[evlatests] System Checkout...

[Rick Perley]

    Prior to the 'flux densities' run later this week, I'm checking out 
my setups.  Some important items noted (very few!).  ea02 and ea20 were 
out of the array. 

    L-Band:

    No fringes from ea25 in LCP, and ea22 in IF 'A'.
    ea25 is giving zero PDif values on IF 'C' only. 
    ea28 gives very noisey PDif values in IF 'C' only. 

    S-Band:

    All antennas fringing, all PDifs working. 

    C-Band:

    ea01 gave no fringes on any IF (and zero PDif as well -- is the 
receiver out?) 
    All other antennas are fine. 

    X-Band:

    All antenna fringing, all PDif working. 

    Ku-Band:

    All antennas fringing, all PDifs working.

    K-Band:

    All antennas fringing.
    Zero PDif from ea25  (I think this is a long-standing problem). 

    Ka-Band:

    All antennas fringing.  All PDifs working. 

    Q-Band:

    All antennas fringing.
    Zero PDifs on ea22 and ea08.  (Actually, the PDifs from ea22 are 
strongly negative, and unchanging.  Clearly something rather amiss there 
...)