
Understanding input source also requires one's understanding of different TV inputs. Normally, if one is using a coax connection from the receiver to the television, the TV itself has to be set to either channel 3 or 4, and in case of a TV number 2, it has to be set on either channel 60 or 73.
Now for HD televisions, the task is somewhat complicated because of several input sources it caters. Below is a simple checklist of available cable connections in the market that one can use to connect to his TV.

Coaxial Cable (Can be RG6, RG11)

RCA Cable also known as Composite Cable

Component Cable, also known as Ypbpr Cable

DVI Cable or Digital Video Interface

HDMI CAble or High Definition Multimedia Interface

HDMI to DVD CAble

S-Video Cable

Toslink Cable