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    User name miham

    Log entry time 06:44:23 on May 02, 2009

    Entry number 270390

    Followups:

    keyword=DAQ problems

    At 6:30am we had some problems with the DAQ. The Dead time for the left
    arm was 100% and the LEFT Coda wasn't counting. We have killed both
    codas. We have checked if ROCs are alive. They were. The only problem
    that we encountered was with TS0. The connection with it was lost. The
    message was saying that the connection was closed by a foreign host. We
    were trying to connect back to it but our connection was REFUSED. In
    spite of that, we started both codas again. While we were configuring the
    left arm, the error messages in the status windows start to appear that
    ROC9 and ROC10 did not report status form more than N seconds. When
    we opened the ROC windows again in order to reboot them, we realized,
    that they are already rebooting. Therefore we waited until this process
    finished, and in the end checked if ROCs respond. Then we restarted left
    Coda again and started new runs: #1756 and #20662. Now everything
    looks normal again. The dead times are 6% and 12% and rates are
    700 and 500 events/s

    These problems appeared just after we started runs #1755 and #20661,
    therefore are these two runs JUNK!

    A copy of this log entry has been emailed to: moffit, peter