Sokkia CX-101 Service Manual page 189

PROCEDURE
1. In the second page of the OBS mode
screen, press [MENU], then select
"Road".
2. Select "3PT Curve" to enter the 3 point
calculation menu.
3. Input the coordinates of the BP point
(reference point). Press [OK] to set
the input values.
4. Input the coordinates of the IP point,
then press [OK].
5. Input the coordinates of the EP point,
then press [OK].
6. The IA ang (intersection angle),
direction (of curve), BP-IP (BP-IP
length), and IP-EP (IP-EP length) are
calculated from the coordinates of the
three input points. The results are then
displayed on the screen.
Check the data, then press [OK].
• Press {ESC} to return to the previous
screen to make alterations to this
data.
7. Input curve properties: parameter A1,
parameter A2, curve radius, and St.
ofs (BP Point offset).
25. ROUTE SURVEYING
3 P T C u r v e
I P & Ta n
A l i g n m e n t
E D M
3 P T C u r v e / B P
1 0 0 . 0 0 0
N p :
E p : 1 0 0 . 0 0 0
LOAD R E C
3 P T C u r v e / E P
1 0 0 . 0 0 0
N p :
E p : 3 0 0 . 0 0 0
LOAD R E C
3 P T C u r v e
I A 9 0 0 0 ' 0 0 "
D i r e c t . R i g h t
B P - I P
1 4 1 . 4 2 1 m
I P - E P
1 4 1 . 4 2 1 m
3 P T C u r v e
P a r a A 1
P a r a A 2
R a d i u s
S t . o f s
O K
O K
O K
5 0 . 0 0 0 m
5 0 . 0 0 0 m
6 0 . 0 0 0 m
0 . 0 0 0 m
O K
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