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6.1 GARMIN FILE FORMAT
Waypoint, proximity waypoint, route and track data are stored as ASCII data
files in GARMIN format, with file extensions “.WPT”, “.PRX”, “.RTE”, and
“.TRK” respectively. Real time data logged to a file is saved as ASCII data
in GARMIN format with a “.TRK” extension. Waypoint, proximity waypoint,
route and track data must also be in GARMIN format to be used by the PCX5
plotting program or uploaded to the unit..
Each GARMIN file is composed of multiple data lines (each line is a “record”).
The first character on each line is the record type, identifying the type of data
to follow.
The following lists the valid record types:
H = Header record (provides column titles only; contains no data)
I = Software Identification
M = Map Datum
U = Coordinate System
W = Waypoint record
R = Route record
T = Track record (track log file) and Real time logging record (select
NMEA output format)
C = Checklist record (PC150 Only)
S = Schedule record (PC150 Only)
The data fields associated with the record follow the record type. All fields
must be separated by spaces. Non-trailing empty fields will contain one or
more space characters.
At least one header line (H record) precedes each logical group of data lines.
For example, a ground track file may have hundreds (or thousands) of T
records, but the file may have only one H record at the beginning of the file.
The following is a list of header titles used for data fields in the various types
of GARMIN file records (units are given where appropriate):
· LATITUDE
· LONGITUDE
· DATE in form of DD-MMM-YY
· TIME in form of HH:MM:SS (UTC time)
· ALT = Altitude in meters
· ZONE = Grid coordinate zone identifier
· EASTING = Grid coordinate easting offset in meters
· NORTHING = Grid coordinate northing offset in meters
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