How to change DRS parameters

cd working/drs4command.list

No need to compile it, if you change the file in the working directory. ! Pay attention, if somebody does a makeinstall it overwrite your file! To avoid it you could change the file from

cd dreamDaq/drs4command.list
and now you need to do makeintall and you will overwite the file that is in working.

Parameters to be changed

  • sampling frequency
WRITE_REGISTER 80D8 2 # frequency 1 GS/sec  
WRITE_REGISTER 80D8 1 # 2.5 GS/sec 
WRITE_REGISTER 80D8 0 # 5 GS/sec 

  • enable readout 1 group or 4 groups
WRITE_REGISTER 8120 f    # Read all 4 groups
WRITE_REGISTER 8120 1    # Read only first group

  • CHANNEL VERTICAL OFFSET
The MCP has positive signal, you need to put low offset. The contrary is for the PMTs
## offset configuration for PMTs (negative signals)
##WRITE_REGISTER 1098 F6800     # DAC GROUP0 OFFSET all ch (baseline @ 3440)
WRITE_REGISTER 1198 F6800     # DAC GROUP1 OFFSET all ch
WRITE_REGISTER 1298 F6800     # DAC GROUP2 OFFSET all ch
WRITE_REGISTER 1398 F6800     # DAC GROUP3 OFFSET all ch

#Offset configuration for bipolar signals
##WRITE_REGISTER 1098 F8F00     # DAC GROUP0 OFFSET all ch set to 0mV (baseline @ 2024)

#Offset configuration for MCP (positive signals)
WRITE_REGISTER 1098 FBF00     # DAC GROUP0 OFFSET all ch (baseline@450)

-- SilviaFranchino - 2015-10-28

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Topic revision: r1 - 2015-10-28 - SilviaFranchino
 
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