Johnson Level & Tool Mfg. 40-6510 - Manual (Page 17)

©2007 Johnson Level & Tool 17
2. Fine detection
1. power symbol
2. fine detection symbol
• Press coarse/fine detection button. The
detector is now in fine detection.
• Move the instrument up and down like the
coarse detection procedure.
(e) Horn
• Press the horn button. The sound symbol is displayed and the horn
is ready for the sound function. The detector then conducts
coarse/fine detection through sound (beep) signals.
• When the horn signal is a fast beep, move the detector up.
• When the detector makes short beep, move it down.
• When the detector makes a continuous sound, it is level with the
laser beam.
• If there is no beep heard, the instrument has not received the laser
beam signal.
(f) Turn-off timer
• The detector will automatically turn off if it has not received a laser
signal for 10 minutes
(g) Detector Maintenance
• When you are done using the detector, return it to its case.
• Keep the instrument, particularly the detecting window, clean. If
unit becomes dusty, use a clean cloth to gently wipe it clean.
Figure 6