Log entry time 14:44:48 on April 06, 2011

Entry number 354587

This entry is a followup to: 354535

Followups:

• 354589 04/06/11 14:57 V. Sulkosky BigBite Normalization Scalers Runs 3312-3322

Functionality to the SawDTMon Deadtime monitor and DAQ Heads up display has been restored. The problem seems to be similar to the issue seen by the F1TDCs last night, in that a data burst of some sort filled the buffer and it refused to empty.

Looking at the scalers that SawDTMon uses gave: 0: 4294967295(0) 1: 4294967295(0) 2: 4294967295(0) 3: 4294967295(0) 4: 4294967295(0) 5: 4294967295(0) 6: 4294967295(0) 7: 4294967295(0) 8: 4294967295(0) 9: 4294967295(0) 10: 4294967295(0) 11: 4294967295(0) 12: 4294967295(0) 13: 4294967295(0) 14: 4294967295(0) 15: 4294967295(0) 16: 4294967295(0) 17: 4294967295(0) 18: 4294967295(0) 19: 4294967295(0)

These show saturation on these channels and several attempts to read these were successful and gave the same numbers.

The solution was to power cycle the crate. This reset those scalers and SawDTMon is now functional again. Included is a picture of the monitor to show it's operation.

Figure 1