75
17. SETTING-OUT ARC
9. Enter other arc parameters.
(1) Direction (whether the arc turns right/left from the From
point)
(2) Radius (radius of the arc)
(3) Angle (subtended angle)
(4) Arc (distance along the arc)
(5) Chord (straight line distance between the From and To
points)
(6) Tan ln (tangent length)
(7) Bk tan (back tangent angle)
• Parameters that can be entered may be restricted
depending on the coordinates specified in step 5.
"
Specifying coordinates and curve parameters"
10.Enter curve parameters then press
{ENT}
. Other
parameters will be calculated.
•
[TO]
: Observation data for To point can be recorded.
[CENTER]
: Observation data for Center point can be
recorded.
[INTSCT]
: Observation data for Intersect point can be
recorded.
11.Press
[OK]
on the screen of step 10 to define the arc. <Set-
out arc> is displayed. Move to setting-out arc measurement.
• It is also possible to perform setting-out arc measurement by pressing
[S-O ARC]
when allocated to the OBS
mode screen.
Allocating
[S-O ARC]
: "33.12 Allocating Key Functions"
D i r e c t i o n :
L e f t
R a d i u s : < N u l l >
: < N u l l >
: < N u l l >
: 1 4 1 . 4 2 1 m
A n g l e
A r c
C h o r d
OK
Ta n I n :
B k t a n : < N u l l >
OK
< N u l l >
D i r e c t i o n :
R i g h t
R a d i u s
A n g l e
A r c
: 1 5 7 . 0 8 0 m
C h o r d : 1 4 1 . 4 2 1 m
OK
: 1 0 0 . 0 0 0 m
: 9 0 0 0 ’ 0 0 "
INTSCT
CENTER