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    User name Carlos

    Log entry time 05:51:32 on October 27, 2010

    Entry number 336965

    Followups:

    keyword=Pedestal issues with new ARS firmware (E11)

    We noticed an issue with the pedestals of the new firmware E11. Fig1 shows calorimeter channel 28 for E10 and Fig2 for E11. The pedestals fluctuates much more in E11, introducing a considerable noise.

    This has been noticed only in 4 blocks, corresponding to channel 11 of 4 different ARS boards (these 4 boards happen to be the first two in the readout list of each crate).



    A copy of this log entry has been emailed to: braydo@jlab.org, magne@jlab.org, camsonne@jlab.org



    Fig1: E10 firmware



    Fig2: E11 firmware