Leica Geosystems TPS1100 Professional Series - System Field Manual - Manual (Page 53)

53
ATR Functions
Introduction
Automatic Target Recognition (ATR) is a feature of TCA and TCRA
instruments.
ATR allows automatic angle and distance measurements to prisms.
The prism is approximatively targeted with the optical sight on top
of the telescope. No focussing is needed. Initiating a distance
measurement with ALL or DIST will automatically position the
instrument to the prism centre.
The accuracy of ATR measurements depends on the EDM
measurement program set. Highest accuracy is achieved
with the EDM measurement program “Standard”. Refer to
the TPS1100 User Manual, chapter Technical Data for
more details concerning ATR accuracy.
As for all other instrument errors, the ATR collimation error
can be checked and determined using the calibration
function as described in the TPS1100 User Manual.