20
The formulas of two corrections about our instrument are as
followed:
Corrected Horizontal Distance :
D=S×[cosα+sinα×S×cosα(K-2) / 2Re]
Corrected Elevation :
H=S×[sinα+cosα×S×cosα(1-K) / 2Re]
If the Atmospheric Refraction and the earth curvature are
not corrected, the formula for calculating horizontal distance and
elevation are as followed:
D=S×cosα
H=S×sinα
In the formula:
K=0.14----------- Atmospheric refraction coefficient (can be
selected according to actual)
Re=6370 km---Radius of the earth curvature.
α(or β)-----------------The vertical angle (counted from the
horizon)
S-------------------Slope distance
3.8 Set up the minimum reading of the angle
Refer to the operation “Menu
→
5.Options
→
3.Other options
→
1.Mini Angle
”
. The interface as shown in picture below:
Mini Angle
[1. 1″ ]
Exit
Enter
2. 5″
3. 10″
3.9 Setup of Automatic Shutdown
Refer to the operation “Menu
→
5.Options
→
3.Other options
→
2. Auto shut off
”
. The interface as shown in picture below:
