[evlatests] Standing Wave in IF 'A'

[Jim Jackson]

In that case, this requires an upper management decision. Is this 
problem bad enough to warrant removing the 3-bit equipped DTS module 
from EA22 and delaying the 3-bit testing or can we live with it this 
way for a while?

Jim

At 01:21 PM 4/19/2011, Eric Chavez wrote:
>I just came from ant 22 and swapped the entire signal path between D301
>and D302. We wiggled cables connectors etc and the problem was always in
>IF-A. I talked to Kerry Shores while doing this test and I am convinced
>that the problem is between the input to the D301 and the correlator. No
>matter what I tried in the LO/IF path, the ripple always stayed the same
>in IF-A.
>
>Rob Long
>
>Rick Perley wrote:
> >     Bandpass solutions at L, S, and X bands show a 32 MHz-period
> > periodicity, of amplitude 1.5 dB, in IF 'A' only.  Presumably, a bad
> > match in the T304?
> >
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