IRIS/IDA GSN Station Status Report

Listed below is station status information for all current IRIS/IDA stations.

(This page was last updated on November 21, 2009)

2009.03.23

The triggered channels from the FBA-23 accelerometer are non-seismic
for reasons yet to be determined.

2008.11.14

IDA station AAK has been upgraded to a Quanterra Q330HR system.


2007.11.23

Telemetry to the station has been restored as of about day 2007,327.

2007.10.29

The station is back online after an IDA engineer visited the station and 
replaced the DAS.  Telemetry to the station is currently down.


2007.07.20

The station is down due to a faulty circuit board in the DAS.


2006.04.06

The station is up as of about day 093-04:22 (Apr. 3) after power was restored.


2006.03.20

The station is down due to a power outage.  The electric company has cut
power to the station.


2004.08.19

Station is up as of day 230 (8/17/2004).  Station operator replaced the GPS 
clock and cycled power to the DAS. Telemetry also restored.


2004.08.09

Station is down. Data is flowing into the DAS however station remains down due
to clock problems. Replacement GPS clock shipped 7/2/2004 in Customs.
The station experienced a power outage in the second week of July due to a 
storm. Power to the station was restored after the station operator replaced 
a damaged RS232-485 converter connected to the DAS. 

2004.06.03

Station's GPS clock has failed.  A replacement will be shipped to station
operator to replace the bad one.


2004.05.18

Telemetry data start to come in via CTBTO GCI.


2004.05.17

An IDA engineer visited the site to replace station's ISP which fixes a
recording problem which had developed over the past two months.


2003.10.20

The station is up after an IDA engineer replaced the station's ISP, DAS, and 
GPS clock.


2003.06.02

Station is down due to communication problems between the DAS and ISP.


2002.11.19

The station is up.  During a recent repair visit, an IDA engineer replaced
several parts damaged by a lightning strike during a March 2002 electrical
storm.  These parts included the main power supply's mother board, the main
circuit board of the remote power supply, the ISP's serial port supporting
the DAS uplink, the DAS XCOM board, and the GPS clock's Truetime Converter
circuit board.  The radio telemetry circuit connecting the station to Chumysh
is down, but no repair attempt was made because there is no longer an Internet
connection to Chumysh.

2002.11.11

New EPROMs installed to correct DSP problem. 


2002.09.21

Station is still down.  An IDA engineer is preparing to visit the station to
analyze and repair the recording problems.


2002.04.22

Station is currently down due to problems with the DAS and DAS-ISP
communications hardware.  Spare parts have been shipped to the station
and will be installed by the operator shortly.

2009.09.10

The station operator reports replacing the DAS on day 239 (Aug. 27). However,
the new DAS is not functioning correctly. The station remains down. 


2009.07.22

Data received from the station indicates there is a bad RT303 circuit board
in the DAS, as well as communication problems between the DAS and ISP.
The problem began on day 2009,185-04:07.


2009.07.04

The station operator reports that there is no communicaton with the DAS.  Only
barometer data is being acquired.  The problem is yet to be determined. 
 


2008.04.04

The vertical channels from the STS-1 sensor are showing excessive spikes as of 
about day 2008,016 for reasons yet to be determined.  


2007.09.07

The station operator replaced the GPS clock and data acquisition has
resumed.


2007.08.15

The station operator reports replacing the DAS with one shipped from
UCSD. There are now problems with the GPS clock that are currently being
investigated.

2007.06.13

The station is down due to communication problems between the DAS
and the ISP.


2006.09.22

Project IDA engineers visited the site and replaced the station's power
supply, ISP, and strong motion sensor, repaired the STS-1 sensors,
and upgraded the station's telemetry system and software. 


2005.08.17

Station is up since day 111-08:56 (Apr.21).  


2005.01.05

Station is down due to communication problems between the ISP and DAS.


2004.08.09

Station operating normally.


2003.03.31

ABKT gateway disk failed, replacement sent.


2003.01.06 

Telemetry down.


2002.09.24

New EPROMs installed to correct DSP problem. 

2002.04.25

Station is operating normally.  There is a problem telemetering data
from the recording site to the host institute.  Replacement batteries
to address power system failure at Freewave relay site are being shipped
to the station.

During the next site visit, the free period of the STS1 sensors should be
adjusted.

2009.11.03

The station was down from day 2009,305-13:00 to 2009,307-13:18 due to power outages.
The station is currently on-line, however, UPS batteries are low and need to be recharged.


2008.09.25

The station was down from about day 2008,267 to 2008,269 due to problems with power
to the station after a recent storm.  The station came back on-line after the station
operator restored power to the station.


2008.04.10

The station was down from about day 2008,100-09:29 to 2008,101-07:56 due to a power
problem and problems with the connection to the station.  The station came back
on-line when power was restored and the station operator replaced the ethernet
switch and cables. 


2007.09.14

The station was down from about day 2007,254-22:29 to 2007,257-07:35 due to 
problems with the DAS.  Data acquisition resumed after the station operator
cycled power to the DAS.


2007.09.01

The vertical channels from the STS-1 seismometer are nonseismic as of about
day 2007,244-09:07.


2007.07.12

The station is back online as of about day 193-12:56 after the station operator
reconfigured the cabling to the DAS. 

2007.07.08

The station is down as of about day 189-18:55 due to communication problems
between the DAS and the ISP that are yet to be determined.


2007.05.07

The vertical channels from the STS-1 seismometer had background noise until 
about day 127 due to a faulty cable connected to the DAS.


2007.04.18

New station ABPO installed in Madagascar with a MK8 data acquisition system. 
Sensors installed include STS-1 broadband and STS-2 short period seismometers, 
a strong motion sensor, and a Paroscientific microbarograph.

2007.09.10

The station operator cycled power to the digitizer and reports the station
is back online.


2007.06.30

The station is down as of about day 2007,181-21:22 due to communication problems
between the DAS and the ISP that are yet to be determined.


2007.06.09

The GPS clock is in an unlocked state as of about day 160-01:01.
Timing of data since this time is uncertain. The station operator
has been requested to cycle power to the GPS clock.  Data are continuous
and data waveform quality remain unaffected.


2007.02.19

The station operator reports that the CD drive for the ISP failed.


2004.08.09

There are problems with the station's GPS clock. 

2004.04.19

Data acquisition restored after comm reset by operator.  DAS firmware upgraded
to address recording of wdi data.


2004.03.29

The VMV-10 and VMW-10 channels from the STS-2 seismometer are
saturated because the sensor's masses need to be recentered.


2003.10.06

Telemetry problems persist. The station operator requested to reset 
comm (10/1).


2003.09.08

Telemetry back after station operator cycled power to the iridium modem 
and router.


2003.09.04

Telemetry down as of 2003:239-22:36 (Aug.27). Station operator requested
to cycle power on transceiver and router.  


2003.08.25

The data acquisition system has been upgraded to a MK8 system.  Additional sensors
have been added including STS2 and FBA-23 seismometers and a Paroscientific 
microbarograph.


2002.04.22

Station is operating normally.

Low gain broadband channels show problems with multiplexor from 2000.01.01. 
High gain broadband channels from 2000.02.25.
To be fixed upon upgrade.

2006.09.26

The broadband channels from the STS-1 sensors showed excessive noise from 
days 266-22:20 to 269-12:00. Data quality improved after the station operator
repaired an electrical fault in the system wiring.

2005.03.21

Station is up after the station operator repaired two faulty RT303 boards in
the DAS.


2005.02.11

Station is down due to problems with the ISP and DAS. 


2004.08.09

Station operating normally.


2003.04.22

New EPROMs installed to correct DSP problem. 


2002.04.22

Station operating normally.

2009.05.23

The station is up after an IDA engineer visited the station and upgraded it to a Quanterra
Q330HR system.


2009.03.15

The station is down since about day 2009,073 due to problems with the DAS that are yet
to be determined.


2009.01.12

ASCN timing issue

The timing system at ASCN began behaving strangely on 2007:320-10:51. When this occurred,
clock lock was lost, so the DAS' oscillator was no longer adjusted to the nominal data rate.
After repeated attempts to resolve the problem with the assistance of the station operator,
an IDA engineer traveled to the site from June 3-16, 2008. He replaced the DAS and clock but
was unable to resolve the problem, which is now believed to be rooted in a grounding issue
along the uplink cable. We are now planning to upgrade the data acquisition system and replace
the uplink cable sometime in early 2009.

Using the station's computer whose own oscillator is disciplined by NTP, it is possible to
repair the timing of the data to an accuracy of less than one minute. Because the quality of
the waveform data remains high, we have elected to distribute these data with bit 7 of the data
quality flag in the fixed section of the SEED data header set to indicate that the time tag is
questionable. Data from 2008,177 (June 25th) are distributed in this way.

Peter Davis, January 12, 2009 


2008.06.12

The north-south channels from the CMG3-T seismometer are non-seismic.  The sensor needs to
be recentered.


2008.04.07

The station operator replaced the DAS and GPS clock on day 2008,094.  However, the station is
still experiencing problems with the new DAS and GPS clock.


2007.11.16

The timing for data from IDA station ASCN is unreliable as of about day 2007,320 due to problems
with the GPS clock and the DAS that are being investigated.


2006.05.23

The vertical channels for the CMG3-T seismometer were restored about day 139-14:26 
after the station operator recentered the masses for the CMG3-T seismometer.


2006.04.12

The vertical channels for the CMG3-T seismometer are out.  The station operator
is requested to recenter the masses for the CMG3-T seismometer.


2004.11.05

Station is back up after the station operator replaced the power supply,
LAN extender, and GPS clock. Telemetered data acquired as of day 309-13:17(Nov. 4).


2004.09.20

Power supply equipment in transit to station.


2004.08.19

Station is down due to problem with vault power supply.  No data since 8/5/2004.


2004.08.09

Telemetry still down. Station operator asked to power cycle DAS and modem, and
check modem connections.


2004.07.12

Telemetry data are still not available.  The station operator has been
asked to power cycle the ISP computer.


2004.07.09

Station operator cycled power on modem and reported that seismic equipment
appears to be operating normally.


2004.07.08

Telemetry data stop coming in since 2004184.  Station operator has been
asked to check the system situation, the connectivity status and power
cycle the modem.


2003.12.01

There are connectivity problems to the station as of 11/28, due to problems
with the station's modem. 


2003.11.24

The data acquisition system has been upgraded to a MK8 system.
Additional sensors have been added including CMG-3T and FBA-23 seismometers
and a Paroscientific microbarograph.


2003.09.19

Station is down due to problems with the DAS.


2003.05.16

BBZ channels back to normal as of 2003:096-13:55 (April 6, 2003). 


2003.03.12

Vault power supply fixed. SP,MP channels dead, BBZ channel dead as of
2003:069-08:43 (March 10,2003).


2002.11.28

New EPROMs installed to correct DSP problem.


2002.11.25

Station is back up after replacement of power supply.



2002.11.05

Station is down due to power supply problem.


2002.04.22

Data streams from STS2 are dead.  Recent tapes are difficult to read so a
replacement DAT has been shipped to the station.

2009.04.08

Data is being withheld for the VGZ,WDI, UAN, and UAE channels.  
The UAN and UAE channels have been disconnected since about day 2009,098.
They will be reconnected after the Askania pendula is relocated within the
site.


2007.08.19

Data quality for the VGZ channel improved as of about day 2007,231-0735, and
for the WDO channel as of about day 2007,228-1840.


2007.07.23

Data quality for the VGZ channel from the gravimeter and the WDO channel from 
the microbarograph is poor as of about day 204-06:28 for reasons yet to be 
determined.  The station operator reported a power outage due to a lightning 
strike.


2005.02.08

The E/W channels for the STS-1 seismometer are back after the station operator
replaced the faulty RT303 board in the DAS.


2005.01.10

The E/W channels for the STS-1 seismometer are out due to a faulty RT303 board
in the DAS.


2004.08.18

The response for the VAN and VAE channels from their original installation
to the present has been corrected.
The former response for these channels was incorrect. 


2004.07.08

Station was hit by lightning.  Several buffer amplifiers
got fried.  Five hours later, the station operation is
back to normal after the damages were repaired.


2002.08.30

New EPROMs installed to correct DSP problem. 


2002.04.22

Station is operating normally.

2008.03.07

A new GPS cable was installed on day 2008,067 and resolved the GPS clock problem.


2008.02.29

The timing for data from IDA station BORG was unreliable from about day 2008,055 to 2008,060
due to problems with the GPS clock.  A new cable for the GPS clock is being shipped to the
station.


2008.02.11

The timing for data from IDA station BORG was unreliable from about day 2008,042 to 2008,048
due to problems with the GPS clock.


2008.02.01

The station was down as of about day 2008,032-10:10 due to problems
with the GPS clock. Some wiring to the GPS clock antenna was damaged by 
horses. 


2007.01.24

An IDA engineer visited the station and replaced the GPS clock 
since the GPS clock sent to the station failed.   

2006.10.31

The station operator replaced a faulty GPS clock on day 304.  The GPS
clock had been in an unlocked state since day 228. Timing of data
during this period is uncertain. Data are continuous and data 
waveform quality remained unaffected. 


2005.06.07

Station operator reports replacing the ISP and UPS for the VSAT (05/11).
Telemetry to the station is down since 05/11.

2004.08.19

Telemetry restored on 8/10/2004.


2004.08.09

Telemetry down as of 7/28/2004. Station remains operational.  


2003.09.08

The data acquisition system has been upgraded to a MK8 system.  Additional
sensors have been added including an FBA-23 accelerometer and a Paroscientific
microbarograph.


2003.03.17

DAT drive and on-site spares have failed. Replacements shipped 2003.03.17.

2002.09.19

The operator installed the DAT drive shipped from IDA and restored data
acquisition.


2002.08.30

The operator notified IDA staff that the DAT drive has failed and that there
are no spares on site.


