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<div class="moz-forward-container">Hello all,</div>
<div class="moz-forward-container"><br>
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<div class="moz-forward-container">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.</div>
<div class="moz-forward-container"><br>
</div>
<div class="moz-forward-container">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.</div>
<div class="moz-forward-container"><br>
</div>
<div class="moz-forward-container">Dave Parker</div>
<div class="moz-forward-container"> <br>
-------- Forwarded Message --------
<table class="moz-email-headers-table" cellspacing="0"
cellpadding="0" border="0">
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<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Subject:
</th>
<td>Fwd: Re: Generator test Antenna communication outages</td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Date: </th>
<td>Wed, 6 Mar 2019 07:23:18 -0700</td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">From: </th>
<td>Dave Parker <a class="moz-txt-link-rfc2396E" href="mailto:dparker@nrao.edu"><dparker@nrao.edu></a></td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Organization:
</th>
<td>NRAO</td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">To: </th>
<td>Jerry Langevin <a class="moz-txt-link-rfc2396E" href="mailto:jlangevi@nrao.edu"><jlangevi@nrao.edu></a>, Jim Jackson
<a class="moz-txt-link-rfc2396E" href="mailto:jjackson@aoc.nrao.edu"><jjackson@aoc.nrao.edu></a></td>
</tr>
</tbody>
</table>
<br>
<br>
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charset=windows-1252">
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<br>
-------- Forwarded Message --------
<table class="moz-email-headers-table" cellspacing="0"
cellpadding="0" border="0">
<tbody>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Subject:
</th>
<td>Re: Generator test Antenna communication outages</td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Date:
</th>
<td>Tue, 5 Mar 2019 16:55:10 -0700</td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">From:
</th>
<td>Jeff Long <a class="moz-txt-link-rfc2396E"
href="mailto:jlong@nrao.edu" moz-do-not-send="true"><jlong@nrao.edu></a></td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">To: </th>
<td>Dave Parker (<a class="moz-txt-link-abbreviated"
href="mailto:dparker@aoc.nrao.edu"
moz-do-not-send="true">dparker@aoc.nrao.edu</a>) <a
class="moz-txt-link-rfc2396E"
href="mailto:dparker@aoc.nrao.edu"
moz-do-not-send="true"><dparker@aoc.nrao.edu></a></td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">CC: </th>
<td>Ken Sowinski <a class="moz-txt-link-rfc2396E"
href="mailto:ksowinsk@aoc.nrao.edu"
moz-do-not-send="true"><ksowinsk@aoc.nrao.edu></a></td>
</tr>
</tbody>
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<br>
<br>
Interesting, the pdu did not lose power during both generator
tests you can see a coldstart on the 4th when it was power
cycled.<br>
<br>
--Jeff L.<br>
<br>
ea10-pdu logs<br>
03/04/2019 09:37:20 System: Coldstart.<br>
02/25/2019 11:49:20 System: Set Date or Time.<br>
02/11/2019 11:49:19 System: Set Date or Time<br>
<br>
Date Time I IMax IMin<br>
02/27/2019 09:26:49 1.5 1.5 1.5<br>
02/27/2019 09:16:49 1.5 1.6 1.3<br>
02/27/2019 09:06:49 1.5 1.5 1.5<br>
<br>
<br>
<br>
<br>
On 03/05/2019 03:23 PM, Jeff Long wrote:<br>
<blockquote type="cite"><b><u>Both Generator test days these
Antennas were affected 6, 8, 10, 14, 15, 17.</u></b><br>
<br>
All switches below indicate from up time, that they power
cycled during loss of communication.<br>
<br>
Wed 13th Feb statseeker ping outage to these antennas started
at 9:42am back up at times below and how long ping was down<br>
Note Wed 13th Feb 2019 09:44 EVLA-ant-sw-7 up
0 days 00 hrs 01 min<br>
Note Wed 13th Feb 2019 09:44 EVLA-ant-sw-11 up
0 days 00 hrs 01 min<br>
Note Wed 13th Feb 2019 09:44 EVLA-ant-sw-11b
up 0 days 00 hrs 01 min<br>
Note Wed 13th Feb 2019 09:44 EVLA-ant-sw-15b
up 0 days 00 hrs 01 min<br>
Note Wed 13th Feb 2019 09:44 EVLA-ant-sw-8b up
0 days 00 hrs 01 min<br>
Note Wed 13th Feb 2019 09:44 EVLA-ant-sw-15 up
0 days 00 hrs 01 min<br>
Note Wed 13th Feb 2019 09:44 EVLA-ant-sw-8 up
0 days 00 hrs 01 min<br>
Note Wed 13th Feb 2019 09:44 EVLA-ant-sw-7b up
0 days 00 hrs 01 min<br>
Note Wed 13th Feb 2019 09:45 EVLA-ant-sw-28 up
0 days 00 hrs 02 mins<br>
