Digital multiplexer: tsanangudzo, chinangwa, mhando

A multiplexer digital inogadzirisa kusanganisa chinhu chakagadzirirwa kuchengetedza kuendeswa kwemashoko kubva kune zvimwe zvinyorwa zvekutsvaga kusvika kune chikwata chinobuda. Kutaura zvazviri, chigadziri ichi chiverengero chema digital position switches. Icho chinosvika kuti iyo inonzi multiplexer digital inoshandiswa kwekuisa maziso kune imwe yero inowanikwa.

Iyi svondo ine mapoka matatu emitemo:

• Nhaurirano, nhamba yebhinari iyo inosarudza kuti chii chinyorwa chinofanira kuve chichibatanidzwa kune zvakabuda;
• Information;
• Kugadzirisa (stroking).

Mumakwikwi akabatanidzwa akabatanidza, multiplexer digital ane huwandu hwemashoko gumi nematanhatu emashoko. Kana iyo inofungidzirwa inoda inoda zvakawanda, saka sarudzo yezvinonzi "multiplexer tree" yemakirikiti akawanda anovakwa.

A multiplexer digital inogona kushandiswa kugadzira chidimbu chero chipi zvacho chinogadzirisa, zvichidaro kuderedza zvakanyanya nhamba yezvinhu zvinogadziriswa zvinoshandiswa mumatunhu.

Mutemo wekugadzira zvishandiso zvakabva kune multiplexers:

• Mepu yeCarnot inogadzirwa nokuda kwebasa basa (nehutano hwezvinoshandiswa mabasa);
• Mutemo wekushandiswa munharaunda ye multiplexer inosarudzwa;
• A masking matrix inovakwa, iyo inofanirwa kuenderana nehutano hwe multiplexer inoshandiswa;
• Izvo zvakakosha kuti iwedzere matrix inoguma pamapu eCarnot;
• Mushure meizvi, basa racho rakaderedzwa zvakasiyana pane imwe neimwe yematrice;
• Kubva pamigumisiro yekuderedza, zvinodiwa kuvaka chikwata.

Zvino, kubva munyanzvi yekuita. Chimbofunga kuti izvi zvinoshandiswa sei.

Flexible multiplexers yakagadzirirwa kuunza mitozi yedijito (primary) pamusana wekuita 2048 kbit / s kubva pamagumo analogog (kutaura), pamwe chete nemashoko kubva kudijiti yedhijidhi kuti zvibatanidze mhirizhonga dzemagetsi pamhanya we 64 kbit / s, kutapura kwema digital pane IP / Ethernet network uye nekushandurwa Zviratidzo zvitsvene uye masangano.

Nekubatsira kwechigadzirwa chakadaro, kusvika 60 (mune mamwe mafananidzo iyi nhamba ingave yakakura) inogona kusanganiswa nekuguma kweanorogue mu 1 kana 2 E1 mitozi kana 128 makatekiti emakiti mana eE1 streams. Kazhinji, zvinopera analogue ndeyeMDC inotevedzana ne-in-band chiratidzo, kana chiratidzo chinoshandiswa pane imwe nzira. Dhiyabhorosi data inogona kuomirirwa kusvika 32 kana 16 kbit / s nezera rimwe nerimwe, vachishandisa ADPCM kukodha.

Flexible multiplexers inobvumira kushandiswa kwekuparadzirwa kwemashoko, kureva kuti, kudyisa zviratidzo kubva kune imwe yenzira dzedhijidhi kana yeanalogo kune dzimwe dzakawanda. Inowanzoshandiswa pakurambidza mapurogiramu ekuparidzira panguva imwechete muzvikamu zvakasiyana zvakasiyana.

Mafuta akawandisa mafungiro akagadzirirwa kushanda nemishamba ye data ne rubatsiro rwezviedza zvitsvuku, izvo zvinopesana mukukura kwechikamu kana chechikamu chekusiyanisa, pamwe nekuwedzerwa. Kubatsira kwezvigadzirwa zvakadai kunosanganisira kushorwa kune dzimwe nzira, kunze kwekuchengeteka kwekugadzira, kudzivirirwa pakurwiswa kwemashoko akaparadzirwa.