Spectra Precision Survey Pro v4.6 Ranger User Manual - Manual (Page 123)

Mapping Plane Scale Factor
113
Automatic Map Plane with Sea Level
You should select Use automatic map plane grid
factor with sea level correction option when you
want the grid factor computed for each occupy
setup point and a sea level correction computed
for each shot.
To configure a map zone, tap the bottom button
to open the Select Coordinate System screen.
This button is labeled Change Map Zone if a
map zone is already configured or Set Map
Zone if a map zone is not yet configured.
Configuring a map zone is described in the
Projection Mode section of this manual, starting on Page 222.
Map Plane Ground Coordinates
If you do want to use map plane ground coordinates, mark the Use
map plane ground coordinates checkbox and tap the Setup Map Ground
Coordinates button to set up your ground coordinates.
If a map projection zone is not already selected, you will first be
required to select one. Once selected, the Mapping Plane Ground
Setup wizard will open.
Enter the origin point and tap Next > .
Ideally the origin point should be located near
the center of your job and at an average
elevation.