[evlatests] Continued Stress Test Development

Charles Kutz ckutz at nrao.edu
Fri Mar 14 09:57:22 EDT 2008


It looks like antenna 1 and 13 P-band receiver systems are FE's current 
problem children.  I backed the effort down a little this week on the 
P-Bands, but we will soon be swapping stuff around to sort them out.


Chuck


Rick Perley wrote:
>     Emmanuel and I continue to make the 'stress test' more bulletproof.  
> Data taken today for the purpose of testing the software reveals the 
> following problems:
> 
>     P-Band:
> 
>     Antenna 13 is back, but only barely.  Its sensitivity on all IFs is 
> low by a factor of about seven.  No coherent signals seen from antennas 
> 1 or 4.    All others look normal. 
> 
>     L-Band:
> 
>     Antenna 21 is low in sensitivity by a factor of about two in RCP 
> only (IFs A and B). 
> 
>     K-Band:
> 
>     Antenna 19 is low in sensitivity by a factor of about 2.5 on all IFs.
> 
>     Q-Band:
> 
>     The data were very 'ratty', for no obvious  reason.  Winds were not 
> strong, and skies were mostly clear.  Referenced pointing claimed to 
> give good solutions. 
> 
>     Otherwise, all was normal. 
> 
> 
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