You will have to use the television's menu to set it to air. Once that is done you will have to tell the TV to scan for available stations. You should have been given an owners manual with the TV, if not, then you can go on the internet and download one for your model. I highly recommend reading the manual of these new digital TVs. The menu system can be somewhat confusing on some brands.
Scanning for available channels is the one thing I don't like about the new digital TVs. When traveling, we have to re-scan for available channels at every campground we stop at.
Bob and Joyce
2013 CC Silverback 29RL
2010 Ford F250 XL Crew Cab 6.4 liter diesel
ATU Local 788