2002.07.18

New EPROMs installed to correct DSP problem. 


2002.04.22

Station is operating normally. 

Telemetry to the station is not available due to difficulties communicating
through the firewall at IMO.  Alternate communication routes are being pursued.

2008.04.14

The horizontal channels from the STS-1 sensor are showing excessive spikes as of about 
day 2008,001 for reasons yet to be determined.


2007.09.22

An IDA engineer visited the station and reinstalled an STS-1
seismometer in place of the STS-2 that was temporarily installed.  


2007.05.17

The East-West broadband channels are nonseismic as of about 
day 137-12:20 for reasons yet to be determined.


2005.07.18

The broadband channels (BB*) are restored after the station 
operator replaced the STS-1 sensor with an STS-2 sensor.  The 
STS-2 is a temporary installation until the STS-1 is fixed and
sent back to the station.


2005.05.31

Station is up after an IDA engineer replaced the ISP, restoring
communication between the DAS and ISP.  There are problems with 
the STS-1 sensors and they have been sent back to UCSD for 
troubleshooting/repair. 


2005.02.22

Station is down as of 02/19/05 due to communication problems
between the DAS and ISP.


2005.02.14

Station is back up after the station operator switched the
uplink port on the GPS clock.


2005.02.08

Station is down due to problems with the DAS (01/31/2005).


2005.01.27

Station back up after an IDA engineer rebooted the DAS. 


2005.01.26

Station is down due to communication problems between the ISP and DAS.


2004.08.09

Station operating normally.


2003.11.24

Station operator reports problems with Power Supply.  The station remains 
operational, however, there is no power to the GPS clock and microbarometer.


2003.07.14

Telemetry temporarily down from 2003.07.09 through 2003.07.11 following storm.
Station remained operational and NRTS data for this time period was
acquired when telemetry restored. 

2003.01.09

Operator replaced DSP board using spare shipped from San Diego.
Data collection of S**/LN*/EN*/VM* channels restored.

2002.10.06

Data streams from 16 bit channels (LN*, EN*, S**, VM*) are non-seismic.
Failure of DAS DSP board suspected.

2002.09.01

Station is back up following repair of power system.


2002.08.05

New EPROMs installed to correct DSP problem. 


2002.06.24

Station is down due to power supply problem. 

2002.04.22

Station operating normally.

2008.12.26

The station is back online as of about day 2008,361 after the station operator
replaced the DAS with one shipped from UCSD.


2008.10.27

The station is down due to problems with the DAS that are yet to be determined.

2008.10.13

The station is back online as of about day 2008,286.


2008.10.09

The station is down as of about day 2008,283 due to problems with the DAS that are yet to be determined.


2008.09.10

The BH1-10,LH1-10,VH1-10,and HH1-10 channels from the CMG-3T seismometer had excessive spiking
and were non-seismic from about day 2008,245-1453 to 2008,254-1030. They were restored after
the station operator recentered the CMG-3T seismometer.


2008.09.02

The station is back online as of about day 2008,237 after the station operator replaced the
DAS.


2008.07.14

The station is down as of about day 2008,195 due to problems with the DAS that are yet to
be determined.


2008.04.26

An IDA engineer visited the station and installed a new CMG-3T seismometer and restored the 
short period channels as of about day 2008,117.


2007.12.12

The station is back online after the station operator restored the telemetry link to the station.


2007.11.09

The station is down as of about day 2007,313, following a lightning storm that damaged equipment at the station.   
A visit to the station by an IDA engineer is being planned.  

2007.04.15

The station is back online as of about day 105-10:15 after the station operator replaced the DAS,
restored power to the station and restored the telemetry connection to the station. 
The short period channels from the CMG-3T seismometer are out due to a faulty sensor.

2006.10.06

IDA station CMLA is down following a lightning storm that knocked out power
to the wellhead (day 279).  IDA engineering is working with the station operator to trace
the source of the problem.

2006.08.20

The station is up after an IDA engineer upgraded the station to a MK8 system. New equipment
including a CMG-3T seismometer, strong motion sensor, ISP, GPS clock, power supplies, and
a Paroscientific microbarograph have been installed. 
 

2005.09.12

The station is down for reasons yet to be determined.  Telemetry to the station is up, 
however data from all channels are nonseismic.


2005.08.17

The station is up. However, broadband channels for the KS-54000 seismometer, and short period
channels for the STS-2 seismometer are out due to a faulty circuit board in the DAS. 


2005.07.18

The station is down for reasons yet to be determined.  


2005.06.07

Station operator reports receiving equipment including GPS clock,routers,and computers (04/07).
Station operator reports replacing the station processor (04/29).
Telemetry to the station restored 05/18 after the station operator
installed new routers.


2004.12.13

Station operator reports problem with the GPS clock (Dec. 8).


2004.08.09

Station is operational. However, only one board in DAS is working correctly.
Short period channels from the STS-2 sensor are also out. 


2004.06.16

BBZ channels are functional again after DAS was rebooted remotely to
correct a large offset on a RT303 board.


2004.05.19

The vertical channels, BBZ, are down.


2004.05.06

Station is up after the station operator cycled power to data acquisition
system.


2004.04.23

Operator reports no data from DAS.  An additional board failure is suspected.


2004.04.09

The station is up again after the station operator removed a faulty RT303
card in the DAS.


2004.03.22

The station is down as of 2004,077 (Mar 17) due to problems with the DAS.  


2004.03.08

Telemetry down as of 2004:038-00:04 (Feb 7) due to problem with station
modems.  New modems shipped 2004.03.01.


2004.01.29

Station is up again as of 2004:020-18:18 (Jan 20) after an IDA engineer
replaced the power supply, a faulty RT303 card in the DAS, the DAT 
drive, and station modem. 


2003.09.29

Station is down. Station operator reports replacing a surge protector which was
found damaged at the phone line, after which he cycled power. However,
the ARS still indicates there is no data from DAS (9/24).


2003.09.22

Telemetry down as of 2003:260-18:17 (Sept.17). 


2003.07.14

Data from the KS54000 seismometer North-South channels restored
on 2003.07.12 after station operator installed new RT303D board for
the digitizer.


2003.05.30

No NRTS data from 2003:142-23:07:02 (May 22,2003) to 2003:147-12:30:34
(May 27,2003).  BHZ channel out from 2003:147-12:30:34 to 2003:150-23:29
(May 27,2003 to May 30,2003).  After the CMLA digitizer was rebooted at
2003:150-23:29:12, the BHZ channel returned to normal. 

2003.05.27

SP* data restored after a cable to the digitizer was reconnected.


2003.05.07

Station operator installed RT303 cards and new modems. Telemetry restored.
Data restored from the KS54000 seismometer Vertical channels on 2003.04.10
after station operator swapped cards from the channel 2 (bhe) to the channel 0
(bhz) slots. 
Data from the KS54000 seismometer East-West channels restored on 2003.04.30
after the station operator installed replacement RT303 card. 
Currently investigating problems on the North-South channel. No SP* data.

2003.02.18

New DAT drive shipped 2002.12.19 arrived.


2002.10.03

New EPROMs installed to correct DSP problem. 


2002.07.01

The DAS RT303 card digitizing data from the KS54000 north sensor is
behaving anomalously.


2002.04.02

Station is operating normally.

Telemetry connections to the station now made via local ISP.

2008.05.07

The station was down from about day 2008,122-19:28 to 2008,127-23:45 due to problems
with power to the DAS. The station came back on-line after the station operator 
disconnected all the power cords and then reconnected them. 


2008.02.18

IDA station COCO is back online as of about day 2008,049 after the station operator
cycled power to the DAS.


2008.02.10

The station is down as of about day 2008,041 due to problems with the DAS that are
yet to be determined.

2008.01.07

The East-West channels from the KS-54000 seismometer were flatlined from about
day 2008,005 to 2008,007. The channels were restored after the DAS was rebooted.
Previous to this the station was down briefly from day 2008,004 to 2008,005 until
the DAS was rebooted by the station operator. 


2007.12.07

Data quality for the North-South channels from the KS-54000 seismometer is 
poor as of about day 2007,341 for reasons that are yet to be determined.


2007.07.11

The East-West channels from the KS-54000 seismometer were restored at about
day 192-18:25, after an IDA engineer visited the station and replaced a 
faulty circuit board in the DAS.

2007.05.05

Data quality for the North-South channels from the KS-54000 seismometer is
poor as of about day 125 for reasons that are yet to be determined.


2007.03.08

Telemetry to the station is currently down for reasons yet to be 
determined.  The last data received is from day 067-01:41.  
The station operator reports that the station computer is up and 
running fine, and that they are still able to write data CDs.


2007.01.31

The station operator replaced a faulty GPS clock.  The GPS clock had
been in an unlocked state since day 353 of 2006.


2006.10.03

The vertical channels from the KS-54000 were intermittently non-seismic
from day 259 to 268 (Sept.16-25) and day 275 to 276 (Oct.2-3).
The channels were restored after the DAS was rebooted.


2005.12.21

The vertical channels from the KS-54000 seismometer were restored
after the station operator swapped boards with the East-West channel.
The East-West channel is now out.


2005.12.16

The vertical channels from the KS-54000 seismometer are out due to 
a faulty RT303 circuit board in the DAS.


2005.10.21

The station is back up as of day 292-10:00 (Oct.19) after IDA engineers 
replaced the KS-54000 and STS-2 seismometers.  The KS-54000 became operable
2005:292-10:00, and the STS-2 about 293-09:24. 


2005.04.28

The station is down (Apr. 21) due to problems with the DAS. 


2005.03.31

The short period channels from the STS-2 seismometer are out as of day 87 (March 28).  


2005.03.14

The station operator removed two faulty RT303 circuit boards in the DAS. The 
vertical and N-S channels from the KS-54000 seismometer are out until these 
circuit boards are replaced.  


2005.03.07

There is a faulty RT303 circuit board in the DAS for the vertical channels from the
KS-54000 seismometer. The station operator has been notified with a request
to remove the faulty circuit board.
The data quality for the N-S channels from the KS-54000 seismometer is poor. 


2004.09.26

Station is back up after an IDA engineer replaced the main power supply,
ARS, and circuit boards in the DAS. Data acquisition resumed day 268 (Sept.24).  


2004.07.11

Station is down due to power supply problem.


2004.05.18

The vertical channels for the KS-54000 sensor are back as of 2004:139-01:00


2004.05.16

The vertical channels for the KS-54000 sensor are out as of 2004:137-07:20.


2004.03.24

The vertical channels for the KS-54000 sensor are back as of 2004:084-03:30


2004.03.22

The vertical channels for the KS-54000 sensor are out as of 2004:076-00:38
(Mar 16).


2003.07.14

Engineering tests conducted from 2003.07.08 through 2003.07.09 to determine why
the vertical channels from the KS-54000 sensor have excessive noise
show that the problem is downhole. Data for this time period is non-seismic. 


2003.03.17

New EPROMs installed to correct DSP problem. New NRTS workstation installed. 

2002.08.23

Vertical channels from the KS-54000 sensor have excessive noise, for reasons not yet determined.


2002.06.24

Clock has been installed and is now functioning properly

2002.06.10

The clock at the station is not working.  A replacement has been
sent and should arrive soon.

2008.02.22

The station is back to normal operation after an IDA engineer visited
the station and fixed the uplink between the DAS and the ISP, and
repaired the DAS.


2007.08.17

There are communication problems between the DAS and the ISP as of
about day 2007,229-22:54. 


2007.04.27

IDA station DGAR is back online after an IDA engineer visited the station
and restored the link between the ISP and the DAS.


2007.01.25

IDA station DGAR is down as of about day 025-02:27 due to communication
problems between the ISP and the DAS.


2004.10.21

Station is back up after station operator replaced GPS clock.


2004.10.11

Station is down due to GPS clock failure. A replacement GPS clock has been shipped.


2004.08.09

Station is operating normally.


2004.03.22

The WDI-00 channel was out from 2004:039-11:29 (Feb 8) to 2004:075-07:55 
(Mar 15) due to a faulty microbarograph. This channel was restored after
a replacement microbarograph was installed by the station operator.


2004.02.20

New station DGAR, on the island Diego Garcia in the Indian Ocean 
installed with a MK8 data acquisition system. Sensors installed include 
STS-1 broadband and STS-2 short period seismometers, an FBA-23 accelerometer, 
and a Paroscientific microbarograph.

2009.06.28

IDA station EFI has been upgraded to a Quanterra Q330HR system. Seismometers include
a KS-54000 and CMG-3T, and an episensor strong motion detector.


2008.09.05

The station is back online as of day 2008,249 after the station operator replaced 
the ARS, the GPS clock, and cycled power to the DAS.


2008.06.11

The station is down as of about day 2008,163 due to problems with the ARS that are
yet to be determined.


2008.03.27

The BH1-00,LH1-00,and VH1-00 channels from the KS-54000 seismometer were restored as of about
day 2008,087 after the station operator replaced a faulty circuit board in the DAS.


2008.03.03

The BH1-00,LH1-00,and VH1-00 channels from the KS-54000 seismometer are not being acquired
since about day 2008,063-17:47 for reasons yet to be determined.


2007.09.25

The station was down from about day 2007,268-02:23 to 2007,275-19:20 due to
communication problems between the ISP and the ARS.


2007.03.13

The station is back online as of about day 072-13:33 after the station operator
cycled power to the ARS.


2007.03.10

The station is down as of about day 069-01:12 due to communication problems 
between the DAS and the ISP.

2007.02.14

IDA station EFI was down from day 042-10:50 to 045-13:26 due to communication problems 
betweeen the DAS and the ISP.


2007.01.24

IDA station EFI was down from about day 024 to 030 due to communication problems
between the ISP and the ARS. 


2006.10.14

An IDA engineer visited the station to upgrade the telemetry system, and replace
the Main Power Supply and the FBA-23 accelerometer.

