ACD_Veto: ACD Veto threshold register settings

• Registers:
  

  Group	Register Name	Instances	Multiplicity	Subsections	Type	Width (bits)
  AFE	veto	12 x 18	2	1	int	6

  The veto register is actually two registers ``veto_dac'' and ``veto_vernier''. However they control the same voltage level, veto_dac being a coarse knob and veto_vernier being a fine one. By design 1 veto_dac count is 32 veto_vernier counts. This is needed to for precision tunning of the ACD veto threshold and the 0.01 MIP level. Since there are two registers, the vote file xml syntax differs a bit in order to be able to specify both register values. Here is an example:

        <AFE_veto>
          <broadcastDouble>0:0</broadcastDouble>
          <exceptDouble arc='4' afe='7'>1:4</except>
        </AFE_veto>
  

• Methods: BCAST or CALIB_MIP or SETTINGS
  CALIB_MIP uses calibrations to set the thresholds in terms of MIP equivalents.
  SETTINGS uses an input file with the register settings .
• Ancillary files:
  ACD_PedestalCalibration give pedestal values in PHA counts.
  ACD_MIPCalibration expresses MIPs in terms of PHA counts.
  ACD_VetoElectronicsCalibration maps registers settings to actual trigger points in PHA.
  ACD_VetoInMipConfiguration gives the desired threshold in MIPs for each channel.
  ACD_VetoInPhaConfiguration gives the desired threshold in PHA for each channel.
  ACD_VetoSettings gives the registers settings.
• Constants:
  TileMip: number of MIPS to set threshold at for tiles.
  RibbonMip: number of MIPS to set threshold at for ribbons.
  NaMip: number of MIPS to set threshold at for NA (Not attached) channels.