Tech Staff Meeting Notes June 14, 2018

The top priority is always repair of down stations.
NM problem stations
ET problem stations

Duty Table updated October 2017

Priorities

• Station repair
• Puffy Cap Review (replace hpncworm and mttnworm)
• Install I40 Bridge replacement radios
• CVTN router
• AG Service run

News & Highlights

We discussed the idea of a strongmotion station near the student section in the FedEx Forum. We could run helicorders and have a swarm display. Gary contacted Athletics who sounded positive. Mitch will write a plan to persue.

Network upgrades will be done at CERI beginning Friday night (6/15) at 11pm central and should be complete by 5am. Steve volunteered to be at CERI, at least at the beginning to try to minimize the impact to helen. Mitch will notify NEIC and partner RSNs.

We had a bad week for vehicles. #411 likely needs a new engine. Chris is investigating whether to rebuild or replace with a new used vehicle. #388 had a water pump go out and was towed to Memphis, then it got broken into while at the repair shop overnight. Fortunately its repairable and nothing of significant value was lost.

USGS plans to fund three of our Deferred Maintenance items.

• AQMS upgrade: replace obsolete AQMS systems with new redundant linux/postgresql developed at PNSN.
• New transfer switch for NMAD and new resets for each of the NMSZ nodes
• 4 ET analog to digital conversions (6 channel) for GRBT, ETT, CCRT, and GFM. Three will stay shortperiod and add a sm. GFM will convert to broadband. Hardware will be Centaur DAS, Titan sm, and a Trillium PH for GFM. Hardware orders are in process now. Funding will likely not be in place til late fall. The work will need to be complete by the end of the current coop on Jan 31, 2020.

There will be a GPS week rollover (max week count exceeds 1024) in April 2019. Some of our clocks may be affects. Dave Wilson at ASL is taking the lead to contact vendors for information on expected behavior.

SIS

SIS areas of responsibility

• NM shortperiod: Dave Steiner
• NM broadband: Dave Steiner
• ET: John Parker
• strongmotion west: Dave Steiner
• strongmotion east: John Parker
• AG network: Chris McGoldrick

Make sure Mitch gets an email for any equipment change that will generate a SIS update. Philip Crotwell has an app that let's you do updates on your phone.

We've been inconsistent with portables in SIS. The data do not go to IRIS but arrivals do go to Comcat. Should the metadata be in SIS or not? Answer: While metadata for portables is allowed to be in SIS, its not required.

NMSZ

NMDown

There are 7 ISIS3 upgrades to do in 2018.

I40 Bridge comms.
PC at the Law School is operational with a waveserver, a winston waveserver, and a seedlink ringserver. Jim is working on coordination with lane closures for the lighting upgrades in July. They are working over night but we would have enough daylight to do one DAS per day.

The I40 DAS compact flash (CF) cards are a known point of failure in the Granites (2 of 7 have failed so far). We will purchase and configure 5 more and install at the same time as the radio. HD4 with its new CF will also be installed at that time.

NODE Tasks

Test and verify all node alarms.

DBB:

MKTA:

LNXT:

Adjust startup delay in transfer switch settings to give generator time to warm up.

NMAD:

AZTN/HDBR: Need to pull the 200' sensor at the weigh station. Probable water damage. There is no budget for this. Should we try to repair the sensor at MPHB and put it at HDAR2 (MPHB is over two decades old, possibly closer to three)? Should we turn off the HDAR2.*.20 channels until the sensor can be replaced?

CERI:

ETSZ

mttnworm and hpncworm have puffy caps and need to be replace ASAP. We will replace with GX620/Atom PC lashup. Systems are configured and ready for testing.

GFM and DSNC have polarity reversals. These were affected by the ISIS4 bug but had their canisters replaced last year. Jim reports that the data at GFM was fixed after the canister replacement on Nov 15, 2016. See additional notes.
John did a hammer drop test at DSNC on May 2 and the data were discussed at the meeting. The two drops on the north side show opposite polarity when they should be the same but both drops on the south side were down. One way to view that result is 75% show correct polarity so some uncertainty remains. The data also showed the E/W channel is correct and the vertical is reversed. John verified the wiring is correct. Further investigation is needed. Example from Nov 13, 2017
Example from Dec 3, 2017

Replacement station for GTTN and RBNC needs a new plan. A cell modem would provide more options.

Need to remove antennas, coax, and any other hardware from the tower at Greentop. John and Chris will schedule a trip.

ETDown

STAR Node

ETT north channel does not respond to lower frequency signals. Need to replace and repair the S-13. John suspects a leaky vault.

Move PMTN due to excessive noise and vandalism. John has a site and sent a draft MOU to Mitch.

HPNC Node

MTTN Node

GPS

TN Department of Corrections owns 640 acres at SCCF in Clifton in central TN with possible locations for the new GPS station. But none of the potential sites are perfect so Bob needs to visit and decide which spot is best. But Bob is in Buenos Aires so it will need to wait til June. The agreement can be initiated in the interim and TDOC would like to combine this agreement with the one for NWCC which has expired. (Note the seisnet agreement is from 2008 and has no expiration).

AG Network

Horton has $1500 in travel that needs to be used. Will use it on the annual prefentive maintenance trip.

Z41A has a poor connection with AT&T. Can we switch to Verizon?

HHAR needs a bigger solar regulator. The new one should last a year.

FDL

The FDL wiki is here: https://umwiki.memphis.edu/display/FDL/CERI+FDL

MISCELLANEOUS

The seisnet group on umdrive is at http://umdrive.memphis.edu/mwithers/seisnet You will need your uuid and password.

The seisnet wiki is at https://umwiki.memphis.edu/display/CERITech/CERI+Tech You will need your uuid and password.