STONEX R2 User Manual

STONEX R2
27
② Input prism constant and press
[ENT].
‴1)～‴2)
Input-30
+
[ENT]
【EDM Settings】
EDM Mode： Tracking
Prism： -30.0mm
ATMOS GRID SET ↓
③ After finishing setting, press
[F3](SET) to return to measure
function.
If to cancel the settings, press [ESC], a
dialog will appear as the right picture.
Press [F1] returning to EDM Settings
to renew the EDM parameters. Press
[F4] to return to the measure function
[F3]
【EDM Settings】
Quit the parameter？
CANCEL OK
‴1) About the way to input prism constant please refer to “2.7 INPUTTING MODE‟
‴2) The scope of prism constant ：-99mm～+99mm, Step Length 0.1mm
.
3.2.4 Setting Atmosphere Data
Refraction modules:
The instrument will automatically correct the effect of atmosphere refraction and the earth
curvature when calculating the horizontal distance and the height differences.
The correction for atmosphere refraction and the earth curvature are done by the formulas
as follows:
Corrected Horizontal Distance：
D=S * [cosα + sinα * S * cosα (K-2) / 2Re]
Corrected Height Differentia：
H= S * [sinα + cosα * S * cosα (1-K) / 2Re]
If the correction of atmosphere refraction and the earth curvature is neglected, the
calculation formula of horizontal distance and the height differentia are:
D=S²cosα
H=S²sinα
In formula: K=0.14
……………………
Atmosphere Refraction Modulus
Re=6370 km
………………
The Earth Curvature Radius
α (orβ )
………………...
The Vertical Angle Calculated From Horizontal Plane
(Vertical Angle)

STONEX R2 Specifications

General

Brand	STONEX
Model	R2
Category	Measuring Instruments
Language	English