2.2 Initialization

  On every event, the structures CSTFADCRec are filled first. They contain, for each FADC, the following information:

• the PPC number
• the FADC number
• the FADC mask for Hits&Cluster mode
• the FADC mask for Monitor mode
• the start address of the Raw Data
• the start address of the Pedestals for the current Pipeline counter
• the start address of the Sigmas

In case the SiPPCUser routine is called for the first time (i.e. after a reset), all Pedestal and Sigma areas are then zeroed. A flag indicating whether the Constant Updating should take place for this event is then raised eventually (that's worked out from the event number).

At the end, the CST PPC Main Header Word is initialized (will be overwritten when the event is processed).