FTS LT1-CELL-VZ, Руководство оператора

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700- LT1-Man Rev 8 09 Feb 2021 Page 11/60
3) Remove Station from FTS360: Resets the station to factory defaults and removes the station
from FTS360. All data will be removed from FTS360 so users should save any data to other files
before deleting the station. Once deleted, the station can be set up as new station in the same
agency or a different agency. Refer to section 2.2.5.
2.3 DATA MANAGEMENT
Remote data management is dependent on the telemetry of the LT1 device.
LT1-CELL: securely transmits data through the cellular network to FTS360 where it can be viewed
and exported. Also stores data locally to SD card (see SD Card information in this section).
LT1-GOES : transmits data through the GOES/Meteosat network where it is available to users
through the standard distribution pathways of the relevant satellite authority. Additionally, the data
collected from any GOES/Meteosat capable data collection platform can be ingested by FTS360 for
managing data. Also stores data locally to SD card (see SD Card information in this section).
LT1-IRID: securely transmits data through the Iridium network and to FTS360 where it can be viewed
and exported. Also stores data locally to SD card (see SD Card information in this section).
SD CARD: All models can also store data locally to the supplied SD card for redundancy. This SD
card has been tested to work in the environmental conditions in which the LT1 is designed to
operate. Replacing it with a non-FTS approved, standard SD card can cause reduced or lost data in
the logs.
2.3.1 SD CARD – STORED INFORMATION AND TIMESTAMPS
The LT1 uses active data management which ensures no data is missed. Data collection and storage
will begin as soon as the cellular network provides a time stamp (LT1-CELL only) or a GPS time is
obtained, whichever comes first. After this initial time synchronization, in the event of a network
failure or no GPS fix, the LT1 continues to store data locally to the SD card. However, the time can
drift up to 2 seconds per day until a GPS connection is restored. Default GPS synchronization occurs
once per day.
For LT1-CELL and LT-IRID, once connectivity is restored, the LT1 will synchronize with FTS360 and
any missing data will be added to the FTS360 database.
For a GOES unit, data missing from transmissions must be collected on-site from the SD card.
2.3.2 SD CARD DATA LOG DIRECTORY AND FILE NAMING STRUCTURE
There are two data log types stored on the SD card: the .csv data log and the raw telemetry data log.
Refer to Table 1-1 for the directories and naming structures of the data log types.
For the raw telemetry data, each line is a direct copy of the data point and format sent over the
telemetry connection. For example, the LT1-CELL and LT1-IRID will contain JSON strings, while the
LT1-GOES will contain GOES formatted strings depending on the configuration of the GOES format.