CST/BERGER LMH Serie Manuel D'instructions page 17

CALIBRATION
Your LMH Series Self-Leveling Laser is a sealed instrument and is calibrated to precise accuracies
at the factory. However, a calibration check is recommended before the initial use of your laser,
and then periodically from that point forward. Be sure to allow time (up to 60 seconds) for the
instrument to completely self-level before each check.
Upright Position Peg Test – X axis (All models)
1. To test the X axis, mount the laser on a tripod or a level, sturdy surface and place
100 feet (30m) away from a wall. Face the "X+" side of the instrument to the wall (Fig. 16).
2. Press the (A) button and allow the instrument to self-level. Using the laser detector, locate
and mark the position of the laser line on the wall Position (A).
3. Loosen the instrument from the tripod and rotate the instrument 180°. Ensure that the height
of the tripod does not change, as this will affect your results. Secure and re-level
the instrument.
4. Again, using the laser detector, locate and mark the position of the laser on the
wall (Position (B)).
5. Mark the centerline between Position A and Position B (Position (C)). Calibration is
necessary if the vertical difference between Position A and Position C or Position B and
Position C is greater than the specified accuracy.
Repeat the above steps to ensure a correct reading. If the distance is greater than specified
accuracy, you will need to calibrate the X axis.
NOTE: For LMH600 Spot Mode can be used without detector if designed.
Upright Position Calibration– X axis
Model LMH-CU (Fig.16)
1. Power On the instrument with the (A) button while holding the
(B) button down, then release the (A) button. You will know
ifCalibration Mode is activated when the Manual Mode and
Anti-Drift LEDs flash alternately. Then, the Manual Mode LED
will remain lit; this indicates that the instrument is calibrating
within the X axis.(Fig. 17)
2. The (+)and (-) buttons change the axis increments. The (+)
button will produce a positive (+) increment, and the (-) button
will produce a negative(-) increment.
NOTE: For LMH-CU Pressing the (B) button will toggle between X
and Y axis for calibration. Manual LED on indicates X- axis is
selected.
3. You must raise or lower the beam to center between positions A and B (position C) on the
target. The instrument will react to "+" and "–" input within the X+ quadrant. The instrument
DOES NOT react to adjustments until the instrument is forced to re-level (i.e. rotate
and re-check point (A)).
If B is below A, increase the increment (+).
If B is above A, decrease the increment (-).
All manuals and user guides at all-guides.com
Location of Location of
Calibration Buttons Calibration Buttons
Fig. 17
LMH-SERIES • 17