Height Measurement (Rem) - GPI -122 Instruction Manual

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*cosα1*tgα2-S*sinα1
H2= S*cosα1*tgα2-S*sinα1
【Procedure of REM(Ht–Ground to target)】
Survey (Height)
1.Ground to target
2.Point to point
Input I.H. &T.H.
I.H.: 1.500
T.H.: 1.000
B.S. Clear Save
Height-Prism
Vz: 88°18' 22"
HR: 1°46' 31"
HD:
Meas Mode
α2
α1
1. Select menu item 1 when you need the height
▲
between the target and ground.
2. Setting height of instrument and the height of
m
prism
Enter
3. Press F1:【Meas】to start EDM then you can
obtain the horizontal distance between the
4.827m
instrument and the target. Press F4:【Enter】to
accept the measurement data
Enter
39
Target point B
H2
S
Ht
H1
B'