Topcon GM-100 Series User Manual

100
22. SURFACE AREA CALCULATION
4. Sight the first point on the line enclosing the area, and press
[OBS].
• The tilt screen is displayed if the instrument is out of level.
Level the instrument.
"7.2 Levelling"
5. Press [MEAS] to begin observation.
The measured values are displayed.
6. Press [OK] to enter the value of the first point in “01”.
• Press [REC] in the second screen of step 5 to record code,
target height, and point name. The point name recorded
here will be displayed in "01".
7. Repeat steps 4 to 6 until all points have been measured.
Points on an enclosed area are observed in a clockwise or
counterclockwise direction.
For example, the area specified by entering point names 1,
2, 3, 4, 5 or 5, 4, 3, 2, 1 implies the same shape.
After all known points necessary to calculate the surface
area have been observed, [CALC] is displayed.
8. Press [CALC] to display the calculated area.
PT : number of set points
SArea : slope area
HArea : horizontal area
9. Press [REC] in the screen of step 8 to record results and
return to <Menu>.
Press [OK] to return to <Menu> without recording results.
PROCEDURE Surface area calculation by reading in the points’ coordinates
1. In the second OBS mode screen, press [MENU], then
select "Area calc.".
2. Enter the instrument station data.
3. Select "Area calculation" in <Area calculation>.
OBSLOAD
N
E
Z
12.345
137.186
1.234
0
ZA
HA-R
90
109
01
32
25
00
REC MEAS OK
OBS
Pt_01
OBSCALC
Pt
_
01
Pt
_
02
Pt
_
03
Pt
_
04
Pt
_
05
PT 5
SArea 468.064m
2
0.0468ha
431.055m
2
0.0431ha
HArea
REC OK

Topcon GM-100 Series Specifications

General

Brand	Topcon
Model	GM-100 Series
Category	Measuring Instruments
Language	English