Ithelevishini enezindlela ezimbili

Ukusetshenziswa komhlangano wekhebula ku-TV enezindlela ezimbili ikakhulukazi kudlala indima yokudluliselwa kwesiginali. Ehlelweni lwethelevishini oluzindlela ezimbili, isiginali idinga ukudluliselwa kumadivayisi womuntu ngamunye ngezintambo. Imihlangano ye-Cable ifaka izintambo nezixhumi. Ukukhethwa kwekhebula kufanele kususelwe ezicini ezifana nemvamisa yesiginali, ibanga lokuhambisa, ukungatheleleki komsindo nokunye. Isixhumi yingxenye ebalulekile yokuxhuma izintambo ndawonye, ​​futhi kudingeka kube nokuvuselelwa okuhle nokusebenza kokulwa nokulwa nokuqinisekisa ikhwalithi yokudluliselwa kwesiginali. Ohlelweni lwe-TV enezindlela ezimbili, ukukhethwa kanye nokufakwa kwemihlangano yamakhebula kunethonya elikhulu kwikhwalithi yesiginali. Uma ikhebula lingakhethwanga kahle noma ukuxhumana akuqinile, kuzoholela ekulahlekelweni kwesiginali, i-crosstalk, umsindo kanye nezinye izinkinga, okuthinta umbono womsebenzisi kanye nesipiliyoni.