Calibration and Setup Procedures
Calibration and Setup Procedures
Calibration and Setup Procedures
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Level 1 Calorimeter TriggerContext diagramLAr CalorimeterTile CalorimeterOnlineSoftwareDCSL1 CaloTriggerTTCBUSYLevel 2CTPReadoutL1Calo context diagram.3 Configuration ParametersThe complete configuration of the trigger processor requires a large number ofparameters. Some of these are derived from trigger menu choices. However thebulk of them must be determined by calibration.The complete list of parameters for each type of module is described in [3].Below we summarise the main calibration parameters.Clocks: delays for the TTCrx output clock(s), possibly also some otherTTCrx parameters.Readout: the L1Accept latency for each readout pipeline memory.Energy calibration: the lookup tables in the PPMs.BCID: the FIR filter coefficients <strong>and</strong> saturated BCID thresholds.Voltage levels: the FADC zero level <strong>and</strong> external BCID disriminator thresholds.Input timing: the FADC strobe phase <strong>and</strong> synchronisation delays.2
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