CAL_ULD: CAL range selection discriminator settings

The CAL_ULD precinct controls the range switching discriminator CAL data.

• Registers:
  

  Group	Register Name	Instances	Multiplicity	Subsections	Type	Width (bits)
  CFE	rng_uld_dac	16 x 4 x 4 x 12	1	1	mask	16

• Methods: BCAST | CALIB | SETTINGS
  SETTINGS uses an ancillary file to set all the registers.
  CALIB uses an ancillary calibrations file and constants to set all the registers.
• Ancillary files:
  CAL_ULDSettings.
• Constants: None.