8.5
Automatic Prism Aiming AiM
Reflector
Range AiM mode
TRack mode
[m]
[ft]
[m]
[ft]
Standard prism (ZPR100)
1000
3300
800
2600
360° prism (ZPR1, GRZ122)
800
2600
600
2000
360° Mini prism (GRZ101)
350
1150
200
660
Mini prism (ZMP100)
500
1600
400
1300
Mini prism (ZMP101)
500
1600
400
1300
Reflector tape
60 mm x 60 mm (ZTM100)
45
150
not qualified
☞
The maximum range can be restricted by poorer conditions, for example rain.
Shortest measuring distance: 360° prism AiM:
1.5 m
Shortest measuring distance: 360° prism TRack:
5 m
AiM angle accuracy Hz, V (std. dev. ISO 17123-3):
1 " (0.3 mgon)
Base Positioning accuracy (std.dev.):
± 1 mm
Several factors can influence the system's accuracy for determining the location of a prism:
•
Internal AiM accuracy
•
Angular accuracy of the instrument
•
Type and centring accuracy of the prism
•
Selected EDM measuring program
•
External measuring conditions
Therefore, the overall pointing accuracy of the determined point location can be lower than the
given angular accuracy and the AiM accuracy.
The following paragraphs provide a short overview of these influencing factors and their possible
intensities.
Angular accuracy
The accuracy of angular measurements depends on the instrument type. The angular accuracy
for total stations is typically in the range from 0.5
²
to 5
²
. The resulting error depends on the
measurement distance.
Angular accuracy
Possible deviation* at 100 m distance
1
²
~
0.5 mm
3
²
~
1.5 mm
* Orthogonal to the line of sight.
☞
Refer to the data sheet of the respective instrument model for information about the
angular accuracy.
EDM accuracy
The distance measurement accuracy consists of two parts: a fixed value and a distance-depend-
ent value (ppm-value).
Example: "Single measurements: 1 mm + 1.5 ppm"
The EDM accuracies for prism and reflectorless measurements can differ. Additionally, the accu-
racies can differ depending on the used technologies.
☞
Refer to the appropriate data sheet for information about the EDM accuracy.
Range AiM/TRack
AiM accuracy with the
ZPR100 prism
System Accuracy
Technical Data
55