2006.09.13

The East-West channels for the CMG-3T seismometer were restored at approximately
day 256-18:50 (Sept.13) after the station operator recentered the masses for the
CMG-3T seismometer.

2006.08.07

The East-West channels for the CMG-3T seismometer are out as of day 219 for
reasons yet to be determined.


2006.08.03

The vertical channels are back as of day 215-14:00 after the station operator
rebooted the DAS.


2006.07.28

The vertical channels for the KS-54000 seismometer are out as of day 209-15:09
for reasons yet to be determined.


2006.03.21

The station operator installed the new tape drive and data recording has resumed.


2006.03.01

The tape drives at the station have failed. A new tape drive is being tested
and will be sent to the station. 


2005.09.26

An IDA engineer visited the site to survey and check the operation of the FBA
sensor.


2005.01.19

Telemetry is down after a lightning strike caused damage to station uplink.    

2004.08.09

Station is operating normally.

2003.08.21

Telemetry restored after station operator installed new NRTS workstation.


2003.07.14

Telemetry down due to workstation hard disk failure. 


2003.04.30

Station operator replaced PC monitor shipped to him.


2003.03.25

New EPROMs installed to correct DSP problem. 


2002.11.26

Station operator performed procedure to recenter masses of CMG-3T.


2002.08.07

The radio telemetry equipment at the station has been replaced.
Throughput of all telemetered channels improved immediately.


2002.07.10

Telemetry continues to be problematic.  New radio equipment was 
shipped to the station this week.


2002.04.25

Station is operating normally but there is a problem with telemetry.
A field engineer is on site (2002.04.24).

2009.10.28

The station is back on-line as of day 2009,301-18:51, after the station
operator visited the station and restored power.  An IDA engineer then
restored data acquisition after cycling power to the DAS and ARS.


2009.10.08

The station is down as of day 2009,281-10:59 due to a power outage
caused by a storm.  The station operator notified he will visit the station 
to investigate.


2007.09.04

The station is back online as of about day 2007,247-02:38 after the
station operator reploced the ISP.

2007.06.28

The station is down due to problems with the ISP that are yet to be
determined. 


2006.12.14

The station operator replaced a faulty GPS clock with a new one shipped 
from UCSD.  The clock was in an unlocked state since day 331-00:31.
However, data remained continuous and data quality remains unaffected.


2006.08.31

The vertical channels for the STS-1 seismometer are back as of about
day 243-02:40 after an IDA engineer visited the site and replaced 
the STS-1 seismometer. The mass position for this seismometer is
drifting and there appears to be a problem with the motor for this
sensor. Also installed was an iboot to allow remote power cyles of 
the DAS. 


2006.06.14

The East-West channel from the STS-1 sensor is noisy since a DAS reset
on 2006,116 (Apr. 25). A trip to the station by an IDA engineer is
planned. 


2006.04.26

The station is back up after the station operator cycled power to the DAS.


2006.04.06

The station is down due to communication problems between the DAS and the ISP. 


2006.02.14

The station is back up after the station operator rebooted the router.


2006.01.17

The station is down as of Jan.12 for reasons yet to be determined.


2005.11.27

The ARS was power cycled at around 2005:331-16:50 (Nov 27) and data acquisition
resumed.


2005.11.24

The station is down for reasons yet to be determined.


2005.01.24

Station is back up after station operator reset the DAS and ARS and reconfigured
connections to the STS-1 sensors.


2004.12.13

Station is down as of day 346-10:54 (Dec 11). The ARS needs to be reset.


2004.08.09

Station is operational.  The vertical channels from the STS-1 sensor are still
out.


2004.05.18

Station operator replaced the broken GPS clock and NRTS computer.  Telemetry
is up after station operator initiated a high speed dedicated internet
connection.


2004.03.08

Station operator replaced DAT drive, reports problem with GPS receiver.
The vertical channels from the STS-1 and FBA-23 sensors are non-seismic.


2004.01.05

Telemetry down as of 12/29 due to problems connecting to modem. 


2003.08.28

NRTS data continuously acquired again as of day 226 (August 14).  
Intermittent NRTS coverage between days 208 and 226. 


2003.07.31

Telemetry down since 208-16:14(July 27,2003). Station operator requested
to power cycle the data logger.


2003.05.16

No NRTS data. ERM station operator power cycled data logger on 2003.05.14,
ERM disk loop acquiring data again.


2003.01.07

New EPROMs installed to correct DSP problem. 


2002.04.22

Recording at the station has been problematic recently.  A telemetry
check of the ARS on 2002.04.22 confirms recording is still normal.  On
2002.04.13 the operator cycled power to data acquisition system.
Operation returned to normal at that time.

2007.06.05

The station is back online as of about day 156-16:20 after the station
operator cycled power to the DAS.


2007.05.31

The station is down as of about day 151-19:20 due to communication problems
between the DAS and the ISP.

2004.08.09

Station operating normally.


2003.09.13

Station operator replaced DAT drive, recording resumed 256-07:13 (9/13).


2003.09.08

Station operator reports DAT drive failure and no spare (9/4). Replacement
shipped 9/4.


2003.01.17

New EPROMs installed to correct DSP problem. 


2002.04.22

Station operating normally.

2009.08.12

The station has been upgraded to a Quanterra Q330HR data 
acquisition system.  Sensors installed include STS-1 broadband
and Trillium 240 short period seismometers, and a strong motion
sensor.


2009.05.12

The station is back on-line as of about day 2009,132 after the
station operator cycled power to the DAS and the ARS.


2009.05.06

The station is down due to problems with the ARS that are yet 
to be determined.  The station operator has been requested to
investigate.


2007.08.17

The station is back up as of day 2007,229 after an IDA engineer
visited the station and replaced the ISP.

2007.07.24

The station is down due to problems with the ISP that are yet to 
be determined.


2006.10.12

The station was down from day 273 (Sept.30) to 285 (Oct.12) due to
problems with the DAS and the telemetry link to the station. 
Data acquisition resumed when telemetry was restored and the 
DAS was rebooted.

2005.08.03

An IDA engineer visited the station to upgrade the ISP and improve 
telemetry. 

2004.10.18

Telemetry system upgrade to VSAT complete (Sept.10).


2004.05.04

Station is up after DAS communication board problem was corrected by
an IDA engineer.


2004.04.05

Station is down due to problems with the DAS. "No Data from DAS" 
message continued after DAS and ARS reset.


2003.11.03

Vertical channels from the STS-1 sensor are back to normal after
the station operator checked and corrected the vacuum for this 
instrument. 


2003.10.06

Vertical channels from the STS-1 sensor have excessive noise, for
reasons not yet determined. 


2003.06.30

Station operator reports installation of replacement modem and
surge suppressor. Telemetry restored.


2003.06.15

Telemetry to the station down after a severe storm, modem damaged.

2003.02.27

New DAT drive shipped.


2002.11.13

Operator reports he has replaced the damaged modem with the unit
shipped to him.  Telemetry has been restored.


2002.10.16

Operator reports the modem has been destroyed during a power
failure that effected the area's telephone system.


2002.07.07

New EPROMs installed to correct DSP problem. 


2002.04.22

Station is operating but recording stops from time to time.  DAS reset
remotely from San Diego on 2002.04.22.

2007.10.23

The STS-1 sensors have been removed from the station as of about day 2007,296.


2007.05.15

The East-West channels from the STS-1 sensor are seismic again as of about
day 135-10:00. However, the mass position channels are still flatlined. 

2007.05.13

The East-West (BBE) channels from the STS-1 sensor have drifted back out
of normal operating range as of about day 133-03:26.

2007.05.07

The East-West (BBE) channels from the STS-1 sensor have drifted back into
normal operating range about day 127-20:05.  However, the North-South 
channels for the STS-1 have drifted out of range, and the mass position 
channel is flatlined as of about day 128-18:10. 


2007.01.31

The North-South channels from the STS-1 sensor drifted back into normal
operating range about day 031-01:43. However, the masses for all STS-1
channels remain in an unstable state and will need to be recentered. 


2006.12.10

Data acquisition resumed about day 344-15:21 after the station operator
cycled power to the ISP, and an IDA engineer rebuilt the disk loops.

2006.12.08

IDA station HOPE is down as of about day 342-10:53 due to communication
problems between the DAS and the ISP that are yet to be determined.
The vertical channels from the STS-1 are non-seimic as of 340-18:00.
The mass position for all the STS-1 sensors need to be recentered. 

2006.08.22

The E-W channels for the STS-1 sensor have drifted out of normal
operating range at about 234-08:45. The mass position channels for
the STS-1 sensors are in an unstable state and need to be recentered.


2006.06.18

The N-S channels for the STS-1 sensor have drifted out of normal
operating range and the masses cannot be recentered due to a faulty
motor in the sensor.


2005.10.17

An IDA engineer visited the station and upgraded the station
telemetry to a VSAT system, replaced the ISP, and adjusted the 
masses for the STS1 sensors. 


2005.07.15

Station operator reports DAT drive failure.  The station operator 
recentered the masses for the STS1 sensors. The E-W is back to 
normal operating range.  However, the N-S still needs adjustment.


2004.07.08

Masses for both horizontal STS1 sensors seem in an unstable state.
The free period on all three STS1's masses needs to be adjusted by
an IDA engineer on the next station visit.


2004.07.05

The masses of the STS1 sensors have been adjusted back to their normal
range.


2004.06.22

The masses of the STS1 sensors (N-S and vertical) have drifted out of the
operating range and will have to be manually readjusted.


2003.07.21

The North-South channels (BBN), and vertical channel (VMZ), for the STS1 sensor
are out following a reboot of the DAS.
Engineering tests conducted 2003.07.18 suggest a problem with the sensor.


2003.05.05

Connection to station restored.


2003.04.14

Lost connection to station.


2003.04.08

New EPROMs installed to correct DSP problem. New NRTS workstation installed.


2002.04.22

Station is operating normally.  Data acquisition restored on 2002.04.15 during
visit by field engineer.  Uplink cable had been severed during relocation of
host institution facilities.

2009.08.29

An IDA engineer visited the site to upgrade lightning protection, and replace 
the STS-2 seismometer. Telemetry to the station was also restored.


2009.08.21

Telemetry to the station is currently down. An IDA engineer is on-site. 

2009.08.18

An IDA engineer is on-site and has restored the STS-1 channels, and replaced the 
station gateway computer.


2009.06.24

All channels from the STS-1 seismometers are non-seismic as of about day 2009,174
for reasons yet to be determined.


2009.06.10

The station was down from about day 2009,156 to 2009,161 due to communication
problems between the DAS and ISP.  Data acquisition was restored after the
station operator visited the station and reconfigured the uplink cables
in the vault, followed by an IDA engineer cycling power to the digitizers.


2009.05.06

The station has been upgraded to a Quanterra Q330HR system.  Seismometers
include STS-1,STS-2,Episensor strong motion sensor, and a Paroscientific 
micro-barograph. 


2009.05.01

The short period channels are seismic again after the STS-2 was re-centered
at about day 2009,122-00:00.


2009.04.22

The short period channels from the STS-2 sensor are saturated as of about day 
2009,112-17:40. A station visit by an IDA engineer is planned to upgrade the 
station to a Q330 system, and recenter the STS-2.


2008.08.11

The station operator reports replacing the GPS clock.

2008.05.07

The station was having problems with the GPS clock from about day 2008,127 to
2008,129 until the station operator cycled power to the GPS clock and reconfigured
the connection.  

2008.04.04

The vertical channels from the STS-1 sensor are showing excessive spikes as of
about day 2008,010 for reasons yet to be determined.


2008.02.19

The station is back online as of about day 2008,046, after the station operator
replaced a connector to a circuit breaker for the power system.

2008.02.09

The station is down as of about day 2008,040 for reasons yet to be determined.

2008.01.17

The station is back online as of about day 2008,017-16:06 after the station operator 
cycled power to the GPS clock.

2008.01.14

The station is down due to problems with the GPS clock that are yet to be determined.

2008.01.09

The station is back online after power to the station was restored about day 2008,009. 


2007.11.05

The station is down due to power problems. The power cables to the station are repeatedly
being stolen and vandalized.  Plans to restore power to the station are being investigated.


2007.10.01

The station was down from about day 2007,274 to 2007,277 due to problems with the GPS clock.
The station came back online after the station operator corrected the clock.

2007.09.06

The station is back online as of about day 2007,249-20:04 after the station
operator replaced the ISP.


2007.08.10

The station is down as of about day 2007,222-02:26 due to failure of the ISP.


2007.08.08

The station is back online as of about day 2007,220-19:56 after an IDA engineer
visited the station and restored power and replaced a faulty circuit board in the DAS.


2007.07.04

The station is down as of about day 185 due to problems with power to the station. 
A faulty power supply is suspected.

2007.06.26

The station is back online after power to the station was restored at
about day 177-07:26.


2007.05.29

The station is down due to problems with power to the station. 
New batteries have been shipped to the station.

2007.05.23

The North-South channels from the STS-1 seismometer are nonseismic
again as of about day 143-20:45.


2007.05.20

The North-South channels from the STS-1 seismometer were nonseismic
from about day 138-01:22 to 140-00:29 for reasons yet to be determined.


2007.05.17

The short period channels from the STS-2 seismometer are seismic as of 
about day 137-18:55, after the station operator recentered the masses
for the STS-2 seismometer.


2007.05.13

The short period channels from the STS-2 seismometer and the North-South
channels from the STS-1 seismometer are nonseismic as of about day
133-13:16 for reasons yet to be determined.


2007.04.18

The station is up as of about day 108-05:05 after the station operator
removed a faulty power inverter and restored power to the station.
The North-South channels from the STS-1 seismometer were nonseismic 
from about day 108-05:05 until a reboot at about 110-16:23.

2007.04.05

The station is down. Problems with power to the station continue, and 
data acquisition is currently intermittent. 

