©2005 Johnson Level & Tool
15
(b) General Detector Usage
Note:
Always keep the instrument stable
when detecting.
1) Press the power key to turn the unit on.
The LCD display will illuminate all the
indicator segments for 0.5 second (Fig.
1). When the indicator segments are no
longer illuminated, the detector is ready
for use. Note: The LCD display will still have the power, detection
and sound indicators illuminated (Fig. 2).
2) Detecting horizontal laser level signals
• Place the unit in a vertical position (verify by checking the horizontal
vial bubble).
• Make sure the receiving window (on front of detector) is facing the
laser level unit and is receiving the laser signal.
- If the LCD shows a “down” arrow and emits rapid short sounds, this
indicates that the laser level signal is located below the detector (Fig. 3).
- If the LCD shows an “up” arrow and emits slow short sounds, this
indicates that the laser level signal is located above the detector (Fig. 4).
- If the LCD shows the “center” mark and emits a continuous sound,
this indicates that the laser level signal is located in the center position
on the detector.
(Fig. 5-1) LCD indicat-
ing center position of
coarse detection
(Fig. 5-2) LCD indicat-
ing center position of
fine detection
Fig. 1 Fig. 2
Fig. 3 Fig. 4
Fig. 5-1 Fig. 5-2
40-6522 English 8/19/05 4:19 PM Page 15
