[evlatests] ea21 ACU progress

Keith Morris kmorris at nrao.edu
Wed Aug 28 22:44:17 EDT 2013


When you say "no power getting out", do you mean there was signal at the
T304 output detectors, but no signal at the digitizer?


> I report for  Greg and Hichem who have been doing the work.
>
> We ssuccessfully controlled ea21 using the new ACU today.
> Fringes were seen at L band andX band.  Preliminary collimations
> at S band were set.  More tuning is planed for tomorrow morning
> followed by a short bouot of S band pointing to distinguish
> collimation and zero offset errors.  More tests will await
> signoff from the engineeers and more successful simple operation.
>
> Note that the L band receiver is not working.  There seems to
> be adequate power getting the the T304s, but no power getting
> out.  It is hard to blame the L302s because S and X bands work.
> Any ideas?
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