Leica TPS700 Series User Manual

Automatic Target Recognition ATR
TCRApower and TCRAultra
instruments are motorized and
equipped with Automatic Target
Recognition (ATR) coaxially in the
telescope. The Electronic Guide
Light (EGL), mounted on the
telescope, is optional.
ATR mode
These instruments permit automatic
measurements to normal prisms and
reduce the tedious task of precise
visual sighting to prisms.
The prism is sighted with the optical
sight only. Initiating a distance
measurement will turn the instrument
with the help of the motors to sight
the prism-centre automatically.
The angles V and Hz are measured
to the centre of the prism after
completion of the distance
measurement.
As with all other instrument
errors, the collimation error
of the automatic target recognition
(ATR) must be redetermined
periodically (Refer to chapter
"Determing Instrument Errors" in the
Field Manual).
To speed up measuring
time, in ATR mode the
crosshairs are not positioned exactly
over the center of the prism. The
remaining distance between the
crosshairs and the center of the
prism is measured electronically and
the horizontal and vertical angles are
corrected accordingly. As a result, in
ATR mode the displayed angles are
of the usual precision and
correspond to the specifications of
your instrument.
Introduction
10
TPS700 User Manual 2.4.0en