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    User name Moffit/Subedi

    Log entry time 13:19:14 on May 06, 2009

    Entry number 271218

    keyword=ROC8 Busy to RightHrs TS wasn't working.

    Went into the RightHrs Hut to investigate if there was a problem with the ROC8 busy. Found that it was routed through a Level Translator... then into the TM module... input labeled C_IR.

    Watching the Frontend BUSY to the TS on the scope, we systematically removed each ROC Busy signal from the TM module. From this we determined that the Frontend BUSY to the TS was ignoring the ROC8 Busy.

    When we substituted one of the RightHRS Fastbus Busy with the ROC8 busy... found that the polarity of the Twisted Pair to TwinAx cable was incorrect at the level translator (also went through systematically to make sure a busy was invoked from each crate).

    Tried now plugging this ROC8 Busy into the C_IR input of the TM... and it's still ignored. Maybe this isn't the input we should be using.

    Plugged this into the B_IR input of the TM module, and it's still ignored. Maybe this input needs to be enabled through software... called Bob... he's looking into it.

    A copy of this log entry has been emailed to: rsubedi,zhaobo,vasulk,rom