docs: def scan_band(self, band, **kwargs):
          """Run Kalibrate for a band.
  
          Supported keyword arguments:
          gain    -- Gain in dB
          device  -- Index of device to be used
          error   -- Initial frequency error in ppm
  
          """
  
          kal_run_line = fn.build_kal_scan_band_string(self.kal_bin,
                                                       band, kwargs)
          raw_output = subprocess.check_output(kal_run_line.split(' '),
                                               stderr=subprocess.STDOUT)
          kal_normalized = fn.parse_kal_scan(raw_output)
          return kal_normalized