User manual

178TPS1200
Technical Data
Accuracy • The accuracy with which the position of a prism can be determined with Auto-
matic Target Recognition (ATR) depends on several factors such as internal
ATR accuracy, instrument angle accuracy, prism type, selected EDM measuring
program and the external measuring conditions. The ATR has a basic standard
deviation level of ± 2 mm. Above a certain distance, the instrument angle accu-
racy predominates and takes over the standard deviation of the ATR.
• The following graph shows the ATR standard deviation based on two different
prism types, distances and instrument accuracies.
Leica 360° prism
Leica circular prism
mm ATR accuracy [mm]
m Distance measurement [m]
" Instrument angle accuracy ["]
20
mm
m
18
16
14
12
10
8
6
5”
3”
2”
1.5”
1”
4
2
0
0
100 200 300 400 500 600 700 800
TPS12_230