Spectra Precision Survey Pro v4.9 - Manual (Page 115)

reference map projection, and Geoid model are displayed.
[Reset Origin…]: Opens the Calibration Set Zone screen, where you can enter the parameters of the intermediate
mapping plane to be used for the calibration adjustment.
Note: This step is usually not necessary, since the intermediate mapping plane is automatically set up by default using
the location of the first GPS control point collected in this job. However, if the first GPS control point is far away
(more than 10km), or it is considerably higher or lower (+/- 200m) you may wish to enter the parameters of the
intermediate mapping plane.
[Solve Calibration…]: Opens the Solve Calibration screen, where control points can be selected and the horizontal
and vertical calibration are solved.
[Switch to Mapping Plane…]: Switches the horizontal projection mode from Ground – Default Ground Calibration to
Mapping Plane .
Projection Details
[Survey] [Projection] [Show Details…]
The Projection Details screen is used to view the numeric parameters of the current coordinate system solution. You
can also choose to save the coordinate system to the data base from this screen.
[Save System To Database]: Saves the current projection record to a coordinate system database file. First, the
current database file is checked for a matching record, and if found you will be prompted that you need not save the
current coordinate system. If no matching record is found, then the current coordinate system will be saved as a new
record. If a different record with the same name is found, you will be prompted to rename the current record before
you can save.
Calibration Set Zone
[Survey] [Projection] [Reset Origin…]
The Calibration Set Zone screen is used to manually configure the parameters of the calibration reference stereographic
projection. It is also used to select the geoid model to use with calibration coordinate systems.
Zone / Site Name: Displays the name of the current initialized calibration zone or the solved calibration site.
Setup Group: Enter the set up group of the reference stereographic mapping plane.
Origin Latitude: Enter the origin latitude of the reference stereographic mapping plane. This is usually set at the
latitude of the first GPS control point.
Origin Longitude: Enter the origin longitude of the reference stereographic mapping plane. This is usually set at the
longitude of the first GPS control point.
[Origin Height] / [Origin Scale]: Enter either the height or the scale factor used to reference the calibration system to
ground level.
[Same as Base]: Updates the values with the coordinate and set up group of the GPS base station.
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