[evlatests] first results for ea07
Rob Long
rlong at nrao.edu
Tue Aug 18 20:49:18 EDT 2009
I have a hunch that the A and C cables are swapped on the transfer
switch in the LO rack. I will make sure this gets checked tomorrow as
well as verifying that available receivers are working. We had a long
day trying to get the deformatters happy, so Doug and I didn't make it
to antenna 7 until 4:30. Hopefully, I will get to look carefully at the
rest of ant 7 in the morning.
Rob
Ken Sowinski wrote:
> Fringes were obtained only at C band.
> But, polarizations were swapped for AC; not for BD.
>
> At X band there is no hint of correlated signal. I doubt
> that that can be attributed to poor pointing or delays.
> Rob told me that there was no switched power at X band
> but that it worked in other respects. That does not seem
> to be the case.
>
> No power in the downconverter for K or Q bands. Rob tells
> me that the necessary wiring will be installed tomorrow.
>
>
> Test time starts after lunch on Wednesday. I will be happy
> to look at it again whenever it is ready.
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