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    User name A. Camsonne

    Log entry time 15:58:46 on December 11, 2009

    Entry number 306244

    keyword=Compton issue with Lecroy scaler initialization

    The same problem as this morning happened when rebooting the Compton, the scaler 1151 could not be initialized at download and the acquisition does not do anything then. By reproducing what I tried this morning I figured out an odd thing. One can initialize the scaler by typing on the vxworks prompt : scalerLecroyInit()

    you get 0xffffffff if it does not find the board and that was happening when I typed it on ROC1 though it worked on ROC2 ( both CPUs are in the same crate ). So either ROC1 start to have problem, or there is some backplane issues or ROC2 interferes with ROC1.

    We might need a spare 2306 in case ROC1 starts to die.

    So if you see looking up in the history of ROC1 something like : scaler Lecroy 1151N UNINITIALISED

    type in ROC2 window : scalerLecroyInit()

    and do a coda reboot and it might work...

    A copy of this log entry has been emailed to: rom@jlab.org,abbottd@jlab.org,mfriend@jlab.org,dwang@jlab.org,pking@jlab.org