[evlatests] 400 ms tests last night

[Rob Long]

Hi Walter,

      If I understand correctly, you saw no dropouts on ant 18 at 
X-band, A & C?

Rob

Walter Brisken wrote:
> 
> Last night I spent about an hour looking at 4 bands (L C X K) at 400 ms 
> integration times in hope to shed more light on the 10 second dropouts.  
> I failed to remove the calibrator code so some (perhaps 1/4) of the data 
> is missing.
> 
> Dropouts are clearly seen in all IFs except L band IFs B and D.  There 
> is something really weird going though with frequency dependence.  In 
> the A/C IF pair the amplitude drops to about 60% of the nominal value 
> for a single 400 ms integration before recovery, regardless of band.
> 
> On the B/D IF:
>     L-band -- dropouts not visible
>     C-band -- dropouts to 97% of nominal amplitude
>     X-band -- dropouts to 95% of nominal amplitude
>     K-band -- dropouts to 65% of nominal amplitude
> 
> 
> This data shows "jags" in phase very clearly if that is still of interest.
> 
> -W
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