[evlatests] a little progress

[Ken Sowinski]

Test time today was devoted to correlator work, but a few
things were learned or fixed.

The bandswitch in 13 now works, spurious signals were
cleaned up and a first go has been had at attenuator
settings for L and X bands.  Weak L band fringes were 
seen, but no attempt was made to set delays or levels.
The changes in pointing made from the data taken Tuesday 
were confirmed at X band.

The deformatter in 14A now talks and seems to work, but
problems seem to have migrated to 14D.  Rob and Jerry 
have spent a lot of time looking at this but I do not
yet know the outcome.

Script based control of the noise tubes was tested.  The
framework is in place for control of the transfer switch 
and the Ir filters, but awaits the hardware.