Tech Staff Meeting Notes April 9, 2018
The top priority is always repair of down stations.
NM problem stations
ET problem stations
Duty Table updated October 2017
There may be funding for deferred maintenance. We need a prioritized list with cost estimates. Priority items are AQMS, obsolete equipment replacement (e.g. CMG5TD), some a2d conversions, etc. Everyone should get their lists to Mitch by Wednesday, 4/11.
The Fish Fry is tenatively scheduled for Friday May 4. Mitch to verify with Chuck.
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.
ET stations were discussed. Mitch and Holly need to sit down with a map and decide what stations are needed most in a post-N4 world.
SIS areas of responsibility
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.
Ten node PC's were purchased and are in house. Nine are assembled and one has a bad memory module. The prototype is ready to go and will be installed at mkta this week.
There are 7 ISIS3 upgrades to do in 2018.
I40 Bridge comms. Granite HD4 is in the shop. Steve ordered new flash.
DBB:
MKTA:
Purhased ten new receivers to fix the analog glitches.
LNXT:
NMAD:
Need to tune the NMAD node receivers (its been a couple decades). In progress.
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:
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.
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.
STAR Node
Move PMTN due to excessive noise and vandalism. The trees at Lone Mountian are too tall
to get a signal out. Looking for an alternate site. Ability to use a cell
modem would provide more options.
HPNC Node
New plan for GFM is to keep it at existing location and convert to digital with
a trillium compact which enables using the existing vault thereby minimizing
the amount of hardware and supplies that need to be hiked in. The first
test of the digital link between GFM and hpnc was unsuccessful but this needs
to be repeated with a pop-up antenna when a larger crew is available.
MTTN Node
WMTN pit needs to be moved due to erosion. John and Chris were there during
the staff meeting--should be done this week.
Need to add solar to PTGV and STLE.
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).
Z41A has a poor connection with AT&T. Can we switch to Verizon?
We should replace obsolete routers at all AG stations. The ubiquitis are good
but run hot and are power hogs. They are behind the AR network firewall.
HHAR needs a bigger solar regulator. The new one should last a year.
The FDL wiki is here:
https://umwiki.memphis.edu/display/FDL/CERI+FDL
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.
NMDown
Data taken from:
/dat1/seisadm/Working/NM/201804/20180407_175618_MAN
/dat1/seisadm/Working/NM/201804/20180409_102252_MAN
Down
LVAR
MTAR
LNXT.HN*.01
Misc Problems
RVAR.EHE see image
AZTN is done and we should have a drop and rack space at the law school
this week. Need to finish that, then schedule a lane closure to replace
the radios on the bridge.
NODE Tasks
ETSZ
ETDown
Data taken from:
/dat1/seisadm/Working/ET/201804/20180402_041740_MAN
/dat1/seisadm/Working/ET/201804/20180410_103000_MAN
Down
CVVA
VHTN
CPCT.HNE see image
Misc Problems
SHTN - timing see image
CCNC - Interference generated glitches make
periodically make this station unusable.
Polarity reversed
DSNC
GFM
Example from Nov 13, 2017
Example from Dec 3, 2017
GPS
AG Network
FDL
MISCELLANEOUS
