2M?

Nau'o'in transceivers na gani, masu ɗaukar hoto sun kasu kashi 3: PDH, SPDH, SDH.PDH na gani na gani na gani ƙananan ƙananan ƙarfi, waɗanda gabaɗaya ana amfani da su cikin nau'i-nau'i, waɗanda ake kira aikace-aikacen batu-zuwa, kuma ƙarfin su gabaɗaya 4E1, 8E1, da 16E1.Mai ɗaukar gani na SDH yana da babban ƙarfi, gabaɗaya 16E1 zuwa 4032 E1, mai ɗaukar hoto na SPDH, tsakanin PDH da SDH.Gabaɗaya magana, transceiver na gani ya fi na PDH transceiver na gani, wanda shine na'urar juyawa ta hoto.Gabaɗaya, transceiver na gani tare da tashar gani guda ɗaya da tashoshin wutar lantarki 2M guda huɗu shine ya fi kowa.Ma'aikatan sadarwa sukan yi amfani da shi don watsa siginar murya.A babban ofishi, tashar tashar gani tana canza siginar lantarki ta 2M zuwa siginar gani kuma tana watsa shi akan kebul na gani.Bayan kai ƙarshen mai amfani, siginar gani yana jujjuya siginar lantarki zuwa siginar lantarki na 2M, wato, ana aika sabis na 2M zuwa kayan aikin murya kamar PCM.Kuma an fi amfani da fiber optic transceivers wajen sadarwar bayanai.Har ila yau, wani nau'i ne na kayan aikin juyawa na hoto.Gabaɗaya, akwai tashar tashar gani sama da ɗaya da tashoshin Ethernet da yawa.Yana jujjuya siginar gani zuwa siginar Ethernet, waɗanda ake amfani da su don aika sabis ɗin bayanai zuwa kayan aikin sadarwa na bayanai kamar na'urori ko masu sauyawa.

Ga masu ɗaukar hoto, 2M a zahiri yana nufin cewa ƙarshen 1550 na ƙarshe yana da bandwidth na 2M, wanda ake amfani dashi don watsa bayanan sarrafawa 485, kuma akwai 1.25G, 155M da makamantansu, wato bandwidth ɗin da ake buƙata don watsa bidiyo, asali 1 tashar bidiyo. bukatar 155M.Masu ɗaukar gani na gani E1 da 2M a zahiri sun bambanta kawai a cikin magana.E1 shine bayanin ƙungiyar a ma'aunin PDH na Turai (daidai da daidaitattun ƙungiyar Arewacin Amurka shine T1, watau 1.5M).Don ƙimar E1 na Turai shine 2M, don haka ana amfani da 2M sau da yawa don wakiltar E1.Hakanan ana iya cewa E1 shine sunan kimiyya kuma 2M shine sunan gama gari.A zamanin SDH, adadin VC12 (da TU-12) a cikin dangantakar da ke tsakanin SDH ya kusa kusa da 2M (a gaskiya ba 2048K ba), wasu mutane kuma suna kiran waɗannan 2M, wanda ba daidai ba ne.Don tashar tashar E1 akan na'urar, ana kiranta gabaɗaya tashar tashar 2M, kuma yakamata ta zama faɗakarwar E1 don zama daidai.Hakanan, tashar 34M yakamata ta zama tashar E3, kuma tashar 45M yakamata ta zama tashar DS3.140M tashar jiragen ruwa ne E4 tashar jiragen ruwa.

https://www.jha-tech.com/pdh-sdh-multiplexer/

 


Lokacin aikawa: Satumba-27-2022