0000081: All the amplitudes of ifrs and TPs are bad at YY in band2
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ID Category Severity Reproducibility Date Submitted Last Update
0000081 [DZB] 0.unknown/unspecified major sometimes 31-10-08 11:09 12-11-08 12:10
Reporter Yuan Tang View Status public  
Assigned To Hans Weggemans
Priority normal Resolution open  
Status resolved  
Summary 0000081: All the amplitudes of ifrs and TPs are bad at YY in band2
Description The problem happened several times in the calibrator observations for
VLBI, see 10805317(4 bands),10805319(8 bands),10805363(4 bands).
Additional Information 27/10,2008
To locate the problem of band2,YY(all YY Ampls and TPs are bad), the postselector
board of band2 has been swapped with the board of band4 in the ADC.
nr subbands 1
nr polarisations
nr channels
bandwidth
multi-subarray no
recirculation no
Attached Files

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- Notes
(0000105)
Bert Woestenburg
12-11-08 12:10

 Problem did not occur again after 27/10/08. Therefore status to resolved.
 

- Issue History
Date Modified Username Field Change
31-10-08 11:09 Yuan Tang New Issue
31-10-08 11:10 Yuan Tang Status new => assigned
31-10-08 11:47 Yuan Tang Additional Information Updated
31-10-08 11:52 Yuan Tang Status assigned => progressing
03-11-08 09:09 Bert Woestenburg Project submission => DZB
03-11-08 09:10 Bert Woestenburg nr subbands  => 1
03-11-08 09:10 Bert Woestenburg multi-subarray  => no
03-11-08 09:10 Bert Woestenburg recirculation  => no
03-11-08 09:10 Bert Woestenburg Assigned To  => Hans Weggemans
03-11-08 09:10 Bert Woestenburg Category back-end => 0.unknown/unspecified
12-11-08 12:10 Bert Woestenburg Note Added: 0000105
12-11-08 12:10 Bert Woestenburg Status progressing => resolved