Johnson Level & Tool Mfg. 40-6935 - Manual (Page 19)

©2011 Johnson Level & Tool 19
Sound Function
When the sound function is activated and the instrument is rotated,
the instrument will sound when the horizontal angle passes 0°, 90°,
180°, & 270°. Please refer to “initial setting” chapter to set horizontal
angle sound function.
Backlight LCD Telescope Reticle and Timing Power-Off
The display and telescope’s reticle on this theodolite are equipped
with a lighting device. Press the FUNC key twice to turn on the light.
Press the key twice again to turn it off. The instrument will
automatically turn off to save power if it has not received an
operation within 10 minutes, 20 minutes or 30 minutes. Please refer
to the “initial setting” section.
4430H-English_Manuals 2/22/11 11:08 AM Page 19