[evlatests] Strange Phase Behavior for ea22

Leon Abeyta labeyta at nrao.edu
Thu Feb 27 14:59:16 EST 2020


I just had Jerry back off by 6 dB. Delays will need to be set. Hope this 
helps the problem.

Leon

On 2/27/2020 10:26 AM, Vivek Dhawan via evlatests wrote:
> Thanks Leon,
> 
> Today is a test, day if someone is available. Monday or Wednesday next
> week also would work.
> 
> On 2/27/20 9:13 AM, Leon Abeyta via evlatests wrote:
>> I noticed that the L305 in ea22 is being over-driven by a few dB. If 
>> anyone is interested, I can investigate fixing that on a maintenance day.
>>
>> Leon Abeyta
>>
>> On 2/26/2020 10:34 AM, Rick Perley via evlatests wrote:
>>>  Â Â Â  Beam cuts were taken last night, as part of our optics 
>>> alignment program.    Bands observed were from X through Q. 
>>> Stability was exceptional (as we might expect on a cold, clear, calm 
>>> night).
>>>
>>>  Â Â Â  All antennas behaved exceptionally well, except one.  ea22 
>>> has phase oscillations many times larger than they should be.
>>>
> 
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