Leica AT500 User Manual page 54

5
Description
Measurement pre-
cision
54
Check & Adjust
Leica Geosystems products are manufactured, assembled and adjusted to
the best possible quality. Quick temperature changes, frequent movements
of the product, shock or stress can cause deviations and decrease the meas-
urement accuracy.
It is therefore recommended to check and adjust (compensate) the product
from time to time. This can be done onsite by running through specific
sensor check or compensation measurements. If the sensor checks do not
provide satisfying results repeatedly, a full compensation of the product is
recommended.
The following product parameters can be checked and adjusted electronically
to a product specific parameter file:
Axis offsets (O x , O y , e)
•
Vertical index, related to the standing axis (j)
•
Hz collimation correction (c)
•
Tilting axis correction (i)
•
Scan axis correction (c, j, O x , O y )
•
ADM Offset for reflector and for non-contact measurement (AC)
•
☞ Please refer to "Compensation" or "Sensor Check" in the Tracker
Pilot Reference Manual for details on the Sensor Check and
Compensation process.
To achieve precise measurement results in the daily work, it is important to
check and adjust (compensate) the product from time to time. During the
manufacturing process, the product parameters are carefully determined. As
previously mentioned, these values can change and it is highly recommended
to check or adjust the product in the following situations:
Before the first use of the product
•
Before taking high precision measurements
•
After long transportations
•
After long working periods
•
After long storage periods
•
After mechanical shock of the product, for example drop
•
In a high or low temperature environment
•
☞ Before starting to work the product has to become acclimat-
ised the ambient temperature, especially if the product has
been stored under different temperature conditions. Ensure suf-
ficient acclimatisation to the environment before taking preci-
sion measurements.
Check & Adjust