Sokkia im-101 Operator's Manual page 129

Calculation using KE2 as reference: "KE
AZ
KA
KE-KA
Curve length
Q
Q Stationing Chainage
Stationing Chainage
KE
BP

• If the following conditions are not met, coordinate calculation cannot be performed.
"KAKE Calculation 1":
"KAKE Calculation 2":
"KEKA Calculation":
PROCEDURE Calculation using KA Point as reference
1. In the second page of the OBS mode screen, press
[MENU], then select "Road".
2. Select "Spiral" to enter the spiral menu then select "KA-KE
1".
3. Input the coordinates of the KA point (reference point).
Press [OK] to set the input values.
4. Input the coordinates of the IP point, then press [OK].
• The azimuth angle to the IP point can be set by pressing
[AZNTH] on the second page. Press [COORD] to return to
coordinate input.
KA Calculation"

KE point (P1)
KE tangential angle (AZ)
Clothoid parameter A
KE to KA curve length (L)
KE follow-up distance (DL1)
Target point follow-pu distance (DL2)
Route width (BL)
0 ≦ curve length ≦ 2A
0 ≦ KA - reference point curve length ≦ 3A
0 ≦ KA - target point curve length ≦ 2A
0 ≦ KA - KE curve length ≦ 3A
0 ≦ KA - target point curve length ≦ 2A
123
25. ROUTE SURVEYING
R o a d
O c c . O r i e n .
L i n e
C i r c . C u r v e
S p i r a l
P a r a b o l a
S p i r a l
K A - K E 1
K A - K E 2
K E - K A
S p i r a l / I P
1 0 0 . 0 0 0
N p :
E p : 1 0 0 . 0 0 0
LOAD REC OK