Tvheadend

I have setup TVheadend on Qnap with HDHomerun. I have Verizon in Boston and using scheduledirect and cablecard. Almost giving up after scanning millions of posting. It seems that I can not find any documentation on how to configure it with the above setting. I have HDHomerun configured with the tuner ATSC. I try to figure out what are the difference between ATSC or DVB-T or DVB-C. ATSC seems to be working. I configured scheduledirect and able to downloaded the schedule, I can see the channels but they are not mapped with the schedule, so it looks like I have raw channels found. I use the map but it fails to find channels.

Any help will be greatly appreciated.