Spectra Precision FAST Survey Reference Manual - Manual (Page 90)

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From Known Position Options
 Previously Surveyed Point:
This requires you to enter the coordinates, on the configured coordinate system, of a
known, surveyed point. This will transform and localize to the local coordinate system, and optionally can be
followed by rover-based localization. The known point must be found in the RW5 file in a form that includes its
Lat/Long (a previous GPS measurement). This Lat/Long, just as with New Position options, is used to establish the
base position. This method requires that you are working within an existing job that has a raw file including
Lat/Long positions for the points being used. This next figure is an example of the prompting.
Like the other options, this continues on by showing the corresponding Lat/Long for the coordinate and allowing
the user to save the result in a reference file.
 Use Local Coordinates:
If you have “localized” using option 5 (Localization) within the Equip menu, you obtain a
“dat” file. This localization file is used to convert any Lat/Long reading into a local coordinate. By the same token,
you can take a local coordinate, run it back through the dat file and obtain a Lat/Long for the base receiver setup.
That is the procedure used in this option.