[evlatests] ea20 switched power wrong at X-band
Wes Grammer
wgrammer at nrao.edu
Mon Jun 17 16:40:47 EDT 2013
Rick, I checked the data files on \\filehost, and the Tcal column
appears to be in the correct range, so I don't understand how the Tcals
got scaled. However, I did notice in the column heading of the file,
there is a space between '1st' and 'LO'. If the text file was imported
using software, and is using spaces as delimiters, perhaps the parser
got confused and associated the next column over as the Tcals. This
column contains Tcals scaled by a factor of 10, which matches what you
are seeing.
I noticed a number of the other Tcal files appear to use commas as
delimters - not sure why X-band s/n 004 is different.
John, thanks for checking this out, and running down the cause.
Rick Perley wrote:
> John McClendon has found (from stress test results) an oddity with
> ea20 at X-band.
>
> It turns out all is explained by a (very) bad Tcal value. The
> database lists this antenna has having a Tcal of about 22K (!!!). In
> fact, it should be near 2.2K. A slipped digit, likely.
>
> Can somebody correct the database for this?
>
>
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