[evlatests] wrap of EVLA antennas

[Barry Clark]

This is a well-known feature - the Modcomps know where the antennas are
and react accordingly.  The Executor does not.  It assumes the antennas
are where last commanded.  But there is no memory of commands from one
script to the next.

One of many extensions needed to be made to the code.

> From evlatests-bounces at donar.cv.nrao.edu  Wed Feb 21 11:09:39 2007
> X-Authentication-Warning: habanero.aoc.nrao.edu: cchandle owned process doing
> 	-bs
> Date: Wed, 21 Feb 2007 11:09:03 -0700 (MST)
> From: Claire Chandler <cchandle at nrao.edu>
> 
> The observing log for K-band observations from the last couple of days 
> (AD556) indicate that the VLA and EVLA antennas started out in a different 
> wraps, and that the EVLA antennas had to unwind before our observations 
> began, getting on source late.
> 
> This is significant because the program before ours (AB1232, another one 
> of mine) specified the wrap to be used at the beginning, and I see no 
> evidence that the antennas were on a different wrap by the end of that 
> program.
> 
> AD556 did not specify a wrap at the beginning, because I thought I knew 
> where the antennas were going to be from the end of AB1232.  This means 
> that at the beginning of AD556 a different algorithm was being used to 
> determine which wrap should be used for the VLA and EVLA antennas, and 
> they came out with different answers.
> 
> Claire
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