39
11. Height measurement (REM)
REM is a function used to measure the coordinate and height to a point where a target
cannot be directly installed such as power lines, overhead cables or bridges, etc.
Here is the equation used to calculate the data presented in above figure:
Ht=H1+ S*cos
α
1*tg
α
2-S*sin
α
1
H2= S*cos
α
1*tg
α
2-S*sin
α
1
【
Procedure of REM(Ht–Ground to target)
】
1. Select menu item 1 when you need the height
between the target and ground.
2. Setting height of instrument and the height of
prism
3. Press F1:
【
Meas
】
to start EDM then you can
obtain the horizontal distance between the
instrument and the target. Press F4:
【
Enter
】
to
accept the measurement data
Target point B
H2
H1
Ht
S
B’
α
1
α
2
Survey
(Height)
1.Ground to target
▲
2.Point to point
Input I.H. &T.H.
I.H.:
1.500
T.H.:
1.000
m
B.S. Clear Save Enter
Height-Prism
Vz:
88
°
18' 22"
HR:
1
°
46' 31"
HD:
4.827m
Meas
Mode Enter