Leica AT500 User Manual page 39

2.8.1
Description
2.8.2
2.8.3
Description
Description of the System
Angle measurements
•
Distance measurements
•
Reflectors
•
Maximum Permissible Error (MPE)
Accuracy specifications in the technical data of this manual are stated with
the Maximum Permissible Error (MPE). The Maximum Permissible Error (MPE)
is defined by the ISO 10360-10:2021 as the extreme value of the measure-
ment error permitted by specification for the relevant test, i.e. length meas-
urement. An acceptance test is verified if all measurement errors according
to the relevant test item are smaller than the corresponding MPE specific-
ations. The ISO 10360-10:2021 defines criteria for the repetition of meas-
urements that exceed the MPE values. Typical measurement results of the
Absolute Tracker are half of the relevant MPE values.
Laser Tracker Subsystem Specifications
The following specifications represent the Laser Tracker subsystem specifica-
tion in accordance with ISO 10360-10:2021, Annex D.
Laser Tracker Subsystem
Absolute Distance Meter
(ADM)
R0 Parameter (R0)
Transverse
Measurement Uncertainty
The table below shows the Maximum Permissible Error (MPE) specifications
for the test items defined in ISO 10360-10:2021 using Leica 1.5'' Red Ring
Reflectors (RRR) and standard measurement mode unless otherwise noted.
Two-Face Meas-
urement
Absolute Angular
Performance e T 1)
1) Angular Performance Transverse e
this respects to a MPE for the Location Error (LDia.2×1:P&R:LT,MPE) in
accordance with chapter 6.3 of ISO 10360-10:2021 of 30 μm + 12 μm/m
Symbol Maximum Permissible Error
(MPE)
e ADM ±10 μm + 0.3 μm/m
e R0 ±5 μm
e T ±15 μm + 6 μm/m
Position Tolerance
(MPE)
Pos. 1 to 9 ±24 μm
(1.5 m dis-
tance)
Pos. 10 to ±51 μm
18
(6 m dis-
tance)
T according to ISO 10360-10:2021,
General Formula
±15 μm + 6 μm/m
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