Leica Rugby 260SG Manuel De L'utilisateur page 19

H.I. function
Rugby 260SG / 270SG / 280DG, Setup
The H.I. (Height of Instrument) function is used to alert for critical elevation changes
caused by movement of the tripod.
When the H.I. function is turned on, the letters "HI" will appear in the status line.
The H.I. function becomes active 30 seconds after the Rugby has completely leveled,
the head starts rotating and the self-leveling accuracy remains the same.
The Rugby will trigger an H.I. alert if it has to re-level beyond
the limit. The Rugby will stop rotating and the following
screen will appear on the display:

Stop the alert condition by pressing the STAR or
POWER button. In any case the Rugby relevels, sets
the grade and re-activates the H.I. function.
Carefully check the setup and elevation of the
Rugby to determine what has caused the alert
condition.
Adjust as required to the correct elevation.
17