Viavi 87339, Operation Manual

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D - 1
Appendix D - Exported and Imported File Formats
The GPSG-1000 has the ability to import and export a number of different file types for
different uses. The file types include Almanac, KML, NMEA (Trajectory), Route, Settings
and Waypoint. This appendix will attempt to explain the content of each of the file types
that are able to be exported and imported onto the unit so the user can understand the
content and format of each.
File Locations
Within the GPSG-1000, the various user files are stored on a static memory device, and
with the exception of the load, store, manage, delete, import and export functions
provided to the user through the UI, the user cannot further manipulate the files while
they are contained within the unit. The user can however export the files to a USB drive
where they can be accessed, edited and stored, and then using the import function of the
GPST-1000, they can be reloaded onto the unit for use. When the various file types have
been loaded onto a USB stick, the directories are created under the /Instrument directory
which is located at the root of the USB device (Figure D-1).
Fig. D-1 File Locations
Almanacs Files
The Almanacs directory contains almanac files in Yuma format (ICD-GPS-8.70 Rev A,
Date Jun 15, 2011). The Almanacs files are either generated by the GPSG-1000 internal
receiver downloads, or are downloaded from the United States Coast Guard repository
website.