[evlatests] Testing faster setup times (attenuators and requantizers)

Rick Perley rperley at nrao.edu
Tue Nov 26 16:59:23 EST 2013


    Well, I for one will happily accept the results of Ken's testing, 
which fully support what I found.   It seems to me that the 20 second 
duration suggested by Ken should work for all. 

Vivek Dhawan wrote:
> Actually, in Ken's pre-Rick tests, (where I think he uses X+K) we
> found no examples of bad behavior
>
> Subsequent tests will certainly include X+K, our standard setup,
> with the new function.
>
> On Tue, November 26, 2013 14:51, Bryan Butler wrote:
> |
> | indeed - i just wish rick had used that combination of bands in his test.
> |
> |
> | Ken Sowinski wrote, On 11/26/13 14:49 :
> |> On Tue, 26 Nov 2013, Bryan Butler wrote:
> |>
> |>>>      From this test, the 60 seconds initial setup is just sufficient.
> |>>> The 20 second requantizer change is generous, but only because of the
> |>>> chosen bands in my test.
> |>>
> |>> it would be good to do a test switching between, say, K-band and X-band,
> |>> to have a longer subreflector slew.
> |>
> |> That was the combination I used in my testing.  Twenty seconds is
> |> adequate in that case as well.  It was chosen to allow the maximum
> |> possible subreflector rotation of 180 degrees which, nominally,
> |> takes about 12 seconds.
> |>
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