[evlatests] Some low-band issues

[Rick Perley]

    Fine with me.  But I do hope that, if something is found, which can 
be trivially repaired (such as, reversing a pair of cables), it can be 
repaired by somebody in the field?  This simple action wouldn't seem to 
be wasteful to me ...

    Rick

Deb Shepherd wrote:
> Hi All, 
>
> A note of caution here:
>
> We have agreed in the low-band telecons that Frazer runs that the 
> current low-band priority to focus on receiver build and installation 
> is reasonable.    This means that we should not put effort into fixing 
> anything wrong with P-band receivers right now.   Just collect the 
> problems and deal with them after we have finished the installation.   
>
> So right now, although it is useful to know what receivers have 
> problems and what those problems may be, we are not going to spend 
> effort fixing those problems right now because it takes away too much 
> effort from actually building receivers.   
>
> The only scenario in which this would change is if Frazer decided that 
> it is best to change those priorities.    That said, what Rick is 
> doing is valuable and will be needed in the near future.   
>
> Cheers,
> Deb
>
>
> On Thu, Mar 7, 2013 at 3:51 PM, Ken Sowinski <ksowinsk at nrao.edu 
> <mailto:ksowinsk at nrao.edu>> wrote:
>
>     On Thu, 7 Mar 2013, Rick Perley wrote:
>
>     >    Paul:
>     >
>     >    Thanks for the reply.
>     >
>     >    So, it seems that  ea01 and ea03 should show fringes, but don't.
>     > (In fact, ea01 was fringing, but the SNR was so low I had to
>     leave it
>     > out when making a bandpass calibration).
>
>     These two have their ploarizations swapped.  Is it feasible for
>     Paul to consult with Jerry L about how to remedy this?
>
>     >    Perhaps Ken or Barry can update the parameters database with
>     the Cal
>     > values.
>
>     >    As for the F14s -- we'll try find out how to make sure these
>     are on,
>     > when needed.
>
>     I claim that these are turned on by the executor at every scan unless
>     the script explcitly requires them to be off.  model2script does not
>     generate scripts which does that, so they should all be on.  If not,
>     it must be an F320 or F14 problem.  There is more than one way to
>     command the F320 to turn on the cals; perhaps one is more equal than
>     the others.
>
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>
>
>
> -- 
> Debra Shepherd <dshepher at nrao.edu <mailto:dshepher at nrao.edu>>
> National Radio Astronomy Observatory   
> 1003 Lopezville Rd
> Socorro, New Mexico 87801
> http://www.aoc.nrao.edu/~dshepher <http://www.aoc.nrao.edu/%7Edshepher>
>