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8．POWER ON
（1） When the power is switched on, you will hear a buzzer. A self-check is run to
make sure the instrument is operating normally. The instrument number and
the software number will be displayed, and it will display “V angle set 0”.
（2） Rotate the telescope until you hear a buzzer, then the instrument will start
operation in the Meas mode.
Caution ：
z If “out of range” is displayed, the instrument tilt sensor is indicating
that the instrument is out of level. Level the instrument once again and
the horizontal and vertical angles will be displayed.
z When there is high wind or unstable set up positions, you should turn
off the tilt angle compensation before measurement.
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