Sokkia iM-50 Series Operator's Manual page 79


• 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]: "33.11 Allocating Key Functions"
PROCEDURE Defining by observation
1. In the second page of OBS mode screen, press [MENU],
then select "Set-out arc".
2. Enter the instrument station data.
"13.1 Entering Instrument Station Data and Azimuth
Angle"
3. Select "Define arc" in <Set-out arc>.
4. Sight the From point and press [MEAS].
• Press [STOP] to stop the measurement.
• The tilt screen is displayed if the instrument is out of level.
Level the instrument.
"7.2 Levelling"
5. Press [OK] to use the measurement results of the From
point.
• Press [MEAS] to observe the first point again.
• Press [HT] to input instrument and target height.
6. Press {}/{} to select coordinates then press [OK].
7. Sight the To/Center/Intersect point and press [MEAS].
8. Press [OK] to use the measurement results of the To/
Center/Intersect point.
• Press [MEAS] to observe the second point again.
• Press [HT] to input instrument and target height.
• When entering multiple points, [NEXT] is displayed instead
of [OK]. Press [NEXT] to observe the next point.
LOAD
N p :
E p :
Z p :
Z A
H A - R
H T
REC
S e l e c t P t .
LOAD
N p :
E p :
Z p :
Z A
H A - R
REC H T
74
17. SETTING-OUT ARC
F r o m P t .
REC MEAS OK
1 1 3 . 4 6 4
9 1 . 0 8 8
1 2 . 1 2 2
9 0 0 0 0 0
1 2 0 1 0 0 0
R E C
HT MEAS OK
T o
OK
To P t .
REC MEAS OK
1 1 3 . 4 6 4
9 1 . 0 8 8
1 2 . 1 2 2
9 0 0 0 0 0
1 2 0 1 0 0 0
R E C HT MEAS OK
C
C

C