Pentax ETH-305 Switch User Manual


 
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2.3.4 [0SET] key
Press the [0SET] key twice in succession to reset the displayed
horizontal angle 0°,00’,00”.(Press once,the key buzzer will sound,
then press again during the sound.)
Press the key once more to release.
To prevent operation error,the buzzer sounds for three seconds when
the [OSET] key is pressed.
[OSET] is not initiated unless the key is pressed during the buzzer
sound.
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