2007.03.27

The station is down as of about day 086-22:40 due to problems with power
at the station that are yet to be determined.  The North-South channels from
the STS-1 were non-seismic from about day 085-12:12 to 086-21:11.  The channels
were restored after power was briefly restored at the station. However,
power is currently out again.


2006.11.22

The station was down from day 325-11:22 to 326-20:27 due to a power outage
following an electrical storm. The North-South channels from the STS-1 
seismometer are non-seismic since the station came back on-line following 
the power outage.


2006.11.08

The station is up as of about day 312-19:45 after the station operator visited 
the station and reconfigured connections to the DAS, changed the switch for the
power converter, checked fuses, and cycled power to the DAS. 


2006.10.06

The station is down as of about day 279-21:42 due to problems with data
acquisition that are yet to be determined. Instructions for the station operator
to inspect the station's power supplies, power cycle the DAS, and check
fuses and circuit boards in the DAS have been sent.

2006.09.22

The station was down from day 257 to 265 due to communication problems
between the ISP and the digitizer. The station is back up after the 
station operator rebooted the DAS.

2006.08.16

The station operator removed the faulty RT303 board from the BBZ location
and the board from the BBE location was switched to the BBZ location.
Now BBZ and BBN data are being acquired and the BBE channels are 
out until a replacement board is sent. 

2006.08.29

The station is up.  Telemetry remains down as the station operator
reports problems with the router and link to the VSAT. The DAS and
computer at the station remain operational and the GPS clock is 
locked. There is still a faulty RT303 circuit board in the DAS. 

2006.08.19

The station is down due to damages caused by a lightning
strike near the station. The station operator has been 
requested to check the status of the ISP.

2006.08.14

The station is back up after the station operator replaced
the GPS clock.  The vertical channels for the STS-1 sensor
are out due to a faulty RT303 circuit board in the DAS.


2006.08.01

The station is down due to GPS clock failure.  A replacement
GPS clock has been shipped.

2005.09.22

The station is back up after an IDA engineer visited the site
and replaced a fuse for the power supply, and faulty circuit
boards in the digitizer. 


2005.08.22

Station is down due to problems with the digitizer.


2005.02.14

Short period channels are back as of day 039-22:40, 
after an IDA engineer replaced the STS-2 sensor.
The FBA-23 accelerometer was disconnected and replaced with
an Episensor. However, the Episensor is not working correctly and
a new one will be sent to the station.  

2004.12.13

Short period channels from the STS-2 sensor remain out after station
operator checked and dried connections to the sensor. A trip to the 
station by an IDA engineer is planned. 


2004.11.15

Station is back up after an IDA engineer replaced the ISP.


2004.10.18

Station is down due to problems with the ISP.
Short period channels from the STS-2 sensor are unstable for reasons 
yet to be determined.

2004.05.05

Station is up and operates normally after an IDA engineer visited the
station to correct its AC power problem, replace all three STS1 sensors
and install two RT303 boards.


2004.04.08

Station is down due to the failure of power system.


2004.01.12

The BBN channel is out. Failure of DAS RT303 board is suspected. 


2003.10.30

Timing problems resolved after the station operator removed the RT303 board for
the BBZ channel (day 302-15:00). The BBZ channel will be out until a replacement
RT303 board is installed.


2003.10.20

There are frequent data gaps beginning on 10/12 due to inconsistent timing
of the datalogger's internal clock, which may be due to an RT303 board failure.
The station operator was requested to remove suspected RT303 board in the
digitizer. 


2003.09.22

Station is back up.  NRTS data acquisition resumed day 262 (9/19).


2003.09.08

Station is down due to power inverter failure. Replacement shipped 9/4.


2003.06.30

Station operator reports installation of a replacement modem and surge
suppressor at the JTS gateway, but notes that phone line still appears
to be down. 


2003.05.30

New telemetry connection with the UN CTBTO completed as of today.

2003.05.29

Telemetry with OVSICORI down due to lightning strike on May 24,2003.
Internet connection at OVSICORI and leased line connection with JTS damaged. 


2003.04.15

Now hooked up to IMS VSAT. Data are currently flowing from the station to the
CTBTO in Vienna.  

2003.03.10

Air conditioning installed.


2003.03.07

An IDA engineer visited the stations and replaced the GPS interface board in
the GPS clock.  This restored the data acquisition system to normal operation.


2003.01.16

The telephone link to the station was re-established today and data collected
prior to the clock problem on 11/24/02 are flowing over the line.  Analysis of
the ISP status indicated that operator efforts have not corrected the problem.


2002.11.24

Station is not acquiring data due to a clock problem.


2002.11.15

The circuit to the station is up and working, although the connectivity
from UCSD to the endpoint at OVSICORI is too slow to support data transfer.
IDA is working with OVSICORI to improve this connectivity.


2002.09.04

Station upgraded to MK7-ISP.  Telemetry problems under investigation.


2002.08.28

New EPROMs installed to correct DSP problem. 


2002.06.25

Station is down due to problems with the DAS.



2002.04.22

Station operating normally.

2009.11.10

The station has been upgraded to a Quanterra Q330HR system.  Seismometers include
KS-54000, CMG3-T, and an Episensor strong motion sensor. 

 
2009.07.02

All channels from the strong motion sensor are non-seismic for reasons yet to be
determined. A trip to the station to replace the sensor is planned.


2008.12.03

The North-South channels from the KS-54000 seimometer were restored as of about day 
2008,338 after an IDA engineer visited the station and improved the signal after 
repairing the KS-54000 cable and termination box. There is still a faulty circuit
board in the DAS that will need replacement. While onsite an IDA engineer also improved
the power system and upgraded the ISP to a Stealth PC, which restored acquisition of 
barometer data. 


2008.11.07

The North-South channels from the KS-54000 seismometer are showing excessive spiking for
reasons yet to be determined.


2008.10.30

The station was down from about day 2008,297 to 2008,303 due to communication problems
between the DAS and the ISP. Data acquisition resumed after power was cycled to the DAS.


2008.04.16

There are gaps in barometer data and multiple reboots due to persistent power problems at
the station.


2008.04.11

The station was down from about day 2008,091-23:46 to 2008,102-04:40 due to power problems.


2008.01.09

The station is back online about day 2008,009 after power to the station was restored.

2008.12.28

The station is down as of about day 2007,362 due to power problems.


2007.11.24

The North-South channels from the KS-54000 seismometer are showing excessive spiking as of 
about day 2007,328 for reasons yet to be determined.

2007.11.14

The horizontal channels from the KS-54000 seismometer have been restored after the
station operator installed an RT-593 circuit board in the DAS.


2007.08.22

The horizontal and vertical high gain short period channels (bhz-10,bhn-10,bhe-10) from the CMG-3T
seismometer are saturated. The station operator has been requested to recenter the masses for the
CMG-3T seismometer. 


2007.08.09

The vertical channel (bhz-10) from the CMG-3T seismometer is nonseismic as of about day
2007,221-13:24 for reasons yet to be determined.


2007.08.07

The North-South channels from the CMG-3T seismometer are non-seismic as of about
day 2007,219-0215 for reasons yet to be determined.


2007.06.26

The station operator removed the faulty circuit board for the North-South channels
from the KS-54000 seismometer.  There is no longer excessive gapping as of about 
day 177-06:06.


2007.06.18

The North-South channels from the KS-54000 seismometer are gapping excessively due to 
a faulty circuit board in the DAS.  The station operator has been requested to 
remove the faulty circuit board.


2007.03.01

The station is back online as of about day 060-04:44 after the station operator
restored power to the station and removed a faulty RT-303 circuit board from the DAS.
The East-West channels from the KS-54000 seismometer are out until the circuit board
in the DAS is replaced.


2007.02.13

The station is down due to digitizer board problems in the DAS.


2007.02.04

The station was down due from day 034 to 039 due to problems with the DAS.


2007.02.02

The East-West channels from the KS-54000 seismometer are gapping excessively due to 
a faulty RT-303 circuit board in the DAS.  The station operator has been requested
to remove the faulty circuit board.


2007.01.24

IDA station KAPI is back up as of about day 024-05:44 after an IDA engineer visited the
station and restored power. The BBN channels from the KS-54000 seismometer were also 
restored after the RT-303 board in the DAS was replaced.


2006.12.20

The station is down as of about day 354-04:51 due to a power problem.


2006.12.14

The station was down from 342-13:59 to 348-05:28 due to problems with data acquisition
that are yet to be determined. 


2006.08.14

The RT303 circuit board in the DAS for the BBZ channels failed around day 210. 
The board from the BBN channels was taken out to replace the board for the BBZ 
channels and BBZ data acquisition resumed about day 226-05:22. 
Both the RT303 boards for the BBN and BBE channels need to be replaced.

2006.05.24

The station is up after an IDA engineer visited the station and replaced
a blown fuse in the Power Supply board.  Power to the station remains 
intermittent due to rolling power outages.  This continually drains 
the backup batteries in the UPS on a daily basis. A new backup power 
system is being investigated.  


2005.11.07

The station is down as of day 296 (Oct.23) due to problems with the DAS.


2005.08.17

The station is up after IDA engineers visited the site and replaced the 
CMG-3T seismometer, barometer, GPS, power supplies, and station processor. 
The East-West channels from the KS-54000 sensor are out due to a faulty
circuit board in the DAS.

2002.07.10

East-West channel from the KS-54000 sensor stopped operating 2002:186
(July 5,2002).
North-South channel stopped operating 2002:149-17:00 (May 29, 2002)
Vertical channel stopped operating 2002:081:05:00 (March 22, 2002)


2002.04.22

Data from the KS-54000 vertical sensor and all streams from the CMG-3T
and FBA-23 sensors are non-seismic.

2009.09.17

The station operator replaced the microbarometer and restored the WDO channel.


2009.08.13

An IDA engineer visited the station to move equipment, as there is a new water treatment
system being installed at the site.  While on-site there were problems with the GPS 
clock, the DAS, and telemetry to the station. The engineer replaced the GPS clock
with one shipped from UCSD, and replaced a faulty circuit board in the DAS. Another
IDA engineer worked with the local leased line provider to restore telemetry. 
There are currently problems with the microbarometer.  IDA engineers are troubleshooting  
the problem with the help of the station operator.


2008.08.13

The WDO channel has been restored as of about day 2008,225-03:07 after the station
operator replaced the microbarometer.


2008.02.02

The station was down from about day 2008,034 to 2008,036 due to a start-up problem in  
the DAS after the station operator performed maintenance on the power system.
The station operator restored data acquisition by cycling power to the DAS.


2007.01.29

The station was operational from day 026-21:12 to 029-18:20.  Power supply problems
persisted as the station was going off and on line intermittently. Normal data 
acquisition has resumed since about day 030. 

2007.01.26

The WDO-00 data from the microbarometer are flatlined as of day 026-21:11 for
reasons yet to be determined.

2007.01.18
 
IDA station KDAK is down as of about day 018-12:40 due to a power supply problem.
The station operator has been requested to look for a spare converter limiter module
for the generator.


2005.04.11

The station is up as of 04/09 after the generator powering the
DAS was fixed.


2005.03.28

The station is down due as of 03/22 due to problems with power
to the station.


2004.08.09

Station operating normally.


2003.09.08

Temporary data gap from 8/30 to 9/5 due to workstation shutdown.
Data acquired again after power to workstation restored. 


2003.06.13

Power failure.  Power was out longer than UPS battery back-up and
station equipment temporarily shut down.


2003.04.09 

New routers at station and gateway, linked via leased line connection. 


2002.10.16

Upgrade of data acquisition system to MK8 is complete.


2002.10.08

Data acquisition is currently down while the station's data acquisition
system is upgraded.


2002.04.22

All channels from the FBA-23 are dead.  Bursts of low frequency noise
on KS-54000 vertical channels noted.

2007.05.24

The vertical short period channels from the CMG-3T seismometer are
seismic again as of about day 144-06:45.


2007.04.29

The vertical short period channels from the CMG-3T seismometer are
non-seismic (flat-lined) as of about day 119-08:59 for reasons yet
to be determined.


2006.04.12

The station was down temporarily from day 96-12:31 to day 98-15:24. 
The station returned to normal operation after a reboot. 


2006.03.01

Station operator replaced RS232 - RS422 converter, and upgraded the ISP 
to a SunFire to include a CD writer, and IDA9 data format.

2004.09.20

Station up after station operator replaced XCOM, RT432 and RT430 circuit
boards in the DAS. Data acquistion resumed 09/20/2004.


2004.08.20

Station is down since 08/10/2004 due to lightning strike causing damage
to uplink.


2002.08.19

New EPROMs installed to correct DSP problem. 


2002.04.22

Station operating normally.

2009.09.18

The station is back on-line after the station operator replaced the DAS.
The station operator had replaced the GPS clock on July 28 but the station 
remained down due to problems with the DAS.

2009.06.26

The GPS clock at KURK failed about day 2009,178-15:24.  A replacement GPS clock
is being prepared to ship to the station. 


2005.06.14

An IDA engineer visited the station and replaced the East-West and North-South
STS-1 sensors, the East-West GS-13 sensor, and the batteries for the UPS.
This restored data for the East-West short period channels and improved the data
quality for the horizontal broadband channels.


2005.04.07

The station is back up after the station operator rebooted the ISP.


2005.04.05

The station is down due to problems with the ISP.


2004.08.09

The station operator reports (8/3/2004) that the East-West channels from the
STS-1 sensor are noisy, after the masses for the North-South and Vertical
channels were recentered. The data quality for the EW and NS channels for the STS-1
sensor is poor.  


2003.12.08

Station back up on 2003.12.05, after an IDA engineer replaced the station's 
power supply and XCOM board in the digitizer.


2003.10.06

DC-DC converter shipped to station (10/03).


2003.09.29

Station operator reports replacing power supply shipped 9/4/2003, however, 
the station remains down due to problems with the remote power supply.


