Detection system (Detection system)Dattilo, Marque - 20:06 Wednesday 10 August 2011 (30077)
Print this reportPeltier electronics problemAt 14H30, the OMC flag indicating a problem with the Peltier electronics of the OMC get red. Did not understand really if it get red for a good reason (plot1). Anyway, the operator followed the procedure and went in the detection lab to switch off and on the electronics. After switching it on, the signals, this time were really wrong (plot2). He repeated the operation another time and the signals were still wrong (plot2): the current sent to the OMC Peltier started to increased even if the control state was "Monitor" (means: current should be 0). So he let the electronics off.
We waited one hour, switched on the electronics and everything get back to normal (plot3).
The reliability of the flag needs to be checked. This electronics has strange behaviour from time to time anyway.
