code: def get_channel_name(self, group, index):
          
          gp_nr, ch_nr = self._validate_channel_selection(None, group, index)
  
          return self.groups[gp_nr].channels[ch_nr].name
docs: Gets channel name.
  
          Parameters
          ----------
          group : int
              0-based group index
          index : int
              0-based channel index
  
          Returns
          -------
          name : str
              found channel name