2003.08.13

Station down due to main power supply failure. No data collected since
211-04:41:59 (July 30,2003).


2003.01.19

The EW component of the GS-13 sensor began malfunctioning on this day.

2002.09.09

Station is now operational after replacement XCOM circuit board was installed.
New EPROMs installed to correct DSP problem. 


2002.08.20

Station is currently down due to lightning damage on July 16th. 

2002.04.22

Station operating normally. The NS STS1 sensor is noisy.

2009.11.19

The station is back up as of day 2009,322 after the station operator replaced
the hard drive in the ISP.

2009.11.16

The station is down as of day 2009,315 due to problems with the station computer.
A new station computer is being prepared to ship to the station.

2009.02.26

The station was down from about day 2009,049 to 2009,057 due to problems with the 
power inverter.  Data acquisition was restored after the station operator cycled
power to the inverter.


2008.10.29

The station was down from about day 2008,291 to 2008,303 due to communication problems 
between the DAS and the ISP. Data acquisition was restored after the station operator
cycled power to the DAS.


2008.09.10

The East-West short period channels from the STS-2 seismometer are seismic as of about
day 2008,247-2050.


2007.09.26

The station is back online as of about day 2007,269-20:25. The East-West and low gain
short period channels from the STS-2 remain nonseismic.


2007.06.27

An IDA engineer visited the station and restored telemetry and communication between the
ISP and the DAS.  There is a faulty Amplifier Filter Unit at the station that will
be replaced to bring the station back online. 


2007.03.29

The GPS clock is back to a locked state as of about day 088-19:30.


2007.03.08

The GPS clock is in an unlocked state since day 067-12:16.


2006.08.19

The station is down as of about day 231-08:02 (Aug.19) due to communication
problems between the DAS and the ISP.


2006.08.11

The station is back up after an IDA engineer visited the site and repaired 
the station uplink and power converter, and replaced circuit boards in the DAS.  
The STS-1 sensor is disconnected and is being shipped to UCSD for testing and repair.

2006.03.27

The station is down due to communication problems between the ISP and DAS.


2006.03.20

The vertical channels from the STS-1 seismometer are out as of 059-07:16
due to problems with the seismometer that are yet to be determined.

2005.01.27

The wdo channel data is normal again after an IDA engineer visited the 
station and replaced the microbarometer. During this visit the UPS batteries,
and ISP were also replaced. 

2004.09.20

There is a gap in data from Sept. 3 to Sept. 7 due to problems with the
ISP. Data acquisition resumed when the station operator rebooted the ISP.
There are still problems with the ISP display and a replacement is being
prepared to send to the station. The wdo channel data is incorrect for
reasons yet to be determined.

2004.08.19

The station's GPS clock resumed normal status on 8/10/2004 (2004223).


2004.08.09

There is a problem with the station's GPS clock as of 2004210-03:35.  


2004.05.18

Telemetry data are resumed after station was rebooted on 2004139-14:24.


2003.08.13

Telemetry down since 213-12:31 (August 1,2003). Station remains operational and
station operator requested to reboot the ISP.


2003.01.08

An IDA engineer visited the station to replace the EPROMs and install
an STS1 east-west sensor.


2002.07.10

Telemetry problem has been resolved as of 2002:176 (June 25, 2002).


2002.04.22

There is currently no STS1-EW sensor at the station.  There has been
no telemetry for 10 days.

2008.08.20

The station was down from about day 215-15:40 to 232-05:02 due to communication
problems between the DAS and the ISP.


2007.11.07

The North-South channels from the STS-1 seismometer are non-seismic as of  
about day 2007,305 for reasons yet to be determined.

2006.12.06

Data acquisition resumed at about 340-04:39 after the station operator
repaired the uplink communication problem.


2006.11.26

The station is down due since day 330-23:16 to communication problems 
between the DAS and the ISP. The station operator is checking the uplink
and equipment in the vault.  

2004.07.07

Station is back up.


2004.06.14

Station operator reported that a thunderstorm has damaged the link
between DAS and ISP. 


2003.08.28

Telemetry restored after station operator replaced GPS clock.


2003.07.31

Telemetry down since 184-03:37 (July 3,2003). Station operator notes
GPS receiver has broken.


2002.10.16

New EPROMs installed to correct DSP problem.


2002.08.20

Station problem has been resolved and is now operational.


2002.07.10

Station is down as of 2002-170 (June 19, 2002) due to lightning damage
to uplink converters.


2002.04.22

Station operating normally.  There are frequent data dropouts due to
shortcomings of the uplink cable.  The cable should be replaced during
the next site visit.

2008.06.30 

The station is back online after an IDA engineer visited the station and restored
power, replaced the ISP, and restored communication between the DAS and the ISP.


2008.03.25

The station is down due to power problems.  A visit by an IDA engineer is
planned to restore power to the station.


2008.02.09

The station was down from about day 2008,038 to 2008,040 due to a power problem.
Normal operation resumed after a reboot of the DAS.


2008.01.30

The station is back online as of about day 2008,030 after an IDA engineer restored
communication between the DAS and the ISP.


2008.01.23

The station is down again as of about day 2008,023 due to communication problems 
between the DAS and the ISP.  An IDA engineer is enroute to the station.

2008.01.19

The station is back online as of about day 2008,019-14:05 after the station operator 
cycled power to the DAS.


2007.11.30

The station is down as of about day 2007,334 due to communication problems between the
DAS and the ISP that are yet to be determined.

2007.10.24

The station is back online after an IDA engineer visited the station and replaced the 
DAS, and restored power to the VSAT system.


2007.07.20

The station is down as of about day 201-16:07 due to communication problems between
the ISP and the DAS that are yet to be determined.


2007.06.16

The DC-DC converter in the CMG-3T seismometer has been replaced and the short
period channels are seismic as of about day 167-12:43. 


2007.06.13

The station is back up after faulty solar batteries for the power system were 
replaced. 


2007.06.11

The station is down due to problems with the power system that are yet to be
determined.


2007.05.23

The short period channels for the CMG-3T seismometer are nonseismic as of about
day 143-18:21 for reasons yet to be determined.


2007.03.13

IDA engineers visited the station and replaced the KS-54000 and CMG-3T seismometers,
and the FBA-23 strong motion sensor. All channels were restored except the vertical
channels from the KS-54000 seismometer due to problems with the sensor possibly 
caused during shipping. 

2007.02.03

The station was down from day 033-08:15 to 034-09:34 due to problems with the 
ISP. Normal data acquisition resumed after the station computer was rebooted.


2006.08.24

Data quality for all channels from the FBA-23 sensor is poor for
reasons yet to be determined.

2006.02.05

The station was down from day 30 (Jan.30) to day 35 (Feb.5) due
to problems with the digitizer. The station is back up after
the station operator removed faulty circuit boards in the DAS. 

2006.01.29

Data quality for the CMG3-T sensor's East-West channel is poor due to a faulty 
sensor. 

2005.09.22

The broadband channels for the KS-54000 seismometer are out as of
261-01:45 (Sept.18) for reasons yet to be determined.


2004.07.24

An IDA engineer visited the station to correct the channel swapping
problem and replace its GPS clock.


2004.06.16

Telemetry data showed GPS clock had problem since 2004:167-18:12.
Station operator has been notified.


2004.05.28

Two of the broadband channels, BBE and BBN, have been swapped since
2004139.  This problem has been corrected during processing stage.
Telemetry broadband BBE and BBN data prior to 2004148-19:00 were
having incorrected channels assigned.


2004.05.18

Station is up after an IDA engineer visited the site to replace the
damaged Vsat equipment, solar batteries and failed 24 bit A/D boards.  
Telemetry is also up after the satellite link is repaired.


2003.09.08

Station down. Station operator reports no data from DAS and no clock (9/3).
Telemetry still down as well.


2003.07.07

Telemetry down.  There are numerous gaps in NRTS data since 2003.06.19. 


2003.06.20

The station operator performed the procedure to center the CMG3-T seismometer
masses, but there is no indication on the CMG3-T control box that the masses 
are actually recentered.  The horizontal channels remain out of range.



2003.06.11

The CMG-3T seismometer horizontal channels are dead, bh2 data are clipped
around 2003:152-08:00, bh1 channel on the NRTS loop is dead around
2003:157-16:19. 


2003.05.12

Field engineer replaced solar panels, updated EPROMS, restored telemetry.
A fence was erected around the site to increase security.
Station operational as of 2003.05.12. 


2002.11.15

The operator phoned to report that thieves had stolen 12 solar panels from the
station's electrical power system.  It is not known if these were taken from
the telemetry subsystem, the elements powering IDA data acquisition equipment,
or those powering the JPL/UNAVCO data acquisition system.  IDA is attempting
to obtain more details.


2002.09.04
The satellite telemetry circuit failed on this date.  IDA engineers are attempting
to identify which parts have failed and develop a strategy to restore data flow.

2002.08.19

The GPS clock was replaced and is operating correctly.

2002.07.10

East-West channels from the KS-54000 are down as of 2002:102-09:00 (April 12, 2002)
along with the vertical channels.  

2002.06.13

The GPS clock is now not working properly.

2002.04.22

Station is operating without input from the KS-54000 vertical channels.

2009.05.08

The station was down from about day 2009,123 to 2009,128 due to communication problems between the
DAS and ARS.  The station came back on-line after the station operator cycled power to the DAS.


2009.04.21

The station is back on-line as of about day 2009,111-10:38 after the station operator
cycled power to the DAS.


2009.04.17

The station is down as of about day 2009,107 due to problems with the DAS.
The station operator is requested to cycle power to the DAS.


2007.06.14

The station is back online as of about day 165-09:02 after the station operator
restored power to the station and restored communication betweeen the DAS and the ISP. 


2007.05.30

The station is down as of about day 150-12:54 due to problems with the digitizer 
that are yet to be determined.


2007.05.07

The station is back online as of about day 127-16:15 after an IDA engineer visited 
the station and replaced the ARS, DAS, GPS clock, and main power supply. These 
equipment were damaged due to a voltage surge suspected to be caused by lightning. 


2007.03.29

The station is down again (as of about day 075) due to power problems.  The station
operator visited the station and reports that fuses were blown in the power supply 
and digitizer, and that the digitizer boards have been damaged. 


2007.03.16

The station operator restored power to the station and data acquisition has resumed.
However, the GPS clock is malfunctioning and the station operator has been 
requested to cycle power to the GPS clock. 


2007.03.04

The station is down as of about day 063-06:01.  The station operator reports
that recently there were several severe electrical storms in the area. 


2007.02.27

The station is online as of about day 058-07:09 after the station operator 
power cycled the digitizer.


2007.02.17

The station is down as of day 048-20:16 due to problems with the DAS that are
yet to be determined.

2006.11.20

The station was down from 324-22:01 to 332-10:34 due to problems with the DAS.
Data acquisition resumed after the station operator cycled power to the DAS.

2006.09.27

The station is up as of about day 270-06:46 after the station operator
replaced a fuse in the power supply board in the digitizer.  The North-
South and East-West channels for the KS-54000 seismometers are out due to
faulty circuit boards in the DAS. 


2006.08.25

The station is down as of day 237-20:10 due to problems with the DAS that are
yet to be determined. 


2006.03.29

The station is back up as of about 2006:088-07:28 (Mar. 28) after the station
operator power cycled the DAS. 


2006.03.20 

The station is down due to problems with the DAS that are yet to be determined.


2006.02.27

The vertical channels for the KS-54000 seismometer are out due to a faulty RT303
circuit board in the DAS. 


2005.08.29

The station is up after an IDA engineer visited the site and replaced the UPS, ISP, and
CPU board in the DAS, and restored power to the station.


2005.05.24

The station is down as of May 12.  The station operator reported the station being burgled, has notified
local authorities and and is checking station equipment for damages and theft.


2005.04.06

The station is back up after the station operator replaced a 
blown fuse.

2005.04.05

The station is down due to power problems following a thunderstorm. 

2005.03.08

The station was upgraded by an IDA engineer.  Upgrades included a new 
telemetry VSAT system, NRTS computer, and station power supply.

 
2004.10.03

Station is back up after an IDA engineer replaced the CPU, COM, DSP, 
power supply, and 24-bit A/D boards in the DAS.
Data acquisition for the BB* channels resumed day 273-16:25(Sept. 29).
Telemetry is down for reasons yet to be determined.  

2004.08.23

The 24-bit A/D boards (BB* channels) failed as of day 212 (July 30).  
Telemetered data is coming in but only for 16-bit data.  
The DAS is frequently rebooting for reasons yet to be determined.

2004.07.12

No telemetry data are available for the past 7 days and data logger
is complaining "No data from DAS".  Station operator has been asked
to power cycle the digitizer.


2004.06.21

Station is up after the station operator power cycled the digitizer.


2004.06.14

Station is down.  Failure of the digitizer is suspected.  Station
operator has been notified.


2004.05.27

Electricity has been restored at the station.


2004.05.21

Station lost power.  Station operator is working on the problem.


2004.05.17

The station operator replaced the faulty CPU/COM circuit boards and
DAT tape drive and power cycled the digitizer.  Data from BBE and BBZ
are restored since 2004:137-09:00.


2004.05.08

Two of the 24 bit A/D boards (BBE and BBZ) are not acquiring data since
2004:129-08:20.  Station operator has been notified.


2003.11.19

Vertical channels from the KS-54000 sensor are back on scale after the 
station operator swapped RT303 cards from the channel 1 (bhn) to the 
channel 0 (bhz) slot in the digitizer. Data restored as of
2003:322-05:56 (11/18).


2003.10.20

Station operator reset the DAS (10/15). However, vertical channels 
from the KS-54000 sensor remain clipped.

2003.10.06

Vertical channels from the KS-54000 sensor are clipped.  The station
operator requested to reset the DAS (10/02).


2003.08.28

Connection to the station reestablished with NRTS data coverage beginning
day 199 (July 18,2003). 


