[evlatests] Alerts for T304 TPD levels

[Keith Morris]

There is certainly the possibility of false alarm, but the cost of such 
an alarm is quite low.  The TPD monitor point message field reports the 
ALC status-- target reached, attenuator out of range, etc.  The alert 
would inform the operator that such a situation exists; there may or may 
not be any action the operator can take.  But in the cases where the 
attenuators failed to set up properly, the benefit of having a second 
chance of dialing in proper levels may outweigh the inconvenience of 
false alarms.



Steven Durand wrote:
> Is there the possibility of many false alarms.  The x-band 
> receivers still have very low output.  Also at the edges of each 
> band some of the receivers have low output that can not be 
> adjusted to the proper level.
> 
> 
> 
> Rob Long wrote:
>> I discovered several T304 attenuators set incorrectly (again) this 
>> morning. I wonder if we should setup alert levels on the TPD monitor 
>> points in order to warn operators of a potential ALC problem. If the 
>> operators knew of the problem, they might have been able to take 
>> corrective action.
>>
>> I spoke with Dave who informed me that they didn't even realize the 
>> attenuators were set incorrectly because they saw no fringe problems. 
>> This email is effectively a channel to open communication concerning 
>> ideas/solutions to this problem!
>>
>> Thanks,
>> Rob Long
>>
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> 

-- 
Keith Morris
National Radio Astronomy Observatory
1003 Lopezville Rd.
Socorro, NM 87801
575-835-7060 (phone)
575-835-7027 (fax)