0000425: There is the power supply problem on 8X,8Y in the IVC.
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ID Category Severity Reproducibility Date Submitted Last Update
0000425 [IVC/ADC] power supply major always 05-08-13 12:00 29-11-13 09:48
Reporter Yuan Tang View Status public  
Assigned To Juergen Morawietz
Priority normal Resolution open  
Status closed  
Summary 0000425: There is the power supply problem on 8X,8Y in the IVC.
Description There is the power supply problem on 8X,8Y in the IVC.
Additional Information
RT 8
sub-band 0, 1, 2, 3, 4, 5, 6, 7
polarisation X, Y
Attached Files

- Relationships

- Notes
(0000418)
Juergen Morawietz
07-08-13 10:01

 6.8.2013:
Together with Jur: had a look at the Lantronix modem.
There where no clues that the unit does not work.

Checked voltages and oscillogram of the power supply.
All within specs.

Jur than rebooted the system an the error messages where gone.

Awaiting whether the problem will occur again.
Possible measures: place power supply from RT 2, 4 or 5
Replace Lantronix interface.
 
(0000419)
Juergen Morawietz
13-08-13 11:44

 12.08.2013:
- Jurjen interchanged IVC power supply RT8 with RT4: Problem was not solved
- For test purpose interchanged all(!) DDS units of RT8 with RT7. Awaiting next occurence of problem.
 
(0000420)
Juergen Morawietz
19-08-13 14:47

 15.07.2013:
- There was now a problem with 4,6,7 and it seems that the "Power Supply Problem"
  has shifted to RT7. The DDS units from RT5 have been placed in 7 and finally
  there was some suspect DDS unit (7X Bd.7) which alarm LEDs lightened up.
  After replacing this unit again, the system worked again.
 
(0000423)
Juergen Morawietz
29-11-13 09:48

 no problems over the last 3 month -> closed
 

- Issue History
Date Modified Username Field Change
05-08-13 12:00 Yuan Tang New Issue
05-08-13 12:00 Yuan Tang RT  => 8
05-08-13 12:00 Yuan Tang sub-band  => 0, 1, 2, 3, 4, 5, 6, 7
05-08-13 12:00 Yuan Tang polarisation  => X, Y
05-08-13 12:01 Yuan Tang Assigned To  => Juergen Morawietz
05-08-13 12:01 Yuan Tang Status new => assigned
07-08-13 10:01 Juergen Morawietz Note Added: 0000418
13-08-13 11:44 Juergen Morawietz Note Added: 0000419
19-08-13 14:47 Juergen Morawietz Note Added: 0000420
30-08-13 11:33 Juergen Morawietz Status assigned => testing
29-11-13 09:48 Juergen Morawietz Note Added: 0000423
29-11-13 09:48 Juergen Morawietz Status testing => closed