[evlatests] Fwd: Fwd: Re: Generator test Antenna communication outages
Bryan Butler
bbutler at nrao.edu
Wed Mar 6 14:50:14 EST 2019
Ken's email also noted antenna 27 lost communication. Perhaps Jeff's
list isn't entirely inclusive?
-Bryan
Dave Parker wrote on 3/6/19 12:34:
>
> Hello all,
>
> Antennas dropping coms is not as bad as first suspected. The monitor
> points that were used for coms, by me were not good choices. It appears
> there are six constantly problem antennas them being 6, 8, 10, 14, 15
> and 17 according to Jeff Long's email. Jerry Langevin and myself did
> some work on Antenna 15 on 27 Feb, and Antenna 10 on 4 March, we plan on
> doing checks on Antennas 14 and 17 Monday 11 March and not touching
> Antennas 6 and 8 to give us an indication if what we are doing is making
> a major radiance.
>
> Jerry and myself removed a test power strip from Antennas 22 and 25 that
> was installed on 4 March sense these antennas have not been having problems.
>
> Dave Parker
>
> -------- Forwarded Message --------
> Subject: Fwd: Re: Generator test Antenna communication outages
> Date: Wed, 6 Mar 2019 07:23:18 -0700
> From: Dave Parker <dparker at nrao.edu>
> Organization: NRAO
> To: Jerry Langevin <jlangevi at nrao.edu>, Jim Jackson
> <jjackson at aoc.nrao.edu>
>
>
>
>
>
>
> -------- Forwarded Message --------
> Subject: Re: Generator test Antenna communication outages
> Date: Tue, 5 Mar 2019 16:55:10 -0700
> From: Jeff Long <jlong at nrao.edu>
> To: Dave Parker (dparker at aoc.nrao.edu) <dparker at aoc.nrao.edu>
> CC: Ken Sowinski <ksowinsk at aoc.nrao.edu>
>
>
>
> Interesting, the pdu did not lose power during both generator tests you
> can see a coldstart on the 4th when it was power cycled.
>
> --Jeff L.
>
> ea10-pdu logs
> 03/04/2019 09:37:20 System: Coldstart.
> 02/25/2019 11:49:20 System: Set Date or Time.
> 02/11/2019 11:49:19 System: Set Date or Time
>
> Date Time I IMax IMin
> 02/27/2019 09:26:49 1.5 1.5 1.5
> 02/27/2019 09:16:49 1.5 1.6 1.3
> 02/27/2019 09:06:49 1.5 1.5 1.5
>
>
>
>
> On 03/05/2019 03:23 PM, Jeff Long wrote:
>> *_Both Generator test days these Antennas were affected 6, 8, 10, 14,
>> 15, 17._*
>>
>> All switches below indicate from up time, that they power cycled
>> during loss of communication.
>>
>> Wed 13th Feb statseeker ping outage to these antennas started at
>> 9:42am back up at times below and how long ping was down
>> Note Wed 13th Feb 2019 09:44 EVLA-ant-sw-7 up 0 days 00
>> hrs 01 min
>> Note Wed 13th Feb 2019 09:44 EVLA-ant-sw-11 up 0 days 00
>> hrs 01 min
>> Note Wed 13th Feb 2019 09:44 EVLA-ant-sw-11b up 0 days 00
>> hrs 01 min
>> Note Wed 13th Feb 2019 09:44 EVLA-ant-sw-15b up 0 days 00
>> hrs 01 min
>> Note Wed 13th Feb 2019 09:44 EVLA-ant-sw-8b up 0 days 00
>> hrs 01 min
>> Note Wed 13th Feb 2019 09:44 EVLA-ant-sw-15 up 0 days 00
>> hrs 01 min
>> Note Wed 13th Feb 2019 09:44 EVLA-ant-sw-8 up 0 days 00
>> hrs 01 min
>> Note Wed 13th Feb 2019 09:44 EVLA-ant-sw-7b up 0 days 00
>> hrs 01 min
>> Note Wed 13th Feb 2019 09:45 EVLA-ant-sw-28 up 0 days 00
>> hrs 02 mins
>> Note Wed 13th Feb 2019 09:45 EVLA-ant-sw-28b up 0 days 00
>> hrs 02 mins
>> Note Wed 13th Feb 2019 09:45 EVLA-ant-sw-10b up 0 days 00
>> hrs 02 mins
>> Note Wed 13th Feb 2019 09:45 EVLA-ant-sw-10 up 0 days 00
>> hrs 02 mins
>> Note Wed 13th Feb 2019 09:45 EVLA-ant-sw-17b up 0 days 00
>> hrs 03 mins
>> Note Wed 13th Feb 2019 09:45 EVLA-ant-sw-17 up 0 days 00
>> hrs 03 mins
>> Note Wed 13th Feb 2019 09:46 EVLA-ant-sw-6 up 0 days 00
>> hrs 03 mins
>> Note Wed 13th Feb 2019 09:46 EVLA-ant-sw-6b up 0 days 00
>> hrs 03 mins
>> Note Wed 13th Feb 2019 09:49 EVLA-ant-sw-14 up 0 days 00
>> hrs 06 mins
>> Note Wed 13th Feb 2019 09:49 EVLA-ant-sw-14b up 0 days 00
>> hrs 06 mins
>>
