[evlatests] Ant 04
Ken Sowinski
ksowinsk at nrao.edu
Sat Feb 9 18:17:57 EST 2008
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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>>
>>
>>
> 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.
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