On Wed, Aug 09, 2000 at 08:11:14AM -0400, http account wrote: > ------------------------------------------------------------ > 3. Around 1:50, noticed event rate = 0 in DAQ. Stopped the > run. Got a lot of EventBuilder error. MC called to ask > why scalers were stuck. Reset the scalers in LumiScaler. > Individual ZDC and BB were counting, the others remained > at 0. Visual scalers in FEH were stuck too. Reset them > but remained at 0. Called Konstantin and Dana. > Dana came around 3:00. Cycled power of some crates NIM > bins and got scalers back. See logbook for details. > Got the DAQ work when only camac and fb4 partitions were > selected => TPC and DC partitions screw the DAQ. > Sent an email to Bob Scheetz to check TPC readout. > ------------------------------------------------------------ The problem was caused by the TPC trigger board lockup. It was hard to find but easy to fix- by cycling power on the Slow Controls VME crate. -- Konstantin Olchanski Physics Department, Brookhaven National Laboratory, Long Island, New York olchansk@bnl.gov
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