CST/BERGER LMH Serie Manuel D'instructions page 14

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Sweep or Scanning Mode (Model LMH600)
Instead of creating a room-wide reference line, the Sweep (Scanning) Mode creates a shorter,
brighter laser chalk line that can be used for leveling or plumbing doors, windows, fixtures, and
more. You may also use this feature to keep the instrument from interfering with other lasers and
detectors on site.
Pressing the (D) button, will lengthen or shorten the sweep of the laser beam. Preset angles of 10º,
45º, 90º,180º and spot can be set. Position the sweep area by using the (F) or (G) buttons.
Spot Mode (Model LMH600 only)
Spot Mode creates a motionless laser dot for reference, allowing the instrument to be used as a
straight-line laser.
Press the (E) button until the instrument is in Spot Mode. Press the (F) or (G) to rotate the laser
head clockwise or counter-clockwise. Pressing and holding the (G) or (F) button moves the rotating
beam more quickly.
Re-Leveling
If the instrument is bumped or moved, the instrument will automatically attempt to re-level itself.
On a job site, it may be necessary to prevent re-leveling in order to prevent inaccurate
measurements by the operator. The Anti-Drift System (ADS) is used for this purpose (see Anti-Drift
System - ADS). The instrument can also be placed in Manual Mode to allow the instrument to
continue operating when out of level.
Axis Drive Error
If the instrument is set up or tipped beyond its self-leveling range of ±5°, the laser head will initially
attempt to level; however, when the self-leveling limit is reached, an error will indicate an axis
error (Fig. 8).
Turn the instrument OFF, move the instrument to a more level position, then turn the instrument
on again.
Spindle Motor Error
If the laser spindle motor fails to rotate or rotates outside of the set speed, an error indicator will
indicate a spindle motor error (Fig. 8).
Anti-Drift System – ADS (LMH-CU and LMH600)
The Anti-Drift System, when ON, will signal to the operator that the instrument has been moved out
of level.The laser head will stop rotating, and the beam and ON LED will blink.
The default setting for ADS is user selectable. The default setting may be set to ADS ON or ADS
OFF. When the instrument is OFF, press and hold the (C) button for LMH-CU, or for LMH600 hold (F)
button, and then press the (A) button. Once the instrument is ON, turn the instrument off for 15 sec
and then back ON. If ADS was ON (OFF), it will now be OFF (ON).
14 • LMH-SERIES