Note Wed 13th Feb 2019 09:45 EVLA-ant-sw-28b
up 0 days 00 hrs 02 mins<br>
Note Wed 13th Feb 2019 09:45 EVLA-ant-sw-10b
up 0 days 00 hrs 02 mins<br>
Note Wed 13th Feb 2019 09:45 EVLA-ant-sw-10 up
0 days 00 hrs 02 mins<br>
Note Wed 13th Feb 2019 09:45 EVLA-ant-sw-17b
up 0 days 00 hrs 03 mins<br>
Note Wed 13th Feb 2019 09:45 EVLA-ant-sw-17 up
0 days 00 hrs 03 mins<br>
Note Wed 13th Feb 2019 09:46 EVLA-ant-sw-6 up
0 days 00 hrs 03 mins<br>
Note Wed 13th Feb 2019 09:46 EVLA-ant-sw-6b up
0 days 00 hrs 03 mins<br>
Note Wed 13th Feb 2019 09:49 EVLA-ant-sw-14 up
0 days 00 hrs 06 mins<br>
Note Wed 13th Feb 2019 09:49 EVLA-ant-sw-14b
up 0 days 00 hrs 06 mins<br>
<br>
Wed 27th Feb statseeker ping outage to these antennas started
at 9:13am back up at times below and how long ping was down<br>
Note Wed 27th Feb 2019 09:16 EVLA-ant-sw-10b
up 0 days 00 hrs 01 min<br>
Note Wed 27th Feb 2019 09:16 EVLA-ant-sw-10 up
0 days 00 hrs 01 min<br>
Note Wed 27th Feb 2019 09:16 EVLA-ant-sw-8b up
0 days 00 hrs 02 mins<br>
Note Wed 27th Feb 2019 09:16 EVLA-ant-sw-8 up
0 days 00 hrs 02 mins<br>
Note Wed 27th Feb 2019 09:16 EVLA-ant-sw-15b
up 0 days 00 hrs 02 mins<br>
Note Wed 27th Feb 2019 09:16 EVLA-ant-sw-15 up
0 days 00 hrs 02 mins<br>
Note Wed 27th Feb 2019 09:17 EVLA-ant-sw-27b
up 0 days 00 hrs 03 mins<br>
Note Wed 27th Feb 2019 09:17 EVLA-ant-sw-27 up
0 days 00 hrs 03 mins<br>
Note Wed 27th Feb 2019 09:17 EVLA-ant-sw-6b up
0 days 00 hrs 03 mins<br>
Note Wed 27th Feb 2019 09:17 EVLA-ant-sw-17b
up 0 days 00 hrs 03 mins<br>
Note Wed 27th Feb 2019 09:17 EVLA-ant-sw-17 up
0 days 00 hrs 03 mins<br>
Note Wed 27th Feb 2019 09:17 EVLA-ant-sw-6 up
0 days 00 hrs 04 mins<br>
Note Wed 27th Feb 2019 09:20 EVLA-ant-sw-14 up
0 days 00 hrs 07 mins<br>
Note Wed 27th Feb 2019 09:20 EVLA-ant-sw-14b
up 0 days 00 hrs 07 mins<br>
<br>
--Jeff L.<br>
<br>
On 03/05/2019 12:47 PM, Dave Parker wrote:<br>
<blockquote type="cite">Jeff,<br>
<br>
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.<br>
<br>
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.<br>
<br>
Below are comments from Ken Sowinski regarding coms failures
on the last 2 generator test. On, I believe the 13 and 27th
of Feb.<br>
<br>
Dave<br>
<br>
<br>
-------- Forwarded Message --------<br>
Subject: Re: [evlatests] generator testing side-effects<br>
Date: Mon, 4 Mar 2019 13:54:19 -0700 (MST)<br>
From: Ken Sowinski <a class="moz-txt-link-rfc2396E"
href="mailto:ksowinsk@nrao.edu" moz-do-not-send="true"><ksowinsk@nrao.edu></a><br>
To: Ken Sowinski <a class="moz-txt-link-rfc2396E"
href="mailto:ksowinsk@nrao.edu" moz-do-not-send="true"><ksowinsk@nrao.edu></a><br>
CC: <a class="moz-txt-link-abbreviated"
href="mailto:evlatests@nrao.edu" moz-do-not-send="true">evlatests@nrao.edu</a><br>
<br>
On Tue, 19 Feb 2019, Ken Sowinski wrote:<br>
<br>
<blockquote type="cite">During the generator testing last
Wednesday I recorded 48V powerplant<br>
voltage and current from the M302, and sampler
temperatures for all<br>
four modules at the antennas chosed to be distributed over
all three<br>
arms and the master pad. The antennas used were:<br>
West arm: ea01, ea02, ea28 (master pad)<br>
North arm: ea04, ea06, ea11, ea15<br>
East arm: ea10, ea16, ea23<br>
<br>
This is the first of two notes and describes the overall
antenna and<br>
power plant response. The second will describe the
sampler behavior.<br>
<br>
An unexpected result is that about half the antennas
suffered a<br>
communication outage when AC power was removed from the
antenna.<br>
At least one antenna on the East arm had communications
restored<br>
before AC power was restored. The antennas which
experienced<br>
a communication outage are:<br>
<br>
ea28, ea06, ea11, ea15, ea10,<br>
</blockquote>
<br>
During the generator tests of last Wednesday, Feb 27, I
monitored<br>
the east arm antennas with the following results.<br>
<br>
Network unaffected: ea05, ea06, ea16, ea21, ea23<br>
Network lost: ea10, ea14, ea27<br>
<br>
The three antennas that were monitored both a week ago and
this<br>
time behaved the same way on both days.<br>
<br>
ea06 returned power plant voltage as exepcted, but always
zero for<br>
current.<br>
<br>
ea12 is on the east arm but I neglected to notice that.<br>
<br>
<br>
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</blockquote>
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