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    User name V. Sulkosky

    Log entry time 20:38:38 on February 10, 2011

    Entry number 346322

    This entry is a followup to: 346262

    keyword=Programmable Delay 4518/300 Setup in Weldment

    I connected EDTM and trigger signals to the LeCroy 4518/300 module in
    the BB weldment to set up the coincidence time.

    Here is the channel assignment so far with indexing from 0:
    4518 Channel     Input         Output          Cable In    Cable Out
    ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
    0                 T1         Delayed T1       1 (blue)     Short Orange 
    1                 T2             T2           2 (green)    5 (red)
    2                 T3         Delayed T3       3 (yellow)   6 (brown)
    3            T1 from Ch 0    Delayed^2 T1    short orange  4 (orange) 
    12           EDTM pulser 1   EDTM LHRS
    13           EDTM pulser 2   EDTM RHRS
    
    To form the coincidence between T1 and T3 (left and right arms), I found that I needed more than 128 ns delay to get a good coincidence. Hence, T1 is delayable by about 256 ns. This should be more than plenty.