2003.07.21

Telemetry down as of 2003:190-20:14 (July 9, 2003).  Currently investigating
internet service connection to the station.


2003.06.17

DAT drive failed 2003.06.16, operator requested to change drive within the next
couple of days.


2003.05.23

BBZ channels out as of station volume 419 (2003:122-04:33:11), DAS rebooted
2003:143-17:57:21, BBZ channels restored. 


2003.05.16

BBZ channels back @ 2003:114-19:22 (April 24,2003), after DAS reset.


2003.03.24

The output of the KS-54000 vertical sensor is no longer in the operating range
of the DAS following a power reset of the system.  The problem is being addressed
as a maintenance issue.


2003.02.11

The station was restored to full operation during a maintenance visit by two
IDA engineers.  Among the tasks accomplished during this visit were:

  1. The KS-54000 was reinstalled in sand and a problem with data from the EW sensor
     fixed by replacing the DAS' EW A2D card.
  2. The CMG-3T was replaced.
  3. The telemetry connection was restored by replacing the modem and by requesting
     the local telephone company to repair the line to the station's equipment.

2003.01.22

New EPROMs installed to correct DSP problem. 


2002.04.22

Data from the KS-54000 EW sensor and CMG-3T EW sensor are non-seismic.
A site visit is required to address these problems.

Telemetry is down.  A replacement modem will be shipped to the station shortly.

2009.03.23

The triggered channels from the Episensor strong motion sensor are non-seismic
for reasons yet to be determined.

2008.05.13

The station is online again after an IDA engineer visited the station and
fixed problems with the power system. The broadband seismometer data
are seismic again.

2008.04.20

An IDA engineer visited the station and restored data acquisition and
established a telemetry link to the station. However, the station
remains down due to problems with the KS-54000 seismometer.


2008.04.14

The station remains down.  An IDA engineer is on-site and investigating  
a problem with the uplink cables and the digitizer.


2007.07.09

The station is down as of about day 190-00:59 due to communication problems between
the DAS and the ISP that are yet to be determined.

2007.06.16

The station is up after an IDA engineer restored power and upgraded the station
to a MK8 system.  Equipment including a new ISP, power supply, and microbarometer
were installed. 


2005.01.05

Station is down due to problems with the Main Power Supply.


2004.08.23

Station was down for time period yet to be determined due to power surge which
damaged the remote power supply.  Station operable again after an IDA engineer
fixed the power supply, replaced circuit boards and DAT drive.


2003.11.10

Station is back up after station operator installed new ARS and DAT drive on 
2003.11.04.


2003.07.14

Station is down due to problems with the datalogger.
The ARS is not taking tapes.


2003.06.05

Station up, data recording restored after clock replaced.


2003.05.09

Another replacement power supply installed. Problems with external clock.


2003.03.10

Replacement power supply delivered 2003.01.29, installed and immediately
failed.


2003.01.16

The station operator reports the main power supply has failed.  A spare power
supply is being prepared for shipment to Suva for installation by the FEA.


2002.07.24

The RT303 card recording data from the KS54000 vertical channel is behaving
anomalously.


2002.06.17

Station operation is restored after IDA engineers installed a new wellhead
cover and re-installed the data acquisition system.


2002.06.06

New EPROMs installed to correct DSP problem.


2002.04.22

Station down since 2002.02.24 for rebuilding of the wellhead pad.  KS-54000
vertical channels now behaving normally.  A field trip to re-install the
acquisition system will take place shortly.

2009.05.02

The station is down as of about day 2009,123-10:26 due to damage to
the DAS and  ARS caused by lightning.


2009.01.06

The high gain short period channels from the Trillium seismometer
were saturated from about day 2009,004-22:50 to 2009,006-18:00. 


2008.11.07

The station was down from about day 2008,308 to 2008,312 due to damage
to a cable between the ARS and the DAS caused by construction near the
station.


2008.10.09

The station is back online as of about day 2008,282-06:23 after the
short period channels from the Trillium seismometer came back into
normal operating range.

2008.09.26

The station is down.  The short period channels from the Trillium
seismometer are saturated as of about day 2008,263. An IDA engineer 
will give the station operator directions to adjust the sensor.


2008.07.07

The station is back on-line as of about day 2008,186 after
the station operator replaced the ISP.



2008.07.01

The station is down as of about day 2008,179 due to problems
with the ISP.


2008.05.26

The station is back online after the station operator installed 
a new Trillium seismometer shipped from UCSD.


2006.12.10

The station is down as of about 344-04:55 due to a thunderstorm
that damaged equipment including the DAS, ARS, and ISP.


2005.12.21

The station is back up as of day 355 (Dec.21).


2005.12.16

The station is down for reasons yet to be determined.


2005.12.05

The station is back up and data acquisition resumed. 


2005.12.03

The station is down as of day 335 (Dec.1) due to communication problems
between the DAS and the ISP.


2005.03.07

The station is up since day 033. The vertical and E-W channels for 
the KS-54000 seismometer are out.


2004.12.20

The station is down due to problems with the DAS that are yet to be
determined.

2004.06.08

Station operator reported that DAT tape drive failed to record data.


2004.06.01

The one remaining 24-bit channel has been acquring data from the N-S
sensor but was wrongly assigned to BBE.  This problem occured roughly
around 2004044 and has been corrected during processing stage.
Telemetry broadband data between 2004044 to 2004153 stay unchanged,
ie they are assigned to incorrected channels BBE.


2004.03.08

Station is back up. Station operator requested to reboot the DAS after
restoring proper date/time for the station processor. 


2004.02.17

Station is down as of 2004:040-10:24 (Feb.9) due to problems with the DAS.


2003.05.25

Station operator notes failed RT303 card for the vertical channels.


2002.09.06

New EPROMs installed to correct DSP problem.


2002.04.22

The channels from the KS-54000 vertical are non-seismic.  Tape data are currently not
available.

2009.11.03

The station was down from day 2009,305-05:35 to 2009,307-12:51 due to a power outage.
Data acquisition resumed once power was restored and the station computer rebooted. 


2009.10.30

The station is back online as of day 2009,303 after the station operator replaced 
the digitizer.


2009.09.30

The station is down again since day 2009,273-14:20 due to problems with the digitizer.


2009.09.28

The station is back on-line as of day 2009,271.  However, problems with the digitizer are
intermittent and a new digitizer is being shipped to the station.  

2009.09.24

The station is down as of day 2009,265-04:22 due to problems with the digitizer.  A new
digitizer is being prepared to ship to the station.


2009.08.31

The station is currently up. However, problems persist with the UPS and digitizer following
the site visit by an IDA engineer.  Plans for a replacement digitizer are being prepared.

2009.08.19

The station is back on-line as of day 2009,231 after an IDA engineer visited the station 
and replaced the power supply and CPU stack for the DAS. The engineer is currently onsite
troubleshooting problems with the DAS. 

2009.08.05

The station is down as of day 2009,217 due to problems with the power system and the DAS.

2009.06.15

All channels from the STS-2 seismometer are non-seismic since about day 2009,167.
Testing is currently underway to investigate excessive spiking on all horizontal
channels at the station.


2009.04.18

The horizontal channels from both the STS-1 and STS-2 seismometers are spiking since about
day 2009,108 for reasons yet to be determined.


2007.11.05

The station is back online after an IDA engineer visited the station and reconfigured the 
GPS clock.


2007.05.01

The station is down due to problems with the GPS clock and the DAS that are yet to be determined.


2007.01.18

The GPS clock went back into a locked state and normal operation resumed as of day 018-23:37,
with no loss of data.


2006.10.21

The GPS clock failed around day 294-11:48.  A new clock is being prepared to 
send to the station.


2006.06.13

The data acquisition system has been upgraded to a MK8 system.  New equipment
including an STS-2 seismometer, strong motion episensor, ISP, GPS clock,
power supplies, radios, and a Paroscientific microbarograph have been installed. 


2006.04.07

The station is back up after the station operator repaired the power supply.


2006.03.27

The station is down due to failure of the remote power supply.  
A station visit is planned to restore operation and upgrade the station.

2005.04.11

The station is up as of 4/09 after an IDA engineer visit to the site to 
repair the station.  The problem was corrected by replacing a DC/DC 
converter for the DAS power supply. 


2005.03.28

The station is down as of 3/21 due to problems with the DAS.


2005.02.18

An IDA engineer visited the site and replaced the GPS clock and DAT drive (02/17/05).


2005.01.05

Station operator reports GPS clock failure (01/03/05). 
Station was down from day 12/08/04 to 12/13/04 due to problems with the DAS.
Data acquisition resumed after station operator replaced circuit boards in the
DAS and ARS.

2004.06.01

Telemetry data are avilable after the telemetry relay housing has
been rebuilt.


2004.04.23

Operator reports radios used to telemeter data have been vandalized and will
require at least one week to repair.


2004.02.17

Telemetry restored after station operator installed new radios.


2003.09.23

Station operable again after tape drive and power supply board were fixed on
August 8th. 

2003.01.22

Operator reports telemetry relay station has been vandalized.  Telemetry to be
down indefinitely.

2002.07.22

New EPROMs installed to correct DSP problem.


2002.04.22

Station operating normally.

On 2002.02.28, the operator repaired the telemetry link to the station using
spare parts on site.  Thieves had stolen the spread spectrum radio and buffering
hardware from station five days earlier.

2002.10.07

Equipment for upgrading the station will be shipped soon.


2002.04.22

Station is down pending resolution of customs issues.

2009.03.24

The vertical channels from the STS-1 seismometer were non-seismic from about day
2009,082-2010 to 2009,083-0828 due to a damaged circuit board in the DAS.

2008.12.20

The north-south BHN-10 channel from the CMG-3T seismometer was restored
about day 2008,355.

2008.11.23

The north-south BHN-10 channel from the CMG-3T seismometer is non-seismic
as of about day 2008,328 for reasons yet to be determined.


2008.05.30

The north-south BHN-10 channel from the CMG-3T seismometer was non-seismic
from about day 2008,112-0940 to 2008,119-0852 for reasons yet to be determined.


2007.10.09

The East-West channels from the FBA-23 accelerometer are non-seismic
as of about day 2007,282 for reasons yet to be determined.


2007.02.06

The North-South high gain short period channel was restored after the
station operator recentered the masses for the CMG-3T seismometer.


2007.01.17

The North-South high gain short period channel (SHN) is nonseismic
as of day 017-19:10 for reasons yet to be determined.

2005.12.26

The East-West high gain short period channel (SHE) is out as of
day 360 (Dec.26) for reasons yet to be determined.


2005.11.25

An IDA engineer visited the station to upgrade the ISP, upgrade
the hub computer systems, and train station operators on the 
configuration, installation, and operation of new systems for use
at Russian IDA stations.


2004.07.11

The microbarometer data are back to normal.


2004.07.03

The microbarometer data are flatlined.  Investigation is in progress.


2003.01.05

Station operator reports replacing DSP board (12/24).


2002.04.22

Station is operating normally.

2009.05.01

An IDA engineer visited the station to upgrade the station computer, reconfigure the 
telemetry link to the station, and install an iboot network power switch.  

2009.03.29

The station is back on-line as of about day 2009,088-0343.

2009.03.22

The station is down again as of about day 2009,081 due to communication problems between the DAS
and the ISP. 


2009.03.12

Data acquisition resumed about day 2009,071 after the station operator restored communication
between the DAS and the ISP.

2009.02.08

The station is down as of about day 2009,039 due to problems with the DAS that are yet to be 
determined.


2009.02.06

The station is back online as of about day 2009,037 after the station operator replaced the uplink
between the DAS and the ISP, and the DAS.


2008.11.08

The station is down as of about day 2008,313 due to problems with the DAS.
The station operator has been requested to cycle power to the DAS.


2008.10.27

The B*Z-10 short period channel from the CMG-3T seismometer has drifted
out of normal operating range as of about day 2008,300-09:00.  The station
operator is being requested to recenter the masses for the CMG-3T sensor.


2008.09.26

The B*2-10 short period channel from the CMG-3T seismometer has drifted 
out of normal operating range as of about day 2008,269-07:07.


2008.08.13

The station was down from about day 2008,225-17:05 to 2008,227-09:58 due to communication problems
between the DAS and the ISP.  Data acquisition was restored after the station operator cycled power
to the DAS.

2008.08.05

The station was down from about day 2008,215 to 2008,219 due to communication problems between the DAS
and the ISP.  Data acquisition was restored after the station operator cycled power to the DAS.


2008.07.18

The station experienced several data gaps from about day 2008,191 to 2008,193 due to lightning damaging
the power supply and modem. Normal data acquisition resumed about day 2008,193. 


2008.07.01

The station is back online as of about day 2008,178 after the station 
operator restored power and the telemetry link.


2008.06.16

The station is down as of about day 2008,164 due to power problems.


2007.12.08

An IDA engineer visited the station and replaced the CMG-3T sensor, and 
installed an episensor, and an RT-593 circuit board in the DAS.  Both the 
vertical and horizontal channels from the KS-54000 and CMG-3T sensors have
been restored.

2007.10.13

The station operator removed a faulty RT-303 board for the vertical channels
from the KS-54000 seismometer. This resolved a problem of excessive gapping
of all channel data caused by the faulty circuit board.

2007.01.05

The station operator removed the faulty RT-303 board for the North-South 
channels from the KS-54000 seismometer.  This resolved the problem of 
excessive gapping of all channel data caused by this faulty circuit board.


2006.12.22

The North-South channels for the KS-54000 seismometer are nonseismic as of 
about day 354-14:20 due to a faulty RT-303 card in the DAS.


2005.10.31

The station is up after an IDA engineer restored power to the station (10/31).
The horizontal channels from the CMG3-T seismometer and FBA-23 accelerometer
remain out due to bad sensors.


2005.09.22

The station is down due to a power problem day 255-07:56 (Sept.12). 


