Spectra Precision Survey Pro v4.6 Recon-Nomad Reference Manual - Manual (Page 385)

COGO Menu
R-377
SD/ZA to HD/VD
Cogo SD/ZA to HD/VD .
The SD/ZA to HD/VD screen will convert a slope distance and zenith
angle to an equivalent horizontal distance and vertical distance.
Slope Dist: is the slope distance to be converted.
Zenith: is the zenith angle to be converted.
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-457).
; Earth Curvature Adjust : When checked, the
computed horizontal distance and vertical distance will
account for the curvature of the earth and refraction.