>> Wed 27th Feb statseeker ping outage to these antennas started at
>> 9:13am back up at times below and how long ping was down
>> Note Wed 27th Feb 2019 09:16 EVLA-ant-sw-10b up 0 days 00
>> hrs 01 min
>> Note Wed 27th Feb 2019 09:16 EVLA-ant-sw-10 up 0 days 00
>> hrs 01 min
>> Note Wed 27th Feb 2019 09:16 EVLA-ant-sw-8b up 0 days 00
>> hrs 02 mins
>> Note Wed 27th Feb 2019 09:16 EVLA-ant-sw-8 up 0 days 00
>> hrs 02 mins
>> Note Wed 27th Feb 2019 09:16 EVLA-ant-sw-15b up 0 days 00
>> hrs 02 mins
>> Note Wed 27th Feb 2019 09:16 EVLA-ant-sw-15 up 0 days 00
>> hrs 02 mins
>> Note Wed 27th Feb 2019 09:17 EVLA-ant-sw-27b up 0 days 00
>> hrs 03 mins
>> Note Wed 27th Feb 2019 09:17 EVLA-ant-sw-27 up 0 days 00
>> hrs 03 mins
>> Note Wed 27th Feb 2019 09:17 EVLA-ant-sw-6b up 0 days 00
>> hrs 03 mins
>> Note Wed 27th Feb 2019 09:17 EVLA-ant-sw-17b up 0 days 00
>> hrs 03 mins
>> Note Wed 27th Feb 2019 09:17 EVLA-ant-sw-17 up 0 days 00
>> hrs 03 mins
>> Note Wed 27th Feb 2019 09:17 EVLA-ant-sw-6 up 0 days 00
>> hrs 04 mins
>> Note Wed 27th Feb 2019 09:20 EVLA-ant-sw-14 up 0 days 00
>> hrs 07 mins
>> Note Wed 27th Feb 2019 09:20 EVLA-ant-sw-14b up 0 days 00
>> hrs 07 mins
>>
>> --Jeff L.
>>
>> On 03/05/2019 12:47 PM, Dave Parker wrote:
>>> Jeff,
>>>
>>> The antennas you noted losing coms this morning (with location) were
>>> 14 at BE7, 17 at BN9, 6 at BN7, 8 at BN5, 26 at BW9, 27 at BE8, 10 at
>>> BE2, and 15 at BN3. I do not think antenna 28, now BW2, was affected
>>> this outage but was the week before when on the master pad. You might
>>> recheck antennas 11 BN8, 9 BN4, 18 BW8, and 12 BE4.
>>>
>>> Work was done on antenna 15 on the 27th of FEB. Antennas 10, 22, and
>>> 25 had the network switches bypassed from the PDU's on 4 March so
>>> they may want to be rechecked also.
>>>
>>> Below are comments from Ken Sowinski regarding coms failures on the
>>> last 2 generator test. On, I believe the 13 and 27th of Feb.
>>>
>>> Dave
>>>
>>>
>>> -------- Forwarded Message --------
>>> Subject: Re: [evlatests] generator testing side-effects
>>> Date: Mon, 4 Mar 2019 13:54:19 -0700 (MST)
>>> From: Ken Sowinski <ksowinsk at nrao.edu>
>>> To: Ken Sowinski <ksowinsk at nrao.edu>
>>> CC: evlatests at nrao.edu
>>>
>>> On Tue, 19 Feb 2019, Ken Sowinski wrote:
>>>
>>>> During the generator testing last Wednesday I recorded 48V powerplant
>>>> voltage and current from the M302, and sampler temperatures for all
>>>> four modules at the antennas chosed to be distributed over all three
>>>> arms and the master pad. The antennas used were:
>>>> West arm: ea01, ea02, ea28 (master pad)
>>>> North arm: ea04, ea06, ea11, ea15
>>>> East arm: ea10, ea16, ea23
>>>>
>>>> This is the first of two notes and describes the overall antenna and
>>>> power plant response. The second will describe the sampler behavior.
>>>>
>>>> An unexpected result is that about half the antennas suffered a
>>>> communication outage when AC power was removed from the antenna.
>>>> At least one antenna on the East arm had communications restored
>>>> before AC power was restored. The antennas which experienced
>>>> a communication outage are:
>>>>
>>>> ea28, ea06, ea11, ea15, ea10,
>>>
>>> During the generator tests of last Wednesday, Feb 27, I monitored
>>> the east arm antennas with the following results.
>>>
>>> Network unaffected: ea05, ea06, ea16, ea21, ea23
>>> Network lost: ea10, ea14, ea27
>>>
>>> The three antennas that were monitored both a week ago and this
>>> time behaved the same way on both days.
>>>
>>> ea06 returned power plant voltage as exepcted, but always zero for
>>> current.
>>>
>>> ea12 is on the east arm but I neglected to notice that.
>>>
>>>
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>
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