The state of health file is a diagnostic information status stream produced by the seismometer and their corresponding data logger known as Maris Interface. The first part of this page concern seismometer .soh files. The first part of this page concern the Maris interface .soh files. The state of health file contains a GPS status message every minute, an environmental measurements message every ten minutes, a GPS synchronization status message every twenty minutes and GPS timing, visibility and position message every hour.
Oceans 3.0 API filter: dataProductCode=SH
Oceans 3.0 API filter: extension=soh
The content of these files is parsed to sensors relevant to each type of seismometer.
o/s: The current offset between the internal clock vs GPS time.
Drift: The difference between current o/s and previous o/s.
Pwm (Pulse Width Modulation): Feedback control parameter.
Manual 3-D: Signifies that enough GPS satellites are visible to obtain a 3D fix. If “No Fix” is displayed, the GPS received has not yet been able to obtain a satisfactory fix.
Example: 2015 11 5 06:00:00 o/s= 2152 drift= 2036 pwm= 8649 Manual 3D
External Supply: Voltage received by seismometer from the power supply.
Temperature: Internal temperature of seismometer.
Example: 2015 11 5 06:05:00 External supply : 14.1V Temperature 12.62'C
Current Offset: Current offset between internal clock from GPS time in micro seconds. Slow or fast is used to represent if internal clock is ahead or behind GPS time.
Frequency error: Frequency error in Hz.
Mass Position: Displays the current mass positions.
Example: 2015 11 5 06:30:00 29.2 MicroSec Slow Freq error -74 e-9
2015 11 5 06:30:00 Mass Positions 5% -1%-19%
GPS timing: The current time provided by GPS
Satellite visibility: SV#’s, which stands for Space Vehicle Number is a list of all usable satellites. A minimum of four satellites is required to obtain a full 3-D GPS fix.
Seismometer position: Latitude, longitude and height of the seismometer. If position is unavailable, the latitude, longitude and height are shown as below.
Example: 2015 11 5 06:00:00 GPS Date/Time 05/11/15 06:00:00
2015 11 5 06:00:01 Manual 3D SV#'s 1 2 3 4 5 ( 5 )
2015 11 5 06:00:01 Lat 00'00.0000N Long 000'00.0000E Height 0m
Example .soh files: GEOSENSESEISMO114_20151105T000000.000Z.soh, GURALPBBSEISMO2533_20230126T000000.000Z.soh
Note that the contents from these SOH files are not parsed at the moment.
Host name, label, system type, SEED network and station, site name, firmware version, system reboots, boot time and uptime.
Example:
Host name: MIN-5A5B Host label: MARIS System type: Minimus SEED network: NV SEED station: ENEF Site name: Endeavour Firmware version: 2.0-8282 System reboots: 30 (since 2021-07-01 21:39:36) System boot time: 31.10.2022 02:01:49 System uptime: 71d 22h 42s |
Temperature (in degrees Celsius) and Relative humidity
Example:
Temperature: 19.795 °C Relative humidity: 24.36% |
Input voltage, power over Ethernet voltage
Example:
Input voltage: 31.029 V Power over Ethernet voltage: 0.612 V |
Mode and IPv4 sockets used
Example:
Mode: Static IPv4 sockets used: 12 out of 20 |
Geographical and satellite information (satellite info not relevant due to these being marine deployments)
Example:
Latitude: 48.6493 Longitude: -123.4481 Altitude: -12.34 m Horizontal dilution of precision: Last timestamp: 0000-00-00 00:00:00 Last lock time: 1970-01-01 00:00:00 Stability: 0% |
PTP state, last PTP timestamp and lock time, PTP stability, Master clock class and accuracy, Master time source, Network path delay, jitter estimate and outliers
PTP state: Phase Locked Last PTP timestamp: 2023-01-11 00:02:30Z Last PTP lock time: 2022-12-31 14:27:56Z PTP stability: 100% Master clock class: PRI_REF_PTP Master clock accuracy: <1.0us(0x23) Master time source: GPS Network path delay: 2189.0 us Network jitter estimate: +/- 3333 ns Network outliers: 7% |
External slot, Internal slot, Primary card status, backup card
External slot: Card detected / Card usable / Primary card Internal slot: Card usable / Backup card Primary card Status: Recording Size: 60686336 KiB Used: 58203052 KiB Backup card Status: Recording |
These sections depend on the number of sensors detected by the Minimus (the digitizer of the Maris Interface Unit), which depends on the amount of sensors that a particular unit is designed to support (e.g. a seismometer only, or a seismometer and a bottom pressure recorder, etc).
Serial number, firmware version, temperature (in degrees Celsius), rotation information (in degrees).
Sensor0 Serial number: Firmware version: 6.0 Sensor1 Serial number: TR1302 Firmware version: 5.20 Temperature: 10.95 °C Rotation: yaw = -32.965°, pitch = 0.175°, roll = 8.800° |
Example .soh file: To be added once in the archives
Information from manufacturer: https://www.guralp.com/documents/html/MAN-MIN-0001/s5.html
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