[widar-wg] WIDAR status 31may11

[Bruce Rowen]

On May 31, 2011, at 4:54 PM, Michael Rupen wrote:

> Sonja put in a new version of the CM (2011-05-31 20:34 UT) which  
> purports
> to solve the first-scan problem, and also sends alert messages  
> (currently
> blocked at the CM however).  We have seen no sign that this causes
> problems & so propose running with the new version overnight.
>
> C_quad* shows several BlB problems:
>
> * b104-t-4 is still bad, as expected
>
> * b106-b-4: The X2Y5 LTA claims the CC is flagging all the data,  
> altho'
>   the CC itself seems perfectly happy (claims no errors).  This is  
> true
>   regardless of the input streams.

Alert messages show that this CC has been having 'issues' since  
2011-05-31T05:10:50.60Z.
The Zombie trigger* has been forcing CC resets.

*Not all 32 data lines from the CC to LTA are toggling, CC is in use,  
CC power reports OK, no 'frame abort' indicators.
>
> * b108-b-5 has no power.
>   This led the CBE to complain: Failed to convert blb hostname b108- 
> b-5
>     to serial number.
>     - so far so good!
>
>   But, when the CM tries to configure b108-b-5, it hangs waiting for
>   the CBE to respond.  Martin & Sonja should get together to be sure
>   something sensible happens in this case.
>
> * b107-t-2: upper RXP showed lots of errors on wafer 31 (ea06-BD)
>     although b107-t-3 looked fine.
>   The CTRL LED showed HM lock YELLOW rather than the hoped-for GREEN.
>   A few minutes later this spontaneously cleared up.  Some sort of
>   synchronization issue???

b107-t-3 shows a burst of RXP errors at that time.


-Bruce

>
> For now I propose we avoid these BlBs for scientific observation and
> check on them again tomorrow.
>
>                     Michael
>
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