Spectra Precision ProMark Field Software - Manual (Page 52)

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physically located on this point and you have previously
selected it in the list.
You can view the Hor. correction and Ver correction tabs
showing the characteristics of the local system, as
currently determined by the process.
• When you are pleased with the results of the process (i.e.
all residuals are zero or close to zero), then you can make
the local system the new coordinate system used in the
job by tapping
OK.
Note that the coordinates displayed at the bottom of the
screen now reflect the change of coordinate system.
• If you select Menu>Job>Properties and you open the
Coordinate System tab, you will notice that the name of the
coordinate system used is now “Fitted” and the projection
and vertical datum are unchanged compared to the
coordinate system originally used in the job.
NOTE: After the local coordinate system has been determined
and validated in a job, there is no way you can revert to the
coordinate system initially defined for the job.
One-Point Calibration
This is a particular case of calibration in which you only need
to refine the coordinate system used to match an existing
known point. The adjustment only consists of translating the
coordinate system used in the horizontal and/or vertical
plane.
The procedure is similar to the general case of calibration
except that you just need to occupy one point (the known
point). ProMark Field will then indicate the deviation
introduced by the point to the initially selected coordinate
system. Just tap
OK after you agree with the results of the
calibration.
Like in the general case, if you select Menu>Job>Properties
and you open the Coordinate System tab, you will notice that
the name of the coordinate system used is now “Fitted”. The
projection and vertical datum are in this case unchanged
compared to the coordinate system originally used in the job,
Only vertical and/or horizontal corrections may have been
introduced through the one-point calibration process.