Spectra-precision Survey Pro v4.5 Ranger User Manual Manual de usuario Pagina 232

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User’s Manual – GPS Mode
222
5. The next page will display the local
geodetic coordinate of the origin Reference
Point and the Ground Scale factor
calculated for that point. The scale factor is
the inverse of the combined scale factor for
the selected map projection zone at the
origin reference height, and it is
automatically calculated based on your
reference position. If you wish to use a
different scale factor, tap Override scale
calculated from location and enter your
value in the Ground Scale Box. Tap Next>.
6. Enter the Desired Local Ground Coordinate.
This will be the local plane coordinate of
the origin Reference Point. It is
recommended that you use a recognizably
different coordinate range to distinguish
the values from the grid coordinates. For
example, a UTM coordinate of (4,997,000,
356,000) could become (5000,5000). The
local coordinate you enter here is
subtracted from the actual grid coordinate
of your reference point to get the Ground
Offsets. Tap Next>.
7. Review the Ground Coordinate parameters: Reference Point
Location, Ground Offsets, and Ground Scale. When you are
satisfied with the setup, tap Finish.
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