2005.03.28

Station is back up after station operator replaced XCOM board in the DAS.
Vertical and horizontal channels from the Guralp CMG3-T seismometer and FBA-23
accelerometer are out for reasons yet to be determined.


2005.02.22

Station is down as of 02/19/05 due to communication problems
between the DAS and ISP.


2004.12.20

The station is back up after station operator reset the DAS (349-10:01).
There are intermittent gaps in recent data due to power outages at the station.
The north-south channels from the Guralp CMG3-T seismometer are saturated.


2004.12.13

The station is down as of day 340-20:57 (Dec.5). Station operator requested
to reset the DAS.   


2004.09.20

There is a data gap from Aug.29 to Sept.2 due to a power failure.


2004.07.16

Station is up after the station operator reset the solar power system.


2004.07.13

Station is down due to the failure of its solar power system.


2004.07.09

The NS channels from CMG-3T contain seismic data again since 2004191-07:50.


2004.06.21

The NS channels from CMG-3T are flatlined.  Station operator has been
asked to recenter its mass position.


2004.06.01

The faulty GPS clock has been replaced.


2004.05.01

Telemetry data showed GPS clock problem since 2004:122-14:00.
Station operator has been notified.


2003.05.10

Communication between the digitizer and ISP restored.  

  
2003.05.09

The ISP unable to establish decent communication with the digitizer.

2003.05.05

Data acquisition and connection to the station re-established.


2003.05.02

Microbarograph disconnected due to interference with the ISP operator interface.
Microbarograph to be fixed on next visit.

2003.04.28

Lost connection to station.


2003.03.05

An IDA engineer visited the station to perform routine maintenance tasks.  These
included:

  1. Install a new solar power system.  Mains power to the station has proven unreliable
     and a source of long period noise.  It is hoped the new solar array will stabilize the
     station's performance.
  2. The air conditioner had failed and was taken to a dealership for repair.
  3. Two failed RT303 cards in the DAS were replaced.


2002.12.05

Data acquisition was restored following reset of DAS.


2002.12.03

Lost data acquisition from DAS.


2002.07.10

CMG data restored after site visit on 2002171-2002180 (June 20-29, 2002)
No data from vertical channel of KS-54000.

2002.06.22

New EPROMs installed to correct DSP problem.

2002.04.22

The EW channels from the CMG-3T sensor are non-seismic.  The telemetry
circuit to the data acquisition system is currently down.  Our host
institution is working with the local Internet service provider to
restore service.

2008.12.04

The vertical and horizontal channels from the Episensor accelerometer 
were non-seismic from about day 2008,142 to 2008,339 due to a faulty sensor.
The channels were restored after an IDA engineer visited the station and 
replaced the sensor.


2008.04.29

IDA station PFO has been upgraded to a Quanterra Q330HR system.   


2007.11.20

An IDA engineer visited the station and replaced the STS-2 sensor on day 2007,324 
(Nov. 20, 2007).

2006.12.08

Data for the episensor strong motion detector are seismic again as of about
day 342-23:30 after an IDA engineer reconfigured the cabling to the episensor.


2006.11.01

An IDA engineer visited the site and replaced the Power Supply in the
recording room.

2006.10.12

The broadband channels from the STS-1 sensor had excessive
noise above 1 Hz from about day 270 - 285 (9/27 to 10/12) period due to
faulty grounding of station equipment. The problem was resolved after an
IDA engineer visited the station and reconfigured the Main power supply.


2006.09.01

The short period channels from the STS-2 sensor had excessive background noise from day
194 to 244 (July 13 - Sept.1).

2006.07.13

Data quality for all channels from the episensor strong motion detector is poor for 
reasons yet to be determined.


2006.07.13

IDA station PFO has been upgraded and moved to a new vault.  The MK-8 system includes a
new Episensor strong motion detector and microbarometer in addition to STS-1 and
STS-2 sensors.  Data acquisition for PFO switched from the old digitizer to the 
new one at about 194-00:00. 


2006.01.30

The microbarometer was replaced by an IDA engineer and the wdi channel was restored.


2006.01.12

The wdi channel is out due to a faulty microbarometer.


2005.10.31

Telemetry to the station was down day 289-19:13 (Oct.16) to day 303. 
When telemetry was restored normal data acquisition resumed.


2005.01.05

The East-West channels from the STS-1 sensor are normal as of day 352 (12/17/04) after
the STS-1 sensor's masses were recentered.
The station was down from day 12/30/04 to 01/02/05 after the station lost power during
a storm.  The station came back up after an IDA engineer power cycled the DAS. 


2004.12.13

The East-West channels from the STS-1 sensor are saturated because the sensor's
masses need to be recentered (12/10/2004).  


2004.08.23

Station is up as of (8/20/2004) after IDA engineers replaced ethernet switches
in the vault and recording trailer, which were damaged by the lightning strike.
There is no data for the time period from day 226-19:00 to 233-17:12.

2004.08.19

Station experienced lightning strike on 8/13/2004.  Telemetry down and station
visit scheduled to assess station status. 


2004.07.14

The mass recentering seems to have addressed the STS2 data problem.


2004.07.06

The amplitudes of STS2 data start to look anomalous - perhaps due to
mass position problem.


2003.08.27

Station operational again after an IDA engineer replaced the ethernet switch.

2003.08.23

Station down due to a bad ethernet switch. Network connection to the station's
digitizer was lost as of 2003:235-23:47 (August 23,2003).


2003.04.24

New main power supply installed.


2003.02.27

New station processor installed.


2002.12.19

An IDA engineer visited the station today to calibrate the FBA and reset the
free periods of the STS1 sensors.


2002.04.24

The station is operating normally.  Today the data stream from the vertical
channel of FBA was repaired.

2008.11.27 

The station is back up as of about day 2008,332 after IDA
engineers visited the station and upgraded the data acquisition
system to a Quanterra Q330HR system. 


2007.11.09

The station is down due to problems with the ARS that are
yet to be determined.


2007.09.27

The station is back online as of about day 2007,192. However,
there are several large gaps in the data until day 2007,257. 


2007.06.29

The station is down as of about day 2007,180 due to problems
with the ISP that are yet to be determined. 


2007.04.23

The station came back online after the link between the 
station and the gateway computer was completed. 
Data acquisition began about day 113-20:49. 


2007.03.11

An IDA engineer visited the station and replaced the ISP, 
and installed a gateway communication computer and routers.
Data acquisition will resume after completion of a leased 
line between the station and gateway computer.

2006.11.27

IDA station RAYN is down due to problems with the ISP. 
A new computer is being prepared for shipment to the station.

2006.01.23

The station is back up after an IDA engineer visited
the station and replaced a blown fuse in the DAS, and the 
station's GPS clock.  
The broadband channels from the KS-54000 seismometer
remain out due to faulty circuit boards in the DAS, which
were pulled out and will need to be replaced. The vertical
channels for the KS-54000 were intermittently nonseismic
since day 079 (Mar.19,2005). 

2005.12.05

The station is down due to problems with the DAS
that are yet to be determined.


2005.09.06

The station is up after the station operator replaced
the batteries for the solar power system. 


2005.07.18

The station is down due to power problems.


2004.08.09

Station operating normally.


2003.02.19

Dual DAT drive and new hard drives shipped.


2002.04.22

Station operating normally.  Telemetry is down.

2009.10.08

The station was down from day 2009,278-20:54 to 2009,281-00:27 due to a power
outage caused by a storm. Data acquisition resumed when power was restored.


2009.10.01

The station is back on-line as of day 2009,274-00:04 after the station operator
replaced the power inverter and GPS clock. All channels from the STS-2 
remain non-seismic.


2009.09.08

The station is down as of day 2009,250 (Sept.7) due to problems with power
equipment at the station.


2009.06.20

The station is back on-line after the GPS clock began to function normally. 
However, all channels from the STS-2 sensor are currently non-seismic.


2009.06.09

The station operator reports cycling power to the GPS clock.  The GPS clock
was found to be faulty, so a replacement is being prepared for shipment.


2009.06.05

The station operator reports replacing the power supply.  However, there are
problems with the GPS clock that are being investigated, and the station
remains down.


2009.05.19

The main power supply has failed. A new power supply is being prepared to be 
sent to the station.

2009.05.12

The station experienced intermittent power problems from about day 2009,130 to 2009,132.
The problem was resolved after the station operator replaced some damaged
connectors to the power system. 


2009.04.27

The North-South channels from the STS-1 are seismic again as of about
day 2009,117-01:10 after the station operator replaced the feedback 
box for the STS-1.  


2008.11.12

The horizontal and vertical channels from the STS-1 and FBA-23 sensors were
non-seismic from about day 2008,304-10:56 to 2008,305-11:00 due to problems
with the sensors. The station operator swapped cables between the sensors
on day 2008,316 and then back on day 2008,317 after the North-South sensor
was determined to be faulty. Normal data acquisition has resumed for all
except the North-South channels from the STS-1. Data were corrected for
appropriate channels during the time the cables were swapped.


2008.10.30

The North-South channels from the STS-1 seismometer are non-seismic for reasons
yet to be determined.  A faulty sensor is suspected, and the station operator
has been requested to test by swapping cables between sensors.

2008.10.17

The station is back on-line as of about day 2008,290 after the station operator
cycled power to the GPS clock. 


2008.10.13

The station is down due as of about day 2008,285 due to problems with the GPS 
clock.  

2007.05.28

Data quality for all channels from the STS-2 seismometer improved after a DAS
reboot at about day 148-01:21.


2007.05.13

Data quality for all channels from the STS-2 seismometer is poor as of about
day 133-19:41 for reasons relating to the power system. 


2007.03.06

Data quality for all channels from the STS-2 seismometer was poor from about
day 065-03:58 to 066-15:31 for reasons relating to the power system. 


2007.02.27

Data quality for all channels from the STS-2 seismometer improved after a DAS
reboot at about day 058-16:21.


2007.02.08

Data quality for all channels from the STS-2 seimometer is poor as of about
day 039-00:59 for reasons relating to the power system.


2007.02.02

The station was down from about day 034-20:41 to 036-16:34 due to a power outage.
Power was restored and data acquisition resumed after the station operator reset 
the DAS.

2007.01.25

Data quality for all channels from the STS-2 seismometer improved after a DAS
reboot at day 025-07:36. 


2007.01.19

Data quality for all channels from the STS-2 is poor again after the sensor began
malfunctioning on day 019-13:38.


2006.12.29

Data quality for all channels from the STS-2 seismometer improved after the station
operator switched a breaker and restored power to the station following a power
outage.  There is a gap in data from 2006:362-21:44 to 2006:363-15:40.


2006.12.07

Data quality for all channels from the STS-2 is poor after the sensor began
malfunctioning on day 341-17:57.


2006.11.05

The station was down on day 309 (Nov.5) following a power outage due to problems with the DAS.
Data acquisition resumed after the station operator cycled power to the DAS. 


2004.09.20

There is a gap in data from Aug.24 to Aug.25 and Aug.27 to Sept.1 due to power failures.


2004.07.08

Station is up after the power is restored.


2004.07.06

Station is down due to a severe storm on the island.  The repair of
power lines is in progress.


2003.06.05

Station operator replaced hub, telemetry restored.


2003.05.12

Known failure of hub.  Telemetry down since 2003.05.03. Replacement parts 
being sent to station.


2003.02.01

Air conditioning installed.


2002.09.20

The data acquisition system has been upgraded.  Additional sensors have
been added including STS2 and FBA-23 seismometers and a Paroscientific
microbarograph.


2002.04.22

Station operating normally.  Upgrade pending.

2009.08.05

The station was down from day 2009,209-05:05 to 2009,217-12:38 due to problems with 
the power supply.  The station is currently up, but the problems with power are
suspected to persist.


2009.07.10

The station operator visited the station and reported the station is operating normally.
Telemetry to the station is down, and the station operator is contacting the service  
provider.


2009.06.29

The station is down as of about day 2009,180 for reasons yet to be determined.
A power outage at the station is suspected. 

2008.11.24

The station is up as of about day 2008,329 after the station operator replaced the GPS clock.

2008.10.20

The station is down due to power problems, and problems with the GPS clock.

2008.10.06

The station is currently up. However, there are still problems with power to the station.

2008.09.29

The station is down due to persistant power problems.

2008.09.17

The station is back on-line as of about day 2008,257 after the station operator restored 
communication with the station computer. 


2008.09.09

The station is down due to problems with the power system.  


2008.09.02

The station is back online as of about day 2008,244 after an IDA engineer visited the station and 
fixed problems with the ISP.  However, persistant power problems remain at the station. 


2008.08.18

The station is down as of about day 2008,203 due to problems with the ISP.
A replacement ISP has been shipped to the station from UCSD.


2008.06.02

The station is back online after IDA engineers visited the station and fixed the 
power system, installed an new ISP, and restored telemetry to the station.


2007.06.30

An IDA engineer visited the station and retored power and investigated
the status of equipment.  There is a faulty ISP that will be replaced
soon to bring the station back online. 


2005.02.28

Station is down due to problems with power to the station. The solar 
batteries are depleted. 


2004.08.09

Station is up (as of July 17) after IDA engineer replaced faulty XCOMM and
RT303 boards in the DAS, and modems.  Telemetry restored after station 
operator rebooted the ISP.   

2004.06.08

Station is down due to communication problems between the DAS and ISP.


2004.05.06

GPS clock works normally since 2004:127-11:30.


2004.04.27

Telemetry data showed GPS clock problem since 2004:118-17:21.


2004.03.11

Station is back up after an IDA engineer reconfigured the connection between
the DAS, station processor, and GPS clock.  

2003.12.01

Station is down (11/27) due to problems with the DAS and external clock.
There are frequent data gaps due to a RT303 board failure for the BBZ channels. 
After the DAS was rebooted on 2003:331-17:09 (11/27) there were numerous
error messages and then communication to the DAS was lost.

