Spectra Precision Survey Pro v4.5 Ranger Reference Manual - Manual (Page 380)

Survey Pro Reference Manual
R-372
HD/VD to SD/ZA
Cogo HD/VD to SD/ZA .
The HD/VD to SD/ZA screen will convert a vertical and horizontal
distance to an equivalent slope distance and zenith angle.
Horz Dist: is the horizontal distance from the
occupy point to the foresight point.
Vert Dist: is the vertical distance from the
occupy point to the foresight point.
HI: is the distance that the total station is
above the ground.
HR: is the length of the rod.
: opens the Smart Target options (Page R-
449).
; Earth Curvature Adjust : When checked, the
resulting zenith angle and slope distance will account for the
curvature of the earth and refraction.
Solve : computes the equivalent slope distance and zenith angle from
the data entered.
Results
Zenith: is the computed zenith angle from the occupy point to the
foresight point.
Slope Dist: is the computed slope distance from the occupy point to
the foresight point.