Spectra Precision Survey Pro v4.6 Ranger Reference Manual - Manual (Page 197)

Survey Menu – GPS Module
R-189
Phase Center Radius
Slant Offset
Vertical Offset
Measurement
Point
Marker
Vertical
Height
Slant
Height
Note: When this screen is used by the RTK rover for updates of
antenna height during a survey, the Set button will send the new
antenna parameters to the receiver as well as updating Survey Pro's
settings.