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    User name R. Michaels

    Log entry time 13:05:16 on April 5,2008

    Entry number 230053

    This entry is a followup to: 229917

    keyword=helicity scalers fixed (L-HRS)

    I fixed the helicity gating on L-HRS scalers. The 4th input of
    the control inputs on the scaler is a veto. It must be the MPS
    with correct polarity. I changed this from the NIM-bar output of
    a logic module to the NIM output, after verifying on a scope.
    Since all this was fine 2 weeks ago, I surmise that someone flipped
    the polarity of MPS in the past two weeks, probably to fix the
    helicity info in the datastream. My change only affects scalers
    and they look fine now.