PRO SHOT L1-AS Operation Manual page 15

13
Checking and Adjusting Calibration
4. Take the receiver to the target and find the height of the laser beam by moving
the receiver up or down until you get a display and/or tone. Now, find the center
of the display and mark the target, using the receiver's beam center notch as a
guide.
5. Return to the laser and rotate it 180 degrees. Allow the laser to re-level. The
opposite cross axis (X) direction is now aimed at the target. Find and mark the
laser beam height (see step 4).
6. The difference between the two marks (if any) is double the difference between
how the laser is calibrated and true level for the cross axis. Half way between
these two marks is true level. Make a long mark at true level. If the difference
between either outer mark and true level is within your working tolerance, go on
to step 10. If not, continue with the next step.
7. With the 1/4" wrench provided, turn the hex head calibration screw that is
under the main housing (near the serial number label) to adjust the cross axis
calibration. Turning the screw clockwise (looking down on the laser) will lower the
beam in the +x axis. A 1/8 turn of the screw will make approximately a 1-1/4"
(30mm) change at 100' (30M) turn the screw a small amount each time until the
beam matches the true level mark. Do not move the laser or platform during this
adjustment.
8. Check the cross axis adjustment by rotating the laser back to the first direction
and letting the laser re-level. Check that the reading is within the needed
tolerance of the true level mark.
9. Rotate the laser 90 degrees to aim the front of the slope axis at the target (+s
axis). Allow the laser to re-level and check the reading at the target. If the reading
is on, or within tolerance of the true level mark, calibration is complete. If not,
continue on.
10. Verify that the slope display counter is still exactly at 0.00. If not, zero the
slope display and re-check the reading. Carefully remove the battery cover and
locate the calibration adjustment potentiometer under the black rubber plug next
to the batteries on the lower left side of the housing. Turning the potentiometer
clockwise will lower the beam in the +s axis. Turning the potentiometer 1/4 turn
will make approximately a 5/16" (8mm) change at 100' (30M). Turn the screw a
small amount each time until the beam matches the true level mark.
Calibration is now complete.