Troubleshooting: Data not Analyzed

If an analysis process pulls events from a netfeed socket, but doesn't seem to analyze them, possible reasons include:

• MiniDAQ is not producing the necessary tables; if, for example, the analysis needs 8-bit or 10-bit data tables, these have to be enabled through Run Control before the getset for the run.

• The readout-board sector/location assignments are incorrect, or different from those expected by the analysis. Note that the sector/location assignment is loaded by the readout board at power-up, and by MiniDAQ from the data header of first event of a run; attempts to modify it later will fail.

• Pedestal-run tables appear in two sequences - the first group from the first enabled Rosie on each i960, the second group from the second enabled Rosie. A pedestal analysis task will only be getting tables from one sequence at a time.

• The analysis may be missing essential calibration data, either from the data stream (e.g., gain tables in the Begin Run event) or from an offline database.

Page maintenance:

Roy Bossingham, LBNL
RRBossingham@lbl.gov