On my home theater system, my receiver is set to "auto". I have a 5.1 system. My receiver always displays "digital" even when watching a non-digital broadcast. I can manually switch in to analog, and then it will say "analog", but the sound is much quieter. Is this normal operation?
I have a Marantz SR5600 receiver, connected to a Cablevision Hi-Def cable box. The little box on the receiver display correctly indicates which speakers are being used (either 2, 3, or 5 lights appear, each representing 1 speaker). I have an optical cable connected from the cable box to the receiver. For non-digital TV broadcasts, 2 or 3 lights appear, but it still says "digital". Is this normal? Thank you for your help. PS: I'm not sure what "digital-digital" means.

i can't get the sound to come through when watching tv but i can get the DVD player to work. I am not sure what i am doing wrong, or if i am missing a cable or something. I have a VIZIO HDTV if that helps any. I have an HDMI cable going from the cable box to the tv, and then i used the RCA cables from the tv to the home theater system but that i not working just the DVD player.