Tech Staff Meeting Notes June 12, 2012
The top priority is always repair of down stations.
NM problem stations
ET problem stations
The Fish Fry will be Friday, August 31, 2012.
EDIT, NNAR & CHNM: NNAR and CHNM repeat through EDIT and the received signal is very bad due to trees. NNAR and CHRM are very noisy and fade out quite a bit. EDIT is now located in the Chicksaw National Wildlife Preserve so cutting trees is not an option. There isn't a clear path to a repeater on the Edith forest tower either. Need a new plan (maybe go directly to the node?).
WALK: Chris and Manning were unable to reach WALK up in the KY bend. Mr Lynn indicated that the station was completely underwater but it is still up? (yes still up).
Down
HCAR
LRAR.EHE
HDAR
HDBT
Unk Problem
CACT.EHN
RDGT.EHZ
MORT.EHZ
LEPT.EHZ
MIST.EHE
HENM.HH*
Isis Oxidation
BACM.EHE
Muted Amplitude
BETM.EHN
BRNM.EHN
MCAM.EHZ
Strong Motion Stations Down
RDST
HDAR
Mag. 4.0 gain range problems
These stations had problems with the gain channel during the Magnituded 4 Missouri
event on Feb 21, 2012. It isn't clear to me whether they data channels saturated
or whether there was excessive chatter in the gain channel.
See image.
CHRM
DWDM
MATM
FLPT
HTAR coax problem.
Weak Battery/Solar
There were 10 stations down for this event. I'm guessing that for a
majority of them it was just the battery. Chris fixed 4 of them. HCAR was
flooded and HTAR is a likely coax problem. The remaining 4 are listed
/gaia/smeagol/dat2/Working/NM/201112/20111224_124800_MAN
The of those four were upgraded to isis3. Need to check LVAR.
DBB
MKTA
LNXT:
Jim is getting a quote to replace the generator blockheater, muffler and exhaust manifold, and vaporizor solenoid.
Mitch needs to modify env_alarm to customize for lnxt generator alarms:
Here are what the new Lenox node status alarm channels will be when the new generator interface module is installed. As was the case before, all outputs are normally high and go low to indicate an alarm condition. High is defined as +2.5 VDC or approximately +1024 counts.
- Ch2 Generator Failure, will go low when generator tries to start and fails (was AC power failure)
- Ch3 XLAK GPS IRIG time code generator alarm (no change)
- Ch4 Generator online, will go low when the building AC is transferred to the generator (was Moisture alarm)
- Ch5 Dyersburg Elec./Building AC fail, will go low when Dyersburg Elec. AC lines into transfer switch are dead. (was Intrusion alarm)
- Ch6 Under temp. <50 F (no change)
- Ch7 Over temp. > 90 F (no change)
NMAD:
G and D and the local EMA installed a 25kW generator to power that side of the building. If there's room power-wise would they let us power the rack from it too? We could share the maintenance of the generator. We'd also have to install a transfer switch.
AZTN:
CERI:
Twisted pair from Richardson is extremely noisy causing problems with
the analog backbone. Richardson is also on the UM 5-year capital
improvement plan to be replaced. We got a tour of Wilder and its doable.
We need to see if we can get a path to CERI so we know whether we just
need to move what's on Richardson now, or whether we need to turn Wilder
into an entirely new node (i.e. new mudworm). Then we can get Planning
to help us with a design and then we can get permission.
We could just move the firewall from 3904/218 to Wilder and get the DBB
on the campus internet that way (if there's no aironet line of site).
There are good telephone pairs from from the Wilder roof to the basement
and we could move the ceri node/mudworm to the basement. Otherwise we'd
have to find and trust connections between the basement and CERI.
We have line of site from the southeast corner of 3904 except there are powerlines in the way. Can we put up a tower on the east side of 3904 to get over the trees and power lines on central?
Ownership, Operation, and Maintenance of the four Charleston, SC stations (C1SC, C2SC, ADSC, and TRSC) was turned over the Univ. of SC at Columbia. At Phillip's request, we letting the data flow through CERI for the time being. Eventually it will get switched to Columbia and the network codes will then change from NM to CO.
RDST, CBHT, and MCAR are coming in via gcf2ew on anssworm. CBHT occassionally loses its connection but is overall, ok. MCAR loses its connection about twice as much so while its mostly functional, it should be better. At RDST, a datapacket sneaks through a couple times per day--it needs an end to end internet checkup.
Replace foam rubber plugs at all year 1 stations (need to notch it to accomodate the GPS pods): ASAR, CBHT, CUET, CVTN, HDBT, LNXT, MCAR, NAIT, SFTN & TUMT.
NAIT: Couldn't get the NWS cable modem to cooperate at NAIT (firewall?). Dean was going to ask Comcast about it and maybe get a new modem. Steve will follow up.
CVVA. John contacted DMME again. He's also looking into the possibility of a freewave link to UVA.
We need a single document (access database excel spreadsheet) to document information on all freefield strongmotion stations to include contact(s), current IP's(eternal/external), what ports are allowed in from what IP's here at CERI, telnet yes or no, trigger levels etc. etc.
HDBR
HDAR
Bad CMG5 E/W.
Not getting broadband feed.
HDBT
Replace two bad mss100's.
GTTN move is waiting on Mr. Philyaw to schedule a crew to move hardware. He will contact John when he does.
Down
CMGA
TRYN
WSNC
Unk Problem
BCRT- horizontals amplitude is smaller than vertical
SWET- drifting horizontals and
glitches on all channels.
Strong Motion stations
CVVA- no internet
CSTN- still gappy
GTTN.HNN
CPRT.HN* - interference -glitches on all channels
Only the DYTN upgrade remains.
See map.
Agreement is complete: clear to launch.
STAR Node
BHT move. John has a verbal permission from the Catoosa WMA to move it about 9 miles to the E NE to Pilot Knob Mtn. This likely will need to be a written permission. The new location does not have a path to Star Mountain but we do now have hardware for the digital upgrade (a Basalt).
BRBC Node
Central Receive: Still have interference from the ham operator. John will pursue this with the FCC.
TRYN: New tower and building are in place, O.K. to install anytime.
WSNC: Fixed transmitter but had to pull the sensor to repair the E-W channel.
CMGA: need to camp out with a spectrum analyzer to identify the interference.
MTTN Node ASTN: Change to AC power. We have permission and can install anytime.
We need a better plan for end-to-end O&M of the GPS network in the post JPD era.
Granites are on a 192 network. Steve is setting up a worm to pull data over the wireless and do an end-to-end test for two weeks prior to installation.
The rotation sensors leaked. PMD no longer makes them and isn't willing to repair or replace. New sensors are not in the budget.
HDBT enclosure is reinstalled.
There is about 50' of water in the 100' borehole. The sensor package leaked and is now trashed. It is not repairable and there's no budget for a new sensor.
CMG5TD is ready for installation at HDAR. Need to reinstall hardware for link to AZTN.
Chris is looking for suitable bags to protect CMG6TDs during burial. First experiment with a bag under water failed.
What equipment in the FDL is no longer needed. Mitch will call a meeting of FDL users to discuss culling the equipment. Also, the check out/in process is largely ignored--what system could be implemented that people will actually use. Jer Ming is having trouble with some of the old equipment.
We have one bad CMG-6 Should it go Guralp for repair? Who pays for it?
Paris Tn plan a visit whem looking for Middle tn Site.
New door locking scheme got delayed.
The seisnet group on umdrive is at http://umdrive.memphis.edu/mwithers/seisnet You will need your uuid and password.
