Digital Multiplexer: inkcazelo, injongo, iintlobo

A multiplexer digital sisixhobo indibaniselwano ubhalo nelungiselelwe ugqithiso ezilawulwa data evela kwimithombo data eliqela isiteshi kwimveliso. Enyanisweni, le fowuni i iiswitshi ezininzi digital ngokokuma. Kubonakala ukuba iswitshi i wedijithali multiplexer input iimpawu zibe umgca imveliso olulodwa.

Le fowuni ine amaqela amathathu amagalelo:

• idilesi, ikhowudi yokubini leyo ichaza ukuba izakuba ngowuphi igalelo ulwazi liqhagamshelene imveliso;
• ulwazi;
• Uvumela (ngezisombululo).

KwiSekethe ehlangeneyo lwedijithali multiplexer eveliswe 16 unawo amagalelo ulwazi ubuninzi. Ukuba unit eqikelelwayo kufuna isixa esikhulu, apho isakhiwo yakhiwe ekuthiwa umthi multiplexer chips eziliqela.

multiplexer Digital ingasetyenziswa ukuze kuyondelelaniswe phantse nayiphi iyunithi ubhalo, nto leyo ibabambezelayo ekubeni kunciphisa inani leesekethe ezisetyenziswa izinto logic.

multiplexers Imithetho izixhobo yokuqaphela olusekelwe:

• imephu Karnaugh yakhelwe umsebenzi output (njengoko amaxabiso imisebenzi variable);
• olukhethiweyo kwi umyalelo ukusetyenziswa yesekethe multiplexer;
• iteyiphu yephepha isizalo zakhiwe, ekufuneka elungelelene ngokomyalelo esetyenziswa multiplexer;
• isizalo okubangelwa kufuneka ezibekwe kwimaphu Karnaugh;
• emva koko kwenziwe umsebenzi sokunciphisa ngokwahlukileyo kwinkalo nganye uluhlu;
• ngokwesiseko zokunciphisa iziphumo eziyimfuneko ukwakha wesekethe.

Ithiyori ngoku ukuziqhelanisa. Cinga apho isicelo izixhobo ezinjalo.

multiplexers Flexible zisetyenziselwa ezingenisa imisinga digital (primary) ngesantya 2048 kbit / s ye uphawu analog (intetho), kunye ujongano digital lwe data cross-ukudibanisa iindlela ze-elektroniki kwi-64 kbit / s, wayithumela umlambo yedijithali ye IP / womnatha Ethernet kunye lokuguqula umgca kweesiginali kunye namalungu omzimba.

Ekubeni kwisixhobo onjalo kwakhona ku-60 (kwezinye iindlela, eli nani kungaba ngaphezulu) yokuyeka analog ngo-1 okanye ezi-2 E1 128 okanye iisethi rhumela ezine E1. Ngokuqhelekileyo, isiphelo analog PM ezivelileyo imigca ukuba band kweesiginali okanye inkqubo alarms kuphunyezwa kwi ijelo esahlukileyo. Ezi ndlela ilizwi kufuneka zixinaniswe ku-32 okanye 16 kbit / s etshaneli nganye, isebenzisa ikhowudi ADPCM.

multiplexers Flexible zikuvumela ukuba usebenzise uxhulumaniso multicast, okt ukunika imiyalezo evela kwenye imiphantsi digital okanye analog kwi nabanye abambalwa. zisetyenziswa lokubonelela iiprogram zeradiyo ngaxeshanye kwiindawo ezininzi ezahlukeneyo.

multiplexers Optical - zizixhobo yenzelwe ukusebenza imijelo data usebenzisa imiqadi ukukhanya asitshintshe awo okanye kwisigaba nothango kunye neembono. Izinto eziluncedo ze zixhobo ezo ziquka ukomelela, ukhuseleko zobugcisa, ukhuseleko ngokuchasene kusiko lweenkcukacha zesini.