Sokkia CX Series Operator's Manual page 22

4. CX FUNCTIONS
CX-101/102 and Low Temperature Models only
7B
Sighting collimator
Use sighting collimator to aim the CX in the direction of the measurement
point. Turn the instrument until the triangle in the sighting collimator is
aligned with the target.
Instrument height mark
The height of the CX is as follows:
• 192.5mm (from tribrach mounting surface to this mark)
• 236mm (from tribrach dish (TR-102) to this mark)
"Instrument height" is input when setting instrument station data and is the
height from the measuring point (where CX is mounted) to this mark.
Trigger Key
Press the trigger key when the CX is in the OBS mode or when [MEAS]/
[STOP] is indicated on the display unit. You can start/stop measurement.
Laser-pointer Function
A target can be sighted with a red laser beam in dark locations without the
use of the telescope.
Independent Angle Calibration System (IACS) technology
(CX-101/102 only)
This revolutionary technology provides an even higher level of stability and
reliability for angle measurement. With IACS technology, the instrument
independently calibrates angle to a high degree of accuracy, and eliminates
the need for a reference standard instrument when performing calibration.
Independent angle calibration cannot be performed by the user.
Consult your local dealer.
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