[evlatests] Something wrong with RQ gains ...

[Rick Perley]

     When I get a free moment, I'll check the attenuator gains, to see 
if something amiss was happening.  I can also check against the CALIB 
gains.


On 01/22/2015 03:05 PM, Ken Sowinski wrote:
> On Fri, 16 Jan 2015, Rick Perley wrote:
>
>>     Something is amiss with the RQ gains.
>>
>>    In the past, application of these gains (in AIPS, using 'TYAPL') 
>> perfectly restored the observed visibility amplitudes to constant 
>> values.
>>
>>    Now, using exactly the same programs, the visibility amplitudes 
>> are only partially restored.  Eric and I have confirmed that TYAPL is 
>> doing the same as it did in the past. So something seems to be wrong 
>> with the recorded values.
>
> Stuff like this could happen if set and remember never remembered
> and every scan at the band in question caused the T304 attenuators
> to re-servo to the right place.
>
> This would be the result if the script started late, or was restarted 
> after having begun.  Is there any evidence of this in the archive?
>
> Much less likely is the possibility that the o_period parameter for
> the T304 power measurements was changed to something longer than
> ten seconds.