Topcon GTS-823A User Manual
Page 118
11-2
11 SETTING ATMOSPHERIC CORRECTION
l
How to Set the Atmospheric Correction Value Directly
Measure the temperature and air pressure to find atmospheric correction value (ppm) from the chart or
correction formula.
[Example] Atmospheric correction value
The display returns STAR key menu.
*1) Range : Temp. -30.0
°
C to +60.0
°
C (0.1
°
C step)
Pres. 560.0 to1066.0hPa (0.1hPa step) , 420.0 to 800.0mmHg (0.1mmHg step)
16.5 to 31.5inHg (0.1inHg step)
*2) When the atmospheric correction value, which is calculated from the input temperature and pressure
values, exceeds the range ± 999.9ppm, the operating procedure returns to step
3
automatically. Input
values again.
Operating procedure
Operation
Display
1
Press STAR (
H
) key.
Press the [F6] key twice to get the page three.
[
H
]
[F6] twice
2
Press the [F2] key.
Current setting value is displayed.
[F2]
3
Move the cursor (>) to ppm setting by
pressing [F5](
→
) key.
Move
cursor
4
Enter atmospheric correction value and press
[ENT] key. *1)
Enter ppm
[ENT]
The display returns previous mode.
*1) Input range : -999.9mm ~ +999.9mm, 0.1mm step
2003-10-10 14:30:40
3
↓
20.0
°
C
5.1ppm
-2.0 mm
1012.0hPa
5.1ppm
-2.0 mm