[evlatests] this morning's stress test

[Emmanuel Momjian]

A summary of this morning's stress test:

P-band: very weak fringes on antennas 3 and 21, and no fringes on 
antennas 1, 4, 5, 15, 16.

L-band: All look good.

C-band: Antenna 3 is in very bad shape, its effective Tsys, depending on 
the IF, is at least 1500 K and as high as 3000 K.
        Antenna 4 is ok during the ~1 minute C-band scan of the stress test.
        Antenna 18 is ok.

X-band: no fringes on antenna 3, antenna 4 is ok (in a ~1 minute Xband 
scan).

K-band: no fringes on antenna 3, antenna 4 is ok (in a ~1 minute K-band 
scan).
        Antenna 2, IF B only is less sensitive by a factor of 2.
        Antenna 5 is less sensitive by a factor of 2 in all its IFs.

Q-band: no fringes on antennas 3, antenna 4 is ok (in a ~1 minute Q-band 
scan).

Emmanuel

Rick Perley wrote:
>     I ran tests yesterday noon, at all bands.  A quick summary of 
> performance, by band.  Antenna 25 was out of the array.  All others were 
> pointing. 
>
>     1)  P-Band.  No fringes from 1, 3, 4, 5, 15, 16, or 21. 
>
>     2) L-Band.  All antennas o.k. 
>
>     3)  C-Band.  3 gives weak fringes.  18 gives only noise.  4 is 
> erratic -- good some times, no fringes other times. 
>
>     4) X-Band.  3 weak, 4 and 18 are erratic.  5 is erratic on IFs B and 
> D. 
>
>     5) K-Band.  3 weak, 4 erratic (good fringes some sources, no fringes 
> on others). 
>
>     6) Q-Band.  3 and 4 both weak (or no fringes -- hard to tell at this 
> frequency with the sources I had). 
>
>     A stress test was run this morning -- Emmanuel should be able to 
> report on its results shortly.
>
>
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