Foif RTS680 Series - 6.3 3 D Coordinate Measurement

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Note:
◆ You can select “
1. Azimuth” to input the azimuth angle directly.
◆ After input the coordinate of backsight, you can press F1:[
MEAS] to check for
backsight checking, HD between station and backsight, dHD and dVD between calculated
backsight and measured backsight will be display.
press F3: [
REC] to record and set the station, then
back to the previous mode. You could also press F4:
[
OK] to set the station, but the data will not be
recorded.
6.3 3D Coordinate Measurement
The target coordinate could be measured after the setting of occupied point and backsight
azimuth.
The formular used to calculate:
N1＝N0＋S×sinZ×cosAz
E1＝E0＋S×sinZ×sinAz
Z1＝Z0＋S×cosZ＋IH－TH
Where：
N0-E0-Z0: occupied point coordinates
S：SD Z：Zenith angle Az：Azimuth angle
IH：Instrument height TH：Target height
SD
IH
Azimuth angle
N
E
Z
N
0-E0-Z0
HD
Zenith angle
Target (N-E-Z)
Target height
Set H angle/BS
Azimuth 45°00′00″
Tgt.H 1.000m
Pt#
HD 0.163m
dHD -0.163m
dVD 11.655
REC OK