[evlatests] Some further notes from L-band test

[Bryan Butler]

no visibilities because the correlator was broken (timing).  that's why we didn't run any science. 

       -bryan

Sent from my iPhone.


On Jul 18, 2012, at 12:04, Rick Perley <rperley at nrao.edu> wrote:

>    In reviewing  the switched power tables from last night's short 
> L-band run, some misbehaving antennas stand out. 
> 
>    ea13 A and B:  Power is totally dominated by receiver noise -- 
> essentially no sky signal.  System temperature about 500 K. 
>    ea17, IFs A, C, and D give essentially zero-mean noise for the 
> PDifs.  Only IF 'B' is normal. 
>    ea19, all IFs:  No useful information in the switched power. 
>    ea22B -- no useful information in switched power. 
>    ea23A  PDif is zero-mean noise.
>    ea28, C and D:  zero-mean noise for PDif.  (This is an old problem). 
> 
>    The test provided me no visibilities!  Something amiss with the 
> correlator.  I note that three other runs, taken before or after this 
> test are flagged by the archive as having missing scans. 
> 
> 
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