[evlatests] [Fwd: Broken/Malfunctioning Switched Power -- A summary]
Rick Perley
rperley at nrao.edu
Thu Feb 9 11:08:05 EST 2012
An important typo was in my report. I've corrected the offending
paragraph, below ...
1) Global problem: ea17 in LCP was providing extremely noisy data.
The PDif values vary over a ratio of nearly 2:1 at all bands, and in
both IFs C and D. The same variations are seen in PSum, but they are
^^^
proportionally much smaller -- so the derived Tsys also varies by nearly
a factor of two. The character of the variations is pure noise -- there
is no trend on any timescale.
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