1, modem na gani siginar gani ce da ke shiga cikin kayan aikin siginar lantarki na Ethernet, modem na gani da farko ana kiransa modem, wani nau'in kayan aikin kwamfuta ne, yana cikin ƙarshen aikawa ta hanyar daidaita siginar dijital zuwa siginar analog, kuma a ƙarshen karɓa ta hanyar demodulation siginar analog zuwa siginar dijital na'ura ce.
Sashen Sadarwar Optical (ONU) na'urar sadarwa ce ta gani. An raba ONU zuwa na'urorin sadarwa masu aiki da kuma na'urorin sadarwa masu aiki. Ana amfani da ONU galibi don karɓar bayanan watsa shirye-shirye da OLTs ke aikawa. Baya ga aikin kyanwa mai haske, ONU kuma yana da aikin sauyawa.
2, onu ya kasu kashi a, b, c, dukkan ukun suna da damar gani, amma don samar wa masu amfani da adadin tashoshin, nau'ikan tashoshin sun bambanta, modem ɗin gani a zahiri aji onu ne.
Modem ɗin Optical, wanda aka fi sani da cat na gani, na'urar sadarwa ce da ke aika siginar gani zuwa wasu siginar yarjejeniya ta hanyar kafofin watsa labarai na fiber na gani. Na'urar watsawa ce ta relay don babban hanyar sadarwa ta yankin gida (LAN), hanyar sadarwa ta yankin birni (MAN), da kuma hanyar sadarwa mai faɗi (WAN). Na'urar ta ƙunshi aikawa, karɓa, sarrafawa, haɗawa, da samar da wutar lantarki. Tana ɗaukar babban guntu mai haɗaka, da'ira mai sauƙi, ƙarancin amfani da wutar lantarki, babban aminci, cikakken alamar yanayin ƙararrawa, da cikakken aikin sarrafa hanyar sadarwa.
Sadarwar fiber ta yi saurin girma zuwa babban nau'in watsa bayanai saboda fa'idodinta kamar faɗin mitar da babban ƙarfin aiki. Don cimma sadarwa ta gani, dole ne a aiwatar da daidaitawar gani da kuma daidaitawar gani. Saboda haka, a matsayin babbar na'urar sadarwa ta fiber optic, modem ɗin gani yana samun ƙarin kulawa. Akwai nau'ikan modulators guda biyu: modulator kai tsaye da modulator na waje, kuma dismodulator na gani ya kasu kashi biyu: tare da da ba tare da amplifier na gaba da aka gina a ciki ba. modulator kai tsaye da dismodulator tare da amplifier na gaba da aka gina a ciki sune babban abin da wannan aikin ya mayar da hankali a kai. Daidaitawa kai tsaye yana da fa'idodin sauƙi, tattalin arziki da sauƙin aiwatarwa, yayin da dismodulator tare da amplifier na gaba da aka gina a ciki yana da halayen haɗin kai mai girma da ƙaramin girma.
Na'urar zamani ta gani (optical modem) na'urar watsawa ce da za a iya haɗawa da Intanet tare da haɗin kebul na cibiyar sadarwa, kamar na'urar hasken Intanet ɗinmu, amma ƙarshen sama na kyanwa an haɗa shi da da'irar, kuma ƙarshen sama na modem ɗin gani an haɗa shi da hanyar haske, don haka ana kiransa da kyanwa mai haske. Kyanwa da aka haɗa da hanyar haske. Ƙarshen onu a cikin epon/GPON an haɗa shi da mai amfani.
1, modem ɗin optical wani nau'in onu ne, na mai amfani ɗaya ne, modem ɗin optical kuma ana iya cewa shine desktop onu.
2, babban abin da ake buƙata shine ga ƙarin masu amfani, wato, tashar wutar lantarki tana da tashoshin pon guda 8 zuwa 24. Na'urar modem ɗin gani tana da tashoshin wutar lantarki guda 1-4 kawai.
Bambanci tsakanin modem na gani da ONU:
Ana amfani da modem na gani gabaɗaya lokacin da manyan abokan ciniki ke amfani da shi, galibi don samun damar bayanai na musamman.
Nau'in katin modem na gani da kuma na tebur, nau'in katin gabaɗaya yana sanya ɗakin injin.
Yawanci ana sanya tebur a kan abokin ciniki. Ana amfani da ONU don samun damar shiga cibiyar sadarwa ta gida mai faɗi. Babban bambanci shine daga katin ɗakin da aka haɗa da kyan gani zuwa kyan gani na tebur na abokin ciniki, kyan gani biyu suna da nau'ikan zare, kuma daga ɗakin da aka haɗa da OLT zuwa abokin ciniki, ONU da yawa suma suna ɗaukar nau'ikan zare biyu kawai, kuma tsakiyar yana tafiya ta hanyar tsari na rabawa. Bambanci tsakanin modem na gani da ONU shine ONU yana adana albarkatun fiber core, kuma modem na gani yana da rahusa, kuma kyan gani biyu suna da ɗaruruwan guda. Wane irin amfani za a yi, cikakken bincike na farashin, bisa ga yanayin.
Lokacin Saƙo: Disamba-14-2023