[evlatests] Modcomp-free: P-Band

Charles Kutz ckutz at nrao.edu
Thu Jun 14 19:01:41 EDT 2007


10 P is in fact broke, seems that the "A" rack has the P-Band noise 
diode always on, a ticket is open. Paradoxically C and U are OK. John is 
trying to sort it out.

I took a look at 28's FE screen while it was in P-Band this afternoon, 
all the screen parameters appeared to be nominal.


Chuck

Rick Perley wrote:
>     Things are improving...
> 
>     The most recent test, this afternoon, shows:
> 
>     IF1:  Good correlation on all antennas except 10, 13, 16, and 28.  
> Antennas 10 and 28 seem to be  broken.  Antennas 13 and 16 have no 
> receivers. 
> 
>     IF2:  A very interesting situation:  In LCP (IF'D'), all is as 
> reported for IF1.  But in RCP, the EVLA and VLA are incoherent with each 
> other:  VLA antennas fringe with VLA, EVLA with EVLA.  Looks like an 
> incorrect frequency is being used in one or the other.
> 
> 
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