[evlatests] EVLA Hardware

[Rob Long]

The L302 with the latest software revision has been installed in Ant 13, 
L302-1 slot and appears to be working.

We spent the afternoon looking into the U/X converter cabling and the 
L302-2 performance on Ant 13 to try and understand why we can not fringe 
at K and Q bands, IFs B and D.  All cables were correct and 
bandshapes/power looked good at the output of the T304's using a 
spectrum analyzer.  We used several frequencies to determine any offset 
  in the test equipment and then verified that the L302-2 was locking 
properly every time.  We commanded up and down in large and small steps 
and the L302 appeared to lock properly every time.  Total power and 
switched power at the T5 seem to be reasonable for IFs B and D and if 
the L302 is off frequency, it would have to be a small value that I may 
have trouble resolving on the spec an.  After talking with Ken, I'm 
unsure of what to look at next. ??

Due to some other work and testing that I needed to finish on the fire 
alarm/shunt trip system, I did not get the L302-2 (from ant 13) 
installed into ant 18.  I have everything else ready to provide 4 IFs, 
so I will head out early in the morning to install the L302 into ant 18 
and bring up IFs B and D.  I hope to have this complete before 10:00.

Rob