[evlatests] Testing ea18

[Eric Chavez]

Antenna 18 Update:

All IFs now work.

Kerry installed a deformatter on IF-B.

Found a Swapped pair of cables on IF-A down converter. Repaired.

Found L-band and S-band receiver cables swapped on the feed through 
panel on the LO Rack. Repaired

Ran scripts on all receivers and band pass plots look much better.

Eric Chavez


Ken Sowinski wrote:
> On Thu, 2 Jun 2011, Steven Durand wrote:
> 
>> Only IfC and ifD were tested.  Kerry says he will get A & B to
>> work tomorrow  morning
>>
>> X, L, K, Q, Ka, S, Ku, all seem to be working with good band
>> pass shapes.
>>
>> C Band is oscillating and dose Not work well enough to test.
>> FE will look at it.
> 
> I had a quick look today to see what works.  As Steve reports
> IF A is dead because only zeros are coming out at the dformatter,
> IF B is dead because there is no deformatter.
> 
> That leaves C and D to examine.
> X band is fine
> C band seems dead -- no or little power at the downcovnerters.
> L band works only in IF C.
> 
> None of the other bands were tried yet.  More another day.
> 
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