[evlatests] R/L phase differences.

[Rick Perley]

Bob informs me the baseline was 28 x 15 -- fairly short. 

I've recovered the original data, and ran CALIB on it, with 1.6 second 
averaging.  The attached plot shows the R-L phase differences in the 
solutions, with antenna 28 as reference.  I show only the first couple 
minutes of data -- one sees phase differentials of a few degrees, 
entirely consistent with 'phase clunking' accompanying the delay steps. 

Barry Clark wrote:
> Bob's plot is not incompatible with delay cogging.  Delay moves
> in steps of 0.625 ns or about 6 degrees.  What was the baseline
> and hour angle?  Typical B config gaselines are of order 20
> microsecs, so a delay step should occur a couple of times a
> second, depending on baseline and HA.  This scatter is much
> smaller than what the scatter diagram on V appeared to show.
> _______________________________________________
> evlatests mailing list
> evlatests at listmgr.cv.nrao.edu
> http://listmgr.cv.nrao.edu/mailman/listinfo/evlatests
>   
-------------- next part --------------
A non-text attachment was scrubbed...
Name: PHSDIF
Type: application/postscript
Size: 112282 bytes
Desc: not available
URL: <http://listmgr.nrao.edu/pipermail/evlatests/attachments/20090423/eab77d80/attachment.ai>