First things first, you will need to have software support for it.
If you have software support installed in your machine for your card, and you have linuxtv-dvb-apps installed,
Use your own paths, and you use dvb-t don't you?
Take the output of that and make a channels.conf, put it where your media player can find it.
Then use a player to watch or record digital tv. Example
Then use the h and k keys to change channels or
To watch a particular channel
"Failed to open frontend"
Use scan then instead of dvbscan.