[evlatests] Troubles with ea05 at X-band

[Rick Perley]

    A holography run was done yesterday evening.  In general, the data 
look very good. 

    But, ea05 gave no visibility data from IF 'D' -- there are only 
blanks, presumably because the visibilities were all pure zeros, so were 
purged upon filling. 

    Also:  the PDif values are <1/20 of the proper level, and are 
probably just noise -- no detected signal, on any IF.  (And we have no 
switched power data at all from IF 'D').