0000379: The problem on the COR1
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ID Category Severity Reproducibility Date Submitted Last Update
0000379 [DZB] correlator board crash always 28-09-11 11:38 03-10-11 14:28
Reporter Yuan Tang View Status public  
Assigned To Sjouke Zwier
Priority urgent Resolution open  
Status resolved  
Summary 0000379: The problem on the COR1
Description There is the problem on the correlator(26/09,2011):
  The problem started at UT11:06,25/09 and the error message of "Server got timeout" appeared.
  I failed to solve the problem in home and I went to the Wbork. After rebooted the rtcor1 and also
  rebooted the DZB the system worked again. But the same problem happened again at UT21:14,25/09.
  Now Sjouke and Albert are looking at the problem.
Additional Information
nr subbands 1
nr polarisations
nr channels
bandwidth
multi-subarray no
recirculation no
Attached Files

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- Notes
(0000360)
Yuan Tang
28-09-11 11:41

 The new real time unit of COR1 had been replaced on 27/09 to solve the problem of the COR1.
 
(0000361)
Yuan Tang
28-09-11 12:36

 Hello Yuan,
 
Report from 26/27 sept. 2011:
 
After several error messages of "Server got time out " appeared this weekend,
we noticed that there was also a faulty report "Sysfail-status" at the Realtime processor (Dar17) for Corr. Unit1.
This has something to do with a not correct status/signal on the VME-bus for Cor. Unit1.
Therefor I have adjusted for Cor.Unit1 all the Power supplies for this VMEbus.
To avoid the same problem will happen again we decided also in confer with Albert B.,
to replace the Real Time system for Cor.Unit1.
So Teun Grit and I replaced the Real time processor(Dar17) by a spare one (Dar31).
 
Due regular maintenance the upper Fan tray in Cor. Unit is replaced.(new ball-bearings)
 
Groet Sjouke
 

- Issue History
Date Modified Username Field Change
28-09-11 11:38 Yuan Tang New Issue
28-09-11 11:38 Yuan Tang nr subbands  => 1
28-09-11 11:38 Yuan Tang multi-subarray  => no
28-09-11 11:38 Yuan Tang recirculation  => no
28-09-11 11:39 Yuan Tang Assigned To  => Sjouke Zwier
28-09-11 11:39 Yuan Tang Status new => assigned
28-09-11 11:41 Yuan Tang Note Added: 0000360
28-09-11 11:41 Yuan Tang Status assigned => testing
28-09-11 12:36 Yuan Tang Note Added: 0000361
03-10-11 14:28 Yuan Tang Status testing => resolved