Spectra Precision Survey Pro v4.6 Ranger Reference Manual - Manual (Page 236)

Survey Pro Reference Manual
R-228
Key In Zone - Datum Translation
The Key In Zone Datum Translation screen is used to enter
translations when the Datum Type is Molodensky or Similarity.
Datum Translate From WGS84 To Local
: is
where you enter the three translations from
WGS84 to the local datum.
Note: The sign convention for the datum
translations is from WGS84 to the local datum.
If your datum transformation is defined for
local to WGS84, be sure to inverse values
before entering in Survey Pro.
Key In Zone - Datum Rotation and Scale
The Key In Zone Datum Rotation and Scale screen is used to enter
translations when the Datum Type is or Similarity.
Datum Rotations From WGS84 To Local
: is
where you enter the three rotations from
WGS84 to the local datum.
Scale Factor (ppm)
: is where you enter the
scale of the datum transformation from WGS84
to the local datum. The scale factor is entered
in parts per million.
Note: The sign convention for the datum
rotations and scale factor is from WGS84 to the
local datum. If your datum transformation is
defined for local to WGS84, be sure to inverse the values before
entering in Survey Pro.