Spectra Precision Focus 30 User Manual

Spectra Precision FOCUS 30 User Guide 83
6 Instrument Technology
StepDrive Motor System and Focus system
Spectra Precision FOCUS 30 Total Station is equipped with a StepDrive motor sys-
tem to position the instrument and the telescope and
a servo drive to focus the tele-
scope.
Due to the instrument accuracy it is important to use a high
quality tripod and tri-
brach. It is also important to set up the tripod in a position for best stability
, see
Figure 6-6. An unstable setup that could negati
vely influence the resulting measure-
ment precision.
Fig. 6-6 Tripod setup
Stable setup Unstable setup
StepDrive
The StepDrive motor system is a mechanical rough-fine drive system, which gives
high turning speeds and accuracy. The system provides endless horizontal and vertical
motion, including endless fine adjustment. The instrument uses a StepDrive motor
system when performing a number of different operations such as turning the hori-

Spectra Precision Focus 30 Specifications

General

Brand	Spectra Precision
Model	Focus 30
Category	Measuring Instruments
Language	English