May 21, 2008 online meeting minutes: Difference between revisions
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present: Sergey Boyarinov | present: Sergey Boyarinov, Sergey Pozdnyakov | ||
During last month several hardware failures were observed: | During last month several hardware failures were observed: | ||
- PMC broke in tage3 and sc2 - replaced | - PMC broke in tage3 and sc2 - replaced, will be tested in test setup | ||
- 4 timing discriminators 2313 in CC broke after accidental power recycle - replaced | - 4 timing discriminators 2313 in CC broke after accidental power recycle - replaced; removed boards were tested in test setup | ||
and appeares to be fine; more tests will be performed | |||
- wrong signal polarity was discovered on output from new trigger - swapped cable | - wrong signal polarity was discovered on output from new trigger - swapped cable | ||
installed (fortunately data were fine, but it maybe desasterous error !) | installed (fortunately data were fine, but it maybe desasterous error !) | ||
| Line 12: | Line 13: | ||
Software problems: | Software problems: | ||
- ROCs crashes, EB recover | - ROCs crashes, EB have to be restarted every time after ROC crashed; it is still unclear why ROCs are crashing | ||
- preshower setup problem | occasionally, it can be different reasons; internal monitoring was developed to debug several software loops | ||
inside ROC and PMC, it will be activated in an attempt to get more detailed information; EB should be able | |||
to recover on 'reset' transition; | |||
- preshower setup problem: slow download, prestart etc; change CPU did not help. jlab IP address did not help, will study | |||
- low network speed in pmc880 and pmc280, while 2800 is good - another device; will study at summer | |||
Revision as of 09:16, 21 May 2008
present: Sergey Boyarinov, Sergey Pozdnyakov
During last month several hardware failures were observed:
- PMC broke in tage3 and sc2 - replaced, will be tested in test setup
- 4 timing discriminators 2313 in CC broke after accidental power recycle - replaced; removed boards were tested in test setup
and appeares to be fine; more tests will be performed
- wrong signal polarity was discovered on output from new trigger - swapped cable
installed (fortunately data were fine, but it maybe desasterous error !)
- power supply broke in croctest10 - replaced, sent to repair to WIENER
Also old NIM bin send to repair to ORTEC
Software problems:
- ROCs crashes, EB have to be restarted every time after ROC crashed; it is still unclear why ROCs are crashing
occasionally, it can be different reasons; internal monitoring was developed to debug several software loops
inside ROC and PMC, it will be activated in an attempt to get more detailed information; EB should be able
to recover on 'reset' transition;
- preshower setup problem: slow download, prestart etc; change CPU did not help. jlab IP address did not help, will study
- low network speed in pmc880 and pmc280, while 2800 is good - another device; will study at summer