Johnson Level & Tool Mfg. 40-6530 - Manual (Page 14)

14 ©2007 Johnson Level & Tool
2. Fine detection
1. power symbol
2. fine detection symbol
• Press the coarse/fine detection button.
The detector is ready for fine detection.
• Move the instrument up and down
like the coarse detection procedure.
• When the instrument displays as shown in
the figure, it is level with the laser beam.
• Tighten the clamp bolt and mark the
position of the object on the rabbet.
(e) Sound function
• Press the horn button. The horn symbol is displayed and it is ready
for the sound function. The detector will then conduct up/down
detection through horn signals.
• When the sound signal is a longer beep, move the instrument up.
• When the instrument makes short beep, move it down.
• When the instrument makes a continuous sound, it is level with
the laser beam.
• If there is no sound heard, the instrument has not received the
laser rotational signal.
(f) Turn-off timer
• The detector will automatically turn off if it has not received a laser
signal for 5 minutes
(g) Back light system
• There is a back light at the right side of the display window. Press
the back light button which will illuminate the display window.