[evlatests] Results from T304 Attenuator and Requantizer Tests

[Michael Rupen]

Hi Rick --

   are you using both IF pairs (AC, BD) or just one?  and do the results
depend on the IF pair?

   The non-closing residuals could just correspond to those antennas
for which the attenuators were set improperly or inadequately (i.e.,
couldn't knock down the power enough to achieve linearity).  This can be
IF-dependent, hence my question.  Keith knows how all the attenuators
were set, as well as the resulting power levels, so we should be able
to check.

   For which test did you check the Stokes I residuals?  That is,
were the results given true for *all* tests, or just for #2, #4, or what?

   Your note gives the impression that these tests did improve (if
not eliminate) the closure problems.  Is that true?  Were specific
baselines "cured", and if so, which ones?  We could compare those with
Keith's information to see whether there's a correlation.

                    Michael