Now we have digitization compulsory in our area. So I have brought a SET top box to be attached to it. The SetTop Box has 4 ports
1. One Antenna In - Connected to the cable connection from the cable operator
2. One Video Out (Composite)
3. Two Audio (L+R)
Now I have an AV cable which I have connected to the back of set top box in the audio video ports.
and on the remaining yellow video cable I have attached a connector like this (https://dl.dropbox.com/u/57629104/c.jpg) (rca to s-video) since the TV tuner only had the option for S-Video in. Moreover the cable shipped with the TV tuner box.
I am getting both audio and video. but the issue is that the video is BLACK AND WHITE. There is no problem with the signal that I receive from the operator as I tried with RF modulator and it worked. The only thing is very poor picture quality.
Also the TV tuner box can detect NTSC/PAL. I have also checked that. No issues with that.