[evlatests] Phase jumps on EA14

Terry Cotter tcotter at nrao.edu
Mon Apr 29 18:18:16 EDT 2013


It is my understanding that the jumps did not occur at a scan boundary. 
If this is the case then a jumper cable will not work.

Terry

Vivek Dhawan wrote:
> I looked at this, Drew and Debra provided lists of affected & unaffected
> projects. It looks like ea14 B0D0 8-bit, and B1D1 3-bit are the ones
> affected. I could find only 1 example of 3-bit data affected in the last
> week.
> 
> The LO in common is ea14 L302-2, suggesting it needs a jumper cable add/
> remove operation there.
> 
> Deb Shepherd wrote:
>> Hi All,
>>
>> We are seeing phase jumps on EA14 and right now the pipeline is choosing
>> EA14 as a reference antenna so, when there is a phase jump, the pipeline
>> output is not usable.
>>
>> Is there anyway someone can go out to EA14 on Maintenance day tomorrow to
>> see if this can be fixed?
>>
>> Thanks,
>> Deb
>>
>>
>>
>>
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