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    User name R. Michaels

    Log entry time 16:37:39 on April21,2009

    Entry number 267245

    Followups:

    keyword=trig. mods, other problems

    1. On R-HRS we set the MLU to "pulse" mode. This made the output
    width normal. Looking through history this seems to be the
    correct mode.

    Bo recalls the L-HRS MLU does not have a strobe input. I didn't
    climb over there to check, but it should be checked.

    2. On R-HRS the inputs of trigger to the scaler are dangerous:

    a) T1 is only 25 nsec wide. I think the min. is 10 nsec and
    then the scaler doesn't count. Recommend >= 50 nsec.

    b) Worse, the signals oscillate. Thus they may cause multiple
    pulsing and artificial (wrong) deadtime. Suggest to clean up
    these signals, like they are being fanned out wrong or a bad cable.
    Bo is working on it.

    Inputs to the normalization scaler should be clean boxes.