Specifications

Operation 7
Operation
directory or in a sub-directory. The receiver creates and maintains directories and files
on the PC Card using the file structure illustrated in Figure 2.1.
Other files may be stored on the PC Card, although it is recommended that the PC
Card only be used for storage of data because the $PASHS,CLM and
$PASHS,FIL,D,99 will reformat the card and all files will be lost.
Almanac files are stored in the root directory, while all other data are stored in
subdirectories that are named for the day of the year in which the data was recorded
(for example “DAY077”). These subdirectories are also known as workday
directories. Multiple sessions collected on the same day will be stored in a single
workday directory. However, if the receiver detects that more than six hours have
elapsed between the previous session and the current session recorded on the same
day, then a new subdirectory is created (DAY077_1). The subdirectories are named
according to UTC time and does NOT take into account your local time zone.
File Types
The receiver is capable of creating a number of different files that cover a wide
variety of information. Primarily, the receiver will generate raw data files, ephemeris,
and site information files, but can also create position only files, event marker files,
and site attribute files. Each file is named for the first letter of the file. For example,
Figure 2.1: PCMCIA File Card Structure
1st session
2nd session
3rd session