Leica LS10 - Guidelines for Taking a Measurement

5.3 Guidelines for Taking a Measurement
1
B
H
0
H
Col
HH
H = 0.0000 m
007895_001
STN
D
F
D
INT
D
INT
2
F
Z
INT
dH
d
h
C
D
B
C
STN Station
1 Levelling staff 1 (backsight staff)
2 Levelling staff 2 (foresight staff)
C
1
/C
2
Levelling staff C
1
and C
2
for intermediate or set-out sight
B Staff height backsight. For double observations: B1, B2
F Staff height foresight. For double observations: F1, F2
INT Staff height intermediate sight or set-out sight
D
B
Backsight distance
D
F
Foresight distance
D
Int
Intermediate sight distance / Set-out distance
H
0
Height of starting point, for example, as height above sea level
H Height of foresight point / intermediate point
dH Height difference between backsight and foresight / intermediate
sight / set-out sight
d
h
Sequential height difference between two measurements taken in
sequence (foresight / intermediate sight / set-out sight)
H
Col
Instrument horizon (height of line of sight)
The bar code of the levelling staff is stored in the instrument as a reference
signal. When measuring, the line decoder captures the visible section of the
staff within the eld of view as a measuring signal. The instrument compares
the measuring signal to the reference signal and as a result displays the height
reading on the levelling staff and the horizontal distance.
The sensitivity of the sensor ranges from the highest frequencies of visible
light down to the frequency of infrared light.
Measurement values
Principle of digital
height readings
34 Measurement Guidelines