[evlatests] Sudden Delay Change

[Eric Chavez]

There was a disruption on the LO, in the fiber patch panel. The required 
syncing and reseting of the DTS modules.

Eric

Ken Sowinski wrote:
> On Wed, 23 May 2012, Rick Perley wrote:
> 
>>    A holography test was run this morning, at 6cm.  Data in general
>> look very good.  But ... ea02 had a large and sudden delay change, on
>> all four IFs, of nearly 100 nsec (the change was different in each IF).
>> The time for this was between 13:15:21 and 13:18:55, IAT.  The
>> amplitudes appear to have remained the same.  The new, large, delays
>> were not stable on the RCP side, with both A and B showing two different
>> values, appearing on individual scans.
> 
> Even yesterday ea02 was still a bit unstable after its move.
> There is some folklore that suggests that unstable delays
> last for a day or two in some cases after an antenna is moved
> or seriously perturbed.
> 
> _______________________________________________
> evlatests mailing list
> evlatests at listmgr.cv.nrao.edu
> http://listmgr.cv.nrao.edu/mailman/listinfo/evlatests