[evlatests] T304 attenuator changes

Rob Long rlong at nrao.edu
Mon Jun 22 15:44:38 EDT 2009


Hi folks,

I read about the attenuator settings problem you appear to be having 
while I was on vacation.  Has anyone noticed if the T304 attenuator 
values are actually changing after each scan?  If I have an exact time 
period, I can go into the archives and tell what the attenuator settings 
are doing during this file.

Rob

Ken Sowinski wrote:
> On Fri, 19 Jun 2009, Michael Rupen wrote:
> 
>> As Ken says, each of the scans in a given band was taken at the same
>> frequency; I would hope that means, with the same LO settings, but the
>> Executor folks would have to confirm that.
> 
> Yes, same LO setting, but newly tuned there for each scan.
> The T304 input attenuator settings may be different at each
> scan.
> 
> Ken
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