Spectra Precision Survey Pro v4.6 Recon and Nomad User Manual - Manual (Page 295)

GPS Module
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7. In the list box, control points collected will be
identified with an H and/or V. Points marked H will
be used to solve horizontal localization. Points
marked with a V will be used to solve vertical
localization. You can select or deselect any point by
highlighting that point and then: tap the H and/or V
column beside that point; press H and/or V on the
keyboard.
Note: If your base was set up on a known point, that
point is an eligible control point. If your base was set up
on a new point, then it is not visible on the control point
list.
8. If you wish to hold the scale of the GPS
measurements, but you want the localization adjustment to
correct for a rotation, check the Solve Rotation Only control in the
Fix H Scale to 1.0
box.
9. Double check the selection of control points and tap Solve >. The
localization parameters are computed using the selected control
points, and the next screen is opened with solution RMS values.
10. For both horizontal and vertical, the solution type and RMS value
from the control points are displayed. The solution type will be
one of: