[evlatests] P band delays
Rick Perley
rperley at nrao.edu
Tue Oct 30 21:27:43 EDT 2007
I checked the P-band delays, as requested by Ken. The news is
uniformly very good:
1) Antennas 11, 13, 16, and 19 are not implemented or not functioning.
2) All remaining antennas are working very nicely at P-band.
3) Sensitivities on EVLA antennas at P-band are now *very much
better* -- and are now equivalent to normal VLA antennas!
4) Antennas with notable sensitivity issues are:
21 (all IFs), 15 A and 15 B (RCP), and 6D.
5) Delays are good on all antennas, except the following (determined
w.r.t. antenna 9) (threshold is 20 nsec):
7C: -40 nsec
20D: -40 nsec
22B: +40 nsec
24A: -150 nsec
24B -50 nsec
26D: +50 nsec
A '+' delays means that the listed delay must be added to
the current value.
6) The only bandpass with an abnormal shape is 27B.
Ken Sowinski wrote:
> Rick,
>
> A few minutes of P band data was taken in line mode to
> try to estimate delays. If you can find someone to look
> at it,
>
> Program name: PDELAY
> Time: 2300 to 2304 IAT
>
>
> Ken
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