AAK operational status:
The station operator visited the station and replaced the STS-2.5 seismometer.
The station was down from day 2017,223-11:58 to 2017,226-07:38 due to a power outage following a storm. Data acquisition was restored after the station operator visited the station and reset the sequenced power distribution bar (SPD).
The station operator replaced the AAK-00 digitizer on 2015,286 (Oct. 14).
The station operator replaced the Episensor strong motion sensor at day 2015,262-05:47 (Sept.19).
The station was down from day 2015,152-00:33 to 2015,154-07:15 due to power problems. Data acquisition resumed after the station operator visited the station and restored power to the equipment rack.
The station operator reports replacing the AAK-00 digitizer on day 295 (Oct 22,2014).
IDA engineers are onsite upgrading the power system, and installing a new STS-2.5 and Episensor Strong Motion Detector to replace the STS-2 and FBA accelerometer.
The station is back on-line after power was restored at 2013,084-05:15.
The station is down due to a power outage in the area. The power company is working on restoring power.
Data acquisition was restored after the station operator replaced the power supply.
There are problems with the power supply for the station computer. The station operator is going to use the power supply from an older spare computer onsite.
Telemetry to the station is down since day 2013,060-18:30. The station operator has been requested to investigate.
IDA station AAK is back on-line as of day 2012,299-08:12 after the station operator replaced the Newmar power inverter and a power supply on the network switch.
IDA station AAK is down as of day 2012,258-10:05 due to power problems at the station.
The AAK00 digitizer GPS is locked again after the station operator replaced the external GPS cable on day 2012,206-06:41 with an updated bi-directional cable sent from UCSD.
The GPS clock for the AAK10 digitizer locked as of day 2012,184-16:55. The GPS clock for the AAK00 digitizer remains unlocked. The AAK00 configuration was changed to get timing from the AAK10 digitizer, but the clock is still not locked. IDA engineers are investigating this GPS clock issue.
IDA station AAK is back on-line after communication between the vault and recording room was restored. The GPS clock remains unlocked and timing of the data is uncertain. New GPS antennas, surge protectors, and a bi-directional GPS cable are being shipped to the station.
IDA station AAK is down as of day 2012,169-01:40 due to a power outage caused by a storm. Some of the equipment in the vault has been damaged.
The station is back on-line as of day 2011,141-02:18.
The station is down as of day 2011,139-12:22 due to a power outage caused by bad weather.
The BB*10 channels from the STS-2 seismometer are showing long period pulses starting around day 2010,343 for reasons yet to be determined.
The station clock is locked and functioning normally as of day 2010,219-09:11 (Aug 7) after an IDA engineer visited the station and repaired the GPS antenna and replaced the aak10 DAS.
The station operator switched the ports for the GPS clock from the aak10 to the aak00 DAS. The clock remains unlocked and the station is down. Tests reveal there is no current to the GPS antenna. A station visit by an IDA engineer is being planned.
The station operator restored power to the vault. However, the station remains down due to a problem with the GPS.
The station is down as of day 2010,164-13:04 due to a power problem. There is a power outage within the vault. The station operator has been requested to cycle power to the vault power supply.
The station is back on-line as of day 2010,145 (May 25) after a power line to the station was repaired.
The station is down since day 2010,141 (May 21) due to a power outage caused by a storm.
The triggered channels from the FBA-23 accelerometer are non-seismic for reasons yet to be determined.
IDA station AAK has been upgraded to a Quanterra Q330HR system.
Telemetry to the station has been restored as of about day 2007,327.
The station is back online after an IDA engineer visited the station and replaced the DAS. Telemetry to the station is currently down.
The station is down due to a faulty circuit board in the DAS.
The station is up as of about day 093-04:22 (Apr. 3) after power was restored.
The station is down due to a power outage. The electric company has cut power to the station.
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.
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.
Station’s GPS clock has failed. A replacement will be shipped to station operator to replace the bad one.
Telemetry data start to come in via CTBTO GCI.
An IDA engineer visited the site to replace station’s ISP which fixes a recording problem which had developed over the past two months.
The station is up after an IDA engineer replaced the station’s ISP, DAS, and GPS clock.
Station is down due to communication problems between the DAS and ISP.
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.
New EPROMs installed to correct DSP problem.
Station is still down. An IDA engineer is preparing to visit the station to analyze and repair the recording problems.
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.