Ithelevishini yezindlela ezimbili

Ukusetshenziswa kokuhlanganisa ikhebula ku-TV enezindlela ezimbili kudlala indima yokudlulisa isignali. Kuhlelo lukamabonakude lwezindlela ezimbili, isignali idinga ukudluliselwa emishinini yokuphela ngayinye ngezintambo. Amakhebula okuhlanganisa ahlanganisa izintambo nezixhumi. Ukukhethwa kwekhebula kufanele kusekelwe ezintweni ezifana nemvamisa yesiginali, ibanga lokudlulisela, ukungavikeleki komsindo nokunye. Isixhumi siyingxenye eyinhloko yokuxhuma izintambo ndawonye, ​​futhi sidinga ukuba ne-conductivity enhle nokusebenza okuphikisayo ukuze kuqinisekiswe ikhwalithi yokudluliselwa kwesignali. Kusistimu ye-TV yezindlela ezimbili, ukukhethwa nokufakwa kwamakhebula okuhlanganisa kunomthelela omkhulu kukhwalithi yesiginali. Uma ikhebuli ingakhethiwe kahle noma uxhumo lungaqinile, kuzoholela ekulahlekeni kwesignali, i-crosstalk, umsindo nezinye izinkinga, ezithinta umbono nomsebenzisi.