[evlatests] Ant 04

Michael LeBlanc mleblanc at nrao.edu
Mon Feb 11 10:04:33 EST 2008


Ken Sowinski wrote:
> On Fri, 8 Feb 2008, Michael LeBlanc wrote:
>
>> Rob Long wrote:
>>> Antenna 4 has three receivers installed (X, L, and Q bands) and all 
>>> electronics needed to use them.  There were problems in the 
>>> M302/M303 wiring and fire alarm system over the last couple of days 
>>> that caused power to cycle up and down numerous times.  All modules 
>>> were up and working properly, but after the power cycles we lost 
>>> communication with the F320 and the M301.
>>>
>>> I looked into these yesterday and found that both modules are not 
>>> loading slot ID properly.  The M301 will be fixed today and when 
>>> Wayne or Cody return from illness, we will talk with them about the 
>>> F320 problem.  Worst case, we can open the F320 and figure out what 
>>> the MIB number is so that we can turn on the cal signal for first 
>>> fringes.
>>>
>>> The ACU is talking in the antenna which turned out to be a faulty 
>>> slot ID card.  The servo group is finishing up some work today and 
>>> Doug says that they plan on running servo tests at the beginning of 
>>> next week.
>>>
>>> Rob
>>>
>>> _______________________________________________
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>>> evlatests at listmgr.cv.nrao.edu
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>>>
>>>
>>>
>> To all (FYI),
>>
>> The M301 is up and functional.  The issues was a missed wired (all 
>> wires) SlotID DB-9 connector of the module harness.
>
> I exuberantly took this to measn that the antenna rather than
> M301 was funtional.  I can report that there are still a few
> problems, most likely know to all already.
>
> 1.  There are FRM power problems.
> 2.  No cals at X band, but apparantly at L and Q.
> 3.  IF B DTS is not working right.
>
> If we are anxious for first fringes, 1. should be fixed first
> and the ACU declared operational.  We can do without cals.
> The IF B DTS probably just needs to be reset.
>
>
>
Just so there is no confusion, I did mean M301 only.  My update was to 
add to Rob's email that the M301 would be fixed and it is functional.  
The T301 will be added today if we can get on the antenna.
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