How to force a manual scan?

  • After installing TVheadend server on an RPI2 I went through the setup wizard, selected DVB-T Network, my adapter was found and then I had to select from a number of Muxes - not sure what they are but I selected one and a scan found 8 channels. I thought there ought to be around 30. That's what I get when the aeriel is connected to the TV.

    How do I force a manual scan?

    I notice if I try to 'Edit Network, I can select Pre-defined muxes but I only get a choice of 8 locations (for Poland). Is this simply a hard coded text file which can be updated?

    I also notice under Advanced settings, the Provider's network name is Emitel. Where does this come from? I guess this is the telecomms regulator in Poland...

    I'm guessing that I only find the channels on one mux and I might get more from other muxes...but how?