2003.11.24

Telemetry link restored on 11/17. NRTS data available as of
2003:321-17:59 (11/17). 


2003.09.08

Telemetry down as of 2003:231-06:24 (Aug. 19), however, station remains
operational.


2003.05.27

Telemetry restored during visit by an IDA engineer. Problem resolved after a
cross cable was connected to the radio at the gateway by station operators.
During visit an IDA engineer restored the gateway hard drive, upgraded DAS
firmware to DSPV777, and replaced the digitizer's RT303 card.


2002.09.04

Recording problem corrected by removing faulty RT303 card.  Station
operational with two 24 bit channels.  Telemetry problems persist.
EPROMS replaced 2002.09.03.


2002.08.20

Station is down due to problems with the DAS.  

2002.04.22

Station is operating normally, but the telemetry circuit is down.
New radio hardware at the repeater site is now in place but must be
reconfigured by the operator.

2009.06.06

The station is back on-line as of about day 2009,157 after the station operator
cycled power to the DAS.


2009.06.04

The station is down as of about day 2009,155-0944 due to communication problems 
between the DAS and the ARS. The station operator has been requested to cycle
power to the DAS.


2008.04.04

The vertical channels from the KS-54000 seismometer were non-seismic from about day
2008,088-12:27 to 2008,095-00:26.  The channels were restored after a warm reboot of
the DAS.

2008.04.02

IDA station SHEL was down from about day 2008,092-19:06 to 2008,093-18:35
due to a power outage caused by a storm.  Data acquisition was restored 
after the power was restored and the station operator cycled power to the DAS.


2007.08.23

The vertical channels from the KS-54000 seismometer were non-seismic
from day 2007,235-23:44 to 2007,242-15:31. The channels were restored
after a warm reset of the DAS.


2007.03.19

The vertical channels from the KS-54000 seismometer were non-seismic
from day 075-20:37 to 078-20:20. The channels were restored after a 
warm reset of the DAS.


2007.01.12

The vertical channels from the KS-54000 seismometer were non-seismic 
from day 009-20:42 to 012-20:33. The channels were restored after a 
warm reset of the DAS.

2006.11.09

IDA station SHEL was down from day 311-21:28 to 313-09:18 due
to a power failure.  When power was restored the vertical channels
from the KS-54000 seismometer were non-seismic until the DAS was
reset at 313-16:18.

2006.10.30

The BBZ channels from the KS-54000 seismometer were out from day
300-14:06 to day 303-22:54.  The vertical channels were restored
following a DAS reboot.


2006.04.24

The vertical channels for the KS-54000 seismometer are restored
after the digitizer was remotely reset.


2005.12.16

The vertical channels for the KS-54000 seismometer are out as of
day 308-17:41.


2005.06.07

Station operator reports replacing the ISP and modem (05/17).


2005.01.14

Station operator reports problems with tape drives.


2004.08.30

The vertical channels for the KS-54000 sensor are back (Aug 24) 
following DAS reboot.


2004.08.09

Station is up after station operator replaced DAS equipment(July 31).
The vertical channels are out again as of 2004:220-08:00 (Aug 7). 

2004.06.01

Station is down due to problems with DAS/ARS communication.


2004.05.03

The vertical channels for the KS-54000 sensor are back to normal following
DAS reboot around 2004:124-18:10.


2004.04.29

The vertical channels for the KS-54000 sensor are clipped since 2004:120-17:00.


2004.04.19

Telemetry restored after visit by station operator.


2003.07.21

The vertical channels for the KS-54000 sensor are back to normal following
DAS reboot.


2003.06.30

The latest tapes covering 2003:116-14:26 to 2003:144-15:42 indicate that the
vertical channels for the KS-54000 sensor are clipped again.  The station 
operator has been requested to reboot the DAS.


2003.03.02

The problem of the KS-54000 vertical channel clipping was resolved today
when the operator reseated the DAS A2D boards.


2002.11.11

Data from the KS-54000 vertical channels clipped today for reasons that
are not yet understood.


2002.10.05

EPROMs upgraded to v7.7 correcting DSP error.


2002.04.22

Station is operating normally.

2008.07.24

The wdo channel from the paroscientific microbarometer was not being acquired from about
day 2008,186 to 2008,204 due to communication problems between the microbarometer
and the digi.


2008.05.30

The wdo channel from the paroscientific microbarometer was not being acquired from about
day 2008,141 to 2008,149 following a power outage at the station. The channel was
restored after the digi was reset.


2008.02.20

The East-West channels from the STS-1 seismometer were nonseismic from about day 2008,048-05:03 
to 2008,051-19:31.  The channels were restored after a reset of the DAS.


2007.12.11

The station is back online as of about day 2007,345 after the station
operator cycled power to the GPS clock.


2007.12.07

The station is down as of about day 2007,341 due to problems with the
GPS clock that are yet to be determined.


2007.08.28

The station is back online as of about day 2007,240-12:05 after the 
station operator checked the power system and cycled power to the DAS. 


2007.08.23

The station is down as of about day 235-03:21 due to problems with
the DAS that are yet to be determined.


2007.08.14

The wdo channel is restored as of about day 2007,226-14:29 after the 
station operator replaced the microbarograph.


2007.06.14

The East-West channels from the STS-1 seismometer have been restored
as of about day 165-08:50 after an IDA engineer visited the station
and replaced the circuit board in the DAS. 


2006.06.14

The station was down from day 164-14:41 to 166-07:32 due to problems
with the communication link between the digitizer and the ISP. The 
station operator reconnected the link and data acquisition resumed. 


2006.03.01

The station operator restored the vertical channels for the STS-1
by replacing the faulty circuit board with the functional board from 
the E-W channels.  The wdo channel is out. 


2006.02.01

The station is up after the station operator replaced the DAS.  The 
vertical channels for the STS-1 seismometer are out due to a faulty 
circuit board in the DAS.  The station operator has been requested to 
remove the faulty board and insert one of the functional boards from the
horizontal channels' slots into the vertical channel's slot.
  

2005.12.03

The station is down as of day 334 (Nov.30) due to communication problems
between the DAS and the ISP.

2005.09.06

The BBN channels for the STS-1 sensor are out as of 2005:244-06:13 due to 
a faulty circuit board in the DAS.  The station operator has been instructed
and has removed the faulty circuit board. Currently the BBN and BBE channels
are out.


2005.07.15

Station was down day 193-18:26 to 196-07:38 due to problems with communication
between the DAS and ISP.  The station came back up after the station 
operator cycled power to the DAS.


2004.06.23

Station is up again after the station operator power cycled the digitizer.


2004.06.21

DAS stops sending data.  Station operator has been notified.


2004.03.04

The data acquisition system has been upgraded to a MK7-ISP system.  
An IDA engineer installed a Paroscientific microbarograph and replaced
the main and vault power supplies, GPS receiver, and station processor.
A faulty RT303 card was removed from the DAS for the BBZ channels and was
replaced with an operational RT303 card from the BBE channels. 

2003.12.17

Station is back up after the station operator removed the faulty RT303 
board for the digitizer's BBN channels.


2003.12.08

Station is down due to problems with the DAS/ARS. There is a faulty RT303 
board in the digitizer.


2003.12.01

There are several gaps in recent NRTS data due to communication errors with the
Auxiliary Recording System (ARS). After the ARS was rebooted at 2003:331-17:02,
(11/27) continuous NRTS data to the disk loop resumed. However, there are
timing problems with the data due to a faulty RT303 board for the digitizer's
BBN channels. 
    

2003.01.29

Telemetry at the station was restored after the operator installed a
replacement workstation shipped to the site from UCSD.


2002.10.28

Data streams from the STS2 sensor returned to normal after the DAS boards
were reseated by the operator.  When the EPROMs were replaced on 7/15/02,
the boards had been improperly re-inserted into the DAS, which resulted in
loss of all STS2 and STS1 mass position data.


2002.07.15

Data streams from the STS2 sensor are non-seismic. 


2002.04.22

Station operating normally.

2008.09.26

The station is back online as of about day 2008,269 after an IDA engineer
visited the station and upgraded the data acquisition system to a Quanterra
Q330HR system.


2008.06.19

The station is down as of about day 2008,171 due to problems with the
DAS that are yet to be determined.  A replacement DAS is being prepared
to ship to the station.

2007.03.03

The station was down from day 062-04:26 to 063-22:42 due to problems
with power to the station.  The station came back online after the
station operator cycled power to the ARS.

2006.12.20

The station was down from day 352-06:25 to 354-01:41 due to a power
outage caused by a faulty UPS.  Data acquisition resumed after the 
station operator restored power to the station.


2005.01.05

Station is back up and telemetry restored as of 12/24/04, after the
station operator installed a new workstation. 


2004.11.18

Station is down due to workstation failure. 


2003.08.27

Station operator reports the vault power supply was vandalized about a week ago.
The station lost power so was down for about 3/4 of a day. 
The station operator also replaced the DAT drive but notes there are still
recording errors. Despite recording errors telemetry to the station has 
remained operational and data via telemetry remains complete.


2003.06.30

Telemetry restored.  NRTS data acquired as of 2003:151-02:23:23 (May 31,2003).


2003.05.29

No NRTS data as of 2003:148-21:29:17 (May 28,2003).


2003.04.07

Bad tape batch, replacements sent.


2002.07.22

New EPROMs installed to correct DSP problem.


2002.07.10

Telemetry problem resolved as of 2002133 (May 13,2002).

2002.04.22

Station operating normally. There is no telemetry due to a disk failure on
the NRTS workstation.

2006.04.14

The station has been upgraded to IDA9 data format.  The ISP has been
upgraded to a SunFire including a CD writer.  All the broadband (BB*)
channels are seismic as of about day 103-12:22.


2005.10.17

Station is up as of day 287-13:57 (Oct.14), except BBZ channels are out for
reasons yet to be determined.


2005.08.17

Station is down since day 220 (Aug 8) due to problems with DAS. The station operator
reported the cause was a thunderstorm August 7.    

2004.11.05

Telemetry restored. NRTS data coming in as of day 308-09:59 (Nov. 3).
Excessive DAS reboots in telemetered and recent tape data indicate
the ISP hard disk needs to be replaced.


2004.04.05

Station operator reports fixing the station on 2004.03.30.
Telemetry is still down due to a broken communication cable.


2003.09.12

Station operator reports GPS clock failure on 2003.09.09.


2003.07.14

There is frequent spiking on the North-South channels from the STS-1 seismometer
for reasons that are not yet understood.


2002.12.03

Data acquisition was restored.
New EPROMs installed to correct DSP problem.

2002.11.23

No data coming from DAS.  Failure of DAS XCOM board suspected.


2002.04.22

Station operating normally.  There is high frequency background
noise in the vault.

2009.05.23

New station UOSS installed in Sharjah, United Arab Emirates with two Q330HR
data acquisition systems.  Sensors installed include STS-1 broadband and
STS-2 short period seismometers, a strong motion sensor and a Paroscientific
microbarograph.

2009.08.27

An IDA engineer visited the station and replaced the STS-2 seismometer with
a new Trillium 240 seismometer. 

2009.01.26

The masses for the STS-2 seismometer drifted out of normal operating range on 
day 2009,019. The mass position was adjusted and normal operation resumed on
day 2009,026.


2008.10.06

The station is up as of about day 2008,278 after an IDA engineer visited the
station and upgraded the data acquisition system to a Quanterra Q330HR system.


2008.08.11

The station is down as of about day 2008,223-15:51 due to problems with 
the DAS.


2008.01.29

The East-West channel (BHE-10) from the STS-2 seismometer has occasional 
spiking since the DAS was repaired on day 2007,101. 


2007.10.11

The station was down from about day 2007,275-19:00 to 2007,284-23:57 due to 
communication problems between the DAS and the ISP.


2007.04.11

The short period channels for the STS-2 seismometer were restored as of about
day 101-02:18 after the station operator reconfigured the circuit boards in the DAS.


2007.04.05

The station is back online as of about day 095-01:01 after the station operator
replaced the DAS, recentered the masses for the STS-2 seimometer,
and cycled power to the GPS clock. The short period channels for the STS-2
seismometer remain nonseismic for reasons yet to be determined.


2006.12.12

The station is down as of about day 346-09:26 due to problems with the DAS.
The DAS was shipped back to UCSD for repair(received Jan 3.), and testing
of the repaired DAS is in progress.


2006.06.05

The wdi-00 channel is restored after the station operator replaced the 
microbarometer on May 30.  


2006.01.30

The short period channels from the STS-2 seismometer were spiking from about
day 18 (Jan 18) to day 25. The station operator recentered the masses for the
STS-2 seismometer and the short period channels returned to normal. 

 
2005.01.12

The wdi-00 channel is out due as of 2005,349 (Dec.15) to a faulty microbarometer.


2004.08.10

The data acquisition system has been upgraded to a MK8 system.
New equipment including a GPS clock, power supplies, radios, and a
Paroscientific microbarograph have been installed.

2003.08.18

Station operator notes media wear problems, and replaced DAT drive.


2003.07.14

Station was down temporarily while maintenance was taking place.
Data was not acquired from 2003.07.09 to 2003.07.14.  


2003.06.02

Clock problem was resolved after it was reset.

2003.05.21

Continuous internet connection via satellite link established.

2003.04.23

Data streams from the STS2 sensor returned to normal after the masses
on the seismometer were recentered by the station operator. 


2003.03.31

The masses of the STS2 sensors have drifted out of the operating range
and will have to be manually readjusted.

2002.09.12

New EPROMs installed to correct DSP problem.


2002.07.10

By replacing the optical modem on 2002:171-02:30 (June 20, 2002)
the timing signal has been fixed.  

2002.06.10

The station is operating but there are problems with the timing signal
being transmitted on the recently-repaired uplink cable.  The station
configuration is being reviewed to determine how best to bypass the
damaged cable.