[evlatests] Test data from Tuesday
Rick Perley
rperley at nrao.edu
Wed Sep 2 18:08:30 EDT 2009
Good. An explanation is in sight.
For 25 RCP, note that this antenna both has the large and variable
standing wave at L-band, *and* has large changes in correlation (whose
presence at other bands is not known). . Linked, perhaps?
Michael Rupen wrote:
> Rick reported that the LCP data show 1 db changes in gain, suggesting
> that I didn't manage to freeze the attenuators in IF C. Alas, Ken
> confirms that I had a problem in my script. This affects all data taken this
> past couple of weeks. I will tweak future scripts to avoid this.
>
> Note that this does NOT explain the 1db gain changes for ea25 RCP (IF A),
> which remains a mystery.
>
> Michael
>
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