Sokkia CX-62 Operator's Manual page 187

PROCEDURE Calculation using ECC Point as reference
1. In the second page of the OBS mode
screen, press [MENU], then select
"Road".
2. Select "Parabola" to enter the
Parabola menu then select
"ECCETC Calc."
3. Input the coordinates of the ECC point
(reference point). Press [OK] to set
the input values.
4. Input the azimuth angle of the arbitrary
point on the line tangential to the KE
point, then press [OK].
• Pressing [COORD] sets the
coordinate toward the tangential
direction. Pressing [AZMTH] on the
second page returns to the screen
for inputting the azimuth angle.
5. Enter the curve direction, parameter
X, ECC-ETC curve length, ECC
stationing chainage and Q stationing
chainage (Set out pt sta).
25. ROUTE SURVEYING
Parabola
BTC
ECC
Parabola/ECC PT
Np : 475073.398
Ep : 203897.770
LOAD
Parabola/2nd tan pt
Azmth
COORD
Parabola/CL peg
Direction.
Para X
ECC-ETC Length
ECC Sta..ing
Set out pt sta
179
BCC Calc.
ETC Calc.
REC
20.0000
OK
Right
133.000m
140.000 m
OK
0.000 m
20.000 m
OK
OK