MTS600 Instruction Manual
73
*dms
gon
Angle unit
mil
Select dms(360
°
), gon(400G) or
mil(6400M) for angle unit
*m
Distance unit
ft
Select meter or feet for distance unit,.
*
℃
Temperature unit
℉
Select temperature unit in atmosphere
correction.
*hPa
mmHg
Pressure unit
inHg
Select air pressure unit in atmosphere
correction.
None
Auto power off
*20
′
Select whether to turn power supply off
automatically if no operation of
instrument in twenty minutes.
1200 bps
2400 bps
4800 bps
*9600 bps
Comms setting
19200 bps
Select
baud
rate
for
data
communication.
Define <USER> key
Please see below.
Correction for refraction and earth curvature
l
MTS600 can correct the measurement error of horizontal distance and height
difference caused by atmosphere refraction and earth curvature.
l
When slope distance and vertical angle measured, MTS600 carries out
correction of horizontal distance and height difference using the formula
below:
Horizontal distance : Hd=Sd
×
[cos
α
+ sin
α×
Sd * cos
α
(K-2) / 2Re];
Height difference: Vd= Sd
×
[sin
α
+ cos
α×
Sd * cos
α
(1-K) / 2Re];
K: refraction modulus
（
0.14 or 0.20
）
;
Re: earth curvature radius
（
6372 km
）
;
α
:vertical angle from horizontal plane;
Sd: slope distance;
